./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/email_spec7_product32.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 8393723b 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_6ce717ac-4101-4eb3-93a9-2285c6d9e98f/bin/utaipan-I9t0OCRTmS/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ce717ac-4101-4eb3-93a9-2285c6d9e98f/bin/utaipan-I9t0OCRTmS/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ce717ac-4101-4eb3-93a9-2285c6d9e98f/bin/utaipan-I9t0OCRTmS/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ce717ac-4101-4eb3-93a9-2285c6d9e98f/bin/utaipan-I9t0OCRTmS/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/email_spec7_product32.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ce717ac-4101-4eb3-93a9-2285c6d9e98f/bin/utaipan-I9t0OCRTmS/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ce717ac-4101-4eb3-93a9-2285c6d9e98f/bin/utaipan-I9t0OCRTmS --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash ee2b8c4c449b1e8aa7dd92109d118d4c0b36a93d6052f04f0a75223fa59783b7 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-8393723 [2022-11-19 08:25:34,660 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-19 08:25:34,664 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-19 08:25:34,709 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-19 08:25:34,710 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-19 08:25:34,714 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-19 08:25:34,718 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-19 08:25:34,722 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-19 08:25:34,726 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-19 08:25:34,736 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-19 08:25:34,737 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-19 08:25:34,742 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-19 08:25:34,744 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-19 08:25:34,746 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-19 08:25:34,748 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-19 08:25:34,750 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-19 08:25:34,752 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-19 08:25:34,753 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-19 08:25:34,755 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-19 08:25:34,765 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-19 08:25:34,767 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-19 08:25:34,769 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-19 08:25:34,770 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-19 08:25:34,771 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-19 08:25:34,781 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-19 08:25:34,781 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-19 08:25:34,782 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-19 08:25:34,784 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-19 08:25:34,785 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-19 08:25:34,786 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-19 08:25:34,786 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-19 08:25:34,788 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-19 08:25:34,790 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-19 08:25:34,791 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-19 08:25:34,793 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-19 08:25:34,794 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-19 08:25:34,795 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-19 08:25:34,795 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-19 08:25:34,795 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-19 08:25:34,796 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-19 08:25:34,797 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-19 08:25:34,798 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ce717ac-4101-4eb3-93a9-2285c6d9e98f/bin/utaipan-I9t0OCRTmS/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-11-19 08:25:34,845 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-19 08:25:34,846 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-19 08:25:34,846 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-19 08:25:34,847 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-19 08:25:34,848 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-19 08:25:34,848 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-19 08:25:34,848 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-19 08:25:34,849 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-19 08:25:34,849 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-19 08:25:34,849 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-19 08:25:34,850 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-19 08:25:34,851 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-19 08:25:34,851 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-19 08:25:34,851 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-19 08:25:34,852 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-19 08:25:34,852 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-19 08:25:34,852 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-19 08:25:34,853 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-19 08:25:34,854 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-19 08:25:34,854 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-19 08:25:34,854 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-19 08:25:34,855 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-19 08:25:34,855 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-19 08:25:34,855 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-19 08:25:34,855 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-19 08:25:34,856 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-19 08:25:34,856 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-19 08:25:34,856 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-19 08:25:34,857 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-19 08:25:34,857 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-19 08:25:34,857 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-19 08:25:34,858 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-19 08:25:34,858 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-19 08:25:34,858 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-19 08:25:34,859 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-19 08:25:34,859 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-19 08:25:34,859 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-19 08:25:34,859 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-19 08:25:34,860 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-19 08:25:34,860 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-19 08:25:34,860 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-19 08:25:34,861 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_6ce717ac-4101-4eb3-93a9-2285c6d9e98f/bin/utaipan-I9t0OCRTmS/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ce717ac-4101-4eb3-93a9-2285c6d9e98f/bin/utaipan-I9t0OCRTmS Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ee2b8c4c449b1e8aa7dd92109d118d4c0b36a93d6052f04f0a75223fa59783b7 [2022-11-19 08:25:35,273 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-19 08:25:35,312 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-19 08:25:35,316 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-19 08:25:35,318 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-19 08:25:35,319 INFO L275 PluginConnector]: CDTParser initialized [2022-11-19 08:25:35,320 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ce717ac-4101-4eb3-93a9-2285c6d9e98f/bin/utaipan-I9t0OCRTmS/../../sv-benchmarks/c/product-lines/email_spec7_product32.cil.c [2022-11-19 08:25:35,397 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ce717ac-4101-4eb3-93a9-2285c6d9e98f/bin/utaipan-I9t0OCRTmS/data/8e9f14190/8f9dfa3f6918492c9d69463877efefea/FLAG675845441 [2022-11-19 08:25:36,187 INFO L306 CDTParser]: Found 1 translation units. [2022-11-19 08:25:36,188 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ce717ac-4101-4eb3-93a9-2285c6d9e98f/sv-benchmarks/c/product-lines/email_spec7_product32.cil.c [2022-11-19 08:25:36,207 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ce717ac-4101-4eb3-93a9-2285c6d9e98f/bin/utaipan-I9t0OCRTmS/data/8e9f14190/8f9dfa3f6918492c9d69463877efefea/FLAG675845441 [2022-11-19 08:25:36,340 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ce717ac-4101-4eb3-93a9-2285c6d9e98f/bin/utaipan-I9t0OCRTmS/data/8e9f14190/8f9dfa3f6918492c9d69463877efefea [2022-11-19 08:25:36,344 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-19 08:25:36,347 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-19 08:25:36,351 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-19 08:25:36,352 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-19 08:25:36,356 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-19 08:25:36,357 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 08:25:36" (1/1) ... [2022-11-19 08:25:36,359 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1de2cf95 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:25:36, skipping insertion in model container [2022-11-19 08:25:36,359 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 08:25:36" (1/1) ... [2022-11-19 08:25:36,370 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-19 08:25:36,496 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-19 08:25:36,876 WARN L234 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ce717ac-4101-4eb3-93a9-2285c6d9e98f/sv-benchmarks/c/product-lines/email_spec7_product32.cil.c[6103,6116] [2022-11-19 08:25:37,280 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-19 08:25:37,304 INFO L203 MainTranslator]: Completed pre-run [2022-11-19 08:25:37,360 WARN L234 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ce717ac-4101-4eb3-93a9-2285c6d9e98f/sv-benchmarks/c/product-lines/email_spec7_product32.cil.c[6103,6116] [2022-11-19 08:25:37,521 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-19 08:25:37,557 INFO L208 MainTranslator]: Completed translation [2022-11-19 08:25:37,557 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:25:37 WrapperNode [2022-11-19 08:25:37,558 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-19 08:25:37,559 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-19 08:25:37,559 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-19 08:25:37,560 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-19 08:25:37,569 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:25:37" (1/1) ... [2022-11-19 08:25:37,598 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:25:37" (1/1) ... [2022-11-19 08:25:37,667 INFO L138 Inliner]: procedures = 134, calls = 234, calls flagged for inlining = 61, calls inlined = 53, statements flattened = 974 [2022-11-19 08:25:37,668 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-19 08:25:37,669 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-19 08:25:37,669 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-19 08:25:37,669 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-19 08:25:37,681 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:25:37" (1/1) ... [2022-11-19 08:25:37,681 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:25:37" (1/1) ... [2022-11-19 08:25:37,689 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:25:37" (1/1) ... [2022-11-19 08:25:37,689 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:25:37" (1/1) ... [2022-11-19 08:25:37,709 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:25:37" (1/1) ... [2022-11-19 08:25:37,721 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:25:37" (1/1) ... [2022-11-19 08:25:37,726 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:25:37" (1/1) ... [2022-11-19 08:25:37,731 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:25:37" (1/1) ... [2022-11-19 08:25:37,740 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-19 08:25:37,741 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-19 08:25:37,742 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-19 08:25:37,742 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-19 08:25:37,743 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:25:37" (1/1) ... [2022-11-19 08:25:37,751 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-19 08:25:37,766 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ce717ac-4101-4eb3-93a9-2285c6d9e98f/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 08:25:37,783 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ce717ac-4101-4eb3-93a9-2285c6d9e98f/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-19 08:25:37,871 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ce717ac-4101-4eb3-93a9-2285c6d9e98f/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-19 08:25:37,914 INFO L130 BoogieDeclarations]: Found specification of procedure getClientPrivateKey [2022-11-19 08:25:37,914 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientPrivateKey [2022-11-19 08:25:37,914 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookSize [2022-11-19 08:25:37,915 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookSize [2022-11-19 08:25:37,915 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailEncryptionKey [2022-11-19 08:25:37,915 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailEncryptionKey [2022-11-19 08:25:37,915 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookAddress [2022-11-19 08:25:37,916 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookAddress [2022-11-19 08:25:37,916 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailEncryptionKey [2022-11-19 08:25:37,916 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailEncryptionKey [2022-11-19 08:25:37,916 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2022-11-19 08:25:37,917 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2022-11-19 08:25:37,917 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing__wrappee__AutoResponder [2022-11-19 08:25:37,917 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing__wrappee__AutoResponder [2022-11-19 08:25:37,917 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2022-11-19 08:25:37,918 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2022-11-19 08:25:37,918 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable [2022-11-19 08:25:37,918 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable [2022-11-19 08:25:37,918 INFO L130 BoogieDeclarations]: Found specification of procedure createClientKeyringEntry [2022-11-19 08:25:37,919 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientKeyringEntry [2022-11-19 08:25:37,919 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsEncrypted [2022-11-19 08:25:37,919 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsEncrypted [2022-11-19 08:25:37,919 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSignKey [2022-11-19 08:25:37,920 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSignKey [2022-11-19 08:25:37,920 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAdd [2022-11-19 08:25:37,920 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAdd [2022-11-19 08:25:37,920 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2022-11-19 08:25:37,921 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailFrom [2022-11-19 08:25:37,921 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailFrom [2022-11-19 08:25:37,921 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2022-11-19 08:25:37,923 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2022-11-19 08:25:37,924 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-19 08:25:37,924 INFO L130 BoogieDeclarations]: Found specification of procedure isSigned [2022-11-19 08:25:37,924 INFO L138 BoogieDeclarations]: Found implementation of procedure isSigned [2022-11-19 08:25:37,925 INFO L130 BoogieDeclarations]: Found specification of procedure isKeyPairValid [2022-11-19 08:25:37,925 INFO L138 BoogieDeclarations]: Found implementation of procedure isKeyPairValid [2022-11-19 08:25:37,925 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookSize [2022-11-19 08:25:37,925 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookSize [2022-11-19 08:25:37,926 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringUser [2022-11-19 08:25:37,926 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringUser [2022-11-19 08:25:37,926 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringPublicKey [2022-11-19 08:25:37,926 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringPublicKey [2022-11-19 08:25:37,927 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2022-11-19 08:25:37,928 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2022-11-19 08:25:37,928 INFO L130 BoogieDeclarations]: Found specification of procedure findPublicKey [2022-11-19 08:25:37,929 INFO L138 BoogieDeclarations]: Found implementation of procedure findPublicKey [2022-11-19 08:25:37,930 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2022-11-19 08:25:37,931 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2022-11-19 08:25:37,932 INFO L130 BoogieDeclarations]: Found specification of procedure isEncrypted [2022-11-19 08:25:37,932 INFO L138 BoogieDeclarations]: Found implementation of procedure isEncrypted [2022-11-19 08:25:37,932 INFO L130 BoogieDeclarations]: Found specification of procedure setClientPrivateKey [2022-11-19 08:25:37,933 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientPrivateKey [2022-11-19 08:25:37,933 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailTo [2022-11-19 08:25:37,934 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailTo [2022-11-19 08:25:37,934 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-19 08:25:37,934 INFO L130 BoogieDeclarations]: Found specification of procedure generateKeyPair [2022-11-19 08:25:37,934 INFO L138 BoogieDeclarations]: Found implementation of procedure generateKeyPair [2022-11-19 08:25:37,935 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookAddress [2022-11-19 08:25:37,935 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookAddress [2022-11-19 08:25:37,935 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-19 08:25:37,936 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-19 08:25:38,281 INFO L235 CfgBuilder]: Building ICFG [2022-11-19 08:25:38,284 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-19 08:25:39,374 INFO L276 CfgBuilder]: Performing block encoding [2022-11-19 08:25:40,136 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-19 08:25:40,136 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-19 08:25:40,139 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 08:25:40 BoogieIcfgContainer [2022-11-19 08:25:40,139 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-19 08:25:40,142 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-19 08:25:40,142 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-19 08:25:40,146 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-19 08:25:40,147 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 08:25:36" (1/3) ... [2022-11-19 08:25:40,147 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4211e652 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 08:25:40, skipping insertion in model container [2022-11-19 08:25:40,148 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:25:37" (2/3) ... [2022-11-19 08:25:40,148 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4211e652 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 08:25:40, skipping insertion in model container [2022-11-19 08:25:40,148 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 08:25:40" (3/3) ... [2022-11-19 08:25:40,149 INFO L112 eAbstractionObserver]: Analyzing ICFG email_spec7_product32.cil.c [2022-11-19 08:25:40,171 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-19 08:25:40,171 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-19 08:25:40,257 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-19 08:25:40,269 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;@724ba642, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-19 08:25:40,270 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-19 08:25:40,277 INFO L276 IsEmpty]: Start isEmpty. Operand has 216 states, 122 states have (on average 1.3032786885245902) internal successors, (159), 127 states have internal predecessors, (159), 64 states have call successors, (64), 28 states have call predecessors, (64), 28 states have return successors, (64), 63 states have call predecessors, (64), 64 states have call successors, (64) [2022-11-19 08:25:40,302 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2022-11-19 08:25:40,303 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:25:40,304 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 08:25:40,306 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 08:25:40,313 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:25:40,314 INFO L85 PathProgramCache]: Analyzing trace with hash 831699076, now seen corresponding path program 1 times [2022-11-19 08:25:40,326 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 08:25:40,326 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [842554365] [2022-11-19 08:25:40,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:25:40,328 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 08:25:40,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:25:40,830 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-11-19 08:25:40,831 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 08:25:40,832 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [842554365] [2022-11-19 08:25:40,833 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [842554365] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 08:25:40,833 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 08:25:40,835 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-19 08:25:40,837 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [367600830] [2022-11-19 08:25:40,838 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 08:25:40,845 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-19 08:25:40,845 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 08:25:40,889 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-19 08:25:40,890 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-19 08:25:40,893 INFO L87 Difference]: Start difference. First operand has 216 states, 122 states have (on average 1.3032786885245902) internal successors, (159), 127 states have internal predecessors, (159), 64 states have call successors, (64), 28 states have call predecessors, (64), 28 states have return successors, (64), 63 states have call predecessors, (64), 64 states have call successors, (64) Second operand has 2 states, 2 states have (on average 21.5) internal successors, (43), 2 states have internal predecessors, (43), 2 states have call successors, (23), 2 states have call predecessors, (23), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2022-11-19 08:25:41,142 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 08:25:41,142 INFO L93 Difference]: Finished difference Result 340 states and 445 transitions. [2022-11-19 08:25:41,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-19 08:25:41,147 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 21.5) internal successors, (43), 2 states have internal predecessors, (43), 2 states have call successors, (23), 2 states have call predecessors, (23), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) Word has length 95 [2022-11-19 08:25:41,149 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 08:25:41,171 INFO L225 Difference]: With dead ends: 340 [2022-11-19 08:25:41,172 INFO L226 Difference]: Without dead ends: 213 [2022-11-19 08:25:41,179 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-19 08:25:41,183 INFO L413 NwaCegarLoop]: 243 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 243 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-19 08:25:41,184 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 243 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-19 08:25:41,201 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 213 states. [2022-11-19 08:25:41,239 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 213 to 213. [2022-11-19 08:25:41,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 213 states, 120 states have (on average 1.275) internal successors, (153), 124 states have internal predecessors, (153), 64 states have call successors, (64), 28 states have call predecessors, (64), 28 states have return successors, (63), 62 states have call predecessors, (63), 63 states have call successors, (63) [2022-11-19 08:25:41,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 213 states to 213 states and 280 transitions. [2022-11-19 08:25:41,246 INFO L78 Accepts]: Start accepts. Automaton has 213 states and 280 transitions. Word has length 95 [2022-11-19 08:25:41,247 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 08:25:41,248 INFO L495 AbstractCegarLoop]: Abstraction has 213 states and 280 transitions. [2022-11-19 08:25:41,248 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 21.5) internal successors, (43), 2 states have internal predecessors, (43), 2 states have call successors, (23), 2 states have call predecessors, (23), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2022-11-19 08:25:41,248 INFO L276 IsEmpty]: Start isEmpty. Operand 213 states and 280 transitions. [2022-11-19 08:25:41,252 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2022-11-19 08:25:41,252 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:25:41,252 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 08:25:41,253 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-19 08:25:41,253 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 08:25:41,253 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:25:41,254 INFO L85 PathProgramCache]: Analyzing trace with hash 2049203160, now seen corresponding path program 1 times [2022-11-19 08:25:41,254 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 08:25:41,254 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2129260149] [2022-11-19 08:25:41,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:25:41,255 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 08:25:41,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:25:41,603 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-19 08:25:41,603 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 08:25:41,604 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2129260149] [2022-11-19 08:25:41,604 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2129260149] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 08:25:41,604 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 08:25:41,605 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 08:25:41,605 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1564672599] [2022-11-19 08:25:41,606 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 08:25:41,610 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 08:25:41,611 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 08:25:41,611 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 08:25:41,612 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 08:25:41,612 INFO L87 Difference]: Start difference. First operand 213 states and 280 transitions. Second operand has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 2 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-11-19 08:25:41,897 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 08:25:41,898 INFO L93 Difference]: Finished difference Result 336 states and 430 transitions. [2022-11-19 08:25:41,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 08:25:41,898 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 2 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 85 [2022-11-19 08:25:41,899 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 08:25:41,902 INFO L225 Difference]: With dead ends: 336 [2022-11-19 08:25:41,902 INFO L226 Difference]: Without dead ends: 215 [2022-11-19 08:25:41,904 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 08:25:41,906 INFO L413 NwaCegarLoop]: 240 mSDtfsCounter, 0 mSDsluCounter, 239 mSDsCounter, 0 mSdLazyCounter, 80 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 479 SdHoareTripleChecker+Invalid, 80 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 80 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-19 08:25:41,906 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 479 Invalid, 80 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 80 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-19 08:25:41,908 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 215 states. [2022-11-19 08:25:41,944 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 215 to 215. [2022-11-19 08:25:41,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 215 states, 122 states have (on average 1.2704918032786885) internal successors, (155), 126 states have internal predecessors, (155), 64 states have call successors, (64), 28 states have call predecessors, (64), 28 states have return successors, (63), 62 states have call predecessors, (63), 63 states have call successors, (63) [2022-11-19 08:25:41,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 215 states to 215 states and 282 transitions. [2022-11-19 08:25:41,947 INFO L78 Accepts]: Start accepts. Automaton has 215 states and 282 transitions. Word has length 85 [2022-11-19 08:25:41,948 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 08:25:41,948 INFO L495 AbstractCegarLoop]: Abstraction has 215 states and 282 transitions. [2022-11-19 08:25:41,948 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 2 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-11-19 08:25:41,949 INFO L276 IsEmpty]: Start isEmpty. Operand 215 states and 282 transitions. [2022-11-19 08:25:41,963 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2022-11-19 08:25:41,964 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:25:41,964 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 08:25:41,964 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-19 08:25:41,965 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 08:25:41,972 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:25:41,972 INFO L85 PathProgramCache]: Analyzing trace with hash -730212502, now seen corresponding path program 1 times [2022-11-19 08:25:41,972 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 08:25:41,973 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [133384701] [2022-11-19 08:25:41,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:25:41,973 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 08:25:42,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:25:42,206 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-11-19 08:25:42,206 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 08:25:42,206 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [133384701] [2022-11-19 08:25:42,207 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [133384701] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 08:25:42,207 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 08:25:42,207 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 08:25:42,207 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [863790954] [2022-11-19 08:25:42,208 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 08:25:42,208 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 08:25:42,208 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 08:25:42,209 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 08:25:42,209 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 08:25:42,210 INFO L87 Difference]: Start difference. First operand 215 states and 282 transitions. Second operand has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 2 states have call successors, (23), 2 states have call predecessors, (23), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2022-11-19 08:25:42,367 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 08:25:42,367 INFO L93 Difference]: Finished difference Result 465 states and 631 transitions. [2022-11-19 08:25:42,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 08:25:42,368 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 2 states have call successors, (23), 2 states have call predecessors, (23), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) Word has length 101 [2022-11-19 08:25:42,369 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 08:25:42,371 INFO L225 Difference]: With dead ends: 465 [2022-11-19 08:25:42,372 INFO L226 Difference]: Without dead ends: 268 [2022-11-19 08:25:42,373 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 08:25:42,375 INFO L413 NwaCegarLoop]: 259 mSDtfsCounter, 59 mSDsluCounter, 234 mSDsCounter, 0 mSdLazyCounter, 81 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 77 SdHoareTripleChecker+Valid, 493 SdHoareTripleChecker+Invalid, 82 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 81 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-19 08:25:42,376 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [77 Valid, 493 Invalid, 82 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 81 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-19 08:25:42,377 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 268 states. [2022-11-19 08:25:42,397 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 268 to 263. [2022-11-19 08:25:42,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 263 states, 156 states have (on average 1.3461538461538463) internal successors, (210), 160 states have internal predecessors, (210), 78 states have call successors, (78), 28 states have call predecessors, (78), 28 states have return successors, (77), 76 states have call predecessors, (77), 77 states have call successors, (77) [2022-11-19 08:25:42,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 263 states to 263 states and 365 transitions. [2022-11-19 08:25:42,402 INFO L78 Accepts]: Start accepts. Automaton has 263 states and 365 transitions. Word has length 101 [2022-11-19 08:25:42,402 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 08:25:42,402 INFO L495 AbstractCegarLoop]: Abstraction has 263 states and 365 transitions. [2022-11-19 08:25:42,403 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 2 states have call successors, (23), 2 states have call predecessors, (23), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2022-11-19 08:25:42,403 INFO L276 IsEmpty]: Start isEmpty. Operand 263 states and 365 transitions. [2022-11-19 08:25:42,406 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2022-11-19 08:25:42,407 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:25:42,407 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 08:25:42,408 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-19 08:25:42,408 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 08:25:42,408 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:25:42,409 INFO L85 PathProgramCache]: Analyzing trace with hash -20894474, now seen corresponding path program 1 times [2022-11-19 08:25:42,409 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 08:25:42,409 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [250171543] [2022-11-19 08:25:42,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:25:42,410 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 08:25:42,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:25:42,743 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-19 08:25:42,744 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 08:25:42,744 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [250171543] [2022-11-19 08:25:42,745 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [250171543] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-19 08:25:42,745 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [46203267] [2022-11-19 08:25:42,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:25:42,746 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 08:25:42,746 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ce717ac-4101-4eb3-93a9-2285c6d9e98f/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 08:25:42,755 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ce717ac-4101-4eb3-93a9-2285c6d9e98f/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 08:25:42,762 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ce717ac-4101-4eb3-93a9-2285c6d9e98f/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-19 08:25:43,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:25:43,222 INFO L263 TraceCheckSpWp]: Trace formula consists of 1144 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-19 08:25:43,232 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 08:25:43,312 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-19 08:25:43,312 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 08:25:43,454 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-19 08:25:43,455 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [46203267] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 08:25:43,455 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [815460013] [2022-11-19 08:25:43,487 INFO L159 IcfgInterpreter]: Started Sifa with 76 locations of interest [2022-11-19 08:25:43,492 INFO L166 IcfgInterpreter]: Building call graph [2022-11-19 08:25:43,499 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-19 08:25:43,507 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-19 08:25:43,512 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-19 08:26:48,039 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 439 for LOIs [2022-11-19 08:26:48,407 INFO L197 IcfgInterpreter]: Interpreting procedure sendEmail with input of size 267 for LOIs [2022-11-19 08:26:50,872 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailTo with input of size 237 for LOIs [2022-11-19 08:26:50,961 INFO L197 IcfgInterpreter]: Interpreting procedure setClientPrivateKey with input of size 441 for LOIs [2022-11-19 08:26:51,340 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing with input of size 269 for LOIs [2022-11-19 08:26:55,192 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing__wrappee__AutoResponder with input of size 277 for LOIs [2022-11-19 08:27:07,104 INFO L197 IcfgInterpreter]: Interpreting procedure isReadable with input of size 251 for LOIs [2022-11-19 08:27:07,806 INFO L197 IcfgInterpreter]: Interpreting procedure isEncrypted with input of size 251 for LOIs [2022-11-19 08:27:07,848 INFO L197 IcfgInterpreter]: Interpreting procedure getClientPrivateKey with input of size 452 for LOIs [2022-11-19 08:27:08,431 INFO L197 IcfgInterpreter]: Interpreting procedure findPublicKey with input of size 249 for LOIs [2022-11-19 08:27:08,503 INFO L197 IcfgInterpreter]: Interpreting procedure getEmailTo with input of size 431 for LOIs [2022-11-19 08:27:09,157 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailFrom with input of size 473 for LOIs [2022-11-19 08:27:14,486 INFO L197 IcfgInterpreter]: Interpreting procedure getClientAddressBookSize with input of size 254 for LOIs [2022-11-19 08:27:14,536 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-19 08:28:02,261 WARN L233 SmtUtils]: Spent 5.87s on a formula simplification. DAG size of input: 498 DAG size of output: 330 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 08:28:08,618 WARN L233 SmtUtils]: Spent 5.02s on a formula simplification. DAG size of input: 508 DAG size of output: 286 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 08:28:24,403 WARN L233 SmtUtils]: Spent 7.54s on a formula simplification. DAG size of input: 560 DAG size of output: 384 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 08:28:32,308 WARN L233 SmtUtils]: Spent 7.58s on a formula simplification. DAG size of input: 566 DAG size of output: 390 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 08:28:41,918 WARN L233 SmtUtils]: Spent 5.89s on a formula simplification. DAG size of input: 473 DAG size of output: 279 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 08:28:48,501 WARN L233 SmtUtils]: Spent 6.09s on a formula simplification. DAG size of input: 495 DAG size of output: 285 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 08:29:09,045 WARN L233 SmtUtils]: Spent 5.53s on a formula simplification. DAG size of input: 452 DAG size of output: 269 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 08:29:15,409 WARN L233 SmtUtils]: Spent 5.79s on a formula simplification. DAG size of input: 478 DAG size of output: 285 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 08:29:35,594 WARN L233 SmtUtils]: Spent 6.23s on a formula simplification. DAG size of input: 431 DAG size of output: 255 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 08:29:42,522 WARN L233 SmtUtils]: Spent 6.18s on a formula simplification. DAG size of input: 450 DAG size of output: 263 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 08:29:59,231 WARN L233 SmtUtils]: Spent 5.55s on a formula simplification. DAG size of input: 473 DAG size of output: 340 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 08:30:05,393 WARN L233 SmtUtils]: Spent 5.47s on a formula simplification. DAG size of input: 475 DAG size of output: 342 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 08:30:13,248 WARN L233 SmtUtils]: Spent 6.42s on a formula simplification. DAG size of input: 517 DAG size of output: 365 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 08:30:25,967 WARN L233 SmtUtils]: Spent 7.97s on a formula simplification. DAG size of input: 527 DAG size of output: 421 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 08:31:08,785 WARN L233 SmtUtils]: Spent 14.22s on a formula simplification. DAG size of input: 598 DAG size of output: 394 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 08:31:20,345 WARN L233 SmtUtils]: Spent 10.46s on a formula simplification. DAG size of input: 595 DAG size of output: 475 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 08:31:20,351 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '3744#(and (= ~__ste_Client_Keyring1_User2~0 0) (= ~__GUIDSL_NON_TERMINAL_main~0 0) (<= |outgoing__wrappee__AutoResponder_getClientId_~retValue_acc~42#1| 2147483647) (<= |old(~__ste_email_isEncrypted1~0)| 0) (= ~__ste_email_subject0~0.offset 0) (<= 0 ~__ste_email_encryptionKey1~0) (<= 1 |outgoing__wrappee__AutoResponder_outgoing__wrappee__Keys_~client#1|) (= ~__SELECTED_FEATURE_Sign~0 0) (= 0 ~__ste_Client_AddressBook0_Address2~0) (= ~__ste_client_outbuffer3~0 0) (<= |outgoing__wrappee__AutoResponder_getClientId_~handle#1| 1) (= |outgoing__wrappee__AutoResponder_~pubkey~0#1| 0) (= ~__ste_Client_counter~0 0) (= ~__ste_Client_Keyring1_PublicKey2~0 0) (<= |outgoing__wrappee__AutoResponder_mail_~tmp~5#1| 2) (<= 0 (+ |outgoing__wrappee__AutoResponder_getClientId_~retValue_acc~42#1| 2147483648)) (<= |outgoing__wrappee__AutoResponder_outgoing__wrappee__Keys_#in~client#1| 1) (<= |old(~__ste_email_encryptionKey0~0)| 0) (<= 1 |outgoing__wrappee__AutoResponder_incoming_#in~msg#1|) (<= 1 |outgoing__wrappee__AutoResponder_#in~msg#1|) (<= ~__ste_email_encryptionKey1~0 0) (<= ~__ste_email_isSignatureVerified1~0 0) (<= |old(~__ste_email_to0~0)| 2) (= ~__ste_Client_AddressBook2_Alias0~0 0) (= 0 ~__ste_email_subject0~0.base) (<= |outgoing__wrappee__AutoResponder_~client#1| 1) (<= |outgoing__wrappee__AutoResponder_incoming_#in~msg#1| 1) (= ~__ste_Client_AddressBook2_Alias1~0 0) (= ~__ste_Client_Keyring2_PublicKey2~0 0) (= ~__ste_client_forwardReceiver3~0 0) (= ~__ste_client_name2~0.offset 0) (= ~__ste_client_name1~0.base 0) (<= 0 ~__ste_client_autoResponse1~0) (<= |old(~queued_client~0)| 0) (= ~__SELECTED_FEATURE_Verify~0 0) (= ~__ste_Client_Keyring1_User0~0 0) (<= 0 |old(~__ste_email_encryptionKey1~0)|) (<= 2 |old(~__ste_email_to0~0)|) (<= 0 |old(~queued_message~0)|) (= |outgoing__wrappee__AutoResponder_incoming_~privkey~0#1| |outgoing__wrappee__AutoResponder_incoming_~tmp~10#1|) (<= ~__ste_client_idCounter2~0 3) (<= ~queued_message~0 0) (<= |old(~__ste_email_from0~0)| 0) (<= |outgoing__wrappee__AutoResponder_outgoing__wrappee__Keys_~msg#1| 1) (<= ~__ste_email_isSignatureVerified0~0 0) (= ~__ste_email_body1~0.offset 0) (<= 0 |outgoing__wrappee__AutoResponder_~tmp___0~3#1|) (= ~__SELECTED_FEATURE_Encrypt~0 0) (= ~__ste_Client_AddressBook1_Address2~0 0) (<= ~__ste_email_from0~0 2147483647) (= ~__ste_ClientAddressBook_size1~0 0) (= ~__ste_Client_Keyring0_PublicKey0~0 0) (= ~__ste_Email_counter~0 0) (<= 1 |outgoing__wrappee__AutoResponder_outgoing__wrappee__Keys_#in~client#1|) (= ~__ste_ClientKeyring_size1~0 0) (= ~__ste_email_body0~0.offset 0) (<= 0 ~__ste_email_isSigned1~0) (<= 0 (+ ~__ste_email_from0~0 2147483648)) (= ~__ste_Client_Keyring0_User2~0 0) (= ~__ste_ClientAddressBook_size0~0 0) (<= |old(~__ste_email_isEncrypted0~0)| 0) (= ~__ste_Client_Keyring0_User1~0 0) (= ~__ste_Client_AddressBook1_Alias1~0 0) (= ~__ste_client_name1~0.offset 0) (<= |outgoing__wrappee__AutoResponder_~tmp___0~3#1| 0) (<= |outgoing__wrappee__AutoResponder_outgoing__wrappee__Keys_#in~msg#1| 1) (<= 1 |outgoing__wrappee__AutoResponder_outgoing__wrappee__Keys_~msg#1|) (<= 1 |outgoing__wrappee__AutoResponder_mail_~client#1|) (= ~head~0.offset 0) (= ~__ste_client_name0~0.offset 0) (<= ~__ste_client_autoResponse1~0 1) (= ~__ste_Client_Keyring0_PublicKey2~0 0) (<= |outgoing__wrappee__AutoResponder_getClientId_#res#1| 2147483647) (<= ~__ste_client_privateKey2~0 789) (= ~__ste_Client_Keyring1_PublicKey0~0 0) (<= 0 |old(~__ste_email_encryptionKey0~0)|) (<= |outgoing__wrappee__AutoResponder_incoming__wrappee__Verify_#in~client#1| 2) (= |outgoing__wrappee__AutoResponder_incoming__wrappee__Verify_#in~client#1| |outgoing__wrappee__AutoResponder_incoming_~client#1|) (<= |old(~queued_message~0)| 0) (<= 1 |old(~queue_empty~0)|) (<= ~queue_empty~0 1) (<= |outgoing__wrappee__AutoResponder_mail_#in~client#1| 1) (<= 2 |outgoing__wrappee__AutoResponder_~tmp~7#1|) (<= |outgoing__wrappee__AutoResponder___utac_acc__EncryptVerify_spec__1_~msg#1| 1) (= ~__SELECTED_FEATURE_Decrypt~0 0) (<= 1 |outgoing__wrappee__AutoResponder_~msg#1|) (<= 0 |old(~__ste_email_isEncrypted0~0)|) (<= 0 (+ ~__ste_email_signKey0~0 2147483648)) (<= |outgoing__wrappee__AutoResponder_outgoing__wrappee__Keys_~client#1| 1) (<= 0 ~__ste_email_isEncrypted1~0) (= ~__SELECTED_FEATURE_Keys~0 0) (<= ~__ste_email_signKey0~0 2147483647) (<= 0 |old(~__ste_email_from0~0)|) (<= 1 |outgoing__wrappee__AutoResponder___utac_acc__EncryptVerify_spec__1_~msg#1|) (= ~__SELECTED_FEATURE_AddressBook~0 0) (<= |outgoing__wrappee__AutoResponder_getClientId_#in~handle#1| 1) (= ~__ste_client_forwardReceiver2~0 0) (= ~__ste_Client_Keyring0_PublicKey1~0 0) (= |outgoing__wrappee__AutoResponder_verify_~client#1| |outgoing__wrappee__AutoResponder_verify_#in~client#1|) (= ~__SELECTED_FEATURE_Forward~0 0) (<= |outgoing__wrappee__AutoResponder_incoming_~msg#1| 1) (<= 0 ~__ste_email_isEncrypted0~0) (<= 1 |outgoing__wrappee__AutoResponder_getClientId_#in~handle#1|) (= ~__ste_Client_Keyring0_User0~0 0) (<= |outgoing__wrappee__AutoResponder_verify_#in~client#1| 2) (<= |outgoing__wrappee__AutoResponder_outgoing__wrappee__Keys_~tmp~6#1| 2147483647) (<= ~__ste_client_idCounter0~0 2147483647) (= ~__ste_Client_Keyring2_PublicKey1~0 0) (<= |outgoing__wrappee__AutoResponder_mail_~client#1| 1) (= ~__ste_email_body0~0.base 0) (<= ~__ste_email_isSigned0~0 1) (<= ~__ste_email_isEncrypted0~0 0) (= ~__ste_Client_AddressBook0_Alias0~0 0) (= |outgoing__wrappee__AutoResponder_incoming__wrappee__Verify_#in~msg#1| |outgoing__wrappee__AutoResponder_incoming_~msg#1|) (= ~__ste_email_id0~0 0) (<= ~__ste_client_autoResponse0~0 0) (<= 0 (+ 2147483648 |outgoing__wrappee__AutoResponder_outgoing__wrappee__Keys_~tmp~6#1|)) (= ~__ste_Client_Keyring2_User1~0 0) (<= |outgoing__wrappee__AutoResponder_~receiver~0#1| 2) (<= 2 |outgoing__wrappee__AutoResponder_verify_#in~client#1|) (<= 3 ~__ste_client_idCounter2~0) (<= |outgoing__wrappee__AutoResponder___utac_acc__EncryptVerify_spec__1_#in~msg#1| 1) (<= 1 |outgoing__wrappee__AutoResponder_mail_#in~client#1|) (<= 2 |outgoing__wrappee__AutoResponder_incoming_#in~client#1|) (= ~__ste_Client_AddressBook2_Address2~0 0) (= 3 ~chuck~0) (<= 0 |outgoing__wrappee__AutoResponder_incoming_~tmp~10#1|) (= ~__ste_Client_AddressBook2_Address1~0 0) (<= 0 ~__ste_email_signKey1~0) (<= 1 ~queue_empty~0) (<= ~__ste_email_signKey1~0 0) (<= ~__ste_email_isSigned1~0 0) (<= 1 |outgoing__wrappee__AutoResponder_mail_~msg#1|) (= ~bob~0 1) (= ~__ste_client_forwardReceiver1~0 0) (<= 0 ~__ste_client_autoResponse0~0) (<= 0 ~queued_message~0) (<= 0 |old(~__ste_email_isSignatureVerified0~0)|) (= ~__ste_Client_AddressBook1_Alias2~0 0) (<= 0 ~__ste_email_isSignatureVerified1~0) (= ~__ste_client_outbuffer0~0 0) (<= 789 ~__ste_client_privateKey2~0) (<= 2 |outgoing__wrappee__AutoResponder_~receiver~0#1|) (= |outgoing__wrappee__AutoResponder_verify_~msg#1| |outgoing__wrappee__AutoResponder_verify_~__utac__ad__arg1~0#1|) (<= 1 |outgoing__wrappee__AutoResponder_mail_#in~msg#1|) (<= 0 |old(~__ste_email_isEncrypted1~0)|) (= ~__SELECTED_FEATURE_Base~0 0) (= ~__ste_client_forwardReceiver0~0 0) (= ~__ste_Client_Keyring2_User0~0 0) (<= 0 (+ |outgoing__wrappee__AutoResponder_getClientId_#res#1| 2147483648)) (= ~rjh~0 2) (= 0 ~__ste_Client_AddressBook0_Address1~0) (= ~__ste_Client_AddressBook2_Address0~0 0) (<= |outgoing__wrappee__AutoResponder_#in~client#1| 1) (= ~__ste_Client_Keyring1_PublicKey1~0 0) (<= 0 ~queued_client~0) (= ~__ste_Client_Keyring2_PublicKey0~0 0) (<= 0 ~__ste_email_isSignatureVerified0~0) (= ~__ste_Client_AddressBook1_Address0~0 0) (= ~__ste_client_name2~0.base 0) (<= 0 |old(~queued_client~0)|) (<= ~__ste_email_encryptionKey0~0 0) (<= |old(~__ste_email_encryptionKey1~0)| 0) (= ~__ste_email_subject1~0.base 0) (<= |old(~queue_empty~0)| 1) (<= 2 |outgoing__wrappee__AutoResponder_incoming__wrappee__Verify_#in~client#1|) (<= |outgoing__wrappee__AutoResponder_#in~msg#1| 1) (<= |outgoing__wrappee__AutoResponder_mail_~msg#1| 1) (= ~__ste_Client_AddressBook1_Alias0~0 0) (<= 1 |outgoing__wrappee__AutoResponder___utac_acc__EncryptVerify_spec__1_#in~msg#1|) (= ~__ste_Client_Keyring2_User2~0 0) (= ~head~0.base 0) (= ~__ste_Client_Keyring1_User1~0 0) (<= |outgoing__wrappee__AutoResponder_mail_#in~msg#1| 1) (= |#NULL.offset| 0) (= ~__ste_Client_AddressBook2_Alias2~0 0) (= |outgoing__wrappee__AutoResponder_verify_#in~client#1| |outgoing__wrappee__AutoResponder_incoming__wrappee__Verify_~client#1|) (<= 0 ~__ste_email_isSigned0~0) (<= |outgoing__wrappee__AutoResponder_~msg#1| 1) (<= 0 ~__ste_client_autoResponse2~0) (= ~__ste_email_subject1~0.offset 0) (= ~__ste_Client_AddressBook0_Alias2~0 0) (= ~__ste_ClientKeyring_size0~0 0) (<= 1 |outgoing__wrappee__AutoResponder_#in~client#1|) (<= 1 |outgoing__wrappee__AutoResponder_verify_#in~msg#1|) (= ~__ste_Client_AddressBook1_Address1~0 0) (= 0 ~__ste_Client_AddressBook0_Address0~0) (= ~__ste_client_outbuffer1~0 0) (= ~__ste_Client_AddressBook0_Alias1~0 0) (<= ~__ste_email_isEncrypted1~0 0) (<= |old(~__ste_email_isSignatureVerified0~0)| 0) (= ~__GUIDSL_ROOT_PRODUCTION~0 0) (<= |old(~__ste_email_isSignatureVerified1~0)| 0) (<= 1 |outgoing__wrappee__AutoResponder_outgoing__wrappee__Keys_#in~msg#1|) (<= |outgoing__wrappee__AutoResponder_verify_#in~msg#1| 1) (<= |outgoing__wrappee__AutoResponder_incoming_#in~client#1| 2) (<= 1 |outgoing__wrappee__AutoResponder_getClientId_~handle#1|) (= ~__ste_client_name0~0.base 0) (= ~__ste_email_id1~0 0) (<= 1 |outgoing__wrappee__AutoResponder_incoming__wrappee__Verify_~msg#1|) (<= 0 |old(~__ste_email_isSignatureVerified1~0)|) (= ~__ste_client_outbuffer2~0 0) (= |outgoing__wrappee__AutoResponder_incoming__wrappee__Verify_#in~msg#1| |outgoing__wrappee__AutoResponder_incoming__wrappee__Verify_~msg#1|) (<= 0 (+ ~__ste_client_idCounter0~0 2147483648)) (= |outgoing__wrappee__AutoResponder___utac_acc__EncryptVerify_spec__1_~tmp~16#1| 0) (<= 2 ~__ste_email_to0~0) (<= 0 |#StackHeapBarrier|) (<= ~__ste_email_to0~0 2) (<= 1 |outgoing__wrappee__AutoResponder_~client#1|) (= ~__ste_ClientAddressBook_size2~0 0) (<= |outgoing__wrappee__AutoResponder_incoming_~tmp~10#1| 0) (= ~__SELECTED_FEATURE_AutoResponder~0 0) (<= ~__ste_client_autoResponse2~0 0) (= ~__ste_email_body1~0.base 0) (= ~__ste_ClientKeyring_size2~0 0) (= |outgoing__wrappee__AutoResponder_verify_~msg#1| |outgoing__wrappee__AutoResponder_verify_#in~msg#1|) (<= 0 ~__ste_email_encryptionKey0~0) (= |#NULL.base| 0) (<= |outgoing__wrappee__AutoResponder_~tmp~7#1| 2) (<= 2 |outgoing__wrappee__AutoResponder_mail_~tmp~5#1|) (<= ~queued_client~0 0))' at error location [2022-11-19 08:31:20,352 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-19 08:31:20,352 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-19 08:31:20,352 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2022-11-19 08:31:20,353 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1293430110] [2022-11-19 08:31:20,353 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-19 08:31:20,354 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-19 08:31:20,354 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 08:31:20,354 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-19 08:31:20,363 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=217, Invalid=5039, Unknown=0, NotChecked=0, Total=5256 [2022-11-19 08:31:20,363 INFO L87 Difference]: Start difference. First operand 263 states and 365 transitions. Second operand has 7 states, 7 states have (on average 9.714285714285714) internal successors, (68), 7 states have internal predecessors, (68), 2 states have call successors, (31), 2 states have call predecessors, (31), 2 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) [2022-11-19 08:31:20,771 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 08:31:20,771 INFO L93 Difference]: Finished difference Result 659 states and 980 transitions. [2022-11-19 08:31:20,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-19 08:31:20,772 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.714285714285714) internal successors, (68), 7 states have internal predecessors, (68), 2 states have call successors, (31), 2 states have call predecessors, (31), 2 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) Word has length 91 [2022-11-19 08:31:20,774 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 08:31:20,779 INFO L225 Difference]: With dead ends: 659 [2022-11-19 08:31:20,779 INFO L226 Difference]: Without dead ends: 538 [2022-11-19 08:31:20,783 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 275 GetRequests, 201 SyntacticMatches, 3 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1223 ImplicationChecksByTransitivity, 245.7s TimeCoverageRelationStatistics Valid=217, Invalid=5039, Unknown=0, NotChecked=0, Total=5256 [2022-11-19 08:31:20,784 INFO L413 NwaCegarLoop]: 310 mSDtfsCounter, 225 mSDsluCounter, 860 mSDsCounter, 0 mSdLazyCounter, 301 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 279 SdHoareTripleChecker+Valid, 1170 SdHoareTripleChecker+Invalid, 322 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 301 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-19 08:31:20,784 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [279 Valid, 1170 Invalid, 322 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 301 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-19 08:31:20,786 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 538 states. [2022-11-19 08:31:20,824 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 538 to 523. [2022-11-19 08:31:20,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 523 states, 337 states have (on average 1.4718100890207715) internal successors, (496), 341 states have internal predecessors, (496), 157 states have call successors, (157), 28 states have call predecessors, (157), 28 states have return successors, (156), 155 states have call predecessors, (156), 156 states have call successors, (156) [2022-11-19 08:31:20,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 523 states to 523 states and 809 transitions. [2022-11-19 08:31:20,832 INFO L78 Accepts]: Start accepts. Automaton has 523 states and 809 transitions. Word has length 91 [2022-11-19 08:31:20,833 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 08:31:20,833 INFO L495 AbstractCegarLoop]: Abstraction has 523 states and 809 transitions. [2022-11-19 08:31:20,833 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.714285714285714) internal successors, (68), 7 states have internal predecessors, (68), 2 states have call successors, (31), 2 states have call predecessors, (31), 2 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) [2022-11-19 08:31:20,833 INFO L276 IsEmpty]: Start isEmpty. Operand 523 states and 809 transitions. [2022-11-19 08:31:20,838 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2022-11-19 08:31:20,838 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:31:20,838 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 08:31:20,855 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ce717ac-4101-4eb3-93a9-2285c6d9e98f/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-19 08:31:21,049 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ce717ac-4101-4eb3-93a9-2285c6d9e98f/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 08:31:21,050 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 08:31:21,050 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:31:21,051 INFO L85 PathProgramCache]: Analyzing trace with hash -2091802851, now seen corresponding path program 1 times [2022-11-19 08:31:21,051 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 08:31:21,051 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [198138675] [2022-11-19 08:31:21,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:31:21,051 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 08:31:21,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:31:21,153 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-19 08:31:21,154 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 08:31:21,154 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [198138675] [2022-11-19 08:31:21,154 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [198138675] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 08:31:21,154 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 08:31:21,155 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 08:31:21,155 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [628500196] [2022-11-19 08:31:21,155 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 08:31:21,156 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 08:31:21,156 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 08:31:21,157 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 08:31:21,157 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 08:31:21,157 INFO L87 Difference]: Start difference. First operand 523 states and 809 transitions. Second operand has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 2 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-11-19 08:31:21,326 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 08:31:21,326 INFO L93 Difference]: Finished difference Result 1276 states and 2016 transitions. [2022-11-19 08:31:21,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 08:31:21,327 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 2 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 97 [2022-11-19 08:31:21,327 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 08:31:21,333 INFO L225 Difference]: With dead ends: 1276 [2022-11-19 08:31:21,333 INFO L226 Difference]: Without dead ends: 785 [2022-11-19 08:31:21,336 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 08:31:21,337 INFO L413 NwaCegarLoop]: 265 mSDtfsCounter, 57 mSDsluCounter, 240 mSDsCounter, 0 mSdLazyCounter, 83 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 75 SdHoareTripleChecker+Valid, 505 SdHoareTripleChecker+Invalid, 84 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 83 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-19 08:31:21,337 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [75 Valid, 505 Invalid, 84 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 83 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-19 08:31:21,339 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 785 states. [2022-11-19 08:31:21,387 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 785 to 780. [2022-11-19 08:31:21,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 780 states, 515 states have (on average 1.4932038834951455) internal successors, (769), 519 states have internal predecessors, (769), 236 states have call successors, (236), 28 states have call predecessors, (236), 28 states have return successors, (235), 234 states have call predecessors, (235), 235 states have call successors, (235) [2022-11-19 08:31:21,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 780 states to 780 states and 1240 transitions. [2022-11-19 08:31:21,395 INFO L78 Accepts]: Start accepts. Automaton has 780 states and 1240 transitions. Word has length 97 [2022-11-19 08:31:21,396 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 08:31:21,396 INFO L495 AbstractCegarLoop]: Abstraction has 780 states and 1240 transitions. [2022-11-19 08:31:21,396 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 2 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-11-19 08:31:21,396 INFO L276 IsEmpty]: Start isEmpty. Operand 780 states and 1240 transitions. [2022-11-19 08:31:21,402 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2022-11-19 08:31:21,402 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:31:21,402 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 08:31:21,402 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-19 08:31:21,403 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 08:31:21,403 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:31:21,403 INFO L85 PathProgramCache]: Analyzing trace with hash 428308576, now seen corresponding path program 1 times [2022-11-19 08:31:21,403 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 08:31:21,404 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1700700755] [2022-11-19 08:31:21,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:31:21,404 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 08:31:21,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:31:21,513 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-19 08:31:21,514 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 08:31:21,514 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1700700755] [2022-11-19 08:31:21,514 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1700700755] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 08:31:21,514 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 08:31:21,515 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 08:31:21,515 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1636202474] [2022-11-19 08:31:21,515 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 08:31:21,515 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 08:31:21,515 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 08:31:21,516 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 08:31:21,516 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 08:31:21,516 INFO L87 Difference]: Start difference. First operand 780 states and 1240 transitions. Second operand has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 2 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-11-19 08:31:21,661 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 08:31:21,662 INFO L93 Difference]: Finished difference Result 1898 states and 3063 transitions. [2022-11-19 08:31:21,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 08:31:21,662 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 2 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 98 [2022-11-19 08:31:21,663 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 08:31:21,668 INFO L225 Difference]: With dead ends: 1898 [2022-11-19 08:31:21,669 INFO L226 Difference]: Without dead ends: 1180 [2022-11-19 08:31:21,671 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 08:31:21,672 INFO L413 NwaCegarLoop]: 259 mSDtfsCounter, 55 mSDsluCounter, 235 mSDsCounter, 0 mSdLazyCounter, 84 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 73 SdHoareTripleChecker+Valid, 494 SdHoareTripleChecker+Invalid, 85 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 84 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-19 08:31:21,673 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [73 Valid, 494 Invalid, 85 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 84 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-19 08:31:21,674 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1180 states. [2022-11-19 08:31:21,763 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1180 to 1175. [2022-11-19 08:31:21,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1175 states, 791 states have (on average 1.5031605562579013) internal successors, (1189), 795 states have internal predecessors, (1189), 355 states have call successors, (355), 28 states have call predecessors, (355), 28 states have return successors, (354), 353 states have call predecessors, (354), 354 states have call successors, (354) [2022-11-19 08:31:21,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1175 states to 1175 states and 1898 transitions. [2022-11-19 08:31:21,771 INFO L78 Accepts]: Start accepts. Automaton has 1175 states and 1898 transitions. Word has length 98 [2022-11-19 08:31:21,772 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 08:31:21,772 INFO L495 AbstractCegarLoop]: Abstraction has 1175 states and 1898 transitions. [2022-11-19 08:31:21,772 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 2 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-11-19 08:31:21,772 INFO L276 IsEmpty]: Start isEmpty. Operand 1175 states and 1898 transitions. [2022-11-19 08:31:21,778 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-11-19 08:31:21,778 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:31:21,778 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 08:31:21,779 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-19 08:31:21,779 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 08:31:21,779 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:31:21,779 INFO L85 PathProgramCache]: Analyzing trace with hash 701508555, now seen corresponding path program 1 times [2022-11-19 08:31:21,779 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 08:31:21,780 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1921618788] [2022-11-19 08:31:21,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:31:21,780 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 08:31:21,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:31:21,859 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-19 08:31:21,859 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 08:31:21,859 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1921618788] [2022-11-19 08:31:21,859 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1921618788] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 08:31:21,860 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 08:31:21,860 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 08:31:21,860 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [202451804] [2022-11-19 08:31:21,860 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 08:31:21,861 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 08:31:21,861 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 08:31:21,861 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 08:31:21,861 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 08:31:21,862 INFO L87 Difference]: Start difference. First operand 1175 states and 1898 transitions. Second operand has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 2 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-11-19 08:31:22,038 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 08:31:22,038 INFO L93 Difference]: Finished difference Result 2801 states and 4575 transitions. [2022-11-19 08:31:22,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 08:31:22,039 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 2 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 99 [2022-11-19 08:31:22,039 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 08:31:22,049 INFO L225 Difference]: With dead ends: 2801 [2022-11-19 08:31:22,049 INFO L226 Difference]: Without dead ends: 1768 [2022-11-19 08:31:22,053 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 08:31:22,054 INFO L413 NwaCegarLoop]: 255 mSDtfsCounter, 53 mSDsluCounter, 232 mSDsCounter, 0 mSdLazyCounter, 84 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 71 SdHoareTripleChecker+Valid, 487 SdHoareTripleChecker+Invalid, 85 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 84 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-19 08:31:22,054 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [71 Valid, 487 Invalid, 85 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 84 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-19 08:31:22,056 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1768 states. [2022-11-19 08:31:22,158 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1768 to 1763. [2022-11-19 08:31:22,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1763 states, 1217 states have (on average 1.5094494658997535) internal successors, (1837), 1221 states have internal predecessors, (1837), 517 states have call successors, (517), 28 states have call predecessors, (517), 28 states have return successors, (516), 515 states have call predecessors, (516), 516 states have call successors, (516) [2022-11-19 08:31:22,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1763 states to 1763 states and 2870 transitions. [2022-11-19 08:31:22,173 INFO L78 Accepts]: Start accepts. Automaton has 1763 states and 2870 transitions. Word has length 99 [2022-11-19 08:31:22,173 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 08:31:22,173 INFO L495 AbstractCegarLoop]: Abstraction has 1763 states and 2870 transitions. [2022-11-19 08:31:22,174 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 2 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-11-19 08:31:22,174 INFO L276 IsEmpty]: Start isEmpty. Operand 1763 states and 2870 transitions. [2022-11-19 08:31:22,183 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2022-11-19 08:31:22,184 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:31:22,184 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 08:31:22,184 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-19 08:31:22,184 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 08:31:22,185 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:31:22,185 INFO L85 PathProgramCache]: Analyzing trace with hash -1845721119, now seen corresponding path program 1 times [2022-11-19 08:31:22,185 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 08:31:22,185 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [214045023] [2022-11-19 08:31:22,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:31:22,186 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 08:31:22,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:31:22,278 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-19 08:31:22,278 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 08:31:22,278 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [214045023] [2022-11-19 08:31:22,278 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [214045023] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 08:31:22,279 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 08:31:22,279 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 08:31:22,279 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [630129233] [2022-11-19 08:31:22,279 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 08:31:22,280 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 08:31:22,280 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 08:31:22,280 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 08:31:22,281 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 08:31:22,281 INFO L87 Difference]: Start difference. First operand 1763 states and 2870 transitions. Second operand has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 2 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-11-19 08:31:22,570 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 08:31:22,570 INFO L93 Difference]: Finished difference Result 4186 states and 6883 transitions. [2022-11-19 08:31:22,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 08:31:22,571 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 2 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 100 [2022-11-19 08:31:22,571 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 08:31:22,588 INFO L225 Difference]: With dead ends: 4186 [2022-11-19 08:31:22,588 INFO L226 Difference]: Without dead ends: 2702 [2022-11-19 08:31:22,594 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 08:31:22,595 INFO L413 NwaCegarLoop]: 254 mSDtfsCounter, 51 mSDsluCounter, 231 mSDsCounter, 0 mSdLazyCounter, 82 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 69 SdHoareTripleChecker+Valid, 485 SdHoareTripleChecker+Invalid, 83 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 82 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-19 08:31:22,596 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [69 Valid, 485 Invalid, 83 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 82 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-19 08:31:22,600 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2702 states. [2022-11-19 08:31:22,837 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2702 to 2697. [2022-11-19 08:31:22,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2697 states, 1906 states have (on average 1.512591815320042) internal successors, (2883), 1910 states have internal predecessors, (2883), 762 states have call successors, (762), 28 states have call predecessors, (762), 28 states have return successors, (761), 760 states have call predecessors, (761), 761 states have call successors, (761) [2022-11-19 08:31:22,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2697 states to 2697 states and 4406 transitions. [2022-11-19 08:31:22,867 INFO L78 Accepts]: Start accepts. Automaton has 2697 states and 4406 transitions. Word has length 100 [2022-11-19 08:31:22,867 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 08:31:22,868 INFO L495 AbstractCegarLoop]: Abstraction has 2697 states and 4406 transitions. [2022-11-19 08:31:22,868 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 2 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-11-19 08:31:22,868 INFO L276 IsEmpty]: Start isEmpty. Operand 2697 states and 4406 transitions. [2022-11-19 08:31:22,882 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2022-11-19 08:31:22,882 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:31:22,883 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 08:31:22,883 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-19 08:31:22,883 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 08:31:22,884 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:31:22,884 INFO L85 PathProgramCache]: Analyzing trace with hash -1559339865, now seen corresponding path program 1 times [2022-11-19 08:31:22,884 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 08:31:22,884 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [54330084] [2022-11-19 08:31:22,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:31:22,885 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 08:31:22,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:31:22,982 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-19 08:31:22,983 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 08:31:22,983 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [54330084] [2022-11-19 08:31:22,983 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [54330084] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 08:31:22,983 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 08:31:22,983 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 08:31:22,984 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1321645747] [2022-11-19 08:31:22,984 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 08:31:22,984 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 08:31:22,985 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 08:31:22,985 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 08:31:22,985 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 08:31:22,986 INFO L87 Difference]: Start difference. First operand 2697 states and 4406 transitions. Second operand has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 2 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-11-19 08:31:23,357 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 08:31:23,357 INFO L93 Difference]: Finished difference Result 6702 states and 11043 transitions. [2022-11-19 08:31:23,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 08:31:23,358 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 2 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 101 [2022-11-19 08:31:23,359 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 08:31:23,387 INFO L225 Difference]: With dead ends: 6702 [2022-11-19 08:31:23,387 INFO L226 Difference]: Without dead ends: 4427 [2022-11-19 08:31:23,396 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 08:31:23,397 INFO L413 NwaCegarLoop]: 262 mSDtfsCounter, 49 mSDsluCounter, 237 mSDsCounter, 0 mSdLazyCounter, 82 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 67 SdHoareTripleChecker+Valid, 499 SdHoareTripleChecker+Invalid, 83 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 82 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-19 08:31:23,397 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [67 Valid, 499 Invalid, 83 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 82 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-19 08:31:23,403 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4427 states. [2022-11-19 08:31:23,791 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4427 to 4422. [2022-11-19 08:31:23,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4422 states, 3138 states have (on average 1.502868068833652) internal successors, (4716), 3142 states have internal predecessors, (4716), 1255 states have call successors, (1255), 28 states have call predecessors, (1255), 28 states have return successors, (1254), 1253 states have call predecessors, (1254), 1254 states have call successors, (1254) [2022-11-19 08:31:23,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4422 states to 4422 states and 7225 transitions. [2022-11-19 08:31:23,820 INFO L78 Accepts]: Start accepts. Automaton has 4422 states and 7225 transitions. Word has length 101 [2022-11-19 08:31:23,820 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 08:31:23,820 INFO L495 AbstractCegarLoop]: Abstraction has 4422 states and 7225 transitions. [2022-11-19 08:31:23,820 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 2 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-11-19 08:31:23,821 INFO L276 IsEmpty]: Start isEmpty. Operand 4422 states and 7225 transitions. [2022-11-19 08:31:23,840 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2022-11-19 08:31:23,840 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:31:23,840 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 08:31:23,841 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-19 08:31:23,841 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 08:31:23,841 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:31:23,841 INFO L85 PathProgramCache]: Analyzing trace with hash -1901576443, now seen corresponding path program 1 times [2022-11-19 08:31:23,842 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 08:31:23,842 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1634144648] [2022-11-19 08:31:23,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:31:23,842 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 08:31:23,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:31:23,924 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-19 08:31:23,925 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 08:31:23,925 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1634144648] [2022-11-19 08:31:23,925 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1634144648] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 08:31:23,925 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 08:31:23,926 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 08:31:23,926 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2124190735] [2022-11-19 08:31:23,926 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 08:31:23,926 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 08:31:23,927 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 08:31:23,927 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 08:31:23,927 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 08:31:23,927 INFO L87 Difference]: Start difference. First operand 4422 states and 7225 transitions. Second operand has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 2 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-11-19 08:31:24,452 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 08:31:24,452 INFO L93 Difference]: Finished difference Result 11118 states and 18328 transitions. [2022-11-19 08:31:24,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 08:31:24,453 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 2 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 102 [2022-11-19 08:31:24,453 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 08:31:24,498 INFO L225 Difference]: With dead ends: 11118 [2022-11-19 08:31:24,498 INFO L226 Difference]: Without dead ends: 7384 [2022-11-19 08:31:24,511 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 [2022-11-19 08:31:24,512 INFO L413 NwaCegarLoop]: 257 mSDtfsCounter, 47 mSDsluCounter, 235 mSDsCounter, 0 mSdLazyCounter, 84 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 65 SdHoareTripleChecker+Valid, 492 SdHoareTripleChecker+Invalid, 85 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 84 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-19 08:31:24,513 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [65 Valid, 492 Invalid, 85 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 84 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-19 08:31:24,521 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7384 states. [2022-11-19 08:31:25,146 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7384 to 7379. [2022-11-19 08:31:25,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7379 states, 5273 states have (on average 1.4983880144130477) internal successors, (7901), 5277 states have internal predecessors, (7901), 2077 states have call successors, (2077), 28 states have call predecessors, (2077), 28 states have return successors, (2076), 2075 states have call predecessors, (2076), 2076 states have call successors, (2076) [2022-11-19 08:31:25,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7379 states to 7379 states and 12054 transitions. [2022-11-19 08:31:25,206 INFO L78 Accepts]: Start accepts. Automaton has 7379 states and 12054 transitions. Word has length 102 [2022-11-19 08:31:25,207 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 08:31:25,207 INFO L495 AbstractCegarLoop]: Abstraction has 7379 states and 12054 transitions. [2022-11-19 08:31:25,208 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 2 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-11-19 08:31:25,208 INFO L276 IsEmpty]: Start isEmpty. Operand 7379 states and 12054 transitions. [2022-11-19 08:31:25,235 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2022-11-19 08:31:25,236 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:31:25,236 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 08:31:25,236 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-19 08:31:25,236 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 08:31:25,237 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:31:25,237 INFO L85 PathProgramCache]: Analyzing trace with hash -175892919, now seen corresponding path program 1 times [2022-11-19 08:31:25,237 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 08:31:25,238 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1586713830] [2022-11-19 08:31:25,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:31:25,238 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 08:31:25,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:31:25,359 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-19 08:31:25,359 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 08:31:25,359 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1586713830] [2022-11-19 08:31:25,359 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1586713830] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 08:31:25,360 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 08:31:25,360 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 08:31:25,360 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1605562681] [2022-11-19 08:31:25,360 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 08:31:25,361 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 08:31:25,361 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 08:31:25,362 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 08:31:25,362 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 08:31:25,363 INFO L87 Difference]: Start difference. First operand 7379 states and 12054 transitions. Second operand has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 2 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-11-19 08:31:26,339 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 08:31:26,341 INFO L93 Difference]: Finished difference Result 18585 states and 30590 transitions. [2022-11-19 08:31:26,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 08:31:26,341 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 2 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 103 [2022-11-19 08:31:26,342 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 08:31:26,419 INFO L225 Difference]: With dead ends: 18585 [2022-11-19 08:31:26,419 INFO L226 Difference]: Without dead ends: 12328 [2022-11-19 08:31:26,440 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 08:31:26,441 INFO L413 NwaCegarLoop]: 256 mSDtfsCounter, 45 mSDsluCounter, 233 mSDsCounter, 0 mSdLazyCounter, 83 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 489 SdHoareTripleChecker+Invalid, 84 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 83 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-19 08:31:26,441 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [63 Valid, 489 Invalid, 84 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 83 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-19 08:31:26,455 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12328 states. [2022-11-19 08:31:27,423 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12328 to 12323. [2022-11-19 08:31:27,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12323 states, 9014 states have (on average 1.5001109385400488) internal successors, (13522), 9018 states have internal predecessors, (13522), 3280 states have call successors, (3280), 28 states have call predecessors, (3280), 28 states have return successors, (3279), 3278 states have call predecessors, (3279), 3279 states have call successors, (3279) [2022-11-19 08:31:27,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12323 states to 12323 states and 20081 transitions. [2022-11-19 08:31:27,501 INFO L78 Accepts]: Start accepts. Automaton has 12323 states and 20081 transitions. Word has length 103 [2022-11-19 08:31:27,502 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 08:31:27,502 INFO L495 AbstractCegarLoop]: Abstraction has 12323 states and 20081 transitions. [2022-11-19 08:31:27,502 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 2 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-11-19 08:31:27,502 INFO L276 IsEmpty]: Start isEmpty. Operand 12323 states and 20081 transitions. [2022-11-19 08:31:27,543 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2022-11-19 08:31:27,543 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:31:27,544 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 08:31:27,544 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-19 08:31:27,544 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 08:31:27,545 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:31:27,545 INFO L85 PathProgramCache]: Analyzing trace with hash -1079901658, now seen corresponding path program 1 times [2022-11-19 08:31:27,545 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 08:31:27,545 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1010752148] [2022-11-19 08:31:27,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:31:27,546 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 08:31:27,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:31:27,650 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-19 08:31:27,651 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 08:31:27,651 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1010752148] [2022-11-19 08:31:27,651 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1010752148] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 08:31:27,651 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 08:31:27,651 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 08:31:27,652 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1596595696] [2022-11-19 08:31:27,652 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 08:31:27,653 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 08:31:27,653 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 08:31:27,654 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 08:31:27,654 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 08:31:27,654 INFO L87 Difference]: Start difference. First operand 12323 states and 20081 transitions. Second operand has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 2 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-11-19 08:31:29,430 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 08:31:29,430 INFO L93 Difference]: Finished difference Result 32589 states and 53452 transitions. [2022-11-19 08:31:29,430 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 08:31:29,431 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 2 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 104 [2022-11-19 08:31:29,431 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 08:31:29,552 INFO L225 Difference]: With dead ends: 32589 [2022-11-19 08:31:29,552 INFO L226 Difference]: Without dead ends: 21840 [2022-11-19 08:31:29,715 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 08:31:29,716 INFO L413 NwaCegarLoop]: 256 mSDtfsCounter, 43 mSDsluCounter, 234 mSDsCounter, 0 mSdLazyCounter, 82 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 490 SdHoareTripleChecker+Invalid, 83 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 82 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-19 08:31:29,717 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [61 Valid, 490 Invalid, 83 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 82 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-19 08:31:29,740 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21840 states. [2022-11-19 08:31:31,217 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21840 to 21835. [2022-11-19 08:31:31,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21835 states, 16076 states have (on average 1.4925976611097287) internal successors, (23995), 16080 states have internal predecessors, (23995), 5730 states have call successors, (5730), 28 states have call predecessors, (5730), 28 states have return successors, (5729), 5728 states have call predecessors, (5729), 5729 states have call successors, (5729) [2022-11-19 08:31:31,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21835 states to 21835 states and 35454 transitions. [2022-11-19 08:31:31,469 INFO L78 Accepts]: Start accepts. Automaton has 21835 states and 35454 transitions. Word has length 104 [2022-11-19 08:31:31,469 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 08:31:31,469 INFO L495 AbstractCegarLoop]: Abstraction has 21835 states and 35454 transitions. [2022-11-19 08:31:31,470 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 2 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-11-19 08:31:31,470 INFO L276 IsEmpty]: Start isEmpty. Operand 21835 states and 35454 transitions. [2022-11-19 08:31:31,503 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2022-11-19 08:31:31,503 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:31:31,503 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 08:31:31,504 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-19 08:31:31,504 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 08:31:31,504 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:31:31,504 INFO L85 PathProgramCache]: Analyzing trace with hash -1725218499, now seen corresponding path program 1 times [2022-11-19 08:31:31,505 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 08:31:31,505 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1243359143] [2022-11-19 08:31:31,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:31:31,505 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 08:31:31,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:31:31,603 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-11-19 08:31:31,603 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 08:31:31,604 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1243359143] [2022-11-19 08:31:31,604 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1243359143] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 08:31:31,604 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 08:31:31,604 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 08:31:31,604 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1242871763] [2022-11-19 08:31:31,605 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 08:31:31,605 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 08:31:31,605 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 08:31:31,606 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 08:31:31,606 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 08:31:31,606 INFO L87 Difference]: Start difference. First operand 21835 states and 35454 transitions. Second operand has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 2 states have call successors, (23), 2 states have call predecessors, (23), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2022-11-19 08:31:34,774 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 08:31:34,774 INFO L93 Difference]: Finished difference Result 59276 states and 96704 transitions. [2022-11-19 08:31:34,775 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 08:31:34,775 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 2 states have call successors, (23), 2 states have call predecessors, (23), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) Word has length 116 [2022-11-19 08:31:34,775 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 08:31:34,963 INFO L225 Difference]: With dead ends: 59276 [2022-11-19 08:31:34,964 INFO L226 Difference]: Without dead ends: 39610 [2022-11-19 08:31:35,022 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 08:31:35,024 INFO L413 NwaCegarLoop]: 258 mSDtfsCounter, 41 mSDsluCounter, 235 mSDsCounter, 0 mSdLazyCounter, 84 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 59 SdHoareTripleChecker+Valid, 493 SdHoareTripleChecker+Invalid, 85 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 84 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-19 08:31:35,024 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [59 Valid, 493 Invalid, 85 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 84 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-19 08:31:35,070 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39610 states. [2022-11-19 08:31:38,174 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39610 to 39605. [2022-11-19 08:31:38,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39605 states, 29333 states have (on average 1.481982749803975) internal successors, (43471), 29337 states have internal predecessors, (43471), 10243 states have call successors, (10243), 28 states have call predecessors, (10243), 28 states have return successors, (10242), 10241 states have call predecessors, (10242), 10242 states have call successors, (10242) [2022-11-19 08:31:38,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39605 states to 39605 states and 63956 transitions. [2022-11-19 08:31:38,370 INFO L78 Accepts]: Start accepts. Automaton has 39605 states and 63956 transitions. Word has length 116 [2022-11-19 08:31:38,371 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 08:31:38,371 INFO L495 AbstractCegarLoop]: Abstraction has 39605 states and 63956 transitions. [2022-11-19 08:31:38,371 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 2 states have call successors, (23), 2 states have call predecessors, (23), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2022-11-19 08:31:38,372 INFO L276 IsEmpty]: Start isEmpty. Operand 39605 states and 63956 transitions. [2022-11-19 08:31:38,430 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2022-11-19 08:31:38,430 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:31:38,431 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 08:31:38,431 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-19 08:31:38,431 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 08:31:38,432 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:31:38,432 INFO L85 PathProgramCache]: Analyzing trace with hash -1979593690, now seen corresponding path program 1 times [2022-11-19 08:31:38,432 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 08:31:38,432 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1050783903] [2022-11-19 08:31:38,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:31:38,433 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 08:31:38,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:31:38,574 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-19 08:31:38,574 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 08:31:38,574 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1050783903] [2022-11-19 08:31:38,575 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1050783903] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 08:31:38,575 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 08:31:38,575 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 08:31:38,575 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [395294802] [2022-11-19 08:31:38,575 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 08:31:38,576 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 08:31:38,576 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 08:31:38,577 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 08:31:38,577 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 08:31:38,577 INFO L87 Difference]: Start difference. First operand 39605 states and 63956 transitions. Second operand has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 2 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-11-19 08:31:42,950 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 08:31:42,950 INFO L93 Difference]: Finished difference Result 73174 states and 118339 transitions. [2022-11-19 08:31:42,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 08:31:42,951 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 2 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 106 [2022-11-19 08:31:42,951 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 08:31:43,373 INFO L225 Difference]: With dead ends: 73174 [2022-11-19 08:31:43,373 INFO L226 Difference]: Without dead ends: 73053 [2022-11-19 08:31:43,399 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 08:31:43,400 INFO L413 NwaCegarLoop]: 256 mSDtfsCounter, 39 mSDsluCounter, 234 mSDsCounter, 0 mSdLazyCounter, 82 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 57 SdHoareTripleChecker+Valid, 490 SdHoareTripleChecker+Invalid, 83 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 82 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-19 08:31:43,400 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [57 Valid, 490 Invalid, 83 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 82 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-19 08:31:43,477 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73053 states. [2022-11-19 08:31:48,227 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73053 to 73048. [2022-11-19 08:31:48,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73048 states, 54408 states have (on average 1.4680377885605058) internal successors, (79873), 54412 states have internal predecessors, (79873), 18611 states have call successors, (18611), 28 states have call predecessors, (18611), 28 states have return successors, (18610), 18609 states have call predecessors, (18610), 18610 states have call successors, (18610) [2022-11-19 08:31:49,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73048 states to 73048 states and 117094 transitions. [2022-11-19 08:31:49,040 INFO L78 Accepts]: Start accepts. Automaton has 73048 states and 117094 transitions. Word has length 106 [2022-11-19 08:31:49,040 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 08:31:49,041 INFO L495 AbstractCegarLoop]: Abstraction has 73048 states and 117094 transitions. [2022-11-19 08:31:49,041 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 2 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-11-19 08:31:49,041 INFO L276 IsEmpty]: Start isEmpty. Operand 73048 states and 117094 transitions. [2022-11-19 08:31:49,085 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2022-11-19 08:31:49,085 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:31:49,086 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 08:31:49,086 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-19 08:31:49,086 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 08:31:49,086 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:31:49,087 INFO L85 PathProgramCache]: Analyzing trace with hash 1719036514, now seen corresponding path program 1 times [2022-11-19 08:31:49,087 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 08:31:49,087 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1162596344] [2022-11-19 08:31:49,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:31:49,087 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 08:31:49,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:31:50,451 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-19 08:31:50,452 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 08:31:50,452 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1162596344] [2022-11-19 08:31:50,452 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1162596344] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 08:31:50,452 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 08:31:50,452 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-11-19 08:31:50,452 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1598781424] [2022-11-19 08:31:50,452 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 08:31:50,453 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-11-19 08:31:50,453 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 08:31:50,453 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-11-19 08:31:50,453 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=332, Unknown=0, NotChecked=0, Total=380 [2022-11-19 08:31:50,454 INFO L87 Difference]: Start difference. First operand 73048 states and 117094 transitions. Second operand has 20 states, 15 states have (on average 4.2) internal successors, (63), 16 states have internal predecessors, (63), 11 states have call successors, (20), 4 states have call predecessors, (20), 3 states have return successors, (17), 10 states have call predecessors, (17), 10 states have call successors, (17) [2022-11-19 08:31:57,481 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 08:31:57,482 INFO L93 Difference]: Finished difference Result 73234 states and 117347 transitions. [2022-11-19 08:31:57,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-11-19 08:31:57,482 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 15 states have (on average 4.2) internal successors, (63), 16 states have internal predecessors, (63), 11 states have call successors, (20), 4 states have call predecessors, (20), 3 states have return successors, (17), 10 states have call predecessors, (17), 10 states have call successors, (17) Word has length 107 [2022-11-19 08:31:57,483 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 08:31:57,878 INFO L225 Difference]: With dead ends: 73234 [2022-11-19 08:31:57,878 INFO L226 Difference]: Without dead ends: 73230 [2022-11-19 08:31:57,908 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 183 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=170, Invalid=1090, Unknown=0, NotChecked=0, Total=1260 [2022-11-19 08:31:57,910 INFO L413 NwaCegarLoop]: 309 mSDtfsCounter, 465 mSDsluCounter, 3238 mSDsCounter, 0 mSdLazyCounter, 3315 mSolverCounterSat, 156 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 469 SdHoareTripleChecker+Valid, 3547 SdHoareTripleChecker+Invalid, 3471 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 156 IncrementalHoareTripleChecker+Valid, 3315 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-11-19 08:31:57,910 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [469 Valid, 3547 Invalid, 3471 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [156 Valid, 3315 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2022-11-19 08:31:57,982 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73230 states.