./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/email_spec7_product34.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 2329fc70 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_019fe4cf-56e3-4669-b02b-5fff5a81ac3c/bin/utaipan-gh47qXpMRh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_019fe4cf-56e3-4669-b02b-5fff5a81ac3c/bin/utaipan-gh47qXpMRh/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_019fe4cf-56e3-4669-b02b-5fff5a81ac3c/bin/utaipan-gh47qXpMRh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_019fe4cf-56e3-4669-b02b-5fff5a81ac3c/bin/utaipan-gh47qXpMRh/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/email_spec7_product34.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_019fe4cf-56e3-4669-b02b-5fff5a81ac3c/bin/utaipan-gh47qXpMRh/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_019fe4cf-56e3-4669-b02b-5fff5a81ac3c/bin/utaipan-gh47qXpMRh --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 5f7b52dfa978a30892cebb35c28a84cc12db47d20591a31b18d58060a0678455 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-2329fc7 [2022-12-14 15:26:21,116 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-14 15:26:21,118 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-14 15:26:21,136 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-14 15:26:21,136 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-14 15:26:21,137 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-14 15:26:21,138 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-14 15:26:21,140 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-14 15:26:21,141 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-14 15:26:21,142 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-14 15:26:21,143 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-14 15:26:21,144 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-14 15:26:21,144 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-14 15:26:21,145 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-14 15:26:21,146 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-14 15:26:21,147 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-14 15:26:21,148 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-14 15:26:21,149 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-14 15:26:21,150 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-14 15:26:21,152 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-14 15:26:21,153 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-14 15:26:21,154 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-14 15:26:21,155 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-14 15:26:21,156 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-14 15:26:21,159 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-14 15:26:21,159 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-14 15:26:21,160 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-14 15:26:21,160 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-14 15:26:21,161 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-14 15:26:21,162 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-14 15:26:21,162 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-14 15:26:21,163 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-14 15:26:21,163 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-14 15:26:21,164 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-14 15:26:21,165 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-14 15:26:21,165 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-14 15:26:21,165 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-14 15:26:21,166 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-14 15:26:21,166 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-14 15:26:21,166 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-14 15:26:21,167 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-14 15:26:21,167 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_019fe4cf-56e3-4669-b02b-5fff5a81ac3c/bin/utaipan-gh47qXpMRh/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-12-14 15:26:21,180 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-14 15:26:21,181 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-14 15:26:21,181 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-14 15:26:21,181 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-14 15:26:21,181 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-14 15:26:21,187 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-14 15:26:21,188 INFO L138 SettingsManager]: * User list type=DISABLED [2022-12-14 15:26:21,188 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-12-14 15:26:21,188 INFO L138 SettingsManager]: * Explicit value domain=true [2022-12-14 15:26:21,188 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-12-14 15:26:21,188 INFO L138 SettingsManager]: * Octagon Domain=false [2022-12-14 15:26:21,188 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-12-14 15:26:21,188 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-12-14 15:26:21,189 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-12-14 15:26:21,189 INFO L138 SettingsManager]: * Interval Domain=false [2022-12-14 15:26:21,189 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-12-14 15:26:21,189 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-12-14 15:26:21,189 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-12-14 15:26:21,190 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-14 15:26:21,190 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-14 15:26:21,190 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-14 15:26:21,190 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-14 15:26:21,190 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-14 15:26:21,191 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-14 15:26:21,191 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-14 15:26:21,191 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-14 15:26:21,191 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-14 15:26:21,191 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-14 15:26:21,191 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-14 15:26:21,191 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-14 15:26:21,192 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-14 15:26:21,192 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-14 15:26:21,192 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 15:26:21,192 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-14 15:26:21,192 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-12-14 15:26:21,192 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-14 15:26:21,193 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-14 15:26:21,193 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-12-14 15:26:21,193 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-14 15:26:21,193 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-14 15:26:21,193 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-12-14 15:26:21,193 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_019fe4cf-56e3-4669-b02b-5fff5a81ac3c/bin/utaipan-gh47qXpMRh/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_019fe4cf-56e3-4669-b02b-5fff5a81ac3c/bin/utaipan-gh47qXpMRh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5f7b52dfa978a30892cebb35c28a84cc12db47d20591a31b18d58060a0678455 [2022-12-14 15:26:21,352 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-14 15:26:21,372 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-14 15:26:21,374 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-14 15:26:21,375 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-14 15:26:21,376 INFO L275 PluginConnector]: CDTParser initialized [2022-12-14 15:26:21,377 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_019fe4cf-56e3-4669-b02b-5fff5a81ac3c/bin/utaipan-gh47qXpMRh/../../sv-benchmarks/c/product-lines/email_spec7_product34.cil.c [2022-12-14 15:26:23,903 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-14 15:26:24,161 INFO L351 CDTParser]: Found 1 translation units. [2022-12-14 15:26:24,161 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_019fe4cf-56e3-4669-b02b-5fff5a81ac3c/sv-benchmarks/c/product-lines/email_spec7_product34.cil.c [2022-12-14 15:26:24,177 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_019fe4cf-56e3-4669-b02b-5fff5a81ac3c/bin/utaipan-gh47qXpMRh/data/161c30e7c/7135670aa1e942e8a17cfeb3c47dd2de/FLAGa17b56825 [2022-12-14 15:26:24,190 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_019fe4cf-56e3-4669-b02b-5fff5a81ac3c/bin/utaipan-gh47qXpMRh/data/161c30e7c/7135670aa1e942e8a17cfeb3c47dd2de [2022-12-14 15:26:24,193 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-14 15:26:24,194 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-14 15:26:24,195 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-14 15:26:24,196 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-14 15:26:24,199 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-14 15:26:24,200 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 03:26:24" (1/1) ... [2022-12-14 15:26:24,201 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5215701b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:26:24, skipping insertion in model container [2022-12-14 15:26:24,201 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 03:26:24" (1/1) ... [2022-12-14 15:26:24,208 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-14 15:26:24,252 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-14 15:26:24,484 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 15:26:24,487 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 15:26:24,491 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 15:26:24,531 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_019fe4cf-56e3-4669-b02b-5fff5a81ac3c/sv-benchmarks/c/product-lines/email_spec7_product34.cil.c[10988,11001] [2022-12-14 15:26:24,666 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 15:26:24,672 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 15:26:24,672 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 15:26:24,673 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 15:26:24,682 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 15:26:24,688 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 15:26:24,697 INFO L203 MainTranslator]: Completed pre-run [2022-12-14 15:26:24,707 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 15:26:24,708 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 15:26:24,710 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 15:26:24,716 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_019fe4cf-56e3-4669-b02b-5fff5a81ac3c/sv-benchmarks/c/product-lines/email_spec7_product34.cil.c[10988,11001] [2022-12-14 15:26:24,751 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 15:26:24,752 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 15:26:24,753 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 15:26:24,754 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 15:26:24,757 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 15:26:24,762 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 15:26:24,782 INFO L208 MainTranslator]: Completed translation [2022-12-14 15:26:24,783 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:26:24 WrapperNode [2022-12-14 15:26:24,783 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-14 15:26:24,784 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-14 15:26:24,784 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-14 15:26:24,784 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-14 15:26:24,790 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:26:24" (1/1) ... [2022-12-14 15:26:24,813 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:26:24" (1/1) ... [2022-12-14 15:26:24,858 INFO L138 Inliner]: procedures = 134, calls = 234, calls flagged for inlining = 62, calls inlined = 59, statements flattened = 1083 [2022-12-14 15:26:24,859 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-14 15:26:24,859 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-14 15:26:24,859 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-14 15:26:24,859 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-14 15:26:24,869 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:26:24" (1/1) ... [2022-12-14 15:26:24,869 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:26:24" (1/1) ... [2022-12-14 15:26:24,875 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:26:24" (1/1) ... [2022-12-14 15:26:24,876 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:26:24" (1/1) ... [2022-12-14 15:26:24,896 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:26:24" (1/1) ... [2022-12-14 15:26:24,904 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:26:24" (1/1) ... [2022-12-14 15:26:24,908 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:26:24" (1/1) ... [2022-12-14 15:26:24,911 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:26:24" (1/1) ... [2022-12-14 15:26:24,916 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-14 15:26:24,917 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-14 15:26:24,917 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-14 15:26:24,917 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-14 15:26:24,918 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:26:24" (1/1) ... [2022-12-14 15:26:24,923 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 15:26:24,932 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_019fe4cf-56e3-4669-b02b-5fff5a81ac3c/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 15:26:24,943 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_019fe4cf-56e3-4669-b02b-5fff5a81ac3c/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-14 15:26:24,945 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_019fe4cf-56e3-4669-b02b-5fff5a81ac3c/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-14 15:26:24,978 INFO L130 BoogieDeclarations]: Found specification of procedure getClientPrivateKey [2022-12-14 15:26:24,978 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientPrivateKey [2022-12-14 15:26:24,979 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookSize [2022-12-14 15:26:24,979 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookSize [2022-12-14 15:26:24,979 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailEncryptionKey [2022-12-14 15:26:24,979 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailEncryptionKey [2022-12-14 15:26:24,979 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookAddress [2022-12-14 15:26:24,979 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookAddress [2022-12-14 15:26:24,979 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailEncryptionKey [2022-12-14 15:26:24,980 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailEncryptionKey [2022-12-14 15:26:24,980 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2022-12-14 15:26:24,980 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2022-12-14 15:26:24,980 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2022-12-14 15:26:24,980 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2022-12-14 15:26:24,980 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable [2022-12-14 15:26:24,980 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable [2022-12-14 15:26:24,981 INFO L130 BoogieDeclarations]: Found specification of procedure createClientKeyringEntry [2022-12-14 15:26:24,981 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientKeyringEntry [2022-12-14 15:26:24,981 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsEncrypted [2022-12-14 15:26:24,981 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsEncrypted [2022-12-14 15:26:24,981 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSignKey [2022-12-14 15:26:24,981 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSignKey [2022-12-14 15:26:24,981 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAdd [2022-12-14 15:26:24,981 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAdd [2022-12-14 15:26:24,982 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2022-12-14 15:26:24,982 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailFrom [2022-12-14 15:26:24,982 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailFrom [2022-12-14 15:26:24,982 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2022-12-14 15:26:24,982 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2022-12-14 15:26:24,982 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-14 15:26:24,982 INFO L130 BoogieDeclarations]: Found specification of procedure isSigned [2022-12-14 15:26:24,982 INFO L138 BoogieDeclarations]: Found implementation of procedure isSigned [2022-12-14 15:26:24,983 INFO L130 BoogieDeclarations]: Found specification of procedure isKeyPairValid [2022-12-14 15:26:24,983 INFO L138 BoogieDeclarations]: Found implementation of procedure isKeyPairValid [2022-12-14 15:26:24,983 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookSize [2022-12-14 15:26:24,983 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookSize [2022-12-14 15:26:24,983 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringUser [2022-12-14 15:26:24,983 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringUser [2022-12-14 15:26:24,983 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringPublicKey [2022-12-14 15:26:24,983 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringPublicKey [2022-12-14 15:26:24,983 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2022-12-14 15:26:24,984 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2022-12-14 15:26:24,984 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing__wrappee__Encrypt [2022-12-14 15:26:24,984 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing__wrappee__Encrypt [2022-12-14 15:26:24,984 INFO L130 BoogieDeclarations]: Found specification of procedure findPublicKey [2022-12-14 15:26:24,984 INFO L138 BoogieDeclarations]: Found implementation of procedure findPublicKey [2022-12-14 15:26:24,984 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2022-12-14 15:26:24,984 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2022-12-14 15:26:24,984 INFO L130 BoogieDeclarations]: Found specification of procedure isEncrypted [2022-12-14 15:26:24,985 INFO L138 BoogieDeclarations]: Found implementation of procedure isEncrypted [2022-12-14 15:26:24,985 INFO L130 BoogieDeclarations]: Found specification of procedure setClientPrivateKey [2022-12-14 15:26:24,985 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientPrivateKey [2022-12-14 15:26:24,985 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailTo [2022-12-14 15:26:24,985 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailTo [2022-12-14 15:26:24,985 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-14 15:26:24,985 INFO L130 BoogieDeclarations]: Found specification of procedure generateKeyPair [2022-12-14 15:26:24,985 INFO L138 BoogieDeclarations]: Found implementation of procedure generateKeyPair [2022-12-14 15:26:24,985 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookAddress [2022-12-14 15:26:24,986 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookAddress [2022-12-14 15:26:24,986 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-14 15:26:24,986 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-14 15:26:25,147 INFO L235 CfgBuilder]: Building ICFG [2022-12-14 15:26:25,148 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-14 15:26:25,733 INFO L276 CfgBuilder]: Performing block encoding [2022-12-14 15:26:26,223 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-14 15:26:26,223 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-12-14 15:26:26,225 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 03:26:26 BoogieIcfgContainer [2022-12-14 15:26:26,225 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-14 15:26:26,227 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-14 15:26:26,227 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-14 15:26:26,229 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-14 15:26:26,229 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.12 03:26:24" (1/3) ... [2022-12-14 15:26:26,230 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@8a33234 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 03:26:26, skipping insertion in model container [2022-12-14 15:26:26,230 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:26:24" (2/3) ... [2022-12-14 15:26:26,230 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@8a33234 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 03:26:26, skipping insertion in model container [2022-12-14 15:26:26,230 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 03:26:26" (3/3) ... [2022-12-14 15:26:26,231 INFO L112 eAbstractionObserver]: Analyzing ICFG email_spec7_product34.cil.c [2022-12-14 15:26:26,245 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-14 15:26:26,245 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-12-14 15:26:26,282 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-14 15:26:26,286 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;@5c14bbfb, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-14 15:26:26,286 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-12-14 15:26:26,291 INFO L276 IsEmpty]: Start isEmpty. Operand has 228 states, 128 states have (on average 1.2890625) internal successors, (165), 133 states have internal predecessors, (165), 70 states have call successors, (70), 28 states have call predecessors, (70), 28 states have return successors, (70), 69 states have call predecessors, (70), 70 states have call successors, (70) [2022-12-14 15:26:26,300 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2022-12-14 15:26:26,300 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 15:26:26,300 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] [2022-12-14 15:26:26,301 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting outgoing__wrappee__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 15:26:26,304 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 15:26:26,304 INFO L85 PathProgramCache]: Analyzing trace with hash -1076360082, now seen corresponding path program 1 times [2022-12-14 15:26:26,311 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 15:26:26,311 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [494477219] [2022-12-14 15:26:26,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 15:26:26,312 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 15:26:26,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 15:26:26,609 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-12-14 15:26:26,609 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 15:26:26,609 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [494477219] [2022-12-14 15:26:26,610 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [494477219] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 15:26:26,610 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 15:26:26,610 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-14 15:26:26,612 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1519481147] [2022-12-14 15:26:26,613 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 15:26:26,617 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-12-14 15:26:26,617 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 15:26:26,644 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-12-14 15:26:26,645 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-12-14 15:26:26,648 INFO L87 Difference]: Start difference. First operand has 228 states, 128 states have (on average 1.2890625) internal successors, (165), 133 states have internal predecessors, (165), 70 states have call successors, (70), 28 states have call predecessors, (70), 28 states have return successors, (70), 69 states have call predecessors, (70), 70 states have call successors, (70) Second operand has 2 states, 2 states have (on average 20.0) internal successors, (40), 2 states have internal predecessors, (40), 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) [2022-12-14 15:26:26,787 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 15:26:26,788 INFO L93 Difference]: Finished difference Result 364 states and 481 transitions. [2022-12-14 15:26:26,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-12-14 15:26:26,790 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 20.0) internal successors, (40), 2 states have internal predecessors, (40), 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 84 [2022-12-14 15:26:26,790 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 15:26:26,797 INFO L225 Difference]: With dead ends: 364 [2022-12-14 15:26:26,797 INFO L226 Difference]: Without dead ends: 225 [2022-12-14 15:26:26,801 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-12-14 15:26:26,803 INFO L413 NwaCegarLoop]: 258 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 258 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 15:26:26,803 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 258 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 15:26:26,815 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 225 states. [2022-12-14 15:26:26,839 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 225 to 225. [2022-12-14 15:26:26,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 225 states, 126 states have (on average 1.2619047619047619) internal successors, (159), 130 states have internal predecessors, (159), 70 states have call successors, (70), 28 states have call predecessors, (70), 28 states have return successors, (69), 68 states have call predecessors, (69), 69 states have call successors, (69) [2022-12-14 15:26:26,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 225 states to 225 states and 298 transitions. [2022-12-14 15:26:26,843 INFO L78 Accepts]: Start accepts. Automaton has 225 states and 298 transitions. Word has length 84 [2022-12-14 15:26:26,844 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 15:26:26,844 INFO L495 AbstractCegarLoop]: Abstraction has 225 states and 298 transitions. [2022-12-14 15:26:26,844 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 20.0) internal successors, (40), 2 states have internal predecessors, (40), 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) [2022-12-14 15:26:26,844 INFO L276 IsEmpty]: Start isEmpty. Operand 225 states and 298 transitions. [2022-12-14 15:26:26,847 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2022-12-14 15:26:26,847 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 15:26:26,847 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] [2022-12-14 15:26:26,847 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-14 15:26:26,847 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting outgoing__wrappee__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 15:26:26,848 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 15:26:26,848 INFO L85 PathProgramCache]: Analyzing trace with hash 1982698790, now seen corresponding path program 1 times [2022-12-14 15:26:26,848 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 15:26:26,848 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [51758715] [2022-12-14 15:26:26,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 15:26:26,848 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 15:26:26,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 15:26:26,981 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-12-14 15:26:26,981 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 15:26:26,982 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [51758715] [2022-12-14 15:26:26,982 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [51758715] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 15:26:26,982 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 15:26:26,982 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 15:26:26,982 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [167742197] [2022-12-14 15:26:26,982 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 15:26:26,984 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 15:26:26,984 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 15:26:26,985 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 15:26:26,985 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 15:26:26,986 INFO L87 Difference]: Start difference. First operand 225 states and 298 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) [2022-12-14 15:26:27,115 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 15:26:27,115 INFO L93 Difference]: Finished difference Result 360 states and 466 transitions. [2022-12-14 15:26:27,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 15:26:27,116 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 [2022-12-14 15:26:27,116 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 15:26:27,118 INFO L225 Difference]: With dead ends: 360 [2022-12-14 15:26:27,119 INFO L226 Difference]: Without dead ends: 227 [2022-12-14 15:26:27,120 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 15:26:27,121 INFO L413 NwaCegarLoop]: 255 mSDtfsCounter, 0 mSDsluCounter, 254 mSDsCounter, 0 mSdLazyCounter, 86 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 509 SdHoareTripleChecker+Invalid, 86 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 86 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 15:26:27,122 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 509 Invalid, 86 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 86 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 15:26:27,123 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 227 states. [2022-12-14 15:26:27,140 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 227 to 227. [2022-12-14 15:26:27,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 227 states, 128 states have (on average 1.2578125) internal successors, (161), 132 states have internal predecessors, (161), 70 states have call successors, (70), 28 states have call predecessors, (70), 28 states have return successors, (69), 68 states have call predecessors, (69), 69 states have call successors, (69) [2022-12-14 15:26:27,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 227 states to 227 states and 300 transitions. [2022-12-14 15:26:27,143 INFO L78 Accepts]: Start accepts. Automaton has 227 states and 300 transitions. Word has length 85 [2022-12-14 15:26:27,154 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 15:26:27,154 INFO L495 AbstractCegarLoop]: Abstraction has 227 states and 300 transitions. [2022-12-14 15:26:27,155 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) [2022-12-14 15:26:27,155 INFO L276 IsEmpty]: Start isEmpty. Operand 227 states and 300 transitions. [2022-12-14 15:26:27,159 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2022-12-14 15:26:27,160 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 15:26:27,160 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] [2022-12-14 15:26:27,160 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-14 15:26:27,160 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting outgoing__wrappee__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 15:26:27,161 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 15:26:27,161 INFO L85 PathProgramCache]: Analyzing trace with hash -1184827570, now seen corresponding path program 1 times [2022-12-14 15:26:27,161 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 15:26:27,162 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1074477269] [2022-12-14 15:26:27,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 15:26:27,162 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 15:26:27,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 15:26:27,232 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-12-14 15:26:27,232 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 15:26:27,232 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1074477269] [2022-12-14 15:26:27,232 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1074477269] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 15:26:27,232 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 15:26:27,232 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 15:26:27,233 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [493196724] [2022-12-14 15:26:27,233 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 15:26:27,233 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 15:26:27,233 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 15:26:27,234 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 15:26:27,234 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 15:26:27,234 INFO L87 Difference]: Start difference. First operand 227 states and 300 transitions. Second operand has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 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) [2022-12-14 15:26:27,347 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 15:26:27,347 INFO L93 Difference]: Finished difference Result 489 states and 667 transitions. [2022-12-14 15:26:27,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 15:26:27,348 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 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 90 [2022-12-14 15:26:27,348 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 15:26:27,350 INFO L225 Difference]: With dead ends: 489 [2022-12-14 15:26:27,350 INFO L226 Difference]: Without dead ends: 280 [2022-12-14 15:26:27,351 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 15:26:27,352 INFO L413 NwaCegarLoop]: 275 mSDtfsCounter, 59 mSDsluCounter, 251 mSDsCounter, 0 mSdLazyCounter, 89 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 77 SdHoareTripleChecker+Valid, 526 SdHoareTripleChecker+Invalid, 90 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 89 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 15:26:27,352 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [77 Valid, 526 Invalid, 90 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 89 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 15:26:27,353 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 280 states. [2022-12-14 15:26:27,365 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 280 to 275. [2022-12-14 15:26:27,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 275 states, 162 states have (on average 1.3333333333333333) internal successors, (216), 166 states have internal predecessors, (216), 84 states have call successors, (84), 28 states have call predecessors, (84), 28 states have return successors, (83), 82 states have call predecessors, (83), 83 states have call successors, (83) [2022-12-14 15:26:27,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 275 states to 275 states and 383 transitions. [2022-12-14 15:26:27,367 INFO L78 Accepts]: Start accepts. Automaton has 275 states and 383 transitions. Word has length 90 [2022-12-14 15:26:27,367 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 15:26:27,367 INFO L495 AbstractCegarLoop]: Abstraction has 275 states and 383 transitions. [2022-12-14 15:26:27,367 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 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) [2022-12-14 15:26:27,368 INFO L276 IsEmpty]: Start isEmpty. Operand 275 states and 383 transitions. [2022-12-14 15:26:27,369 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2022-12-14 15:26:27,369 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 15:26:27,369 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] [2022-12-14 15:26:27,369 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-12-14 15:26:27,369 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting outgoing__wrappee__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 15:26:27,370 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 15:26:27,370 INFO L85 PathProgramCache]: Analyzing trace with hash -1043742366, now seen corresponding path program 1 times [2022-12-14 15:26:27,370 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 15:26:27,370 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [665289837] [2022-12-14 15:26:27,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 15:26:27,370 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 15:26:27,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 15:26:27,483 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-12-14 15:26:27,483 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 15:26:27,484 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [665289837] [2022-12-14 15:26:27,484 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [665289837] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 15:26:27,484 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1621875285] [2022-12-14 15:26:27,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 15:26:27,484 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 15:26:27,484 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_019fe4cf-56e3-4669-b02b-5fff5a81ac3c/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 15:26:27,485 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_019fe4cf-56e3-4669-b02b-5fff5a81ac3c/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 15:26:27,486 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_019fe4cf-56e3-4669-b02b-5fff5a81ac3c/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-12-14 15:26:27,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 15:26:27,755 INFO L263 TraceCheckSpWp]: Trace formula consists of 1135 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-14 15:26:27,762 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 15:26:27,809 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-12-14 15:26:27,810 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 15:26:27,878 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-12-14 15:26:27,878 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1621875285] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 15:26:27,878 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [18841539] [2022-12-14 15:26:27,893 INFO L159 IcfgInterpreter]: Started Sifa with 76 locations of interest [2022-12-14 15:26:27,893 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 15:26:27,896 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 15:26:27,900 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 15:26:27,900 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 15:26:58,665 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 439 for LOIs [2022-12-14 15:26:58,950 INFO L197 IcfgInterpreter]: Interpreting procedure sendEmail with input of size 264 for LOIs [2022-12-14 15:27:00,734 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailTo with input of size 234 for LOIs [2022-12-14 15:27:00,769 INFO L197 IcfgInterpreter]: Interpreting procedure setClientPrivateKey with input of size 450 for LOIs [2022-12-14 15:27:01,061 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing with input of size 266 for LOIs [2022-12-14 15:27:03,829 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing__wrappee__Encrypt with input of size 274 for LOIs [2022-12-14 15:27:19,450 INFO L197 IcfgInterpreter]: Interpreting procedure isReadable with input of size 248 for LOIs [2022-12-14 15:27:20,113 INFO L197 IcfgInterpreter]: Interpreting procedure isEncrypted with input of size 248 for LOIs [2022-12-14 15:27:20,152 INFO L197 IcfgInterpreter]: Interpreting procedure getClientPrivateKey with input of size 455 for LOIs [2022-12-14 15:27:20,709 INFO L197 IcfgInterpreter]: Interpreting procedure findPublicKey with input of size 246 for LOIs [2022-12-14 15:27:20,778 INFO L197 IcfgInterpreter]: Interpreting procedure getEmailTo with input of size 434 for LOIs [2022-12-14 15:27:21,347 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailFrom with input of size 476 for LOIs [2022-12-14 15:27:25,852 INFO L197 IcfgInterpreter]: Interpreting procedure getClientAddressBookSize with input of size 251 for LOIs [2022-12-14 15:27:25,896 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 15:28:09,736 WARN L233 SmtUtils]: Spent 5.18s on a formula simplification. DAG size of input: 566 DAG size of output: 431 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 15:28:59,719 WARN L233 SmtUtils]: Spent 6.25s on a formula simplification. DAG size of input: 434 DAG size of output: 341 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 15:29:06,004 WARN L233 SmtUtils]: Spent 5.76s on a formula simplification. DAG size of input: 453 DAG size of output: 349 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 15:29:57,167 WARN L233 SmtUtils]: Spent 8.64s on a formula simplification. DAG size of input: 601 DAG size of output: 398 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 15:30:02,510 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '3945#(and (<= |outgoing__wrappee__Encrypt_outgoing__wrappee__Keys_~msg#1| 1) (= ~__ste_Client_Keyring1_User2~0 0) (<= 1 |outgoing__wrappee__Encrypt_mail_#in~msg#1|) (= ~__GUIDSL_NON_TERMINAL_main~0 0) (<= |old(~__ste_email_isEncrypted1~0)| 0) (= ~__ste_email_subject0~0.offset 0) (<= 0 ~__ste_email_encryptionKey1~0) (= ~__SELECTED_FEATURE_Sign~0 0) (= 0 ~__ste_Client_AddressBook0_Address2~0) (= ~__ste_client_outbuffer3~0 0) (= ~__ste_Client_counter~0 0) (= ~__ste_Client_Keyring1_PublicKey2~0 0) (<= |outgoing__wrappee__Encrypt_~receiver~0#1| 2) (<= |old(~__ste_email_encryptionKey0~0)| 0) (<= ~__ste_email_encryptionKey1~0 0) (= |outgoing__wrappee__Encrypt_incoming__wrappee__Verify_#in~client#1| |outgoing__wrappee__Encrypt_incoming__wrappee__Verify_~client#1|) (<= |outgoing__wrappee__Encrypt_mail_#in~msg#1| 1) (<= ~__ste_email_isSignatureVerified1~0 0) (<= |old(~__ste_email_to0~0)| 2) (= ~__ste_client_autoResponse1~0 0) (= ~__ste_Client_AddressBook2_Alias0~0 0) (= 0 ~__ste_email_subject0~0.base) (= |outgoing__wrappee__Encrypt_~pubkey~0#1| 0) (= ~__ste_Client_AddressBook2_Alias1~0 0) (= ~__ste_Client_Keyring2_PublicKey2~0 0) (= ~__ste_client_forwardReceiver3~0 0) (<= |outgoing__wrappee__Encrypt_getClientId_~retValue_acc~37#1| 2147483647) (= |outgoing__wrappee__Encrypt___utac_acc__EncryptVerify_spec__1_~tmp~8#1| 0) (<= 1 |outgoing__wrappee__Encrypt_outgoing__wrappee__Keys_#in~client#1|) (<= |outgoing__wrappee__Encrypt_#in~client#1| 1) (<= 2 |outgoing__wrappee__Encrypt_incoming_#in~client#1|) (= ~__ste_client_name2~0.offset 0) (= ~__ste_client_name1~0.base 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__Encrypt_mail_~msg#1| 1) (<= 1 |outgoing__wrappee__Encrypt_outgoing__wrappee__Keys_#in~msg#1|) (<= ~__ste_client_idCounter2~0 3) (<= ~queued_message~0 0) (<= |old(~__ste_email_from0~0)| 0) (<= ~__ste_email_isSignatureVerified0~0 0) (= ~__ste_email_body1~0.offset 0) (<= 2 |outgoing__wrappee__Encrypt_verify_#in~client#1|) (= ~__SELECTED_FEATURE_Encrypt~0 0) (= ~__ste_Client_AddressBook1_Address2~0 0) (<= 1 |outgoing__wrappee__Encrypt_outgoing__wrappee__Keys_~msg#1|) (<= ~__ste_email_from0~0 2147483647) (= ~__ste_ClientAddressBook_size1~0 0) (= ~__ste_Client_Keyring0_PublicKey0~0 0) (= ~__ste_Email_counter~0 0) (= ~__ste_ClientKeyring_size1~0 0) (= ~__ste_email_body0~0.offset 0) (<= 1 |outgoing__wrappee__Encrypt_~client#1|) (<= 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) (<= 0 (+ |outgoing__wrappee__Encrypt_getClientId_~retValue_acc~37#1| 2147483648)) (= ~head~0.offset 0) (<= |outgoing__wrappee__Encrypt_incoming_~msg#1| 1) (= ~__ste_client_name0~0.offset 0) (= ~__ste_Client_Keyring0_PublicKey2~0 0) (<= 1 |outgoing__wrappee__Encrypt_mail_~client#1|) (<= 1 |outgoing__wrappee__Encrypt_incoming_~msg#1|) (<= |outgoing__wrappee__Encrypt_mail_~client#1| 1) (<= ~__ste_client_privateKey2~0 789) (= ~__ste_Client_Keyring1_PublicKey0~0 0) (<= 0 |old(~__ste_email_encryptionKey0~0)|) (<= |old(~queued_message~0)| 0) (<= 1 |old(~queue_empty~0)|) (<= ~queue_empty~0 1) (<= |outgoing__wrappee__Encrypt_incoming_~client#1| 2) (= |outgoing__wrappee__Encrypt_verify_~__utac__ad__arg1~0#1| |outgoing__wrappee__Encrypt_verify_~msg#1|) (<= |outgoing__wrappee__Encrypt_incoming_#in~msg#1| 1) (= ~__SELECTED_FEATURE_Decrypt~0 0) (<= 0 |old(~__ste_email_isEncrypted0~0)|) (<= 0 (+ ~__ste_email_signKey0~0 2147483648)) (<= 0 ~__ste_email_isEncrypted1~0) (= ~__SELECTED_FEATURE_Keys~0 0) (<= ~__ste_email_signKey0~0 2147483647) (<= 0 |old(~__ste_email_from0~0)|) (<= |outgoing__wrappee__Encrypt_outgoing__wrappee__Keys_#in~client#1| 1) (= ~__SELECTED_FEATURE_AddressBook~0 0) (= ~__ste_client_forwardReceiver2~0 0) (= ~__ste_Client_Keyring0_PublicKey1~0 0) (= ~__SELECTED_FEATURE_Forward~0 0) (<= 0 ~__ste_email_isEncrypted0~0) (= ~__ste_Client_Keyring0_User0~0 0) (= |outgoing__wrappee__Encrypt___utac_acc__EncryptVerify_spec__1_~msg#1| |outgoing__wrappee__Encrypt___utac_acc__EncryptVerify_spec__1_#in~msg#1|) (= |outgoing__wrappee__Encrypt_incoming_~privkey~0#1| 0) (<= 0 (+ |outgoing__wrappee__Encrypt_outgoing__wrappee__Keys_~tmp~15#1| 2147483648)) (<= ~__ste_client_idCounter0~0 2147483647) (= ~__ste_Client_Keyring2_PublicKey1~0 0) (<= |outgoing__wrappee__Encrypt_~tmp~16#1| 2) (= ~__ste_email_body0~0.base 0) (<= ~__ste_email_isSigned0~0 1) (<= ~__ste_email_isEncrypted0~0 0) (= ~__ste_Client_AddressBook0_Alias0~0 0) (<= |outgoing__wrappee__Encrypt_~client#1| 1) (<= 1 |outgoing__wrappee__Encrypt_#in~client#1|) (= ~__ste_email_id0~0 0) (= ~__ste_Client_Keyring2_User1~0 0) (= |outgoing__wrappee__Encrypt_verify_~client#1| |outgoing__wrappee__Encrypt_verify_#in~client#1|) (= |outgoing__wrappee__Encrypt_incoming__wrappee__Verify_#in~client#1| |outgoing__wrappee__Encrypt_incoming_~client#1|) (<= 3 ~__ste_client_idCounter2~0) (= ~__ste_Client_AddressBook2_Address2~0 0) (<= |outgoing__wrappee__Encrypt_getClientId_~handle#1| 1) (<= |outgoing__wrappee__Encrypt_~msg#1| 1) (= 3 ~chuck~0) (= ~__ste_Client_AddressBook2_Address1~0 0) (<= 0 ~__ste_email_signKey1~0) (<= 1 ~queue_empty~0) (<= ~__ste_email_signKey1~0 0) (<= 2 |outgoing__wrappee__Encrypt_mail_~tmp~14#1|) (<= ~__ste_email_isSigned1~0 0) (<= 0 |outgoing__wrappee__Encrypt_~tmp___0~5#1|) (= ~bob~0 1) (= ~__ste_client_forwardReceiver1~0 0) (<= |outgoing__wrappee__Encrypt_getClientId_#in~handle#1| 1) (<= 1 |outgoing__wrappee__Encrypt_getClientId_#in~handle#1|) (<= |outgoing__wrappee__Encrypt_~tmp___0~5#1| 0) (<= 0 ~queued_message~0) (<= 0 |old(~__ste_email_isSignatureVerified0~0)|) (= ~__ste_Client_AddressBook1_Alias2~0 0) (<= 0 ~__ste_email_isSignatureVerified1~0) (<= 1 |outgoing__wrappee__Encrypt_#in~msg#1|) (= ~__ste_client_outbuffer0~0 0) (<= 789 ~__ste_client_privateKey2~0) (<= |outgoing__wrappee__Encrypt_#in~msg#1| 1) (<= 0 |old(~__ste_email_isEncrypted1~0)|) (= ~__SELECTED_FEATURE_Base~0 0) (<= 2 |outgoing__wrappee__Encrypt_~receiver~0#1|) (<= |outgoing__wrappee__Encrypt_mail_~tmp~14#1| 2) (= ~__ste_client_forwardReceiver0~0 0) (= ~__ste_Client_Keyring2_User0~0 0) (= ~rjh~0 2) (= 0 ~__ste_Client_AddressBook0_Address1~0) (= ~__ste_Client_AddressBook2_Address0~0 0) (= ~__ste_Client_Keyring1_PublicKey1~0 0) (<= 0 ~queued_client~0) (<= 1 |outgoing__wrappee__Encrypt_mail_~msg#1|) (= ~__ste_Client_Keyring2_PublicKey0~0 0) (<= 0 ~__ste_email_isSignatureVerified0~0) (= ~__ste_Client_AddressBook1_Address0~0 0) (= ~__ste_client_name2~0.base 0) (<= 1 |outgoing__wrappee__Encrypt_~msg#1|) (<= 0 |old(~queued_client~0)|) (<= ~__ste_email_encryptionKey0~0 0) (<= |old(~__ste_email_encryptionKey1~0)| 0) (<= 1 |outgoing__wrappee__Encrypt___utac_acc__EncryptVerify_spec__1_~msg#1|) (= ~__ste_email_subject1~0.base 0) (<= |old(~queue_empty~0)| 1) (<= |outgoing__wrappee__Encrypt_incoming_#in~client#1| 2) (<= |outgoing__wrappee__Encrypt_outgoing__wrappee__Keys_~tmp~15#1| 2147483647) (= ~__ste_Client_AddressBook1_Alias0~0 0) (<= 1 |outgoing__wrappee__Encrypt_getClientId_~handle#1|) (= ~__ste_Client_Keyring2_User2~0 0) (<= 2 |outgoing__wrappee__Encrypt_~tmp~16#1|) (= ~head~0.base 0) (<= |outgoing__wrappee__Encrypt_outgoing__wrappee__Keys_~client#1| 1) (= ~__ste_Client_Keyring1_User1~0 0) (<= |outgoing__wrappee__Encrypt_verify_~msg#1| 1) (= |#NULL.offset| 0) (<= |outgoing__wrappee__Encrypt_outgoing__wrappee__Keys_#in~msg#1| 1) (= ~__ste_Client_AddressBook2_Alias2~0 0) (<= 1 |outgoing__wrappee__Encrypt_outgoing__wrappee__Keys_~client#1|) (<= 0 ~__ste_email_isSigned0~0) (<= 1 |outgoing__wrappee__Encrypt_mail_#in~client#1|) (= ~__ste_email_subject1~0.offset 0) (= |outgoing__wrappee__Encrypt_verify_~msg#1| |outgoing__wrappee__Encrypt_verify_#in~msg#1|) (= ~__ste_Client_AddressBook0_Alias2~0 0) (= ~__ste_ClientKeyring_size0~0 0) (<= |outgoing__wrappee__Encrypt_mail_#in~client#1| 1) (= ~__ste_Client_AddressBook1_Address1~0 0) (<= 1 |outgoing__wrappee__Encrypt_incoming_#in~msg#1|) (= |outgoing__wrappee__Encrypt_incoming__wrappee__Verify_~msg#1| |outgoing__wrappee__Encrypt_verify_#in~msg#1|) (= 0 ~__ste_Client_AddressBook0_Address0~0) (= ~__ste_client_outbuffer1~0 0) (= |outgoing__wrappee__Encrypt_incoming_~privkey~0#1| |outgoing__wrappee__Encrypt_incoming_~tmp~19#1|) (= ~__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) (<= |outgoing__wrappee__Encrypt_verify_~client#1| 2) (= ~__ste_client_name0~0.base 0) (= ~__ste_email_id1~0 0) (<= 0 (+ |outgoing__wrappee__Encrypt_getClientId_#res#1| 2147483648)) (<= 0 |old(~__ste_email_isSignatureVerified1~0)|) (= ~__ste_client_outbuffer2~0 0) (<= 0 (+ ~__ste_client_idCounter0~0 2147483648)) (<= 2 ~__ste_email_to0~0) (= |outgoing__wrappee__Encrypt_incoming__wrappee__Verify_~msg#1| |outgoing__wrappee__Encrypt_incoming__wrappee__Verify_#in~msg#1|) (<= 0 |#StackHeapBarrier|) (<= ~__ste_email_to0~0 2) (= ~__ste_ClientAddressBook_size2~0 0) (= ~__SELECTED_FEATURE_AutoResponder~0 0) (= ~__ste_client_autoResponse0~0 0) (= ~__ste_email_body1~0.base 0) (= ~__ste_ClientKeyring_size2~0 0) (<= 2 |outgoing__wrappee__Encrypt_incoming_~client#1|) (= ~__ste_client_autoResponse2~0 0) (<= |outgoing__wrappee__Encrypt___utac_acc__EncryptVerify_spec__1_#in~msg#1| 1) (<= 0 ~__ste_email_encryptionKey0~0) (= |#NULL.base| 0) (<= |outgoing__wrappee__Encrypt_getClientId_#res#1| 2147483647) (<= 1 |outgoing__wrappee__Encrypt_incoming__wrappee__Verify_~msg#1|) (<= ~queued_client~0 0))' at error location [2022-12-14 15:30:02,510 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-12-14 15:30:02,511 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-14 15:30:02,511 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2022-12-14 15:30:02,511 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [926513509] [2022-12-14 15:30:02,511 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-14 15:30:02,511 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-14 15:30:02,511 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 15:30:02,512 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-14 15:30:02,513 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=224, Invalid=5032, Unknown=0, NotChecked=0, Total=5256 [2022-12-14 15:30:02,513 INFO L87 Difference]: Start difference. First operand 275 states and 383 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) [2022-12-14 15:30:02,758 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 15:30:02,758 INFO L93 Difference]: Finished difference Result 683 states and 1016 transitions. [2022-12-14 15:30:02,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-14 15:30:02,759 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 [2022-12-14 15:30:02,759 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 15:30:02,762 INFO L225 Difference]: With dead ends: 683 [2022-12-14 15:30:02,762 INFO L226 Difference]: Without dead ends: 550 [2022-12-14 15:30:02,763 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 275 GetRequests, 201 SyntacticMatches, 3 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1317 ImplicationChecksByTransitivity, 156.5s TimeCoverageRelationStatistics Valid=224, Invalid=5032, Unknown=0, NotChecked=0, Total=5256 [2022-12-14 15:30:02,764 INFO L413 NwaCegarLoop]: 329 mSDtfsCounter, 219 mSDsluCounter, 862 mSDsCounter, 0 mSdLazyCounter, 279 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 273 SdHoareTripleChecker+Valid, 1191 SdHoareTripleChecker+Invalid, 298 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 279 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-12-14 15:30:02,765 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [273 Valid, 1191 Invalid, 298 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 279 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-12-14 15:30:02,765 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 550 states. [2022-12-14 15:30:02,785 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 550 to 535. [2022-12-14 15:30:02,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 535 states, 343 states have (on average 1.4635568513119535) internal successors, (502), 347 states have internal predecessors, (502), 163 states have call successors, (163), 28 states have call predecessors, (163), 28 states have return successors, (162), 161 states have call predecessors, (162), 162 states have call successors, (162) [2022-12-14 15:30:02,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 535 states to 535 states and 827 transitions. [2022-12-14 15:30:02,789 INFO L78 Accepts]: Start accepts. Automaton has 535 states and 827 transitions. Word has length 91 [2022-12-14 15:30:02,789 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 15:30:02,789 INFO L495 AbstractCegarLoop]: Abstraction has 535 states and 827 transitions. [2022-12-14 15:30:02,789 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) [2022-12-14 15:30:02,789 INFO L276 IsEmpty]: Start isEmpty. Operand 535 states and 827 transitions. [2022-12-14 15:30:02,792 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2022-12-14 15:30:02,792 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 15:30:02,792 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] [2022-12-14 15:30:02,799 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_019fe4cf-56e3-4669-b02b-5fff5a81ac3c/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-12-14 15:30:02,993 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_019fe4cf-56e3-4669-b02b-5fff5a81ac3c/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 15:30:02,994 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting outgoing__wrappee__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 15:30:02,995 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 15:30:02,996 INFO L85 PathProgramCache]: Analyzing trace with hash 1003185119, now seen corresponding path program 1 times [2022-12-14 15:30:02,996 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 15:30:02,997 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [222662242] [2022-12-14 15:30:02,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 15:30:02,998 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 15:30:03,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 15:30:03,164 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-12-14 15:30:03,165 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 15:30:03,165 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [222662242] [2022-12-14 15:30:03,165 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [222662242] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 15:30:03,165 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 15:30:03,165 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 15:30:03,165 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1379293874] [2022-12-14 15:30:03,165 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 15:30:03,166 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 15:30:03,166 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 15:30:03,167 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 15:30:03,167 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 15:30:03,167 INFO L87 Difference]: Start difference. First operand 535 states and 827 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) [2022-12-14 15:30:03,287 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 15:30:03,287 INFO L93 Difference]: Finished difference Result 1300 states and 2052 transitions. [2022-12-14 15:30:03,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 15:30:03,288 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 [2022-12-14 15:30:03,288 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 15:30:03,292 INFO L225 Difference]: With dead ends: 1300 [2022-12-14 15:30:03,292 INFO L226 Difference]: Without dead ends: 797 [2022-12-14 15:30:03,293 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 15:30:03,294 INFO L413 NwaCegarLoop]: 280 mSDtfsCounter, 57 mSDsluCounter, 253 mSDsCounter, 0 mSdLazyCounter, 90 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 75 SdHoareTripleChecker+Valid, 533 SdHoareTripleChecker+Invalid, 91 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 90 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 15:30:03,294 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [75 Valid, 533 Invalid, 91 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 90 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 15:30:03,295 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 797 states. [2022-12-14 15:30:03,321 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 797 to 792. [2022-12-14 15:30:03,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 792 states, 521 states have (on average 1.4875239923224568) internal successors, (775), 525 states have internal predecessors, (775), 242 states have call successors, (242), 28 states have call predecessors, (242), 28 states have return successors, (241), 240 states have call predecessors, (241), 241 states have call successors, (241) [2022-12-14 15:30:03,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 792 states to 792 states and 1258 transitions. [2022-12-14 15:30:03,325 INFO L78 Accepts]: Start accepts. Automaton has 792 states and 1258 transitions. Word has length 97 [2022-12-14 15:30:03,325 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 15:30:03,325 INFO L495 AbstractCegarLoop]: Abstraction has 792 states and 1258 transitions. [2022-12-14 15:30:03,326 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) [2022-12-14 15:30:03,326 INFO L276 IsEmpty]: Start isEmpty. Operand 792 states and 1258 transitions. [2022-12-14 15:30:03,328 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2022-12-14 15:30:03,328 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 15:30:03,328 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] [2022-12-14 15:30:03,329 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-12-14 15:30:03,329 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting outgoing__wrappee__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 15:30:03,329 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 15:30:03,329 INFO L85 PathProgramCache]: Analyzing trace with hash 105283468, now seen corresponding path program 1 times [2022-12-14 15:30:03,329 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 15:30:03,329 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1852896882] [2022-12-14 15:30:03,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 15:30:03,329 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 15:30:03,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 15:30:03,399 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-12-14 15:30:03,399 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 15:30:03,399 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1852896882] [2022-12-14 15:30:03,400 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1852896882] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 15:30:03,400 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 15:30:03,400 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 15:30:03,400 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1691803457] [2022-12-14 15:30:03,400 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 15:30:03,400 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 15:30:03,401 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 15:30:03,401 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 15:30:03,401 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 15:30:03,401 INFO L87 Difference]: Start difference. First operand 792 states and 1258 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, (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) [2022-12-14 15:30:03,545 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 15:30:03,545 INFO L93 Difference]: Finished difference Result 1922 states and 3099 transitions. [2022-12-14 15:30:03,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 15:30:03,546 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, (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 109 [2022-12-14 15:30:03,546 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 15:30:03,558 INFO L225 Difference]: With dead ends: 1922 [2022-12-14 15:30:03,558 INFO L226 Difference]: Without dead ends: 1192 [2022-12-14 15:30:03,561 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 15:30:03,561 INFO L413 NwaCegarLoop]: 273 mSDtfsCounter, 55 mSDsluCounter, 250 mSDsCounter, 0 mSdLazyCounter, 90 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 73 SdHoareTripleChecker+Valid, 523 SdHoareTripleChecker+Invalid, 91 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 90 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 15:30:03,562 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [73 Valid, 523 Invalid, 91 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 90 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 15:30:03,563 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1192 states. [2022-12-14 15:30:03,604 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1192 to 1187. [2022-12-14 15:30:03,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1187 states, 797 states have (on average 1.4993726474278544) internal successors, (1195), 801 states have internal predecessors, (1195), 361 states have call successors, (361), 28 states have call predecessors, (361), 28 states have return successors, (360), 359 states have call predecessors, (360), 360 states have call successors, (360) [2022-12-14 15:30:03,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1187 states to 1187 states and 1916 transitions. [2022-12-14 15:30:03,610 INFO L78 Accepts]: Start accepts. Automaton has 1187 states and 1916 transitions. Word has length 109 [2022-12-14 15:30:03,610 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 15:30:03,610 INFO L495 AbstractCegarLoop]: Abstraction has 1187 states and 1916 transitions. [2022-12-14 15:30:03,611 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, (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) [2022-12-14 15:30:03,611 INFO L276 IsEmpty]: Start isEmpty. Operand 1187 states and 1916 transitions. [2022-12-14 15:30:03,614 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-12-14 15:30:03,614 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 15:30:03,614 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] [2022-12-14 15:30:03,614 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-12-14 15:30:03,615 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting outgoing__wrappee__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 15:30:03,615 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 15:30:03,615 INFO L85 PathProgramCache]: Analyzing trace with hash 81241761, now seen corresponding path program 1 times [2022-12-14 15:30:03,615 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 15:30:03,615 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [29729039] [2022-12-14 15:30:03,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 15:30:03,616 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 15:30:03,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 15:30:03,679 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-12-14 15:30:03,679 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 15:30:03,679 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [29729039] [2022-12-14 15:30:03,679 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [29729039] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 15:30:03,680 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 15:30:03,680 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 15:30:03,680 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [250885587] [2022-12-14 15:30:03,680 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 15:30:03,680 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 15:30:03,680 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 15:30:03,681 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 15:30:03,681 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 15:30:03,681 INFO L87 Difference]: Start difference. First operand 1187 states and 1916 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) [2022-12-14 15:30:03,846 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 15:30:03,847 INFO L93 Difference]: Finished difference Result 2825 states and 4611 transitions. [2022-12-14 15:30:03,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 15:30:03,847 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 [2022-12-14 15:30:03,847 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 15:30:03,853 INFO L225 Difference]: With dead ends: 2825 [2022-12-14 15:30:03,853 INFO L226 Difference]: Without dead ends: 1780 [2022-12-14 15:30:03,856 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 15:30:03,856 INFO L413 NwaCegarLoop]: 269 mSDtfsCounter, 53 mSDsluCounter, 246 mSDsCounter, 0 mSdLazyCounter, 88 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 71 SdHoareTripleChecker+Valid, 515 SdHoareTripleChecker+Invalid, 89 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 88 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 15:30:03,856 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [71 Valid, 515 Invalid, 89 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 88 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 15:30:03,858 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1780 states. [2022-12-14 15:30:03,918 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1780 to 1775. [2022-12-14 15:30:03,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1775 states, 1223 states have (on average 1.5069501226492232) internal successors, (1843), 1227 states have internal predecessors, (1843), 523 states have call successors, (523), 28 states have call predecessors, (523), 28 states have return successors, (522), 521 states have call predecessors, (522), 522 states have call successors, (522) [2022-12-14 15:30:03,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1775 states to 1775 states and 2888 transitions. [2022-12-14 15:30:03,927 INFO L78 Accepts]: Start accepts. Automaton has 1775 states and 2888 transitions. Word has length 99 [2022-12-14 15:30:03,927 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 15:30:03,927 INFO L495 AbstractCegarLoop]: Abstraction has 1775 states and 2888 transitions. [2022-12-14 15:30:03,928 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) [2022-12-14 15:30:03,928 INFO L276 IsEmpty]: Start isEmpty. Operand 1775 states and 2888 transitions. [2022-12-14 15:30:03,933 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2022-12-14 15:30:03,933 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 15:30:03,934 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] [2022-12-14 15:30:03,934 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-12-14 15:30:03,934 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting outgoing__wrappee__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 15:30:03,934 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 15:30:03,934 INFO L85 PathProgramCache]: Analyzing trace with hash 467717391, now seen corresponding path program 1 times [2022-12-14 15:30:03,934 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 15:30:03,934 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [45908978] [2022-12-14 15:30:03,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 15:30:03,934 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 15:30:03,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 15:30:03,989 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-12-14 15:30:03,989 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 15:30:03,989 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [45908978] [2022-12-14 15:30:03,989 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [45908978] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 15:30:03,989 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 15:30:03,989 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 15:30:03,989 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [711010821] [2022-12-14 15:30:03,989 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 15:30:03,990 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 15:30:03,990 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 15:30:03,990 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 15:30:03,991 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 15:30:03,991 INFO L87 Difference]: Start difference. First operand 1775 states and 2888 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) [2022-12-14 15:30:04,219 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 15:30:04,219 INFO L93 Difference]: Finished difference Result 4210 states and 6919 transitions. [2022-12-14 15:30:04,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 15:30:04,220 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 [2022-12-14 15:30:04,220 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 15:30:04,229 INFO L225 Difference]: With dead ends: 4210 [2022-12-14 15:30:04,230 INFO L226 Difference]: Without dead ends: 2714 [2022-12-14 15:30:04,233 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 15:30:04,233 INFO L413 NwaCegarLoop]: 270 mSDtfsCounter, 51 mSDsluCounter, 247 mSDsCounter, 0 mSdLazyCounter, 90 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 69 SdHoareTripleChecker+Valid, 517 SdHoareTripleChecker+Invalid, 91 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 90 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 15:30:04,233 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [69 Valid, 517 Invalid, 91 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 90 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 15:30:04,236 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2714 states. [2022-12-14 15:30:04,344 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2714 to 2709. [2022-12-14 15:30:04,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2709 states, 1912 states have (on average 1.5109832635983265) internal successors, (2889), 1916 states have internal predecessors, (2889), 768 states have call successors, (768), 28 states have call predecessors, (768), 28 states have return successors, (767), 766 states have call predecessors, (767), 767 states have call successors, (767) [2022-12-14 15:30:04,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2709 states to 2709 states and 4424 transitions. [2022-12-14 15:30:04,356 INFO L78 Accepts]: Start accepts. Automaton has 2709 states and 4424 transitions. Word has length 100 [2022-12-14 15:30:04,356 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 15:30:04,356 INFO L495 AbstractCegarLoop]: Abstraction has 2709 states and 4424 transitions. [2022-12-14 15:30:04,356 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) [2022-12-14 15:30:04,356 INFO L276 IsEmpty]: Start isEmpty. Operand 2709 states and 4424 transitions. [2022-12-14 15:30:04,364 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2022-12-14 15:30:04,364 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 15:30:04,364 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] [2022-12-14 15:30:04,364 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-12-14 15:30:04,364 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting outgoing__wrappee__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 15:30:04,364 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 15:30:04,364 INFO L85 PathProgramCache]: Analyzing trace with hash 1548585533, now seen corresponding path program 1 times [2022-12-14 15:30:04,365 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 15:30:04,365 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [900695528] [2022-12-14 15:30:04,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 15:30:04,365 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 15:30:04,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 15:30:04,424 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-12-14 15:30:04,424 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 15:30:04,424 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [900695528] [2022-12-14 15:30:04,425 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [900695528] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 15:30:04,425 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 15:30:04,425 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 15:30:04,425 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1305359836] [2022-12-14 15:30:04,425 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 15:30:04,425 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 15:30:04,425 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 15:30:04,426 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 15:30:04,426 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 15:30:04,426 INFO L87 Difference]: Start difference. First operand 2709 states and 4424 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, (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) [2022-12-14 15:30:04,688 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 15:30:04,688 INFO L93 Difference]: Finished difference Result 6726 states and 11079 transitions. [2022-12-14 15:30:04,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 15:30:04,689 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, (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 112 [2022-12-14 15:30:04,689 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 15:30:04,703 INFO L225 Difference]: With dead ends: 6726 [2022-12-14 15:30:04,703 INFO L226 Difference]: Without dead ends: 4439 [2022-12-14 15:30:04,709 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 15:30:04,709 INFO L413 NwaCegarLoop]: 279 mSDtfsCounter, 49 mSDsluCounter, 254 mSDsCounter, 0 mSdLazyCounter, 87 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 67 SdHoareTripleChecker+Valid, 533 SdHoareTripleChecker+Invalid, 88 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 87 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 15:30:04,710 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [67 Valid, 533 Invalid, 88 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 87 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 15:30:04,713 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4439 states. [2022-12-14 15:30:04,912 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4439 to 4434. [2022-12-14 15:30:04,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4434 states, 3144 states have (on average 1.501908396946565) internal successors, (4722), 3148 states have internal predecessors, (4722), 1261 states have call successors, (1261), 28 states have call predecessors, (1261), 28 states have return successors, (1260), 1259 states have call predecessors, (1260), 1260 states have call successors, (1260) [2022-12-14 15:30:04,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4434 states to 4434 states and 7243 transitions. [2022-12-14 15:30:04,929 INFO L78 Accepts]: Start accepts. Automaton has 4434 states and 7243 transitions. Word has length 112 [2022-12-14 15:30:04,929 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 15:30:04,929 INFO L495 AbstractCegarLoop]: Abstraction has 4434 states and 7243 transitions. [2022-12-14 15:30:04,930 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, (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) [2022-12-14 15:30:04,930 INFO L276 IsEmpty]: Start isEmpty. Operand 4434 states and 7243 transitions. [2022-12-14 15:30:04,941 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2022-12-14 15:30:04,941 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 15:30:04,941 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] [2022-12-14 15:30:04,941 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-12-14 15:30:04,941 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting outgoing__wrappee__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 15:30:04,941 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 15:30:04,941 INFO L85 PathProgramCache]: Analyzing trace with hash 172352967, now seen corresponding path program 1 times [2022-12-14 15:30:04,941 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 15:30:04,941 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [696127179] [2022-12-14 15:30:04,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 15:30:04,942 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 15:30:04,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 15:30:05,001 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-12-14 15:30:05,001 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 15:30:05,001 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [696127179] [2022-12-14 15:30:05,001 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [696127179] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 15:30:05,001 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 15:30:05,001 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 15:30:05,001 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1619003174] [2022-12-14 15:30:05,002 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 15:30:05,002 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 15:30:05,002 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 15:30:05,002 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 15:30:05,003 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 15:30:05,003 INFO L87 Difference]: Start difference. First operand 4434 states and 7243 transitions. Second operand has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 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) [2022-12-14 15:30:05,386 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 15:30:05,386 INFO L93 Difference]: Finished difference Result 11142 states and 18364 transitions. [2022-12-14 15:30:05,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 15:30:05,387 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 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 113 [2022-12-14 15:30:05,387 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 15:30:05,447 INFO L225 Difference]: With dead ends: 11142 [2022-12-14 15:30:05,447 INFO L226 Difference]: Without dead ends: 7396 [2022-12-14 15:30:05,462 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 15:30:05,463 INFO L413 NwaCegarLoop]: 271 mSDtfsCounter, 47 mSDsluCounter, 249 mSDsCounter, 0 mSdLazyCounter, 88 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 65 SdHoareTripleChecker+Valid, 520 SdHoareTripleChecker+Invalid, 89 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 88 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 15:30:05,463 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [65 Valid, 520 Invalid, 89 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 88 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 15:30:05,473 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7396 states. [2022-12-14 15:30:05,854 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7396 to 7391. [2022-12-14 15:30:05,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7391 states, 5279 states have (on average 1.4978215571130895) internal successors, (7907), 5283 states have internal predecessors, (7907), 2083 states have call successors, (2083), 28 states have call predecessors, (2083), 28 states have return successors, (2082), 2081 states have call predecessors, (2082), 2082 states have call successors, (2082) [2022-12-14 15:30:05,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7391 states to 7391 states and 12072 transitions. [2022-12-14 15:30:05,884 INFO L78 Accepts]: Start accepts. Automaton has 7391 states and 12072 transitions. Word has length 113 [2022-12-14 15:30:05,884 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 15:30:05,884 INFO L495 AbstractCegarLoop]: Abstraction has 7391 states and 12072 transitions. [2022-12-14 15:30:05,884 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 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) [2022-12-14 15:30:05,884 INFO L276 IsEmpty]: Start isEmpty. Operand 7391 states and 12072 transitions. [2022-12-14 15:30:05,901 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2022-12-14 15:30:05,901 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 15:30:05,901 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] [2022-12-14 15:30:05,901 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-12-14 15:30:05,901 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting outgoing__wrappee__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 15:30:05,901 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 15:30:05,902 INFO L85 PathProgramCache]: Analyzing trace with hash -433343349, now seen corresponding path program 1 times [2022-12-14 15:30:05,902 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 15:30:05,902 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1180612656] [2022-12-14 15:30:05,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 15:30:05,902 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 15:30:05,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 15:30:05,967 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-12-14 15:30:05,967 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 15:30:05,968 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1180612656] [2022-12-14 15:30:05,968 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1180612656] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 15:30:05,968 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 15:30:05,968 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 15:30:05,968 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1953295120] [2022-12-14 15:30:05,968 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 15:30:05,968 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 15:30:05,968 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 15:30:05,969 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 15:30:05,969 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 15:30:05,969 INFO L87 Difference]: Start difference. First operand 7391 states and 12072 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) [2022-12-14 15:30:06,565 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 15:30:06,565 INFO L93 Difference]: Finished difference Result 18609 states and 30626 transitions. [2022-12-14 15:30:06,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 15:30:06,566 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 [2022-12-14 15:30:06,566 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 15:30:06,632 INFO L225 Difference]: With dead ends: 18609 [2022-12-14 15:30:06,632 INFO L226 Difference]: Without dead ends: 12340 [2022-12-14 15:30:06,657 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 15:30:06,658 INFO L413 NwaCegarLoop]: 269 mSDtfsCounter, 45 mSDsluCounter, 247 mSDsCounter, 0 mSdLazyCounter, 87 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 516 SdHoareTripleChecker+Invalid, 88 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 87 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 15:30:06,658 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [63 Valid, 516 Invalid, 88 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 87 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 15:30:06,675 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12340 states. [2022-12-14 15:30:07,226 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12340 to 12335. [2022-12-14 15:30:07,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12335 states, 9020 states have (on average 1.4997782705099778) internal successors, (13528), 9024 states have internal predecessors, (13528), 3286 states have call successors, (3286), 28 states have call predecessors, (3286), 28 states have return successors, (3285), 3284 states have call predecessors, (3285), 3285 states have call successors, (3285) [2022-12-14 15:30:07,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12335 states to 12335 states and 20099 transitions. [2022-12-14 15:30:07,269 INFO L78 Accepts]: Start accepts. Automaton has 12335 states and 20099 transitions. Word has length 103 [2022-12-14 15:30:07,270 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 15:30:07,270 INFO L495 AbstractCegarLoop]: Abstraction has 12335 states and 20099 transitions. [2022-12-14 15:30:07,270 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) [2022-12-14 15:30:07,270 INFO L276 IsEmpty]: Start isEmpty. Operand 12335 states and 20099 transitions. [2022-12-14 15:30:07,288 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2022-12-14 15:30:07,288 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 15:30:07,289 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] [2022-12-14 15:30:07,289 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-12-14 15:30:07,289 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting outgoing__wrappee__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 15:30:07,289 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 15:30:07,289 INFO L85 PathProgramCache]: Analyzing trace with hash -947986732, now seen corresponding path program 1 times [2022-12-14 15:30:07,289 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 15:30:07,289 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1568873844] [2022-12-14 15:30:07,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 15:30:07,289 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 15:30:07,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 15:30:07,343 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-12-14 15:30:07,343 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 15:30:07,343 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1568873844] [2022-12-14 15:30:07,343 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1568873844] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 15:30:07,343 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 15:30:07,343 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 15:30:07,343 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1713685874] [2022-12-14 15:30:07,343 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 15:30:07,344 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 15:30:07,344 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 15:30:07,344 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 15:30:07,345 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 15:30:07,345 INFO L87 Difference]: Start difference. First operand 12335 states and 20099 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) [2022-12-14 15:30:08,362 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 15:30:08,362 INFO L93 Difference]: Finished difference Result 32613 states and 53488 transitions. [2022-12-14 15:30:08,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 15:30:08,363 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 [2022-12-14 15:30:08,363 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 15:30:08,432 INFO L225 Difference]: With dead ends: 32613 [2022-12-14 15:30:08,432 INFO L226 Difference]: Without dead ends: 21852 [2022-12-14 15:30:08,461 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 15:30:08,461 INFO L413 NwaCegarLoop]: 272 mSDtfsCounter, 43 mSDsluCounter, 250 mSDsCounter, 0 mSdLazyCounter, 90 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 522 SdHoareTripleChecker+Invalid, 91 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 90 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 15:30:08,461 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [61 Valid, 522 Invalid, 91 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 90 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 15:30:08,488 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21852 states. [2022-12-14 15:30:09,455 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21852 to 21847. [2022-12-14 15:30:09,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21847 states, 16082 states have (on average 1.4924138788707872) internal successors, (24001), 16086 states have internal predecessors, (24001), 5736 states have call successors, (5736), 28 states have call predecessors, (5736), 28 states have return successors, (5735), 5734 states have call predecessors, (5735), 5735 states have call successors, (5735) [2022-12-14 15:30:09,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21847 states to 21847 states and 35472 transitions. [2022-12-14 15:30:09,525 INFO L78 Accepts]: Start accepts. Automaton has 21847 states and 35472 transitions. Word has length 104 [2022-12-14 15:30:09,525 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 15:30:09,525 INFO L495 AbstractCegarLoop]: Abstraction has 21847 states and 35472 transitions. [2022-12-14 15:30:09,526 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) [2022-12-14 15:30:09,526 INFO L276 IsEmpty]: Start isEmpty. Operand 21847 states and 35472 transitions. [2022-12-14 15:30:09,547 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2022-12-14 15:30:09,547 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 15:30:09,547 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] [2022-12-14 15:30:09,547 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-12-14 15:30:09,547 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting outgoing__wrappee__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 15:30:09,547 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 15:30:09,547 INFO L85 PathProgramCache]: Analyzing trace with hash -1284469003, now seen corresponding path program 1 times [2022-12-14 15:30:09,547 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 15:30:09,548 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1015226318] [2022-12-14 15:30:09,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 15:30:09,548 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 15:30:09,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 15:30:09,616 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-12-14 15:30:09,616 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 15:30:09,616 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1015226318] [2022-12-14 15:30:09,616 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1015226318] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 15:30:09,616 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 15:30:09,617 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 15:30:09,617 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [796818673] [2022-12-14 15:30:09,617 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 15:30:09,617 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 15:30:09,617 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 15:30:09,618 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 15:30:09,618 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 15:30:09,618 INFO L87 Difference]: Start difference. First operand 21847 states and 35472 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) [2022-12-14 15:30:11,385 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 15:30:11,385 INFO L93 Difference]: Finished difference Result 59300 states and 96740 transitions. [2022-12-14 15:30:11,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 15:30:11,386 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 [2022-12-14 15:30:11,386 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 15:30:11,483 INFO L225 Difference]: With dead ends: 59300 [2022-12-14 15:30:11,484 INFO L226 Difference]: Without dead ends: 39622 [2022-12-14 15:30:11,523 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 15:30:11,524 INFO L413 NwaCegarLoop]: 272 mSDtfsCounter, 41 mSDsluCounter, 250 mSDsCounter, 0 mSdLazyCounter, 90 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 59 SdHoareTripleChecker+Valid, 522 SdHoareTripleChecker+Invalid, 91 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 90 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 15:30:11,524 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [59 Valid, 522 Invalid, 91 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 90 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 15:30:11,557 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39622 states. [2022-12-14 15:30:13,870 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39622 to 39617. [2022-12-14 15:30:13,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39617 states, 29339 states have (on average 1.4818841814649442) internal successors, (43477), 29343 states have internal predecessors, (43477), 10249 states have call successors, (10249), 28 states have call predecessors, (10249), 28 states have return successors, (10248), 10247 states have call predecessors, (10248), 10248 states have call successors, (10248) [2022-12-14 15:30:14,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39617 states to 39617 states and 63974 transitions. [2022-12-14 15:30:14,005 INFO L78 Accepts]: Start accepts. Automaton has 39617 states and 63974 transitions. Word has length 116 [2022-12-14 15:30:14,005 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 15:30:14,005 INFO L495 AbstractCegarLoop]: Abstraction has 39617 states and 63974 transitions. [2022-12-14 15:30:14,005 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) [2022-12-14 15:30:14,005 INFO L276 IsEmpty]: Start isEmpty. Operand 39617 states and 63974 transitions. [2022-12-14 15:30:14,029 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2022-12-14 15:30:14,029 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 15:30:14,029 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] [2022-12-14 15:30:14,029 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-12-14 15:30:14,029 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting outgoing__wrappee__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 15:30:14,029 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 15:30:14,030 INFO L85 PathProgramCache]: Analyzing trace with hash -2144302252, now seen corresponding path program 1 times [2022-12-14 15:30:14,030 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 15:30:14,030 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2076218758] [2022-12-14 15:30:14,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 15:30:14,030 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 15:30:14,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 15:30:14,081 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-12-14 15:30:14,081 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 15:30:14,081 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2076218758] [2022-12-14 15:30:14,081 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2076218758] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 15:30:14,082 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 15:30:14,082 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 15:30:14,082 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [393866179] [2022-12-14 15:30:14,082 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 15:30:14,082 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 15:30:14,082 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 15:30:14,083 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 15:30:14,083 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 15:30:14,083 INFO L87 Difference]: Start difference. First operand 39617 states and 63974 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) [2022-12-14 15:30:16,709 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 15:30:16,709 INFO L93 Difference]: Finished difference Result 73198 states and 118375 transitions. [2022-12-14 15:30:16,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 15:30:16,709 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 [2022-12-14 15:30:16,709 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 15:30:16,898 INFO L225 Difference]: With dead ends: 73198 [2022-12-14 15:30:16,898 INFO L226 Difference]: Without dead ends: 73065 [2022-12-14 15:30:16,920 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 15:30:16,921 INFO L413 NwaCegarLoop]: 271 mSDtfsCounter, 39 mSDsluCounter, 249 mSDsCounter, 0 mSdLazyCounter, 88 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 57 SdHoareTripleChecker+Valid, 520 SdHoareTripleChecker+Invalid, 89 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 88 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 15:30:16,921 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [57 Valid, 520 Invalid, 89 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 88 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 15:30:16,977 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73065 states. [2022-12-14 15:30:20,990 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73065 to 73060. [2022-12-14 15:30:21,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73060 states, 54414 states have (on average 1.467986180027199) internal successors, (79879), 54418 states have internal predecessors, (79879), 18617 states have call successors, (18617), 28 states have call predecessors, (18617), 28 states have return successors, (18616), 18615 states have call predecessors, (18616), 18616 states have call successors, (18616) [2022-12-14 15:30:21,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73060 states to 73060 states and 117112 transitions. [2022-12-14 15:30:21,229 INFO L78 Accepts]: Start accepts. Automaton has 73060 states and 117112 transitions. Word has length 106 [2022-12-14 15:30:21,229 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 15:30:21,229 INFO L495 AbstractCegarLoop]: Abstraction has 73060 states and 117112 transitions. [2022-12-14 15:30:21,229 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) [2022-12-14 15:30:21,229 INFO L276 IsEmpty]: Start isEmpty. Operand 73060 states and 117112 transitions. [2022-12-14 15:30:21,254 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2022-12-14 15:30:21,254 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 15:30:21,254 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, 1, 1] [2022-12-14 15:30:21,254 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-12-14 15:30:21,254 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting outgoing__wrappee__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 15:30:21,254 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 15:30:21,255 INFO L85 PathProgramCache]: Analyzing trace with hash 1410202294, now seen corresponding path program 1 times [2022-12-14 15:30:21,255 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 15:30:21,255 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [852980225] [2022-12-14 15:30:21,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 15:30:21,255 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 15:30:21,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 15:30:21,568 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-12-14 15:30:21,568 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 15:30:21,568 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [852980225] [2022-12-14 15:30:21,568 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [852980225] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 15:30:21,568 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 15:30:21,568 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-12-14 15:30:21,568 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [334342622] [2022-12-14 15:30:21,568 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 15:30:21,569 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-12-14 15:30:21,569 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 15:30:21,569 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-12-14 15:30:21,570 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2022-12-14 15:30:21,570 INFO L87 Difference]: Start difference. First operand 73060 states and 117112 transitions. Second operand has 12 states, 10 states have (on average 6.6) internal successors, (66), 9 states have internal predecessors, (66), 6 states have call successors, (23), 4 states have call predecessors, (23), 2 states have return successors, (20), 6 states have call predecessors, (20), 6 states have call successors, (20) [2022-12-14 15:30:26,987 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 15:30:26,987 INFO L93 Difference]: Finished difference Result 104008 states and 167021 transitions. [2022-12-14 15:30:26,987 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-12-14 15:30:26,987 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 10 states have (on average 6.6) internal successors, (66), 9 states have internal predecessors, (66), 6 states have call successors, (23), 4 states have call predecessors, (23), 2 states have return successors, (20), 6 states have call predecessors, (20), 6 states have call successors, (20) Word has length 118 [2022-12-14 15:30:26,987 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 15:30:27,347 INFO L225 Difference]: With dead ends: 104008 [2022-12-14 15:30:27,347 INFO L226 Difference]: Without dead ends: 103878 [2022-12-14 15:30:27,372 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=93, Invalid=327, Unknown=0, NotChecked=0, Total=420 [2022-12-14 15:30:27,372 INFO L413 NwaCegarLoop]: 315 mSDtfsCounter, 388 mSDsluCounter, 1912 mSDsCounter, 0 mSdLazyCounter, 1328 mSolverCounterSat, 149 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 391 SdHoareTripleChecker+Valid, 2227 SdHoareTripleChecker+Invalid, 1477 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 149 IncrementalHoareTripleChecker+Valid, 1328 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-12-14 15:30:27,373 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [391 Valid, 2227 Invalid, 1477 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [149 Valid, 1328 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-12-14 15:30:27,446 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103878 states. [2022-12-14 15:30:33,117 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103878 to 102837. [2022-12-14 15:30:33,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 102837 states, 77586 states have (on average 1.4744154873301885) internal successors, (114394), 77594 states have internal predecessors, (114394), 25197 states have call successors, (25197), 54 states have call predecessors, (25197), 53 states have return successors, (25193), 25192 states have call predecessors, (25193), 25193 states have call successors, (25193) [2022-12-14 15:30:33,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102837 states to 102837 states and 164784 transitions. [2022-12-14 15:30:33,441 INFO L78 Accepts]: Start accepts. Automaton has 102837 states and 164784 transitions. Word has length 118 [2022-12-14 15:30:33,442 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 15:30:33,442 INFO L495 AbstractCegarLoop]: Abstraction has 102837 states and 164784 transitions. [2022-12-14 15:30:33,442 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 10 states have (on average 6.6) internal successors, (66), 9 states have internal predecessors, (66), 6 states have call successors, (23), 4 states have call predecessors, (23), 2 states have return successors, (20), 6 states have call predecessors, (20), 6 states have call successors, (20) [2022-12-14 15:30:33,442 INFO L276 IsEmpty]: Start isEmpty. Operand 102837 states and 164784 transitions. [2022-12-14 15:30:33,470 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2022-12-14 15:30:33,470 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 15:30:33,470 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] [2022-12-14 15:30:33,470 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-12-14 15:30:33,470 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting outgoing__wrappee__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 15:30:33,471 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 15:30:33,471 INFO L85 PathProgramCache]: Analyzing trace with hash 430982052, now seen corresponding path program 1 times [2022-12-14 15:30:33,471 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 15:30:33,471 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1954708586] [2022-12-14 15:30:33,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 15:30:33,471 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 15:30:33,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 15:30:34,155 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-12-14 15:30:34,155 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 15:30:34,155 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1954708586] [2022-12-14 15:30:34,155 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1954708586] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 15:30:34,155 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 15:30:34,156 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-12-14 15:30:34,156 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1504129484] [2022-12-14 15:30:34,156 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 15:30:34,156 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-12-14 15:30:34,156 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 15:30:34,157 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-12-14 15:30:34,157 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=332, Unknown=0, NotChecked=0, Total=380 [2022-12-14 15:30:34,157 INFO L87 Difference]: Start difference. First operand 102837 states and 164784 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) [2022-12-14 15:30:40,279 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 15:30:40,279 INFO L93 Difference]: Finished difference Result 103234 states and 165325 transitions. [2022-12-14 15:30:40,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-12-14 15:30:40,279 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 [2022-12-14 15:30:40,280 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 15:30:40,654 INFO L225 Difference]: With dead ends: 103234 [2022-12-14 15:30:40,654 INFO L226 Difference]: Without dead ends: 103230 [2022-12-14 15:30:40,690 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 183 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=170, Invalid=1090, Unknown=0, NotChecked=0, Total=1260 [2022-12-14 15:30:40,690 INFO L413 NwaCegarLoop]: 335 mSDtfsCounter, 586 mSDsluCounter, 2889 mSDsCounter, 0 mSdLazyCounter, 3507 mSolverCounterSat, 213 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 592 SdHoareTripleChecker+Valid, 3224 SdHoareTripleChecker+Invalid, 3720 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 213 IncrementalHoareTripleChecker+Valid, 3507 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-12-14 15:30:40,691 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [592 Valid, 3224 Invalid, 3720 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [213 Valid, 3507 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-12-14 15:30:40,768 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103230 states. [2022-12-14 15:30:46,485 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103230 to 103216. [2022-12-14 15:30:46,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 103216 states, 77799 states have (on average 1.4735922055553414) internal successors, (114644), 77812 states have internal predecessors, (114644), 25325 states have call successors, (25325), 91 states have call predecessors, (25325), 91 states have return successors, (25324), 25316 states have call predecessors, (25324), 25314 states have call successors, (25324) [2022-12-14 15:30:46,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103216 states to 103216 states and 165293 transitions. [2022-12-14 15:30:46,815 INFO L78 Accepts]: Start accepts. Automaton has 103216 states and 165293 transitions. Word has length 107 [2022-12-14 15:30:46,815 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 15:30:46,815 INFO L495 AbstractCegarLoop]: Abstraction has 103216 states and 165293 transitions. [2022-12-14 15:30:46,816 INFO L496 AbstractCegarLoop]: INTERPOLANT 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) [2022-12-14 15:30:46,816 INFO L276 IsEmpty]: Start isEmpty. Operand 103216 states and 165293 transitions. [2022-12-14 15:30:46,853 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2022-12-14 15:30:46,853 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 15:30:46,853 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, 1, 1, 1, 1, 1, 1] [2022-12-14 15:30:46,853 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-12-14 15:30:46,854 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting outgoing__wrappee__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 15:30:46,854 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 15:30:46,854 INFO L85 PathProgramCache]: Analyzing trace with hash -1968894507, now seen corresponding path program 1 times [2022-12-14 15:30:46,854 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 15:30:46,854 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1332067447] [2022-12-14 15:30:46,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 15:30:46,854 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 15:30:46,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 15:30:47,976 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-12-14 15:30:47,977 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 15:30:47,977 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1332067447] [2022-12-14 15:30:47,977 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1332067447] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 15:30:47,977 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1888634791] [2022-12-14 15:30:47,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 15:30:47,977 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 15:30:47,977 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_019fe4cf-56e3-4669-b02b-5fff5a81ac3c/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 15:30:47,978 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_019fe4cf-56e3-4669-b02b-5fff5a81ac3c/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 15:30:47,979 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_019fe4cf-56e3-4669-b02b-5fff5a81ac3c/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-12-14 15:30:48,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 15:30:48,140 INFO L263 TraceCheckSpWp]: Trace formula consists of 1239 conjuncts, 34 conjunts are in the unsatisfiable core [2022-12-14 15:30:48,147 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 15:30:48,802 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-12-14 15:30:48,802 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 15:30:48,803 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1888634791] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 15:30:48,803 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-14 15:30:48,803 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [26] total 38 [2022-12-14 15:30:48,803 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [52025155] [2022-12-14 15:30:48,803 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 15:30:48,804 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-12-14 15:30:48,804 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 15:30:48,804 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-12-14 15:30:48,805 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=1322, Unknown=0, NotChecked=0, Total=1406 [2022-12-14 15:30:48,805 INFO L87 Difference]: Start difference. First operand 103216 states and 165293 transitions. Second operand has 14 states, 13 states have (on average 5.230769230769231) internal successors, (68), 9 states have internal predecessors, (68), 6 states have call successors, (22), 6 states have call predecessors, (22), 4 states have return successors, (19), 7 states have call predecessors, (19), 6 states have call successors, (19) [2022-12-14 15:30:55,345 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 15:30:55,345 INFO L93 Difference]: Finished difference Result 108269 states and 173162 transitions. [2022-12-14 15:30:55,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-12-14 15:30:55,346 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 5.230769230769231) internal successors, (68), 9 states have internal predecessors, (68), 6 states have call successors, (22), 6 states have call predecessors, (22), 4 states have return successors, (19), 7 states have call predecessors, (19), 6 states have call successors, (19) Word has length 113 [2022-12-14 15:30:55,346 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 15:30:55,634 INFO L225 Difference]: With dead ends: 108269 [2022-12-14 15:30:55,634 INFO L226 Difference]: Without dead ends: 108011 [2022-12-14 15:30:55,658 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 103 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 137 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=158, Invalid=2194, Unknown=0, NotChecked=0, Total=2352 [2022-12-14 15:30:55,659 INFO L413 NwaCegarLoop]: 393 mSDtfsCounter, 581 mSDsluCounter, 2776 mSDsCounter, 0 mSdLazyCounter, 2343 mSolverCounterSat, 197 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 609 SdHoareTripleChecker+Valid, 3169 SdHoareTripleChecker+Invalid, 2540 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 197 IncrementalHoareTripleChecker+Valid, 2343 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-12-14 15:30:55,659 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [609 Valid, 3169 Invalid, 2540 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [197 Valid, 2343 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-12-14 15:30:55,731 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108011 states. [2022-12-14 15:31:01,431 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108011 to 107506. [2022-12-14 15:31:01,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 107506 states, 80734 states have (on average 1.4709911561423936) internal successors, (118759), 81233 states have internal predecessors, (118759), 26592 states have call successors, (26592), 180 states have call predecessors, (26592), 179 states have return successors, (26589), 26101 states have call predecessors, (26589), 26569 states have call successors, (26589) [2022-12-14 15:31:01,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107506 states to 107506 states and 171940 transitions. [2022-12-14 15:31:01,794 INFO L78 Accepts]: Start accepts. Automaton has 107506 states and 171940 transitions. Word has length 113 [2022-12-14 15:31:01,794 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 15:31:01,795 INFO L495 AbstractCegarLoop]: Abstraction has 107506 states and 171940 transitions. [2022-12-14 15:31:01,795 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 5.230769230769231) internal successors, (68), 9 states have internal predecessors, (68), 6 states have call successors, (22), 6 states have call predecessors, (22), 4 states have return successors, (19), 7 states have call predecessors, (19), 6 states have call successors, (19) [2022-12-14 15:31:01,795 INFO L276 IsEmpty]: Start isEmpty. Operand 107506 states and 171940 transitions. [2022-12-14 15:31:01,841 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2022-12-14 15:31:01,841 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 15:31:01,841 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 3, 3, 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] [2022-12-14 15:31:01,847 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_019fe4cf-56e3-4669-b02b-5fff5a81ac3c/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-12-14 15:31:02,042 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_019fe4cf-56e3-4669-b02b-5fff5a81ac3c/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2022-12-14 15:31:02,043 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting outgoing__wrappee__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 15:31:02,044 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 15:31:02,044 INFO L85 PathProgramCache]: Analyzing trace with hash -560721789, now seen corresponding path program 1 times [2022-12-14 15:31:02,044 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 15:31:02,045 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [37340994] [2022-12-14 15:31:02,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 15:31:02,045 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 15:31:02,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 15:31:02,210 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 26 proven. 3 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-12-14 15:31:02,210 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 15:31:02,210 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [37340994] [2022-12-14 15:31:02,210 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [37340994] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 15:31:02,210 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [65999460] [2022-12-14 15:31:02,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 15:31:02,211 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 15:31:02,211 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_019fe4cf-56e3-4669-b02b-5fff5a81ac3c/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 15:31:02,212 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_019fe4cf-56e3-4669-b02b-5fff5a81ac3c/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 15:31:02,212 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_019fe4cf-56e3-4669-b02b-5fff5a81ac3c/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-12-14 15:31:02,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 15:31:02,404 INFO L263 TraceCheckSpWp]: Trace formula consists of 1348 conjuncts, 2 conjunts are in the unsatisfiable core [2022-12-14 15:31:02,408 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 15:31:02,418 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-12-14 15:31:02,418 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 15:31:02,418 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [65999460] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 15:31:02,418 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-14 15:31:02,419 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2022-12-14 15:31:02,419 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1444508147] [2022-12-14 15:31:02,419 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 15:31:02,419 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 15:31:02,419 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 15:31:02,419 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 15:31:02,419 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-12-14 15:31:02,419 INFO L87 Difference]: Start difference. First operand 107506 states and 171940 transitions. Second operand has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 2 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) [2022-12-14 15:31:07,992 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 15:31:07,992 INFO L93 Difference]: Finished difference Result 210844 states and 337698 transitions. [2022-12-14 15:31:07,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 15:31:07,992 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 2 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) Word has length 121 [2022-12-14 15:31:07,993 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 15:31:08,297 INFO L225 Difference]: With dead ends: 210844 [2022-12-14 15:31:08,297 INFO L226 Difference]: Without dead ends: 107512 [2022-12-14 15:31:08,436 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 122 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-12-14 15:31:08,437 INFO L413 NwaCegarLoop]: 333 mSDtfsCounter, 57 mSDsluCounter, 270 mSDsCounter, 0 mSdLazyCounter, 94 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 75 SdHoareTripleChecker+Valid, 603 SdHoareTripleChecker+Invalid, 94 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 94 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 15:31:08,437 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [75 Valid, 603 Invalid, 94 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 94 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 15:31:08,515 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107512 states. [2022-12-14 15:31:15,140 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107512 to 107480. [2022-12-14 15:31:15,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 107480 states, 80712 states have (on average 1.4521508573694122) internal successors, (117206), 81209 states have internal predecessors, (117206), 26588 states have call successors, (26588), 180 states have call predecessors, (26588), 179 states have return successors, (26585), 26099 states have call predecessors, (26585), 26565 states have call successors, (26585) [2022-12-14 15:31:15,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107480 states to 107480 states and 170379 transitions. [2022-12-14 15:31:15,459 INFO L78 Accepts]: Start accepts. Automaton has 107480 states and 170379 transitions. Word has length 121 [2022-12-14 15:31:15,459 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 15:31:15,459 INFO L495 AbstractCegarLoop]: Abstraction has 107480 states and 170379 transitions. [2022-12-14 15:31:15,459 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 2 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) [2022-12-14 15:31:15,459 INFO L276 IsEmpty]: Start isEmpty. Operand 107480 states and 170379 transitions. [2022-12-14 15:31:15,521 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2022-12-14 15:31:15,521 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 15:31:15,521 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 15:31:15,527 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_019fe4cf-56e3-4669-b02b-5fff5a81ac3c/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-12-14 15:31:15,722 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_019fe4cf-56e3-4669-b02b-5fff5a81ac3c/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2022-12-14 15:31:15,723 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting outgoing__wrappee__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 15:31:15,723 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 15:31:15,724 INFO L85 PathProgramCache]: Analyzing trace with hash 116197189, now seen corresponding path program 1 times [2022-12-14 15:31:15,724 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 15:31:15,724 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1456309485] [2022-12-14 15:31:15,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 15:31:15,725 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 15:31:15,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 15:31:16,915 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-12-14 15:31:16,915 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 15:31:16,915 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1456309485] [2022-12-14 15:31:16,915 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1456309485] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 15:31:16,915 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [223476602] [2022-12-14 15:31:16,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 15:31:16,915 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 15:31:16,915 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_019fe4cf-56e3-4669-b02b-5fff5a81ac3c/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 15:31:16,916 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_019fe4cf-56e3-4669-b02b-5fff5a81ac3c/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 15:31:16,917 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_019fe4cf-56e3-4669-b02b-5fff5a81ac3c/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-12-14 15:31:17,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 15:31:17,122 INFO L263 TraceCheckSpWp]: Trace formula consists of 1389 conjuncts, 196 conjunts are in the unsatisfiable core [2022-12-14 15:31:17,132 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 15:31:19,412 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 8 proven. 12 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-14 15:31:19,413 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 15:31:37,055 WARN L233 SmtUtils]: Spent 16.05s on a formula simplification. DAG size of input: 1080 DAG size of output: 67 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-12-14 15:32:12,338 WARN L176 XnfTransformerHelper]: Simplifying conjuction of 10753 disjunctions. This might take some time... [2022-12-14 15:32:18,786 INFO L192 XnfTransformerHelper]: Simplified to conjuction of 10753 disjunctions.