./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/email_spec6_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_b6473b25-ea49-4599-8517-4cbddf34f1ba/bin/utaipan-gh47qXpMRh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6473b25-ea49-4599-8517-4cbddf34f1ba/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_b6473b25-ea49-4599-8517-4cbddf34f1ba/bin/utaipan-gh47qXpMRh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6473b25-ea49-4599-8517-4cbddf34f1ba/bin/utaipan-gh47qXpMRh/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/email_spec6_product34.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6473b25-ea49-4599-8517-4cbddf34f1ba/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_b6473b25-ea49-4599-8517-4cbddf34f1ba/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 4c8df6e468eecbce541189806946dc0233fe629a6f2a971a54d2c5d7914e97b3 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-2329fc7 [2022-12-14 13:38:27,693 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-14 13:38:27,694 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-14 13:38:27,712 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-14 13:38:27,712 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-14 13:38:27,713 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-14 13:38:27,714 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-14 13:38:27,716 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-14 13:38:27,717 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-14 13:38:27,718 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-14 13:38:27,719 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-14 13:38:27,720 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-14 13:38:27,720 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-14 13:38:27,721 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-14 13:38:27,722 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-14 13:38:27,723 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-14 13:38:27,724 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-14 13:38:27,725 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-14 13:38:27,726 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-14 13:38:27,727 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-14 13:38:27,729 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-14 13:38:27,730 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-14 13:38:27,731 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-14 13:38:27,732 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-14 13:38:27,735 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-14 13:38:27,735 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-14 13:38:27,735 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-14 13:38:27,736 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-14 13:38:27,737 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-14 13:38:27,737 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-14 13:38:27,738 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-14 13:38:27,738 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-14 13:38:27,739 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-14 13:38:27,740 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-14 13:38:27,741 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-14 13:38:27,741 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-14 13:38:27,741 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-14 13:38:27,742 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-14 13:38:27,742 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-14 13:38:27,742 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-14 13:38:27,743 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-14 13:38:27,744 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6473b25-ea49-4599-8517-4cbddf34f1ba/bin/utaipan-gh47qXpMRh/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-12-14 13:38:27,763 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-14 13:38:27,763 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-14 13:38:27,763 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-14 13:38:27,764 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-14 13:38:27,764 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-14 13:38:27,764 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-14 13:38:27,764 INFO L138 SettingsManager]: * User list type=DISABLED [2022-12-14 13:38:27,765 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-12-14 13:38:27,765 INFO L138 SettingsManager]: * Explicit value domain=true [2022-12-14 13:38:27,765 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-12-14 13:38:27,765 INFO L138 SettingsManager]: * Octagon Domain=false [2022-12-14 13:38:27,765 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-12-14 13:38:27,765 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-12-14 13:38:27,766 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-12-14 13:38:27,766 INFO L138 SettingsManager]: * Interval Domain=false [2022-12-14 13:38:27,766 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-12-14 13:38:27,766 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-12-14 13:38:27,766 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-12-14 13:38:27,767 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-14 13:38:27,767 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-14 13:38:27,767 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-14 13:38:27,767 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-14 13:38:27,768 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-14 13:38:27,768 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-14 13:38:27,768 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-14 13:38:27,768 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-14 13:38:27,768 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-14 13:38:27,768 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-14 13:38:27,768 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-14 13:38:27,769 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-14 13:38:27,769 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-14 13:38:27,769 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-14 13:38:27,769 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 13:38:27,769 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-14 13:38:27,769 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-12-14 13:38:27,770 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-14 13:38:27,770 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-14 13:38:27,770 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-12-14 13:38:27,770 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-14 13:38:27,770 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-14 13:38:27,770 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-12-14 13:38:27,770 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_b6473b25-ea49-4599-8517-4cbddf34f1ba/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6473b25-ea49-4599-8517-4cbddf34f1ba/bin/utaipan-gh47qXpMRh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4c8df6e468eecbce541189806946dc0233fe629a6f2a971a54d2c5d7914e97b3 [2022-12-14 13:38:27,975 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-14 13:38:27,991 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-14 13:38:27,992 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-14 13:38:27,993 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-14 13:38:27,994 INFO L275 PluginConnector]: CDTParser initialized [2022-12-14 13:38:27,994 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6473b25-ea49-4599-8517-4cbddf34f1ba/bin/utaipan-gh47qXpMRh/../../sv-benchmarks/c/product-lines/email_spec6_product34.cil.c [2022-12-14 13:38:30,549 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-14 13:38:30,771 INFO L351 CDTParser]: Found 1 translation units. [2022-12-14 13:38:30,771 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6473b25-ea49-4599-8517-4cbddf34f1ba/sv-benchmarks/c/product-lines/email_spec6_product34.cil.c [2022-12-14 13:38:30,790 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6473b25-ea49-4599-8517-4cbddf34f1ba/bin/utaipan-gh47qXpMRh/data/de22b3a3d/d2550a407a2f4a79b4872dee2adb0920/FLAGd1a8230de [2022-12-14 13:38:31,101 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6473b25-ea49-4599-8517-4cbddf34f1ba/bin/utaipan-gh47qXpMRh/data/de22b3a3d/d2550a407a2f4a79b4872dee2adb0920 [2022-12-14 13:38:31,103 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-14 13:38:31,105 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-14 13:38:31,106 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-14 13:38:31,106 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-14 13:38:31,109 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-14 13:38:31,110 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 01:38:31" (1/1) ... [2022-12-14 13:38:31,111 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3c2ae24d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:38:31, skipping insertion in model container [2022-12-14 13:38:31,111 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 01:38:31" (1/1) ... [2022-12-14 13:38:31,117 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-14 13:38:31,169 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-14 13:38:31,327 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 13:38:31,332 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 13:38:31,389 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 13:38:31,396 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 13:38:31,396 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 13:38:31,398 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 13:38:31,410 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 13:38:31,415 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_b6473b25-ea49-4599-8517-4cbddf34f1ba/sv-benchmarks/c/product-lines/email_spec6_product34.cil.c[11485,11498] [2022-12-14 13:38:31,565 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 13:38:31,567 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 13:38:31,569 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 13:38:31,576 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 13:38:31,588 INFO L203 MainTranslator]: Completed pre-run [2022-12-14 13:38:31,598 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 13:38:31,599 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 13:38:31,603 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 13:38:31,605 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 13:38:31,606 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 13:38:31,607 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 13:38:31,613 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 13:38:31,616 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_b6473b25-ea49-4599-8517-4cbddf34f1ba/sv-benchmarks/c/product-lines/email_spec6_product34.cil.c[11485,11498] [2022-12-14 13:38:31,675 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 13:38:31,676 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 13:38:31,679 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 13:38:31,687 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 13:38:31,718 INFO L208 MainTranslator]: Completed translation [2022-12-14 13:38:31,719 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:38:31 WrapperNode [2022-12-14 13:38:31,719 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-14 13:38:31,720 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-14 13:38:31,720 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-14 13:38:31,720 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-14 13:38:31,727 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:38:31" (1/1) ... [2022-12-14 13:38:31,746 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:38:31" (1/1) ... [2022-12-14 13:38:31,801 INFO L138 Inliner]: procedures = 135, calls = 244, calls flagged for inlining = 63, calls inlined = 60, statements flattened = 1123 [2022-12-14 13:38:31,802 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-14 13:38:31,802 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-14 13:38:31,802 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-14 13:38:31,803 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-14 13:38:31,809 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:38:31" (1/1) ... [2022-12-14 13:38:31,810 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:38:31" (1/1) ... [2022-12-14 13:38:31,815 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:38:31" (1/1) ... [2022-12-14 13:38:31,815 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:38:31" (1/1) ... [2022-12-14 13:38:31,828 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:38:31" (1/1) ... [2022-12-14 13:38:31,834 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:38:31" (1/1) ... [2022-12-14 13:38:31,837 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:38:31" (1/1) ... [2022-12-14 13:38:31,841 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:38:31" (1/1) ... [2022-12-14 13:38:31,846 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-14 13:38:31,847 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-14 13:38:31,847 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-14 13:38:31,847 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-14 13:38:31,848 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:38:31" (1/1) ... [2022-12-14 13:38:31,853 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 13:38:31,865 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6473b25-ea49-4599-8517-4cbddf34f1ba/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 13:38:31,877 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6473b25-ea49-4599-8517-4cbddf34f1ba/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-14 13:38:31,880 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6473b25-ea49-4599-8517-4cbddf34f1ba/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-14 13:38:31,913 INFO L130 BoogieDeclarations]: Found specification of procedure getClientPrivateKey [2022-12-14 13:38:31,913 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientPrivateKey [2022-12-14 13:38:31,913 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookSize [2022-12-14 13:38:31,913 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookSize [2022-12-14 13:38:31,913 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailEncryptionKey [2022-12-14 13:38:31,913 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailEncryptionKey [2022-12-14 13:38:31,914 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookAddress [2022-12-14 13:38:31,914 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookAddress [2022-12-14 13:38:31,914 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailEncryptionKey [2022-12-14 13:38:31,914 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailEncryptionKey [2022-12-14 13:38:31,914 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2022-12-14 13:38:31,914 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2022-12-14 13:38:31,914 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2022-12-14 13:38:31,915 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2022-12-14 13:38:31,915 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable [2022-12-14 13:38:31,915 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable [2022-12-14 13:38:31,915 INFO L130 BoogieDeclarations]: Found specification of procedure createClientKeyringEntry [2022-12-14 13:38:31,915 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientKeyringEntry [2022-12-14 13:38:31,915 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsEncrypted [2022-12-14 13:38:31,915 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsEncrypted [2022-12-14 13:38:31,915 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSignKey [2022-12-14 13:38:31,916 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSignKey [2022-12-14 13:38:31,916 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAdd [2022-12-14 13:38:31,916 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAdd [2022-12-14 13:38:31,916 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2022-12-14 13:38:31,916 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailFrom [2022-12-14 13:38:31,916 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailFrom [2022-12-14 13:38:31,916 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2022-12-14 13:38:31,916 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2022-12-14 13:38:31,917 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-14 13:38:31,917 INFO L130 BoogieDeclarations]: Found specification of procedure isSigned [2022-12-14 13:38:31,917 INFO L138 BoogieDeclarations]: Found implementation of procedure isSigned [2022-12-14 13:38:31,917 INFO L130 BoogieDeclarations]: Found specification of procedure isKeyPairValid [2022-12-14 13:38:31,917 INFO L138 BoogieDeclarations]: Found implementation of procedure isKeyPairValid [2022-12-14 13:38:31,917 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookSize [2022-12-14 13:38:31,917 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookSize [2022-12-14 13:38:31,917 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringUser [2022-12-14 13:38:31,918 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringUser [2022-12-14 13:38:31,918 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringPublicKey [2022-12-14 13:38:31,918 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringPublicKey [2022-12-14 13:38:31,918 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2022-12-14 13:38:31,918 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2022-12-14 13:38:31,918 INFO L130 BoogieDeclarations]: Found specification of procedure findPublicKey [2022-12-14 13:38:31,918 INFO L138 BoogieDeclarations]: Found implementation of procedure findPublicKey [2022-12-14 13:38:31,918 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing__wrappee__Encrypt [2022-12-14 13:38:31,919 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing__wrappee__Encrypt [2022-12-14 13:38:31,919 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2022-12-14 13:38:31,919 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2022-12-14 13:38:31,919 INFO L130 BoogieDeclarations]: Found specification of procedure isEncrypted [2022-12-14 13:38:31,919 INFO L138 BoogieDeclarations]: Found implementation of procedure isEncrypted [2022-12-14 13:38:31,919 INFO L130 BoogieDeclarations]: Found specification of procedure setClientPrivateKey [2022-12-14 13:38:31,919 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientPrivateKey [2022-12-14 13:38:31,919 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailTo [2022-12-14 13:38:31,920 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailTo [2022-12-14 13:38:31,920 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-14 13:38:31,920 INFO L130 BoogieDeclarations]: Found specification of procedure generateKeyPair [2022-12-14 13:38:31,920 INFO L138 BoogieDeclarations]: Found implementation of procedure generateKeyPair [2022-12-14 13:38:31,920 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookAddress [2022-12-14 13:38:31,920 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookAddress [2022-12-14 13:38:31,920 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-14 13:38:31,920 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-14 13:38:32,099 INFO L235 CfgBuilder]: Building ICFG [2022-12-14 13:38:32,101 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-14 13:38:32,696 INFO L276 CfgBuilder]: Performing block encoding [2022-12-14 13:38:33,071 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-14 13:38:33,071 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-12-14 13:38:33,073 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 01:38:33 BoogieIcfgContainer [2022-12-14 13:38:33,073 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-14 13:38:33,075 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-14 13:38:33,075 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-14 13:38:33,077 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-14 13:38:33,078 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.12 01:38:31" (1/3) ... [2022-12-14 13:38:33,078 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@305ef69 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 01:38:33, skipping insertion in model container [2022-12-14 13:38:33,078 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:38:31" (2/3) ... [2022-12-14 13:38:33,078 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@305ef69 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 01:38:33, skipping insertion in model container [2022-12-14 13:38:33,078 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 01:38:33" (3/3) ... [2022-12-14 13:38:33,079 INFO L112 eAbstractionObserver]: Analyzing ICFG email_spec6_product34.cil.c [2022-12-14 13:38:33,094 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-14 13:38:33,095 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-12-14 13:38:33,139 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-14 13:38:33,144 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;@34d800bd, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-14 13:38:33,144 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-12-14 13:38:33,149 INFO L276 IsEmpty]: Start isEmpty. Operand has 235 states, 132 states have (on average 1.2878787878787878) internal successors, (170), 137 states have internal predecessors, (170), 73 states have call successors, (73), 28 states have call predecessors, (73), 28 states have return successors, (73), 72 states have call predecessors, (73), 73 states have call successors, (73) [2022-12-14 13:38:33,162 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2022-12-14 13:38:33,162 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 13:38:33,163 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] [2022-12-14 13:38:33,164 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting outgoing__wrappee__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 13:38:33,169 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 13:38:33,169 INFO L85 PathProgramCache]: Analyzing trace with hash 1390137322, now seen corresponding path program 1 times [2022-12-14 13:38:33,176 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 13:38:33,176 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [619904041] [2022-12-14 13:38:33,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 13:38:33,176 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 13:38:33,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 13:38:33,409 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 13:38:33,410 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 13:38:33,410 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [619904041] [2022-12-14 13:38:33,410 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [619904041] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 13:38:33,410 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 13:38:33,410 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-14 13:38:33,411 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1293583309] [2022-12-14 13:38:33,412 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 13:38:33,415 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-12-14 13:38:33,415 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 13:38:33,435 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-12-14 13:38:33,436 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-12-14 13:38:33,438 INFO L87 Difference]: Start difference. First operand has 235 states, 132 states have (on average 1.2878787878787878) internal successors, (170), 137 states have internal predecessors, (170), 73 states have call successors, (73), 28 states have call predecessors, (73), 28 states have return successors, (73), 72 states have call predecessors, (73), 73 states have call successors, (73) Second operand has 2 states, 2 states have (on average 20.5) internal successors, (41), 2 states have internal predecessors, (41), 2 states have call successors, (21), 2 states have call predecessors, (21), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2022-12-14 13:38:33,583 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 13:38:33,583 INFO L93 Difference]: Finished difference Result 378 states and 503 transitions. [2022-12-14 13:38:33,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-12-14 13:38:33,585 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 20.5) internal successors, (41), 2 states have internal predecessors, (41), 2 states have call successors, (21), 2 states have call predecessors, (21), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 87 [2022-12-14 13:38:33,586 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 13:38:33,594 INFO L225 Difference]: With dead ends: 378 [2022-12-14 13:38:33,594 INFO L226 Difference]: Without dead ends: 232 [2022-12-14 13:38:33,597 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-12-14 13:38:33,600 INFO L413 NwaCegarLoop]: 268 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 268 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 13:38:33,601 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 268 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 13:38:33,613 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 232 states. [2022-12-14 13:38:33,639 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 232 to 232. [2022-12-14 13:38:33,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 232 states, 130 states have (on average 1.2615384615384615) internal successors, (164), 134 states have internal predecessors, (164), 73 states have call successors, (73), 28 states have call predecessors, (73), 28 states have return successors, (72), 71 states have call predecessors, (72), 72 states have call successors, (72) [2022-12-14 13:38:33,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 232 states to 232 states and 309 transitions. [2022-12-14 13:38:33,644 INFO L78 Accepts]: Start accepts. Automaton has 232 states and 309 transitions. Word has length 87 [2022-12-14 13:38:33,645 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 13:38:33,645 INFO L495 AbstractCegarLoop]: Abstraction has 232 states and 309 transitions. [2022-12-14 13:38:33,646 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 20.5) internal successors, (41), 2 states have internal predecessors, (41), 2 states have call successors, (21), 2 states have call predecessors, (21), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2022-12-14 13:38:33,646 INFO L276 IsEmpty]: Start isEmpty. Operand 232 states and 309 transitions. [2022-12-14 13:38:33,648 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-12-14 13:38:33,649 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 13:38:33,649 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] [2022-12-14 13:38:33,649 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-14 13:38:33,649 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting outgoing__wrappee__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 13:38:33,650 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 13:38:33,650 INFO L85 PathProgramCache]: Analyzing trace with hash 1662442527, now seen corresponding path program 1 times [2022-12-14 13:38:33,650 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 13:38:33,650 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [509987510] [2022-12-14 13:38:33,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 13:38:33,651 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 13:38:33,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 13:38:33,816 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 13:38:33,817 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 13:38:33,817 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [509987510] [2022-12-14 13:38:33,817 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [509987510] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 13:38:33,817 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 13:38:33,817 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 13:38:33,818 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1754047501] [2022-12-14 13:38:33,818 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 13:38:33,819 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 13:38:33,819 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 13:38:33,820 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 13:38:33,820 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 13:38:33,820 INFO L87 Difference]: Start difference. First operand 232 states and 309 transitions. Second operand has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 2 states have call successors, (24), 2 states have call predecessors, (24), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2022-12-14 13:38:33,934 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 13:38:33,934 INFO L93 Difference]: Finished difference Result 374 states and 488 transitions. [2022-12-14 13:38:33,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 13:38:33,934 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 2 states have call successors, (24), 2 states have call predecessors, (24), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) Word has length 99 [2022-12-14 13:38:33,935 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 13:38:33,936 INFO L225 Difference]: With dead ends: 374 [2022-12-14 13:38:33,936 INFO L226 Difference]: Without dead ends: 234 [2022-12-14 13:38:33,937 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 13:38:33,938 INFO L413 NwaCegarLoop]: 265 mSDtfsCounter, 0 mSDsluCounter, 264 mSDsCounter, 0 mSdLazyCounter, 88 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 529 SdHoareTripleChecker+Invalid, 88 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 88 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 13:38:33,938 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 529 Invalid, 88 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 88 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 13:38:33,939 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 234 states. [2022-12-14 13:38:33,950 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 234 to 234. [2022-12-14 13:38:33,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 234 states, 132 states have (on average 1.2575757575757576) internal successors, (166), 136 states have internal predecessors, (166), 73 states have call successors, (73), 28 states have call predecessors, (73), 28 states have return successors, (72), 71 states have call predecessors, (72), 72 states have call successors, (72) [2022-12-14 13:38:33,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 234 states to 234 states and 311 transitions. [2022-12-14 13:38:33,952 INFO L78 Accepts]: Start accepts. Automaton has 234 states and 311 transitions. Word has length 99 [2022-12-14 13:38:33,952 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 13:38:33,952 INFO L495 AbstractCegarLoop]: Abstraction has 234 states and 311 transitions. [2022-12-14 13:38:33,952 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 2 states have call successors, (24), 2 states have call predecessors, (24), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2022-12-14 13:38:33,952 INFO L276 IsEmpty]: Start isEmpty. Operand 234 states and 311 transitions. [2022-12-14 13:38:33,954 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2022-12-14 13:38:33,954 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 13:38:33,954 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 13:38:33,955 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-14 13:38:33,955 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting outgoing__wrappee__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 13:38:33,955 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 13:38:33,955 INFO L85 PathProgramCache]: Analyzing trace with hash 917156510, now seen corresponding path program 1 times [2022-12-14 13:38:33,955 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 13:38:33,955 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [282071030] [2022-12-14 13:38:33,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 13:38:33,955 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 13:38:33,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 13:38:34,047 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-12-14 13:38:34,047 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 13:38:34,048 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [282071030] [2022-12-14 13:38:34,048 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [282071030] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 13:38:34,048 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 13:38:34,048 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 13:38:34,048 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [374935213] [2022-12-14 13:38:34,048 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 13:38:34,049 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 13:38:34,049 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 13:38:34,050 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 13:38:34,050 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 13:38:34,050 INFO L87 Difference]: Start difference. First operand 234 states and 311 transitions. Second operand has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 2 states have call successors, (24), 2 states have call predecessors, (24), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2022-12-14 13:38:34,159 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 13:38:34,160 INFO L93 Difference]: Finished difference Result 503 states and 689 transitions. [2022-12-14 13:38:34,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 13:38:34,160 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 2 states have call successors, (24), 2 states have call predecessors, (24), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) Word has length 104 [2022-12-14 13:38:34,161 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 13:38:34,162 INFO L225 Difference]: With dead ends: 503 [2022-12-14 13:38:34,163 INFO L226 Difference]: Without dead ends: 287 [2022-12-14 13:38:34,163 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 13:38:34,164 INFO L413 NwaCegarLoop]: 284 mSDtfsCounter, 59 mSDsluCounter, 259 mSDsCounter, 0 mSdLazyCounter, 91 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 77 SdHoareTripleChecker+Valid, 543 SdHoareTripleChecker+Invalid, 92 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 91 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 13:38:34,164 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [77 Valid, 543 Invalid, 92 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 91 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 13:38:34,165 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 287 states. [2022-12-14 13:38:34,178 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 287 to 282. [2022-12-14 13:38:34,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 282 states, 166 states have (on average 1.3313253012048192) internal successors, (221), 170 states have internal predecessors, (221), 87 states have call successors, (87), 28 states have call predecessors, (87), 28 states have return successors, (86), 85 states have call predecessors, (86), 86 states have call successors, (86) [2022-12-14 13:38:34,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 282 states to 282 states and 394 transitions. [2022-12-14 13:38:34,180 INFO L78 Accepts]: Start accepts. Automaton has 282 states and 394 transitions. Word has length 104 [2022-12-14 13:38:34,180 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 13:38:34,180 INFO L495 AbstractCegarLoop]: Abstraction has 282 states and 394 transitions. [2022-12-14 13:38:34,180 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 2 states have call successors, (24), 2 states have call predecessors, (24), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2022-12-14 13:38:34,180 INFO L276 IsEmpty]: Start isEmpty. Operand 282 states and 394 transitions. [2022-12-14 13:38:34,182 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2022-12-14 13:38:34,182 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 13:38:34,182 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, 1, 1, 1] [2022-12-14 13:38:34,182 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-12-14 13:38:34,182 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting outgoing__wrappee__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 13:38:34,182 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 13:38:34,182 INFO L85 PathProgramCache]: Analyzing trace with hash -1487988732, now seen corresponding path program 1 times [2022-12-14 13:38:34,182 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 13:38:34,183 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2102354188] [2022-12-14 13:38:34,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 13:38:34,183 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 13:38:34,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 13:38:34,288 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 13:38:34,288 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 13:38:34,288 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2102354188] [2022-12-14 13:38:34,288 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2102354188] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 13:38:34,289 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1714036540] [2022-12-14 13:38:34,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 13:38:34,289 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 13:38:34,289 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6473b25-ea49-4599-8517-4cbddf34f1ba/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 13:38:34,290 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6473b25-ea49-4599-8517-4cbddf34f1ba/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 13:38:34,291 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6473b25-ea49-4599-8517-4cbddf34f1ba/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-12-14 13:38:34,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 13:38:34,526 INFO L263 TraceCheckSpWp]: Trace formula consists of 1192 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-14 13:38:34,532 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 13:38:34,579 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 13:38:34,579 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 13:38:34,646 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 13:38:34,647 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1714036540] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 13:38:34,647 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1510104423] [2022-12-14 13:38:34,666 INFO L159 IcfgInterpreter]: Started Sifa with 79 locations of interest [2022-12-14 13:38:34,666 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 13:38:34,669 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 13:38:34,675 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 13:38:34,675 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 13:38:59,895 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 443 for LOIs [2022-12-14 13:39:00,218 INFO L197 IcfgInterpreter]: Interpreting procedure setClientPrivateKey with input of size 445 for LOIs [2022-12-14 13:39:00,549 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 13:39:39,894 WARN L233 SmtUtils]: Spent 8.60s on a formula simplification. DAG size of input: 577 DAG size of output: 388 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 13:39:47,156 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [1510104423] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 13:39:47,157 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-12-14 13:39:47,157 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [4, 4, 4] total 26 [2022-12-14 13:39:47,157 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [665680382] [2022-12-14 13:39:47,157 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 13:39:47,158 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-12-14 13:39:47,158 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 13:39:47,158 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-12-14 13:39:47,158 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=567, Unknown=0, NotChecked=0, Total=650 [2022-12-14 13:39:47,159 INFO L87 Difference]: Start difference. First operand 282 states and 394 transitions. Second operand has 21 states, 16 states have (on average 2.9375) internal successors, (47), 15 states have internal predecessors, (47), 7 states have call successors, (21), 3 states have call predecessors, (21), 3 states have return successors, (18), 7 states have call predecessors, (18), 7 states have call successors, (18) [2022-12-14 13:39:53,739 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 13:39:53,739 INFO L93 Difference]: Finished difference Result 611 states and 888 transitions. [2022-12-14 13:39:53,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-12-14 13:39:53,740 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 16 states have (on average 2.9375) internal successors, (47), 15 states have internal predecessors, (47), 7 states have call successors, (21), 3 states have call predecessors, (21), 3 states have return successors, (18), 7 states have call predecessors, (18), 7 states have call successors, (18) Word has length 94 [2022-12-14 13:39:53,740 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 13:39:53,743 INFO L225 Difference]: With dead ends: 611 [2022-12-14 13:39:53,743 INFO L226 Difference]: Without dead ends: 347 [2022-12-14 13:39:53,744 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 284 GetRequests, 258 SyntacticMatches, 2 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 161 ImplicationChecksByTransitivity, 46.6s TimeCoverageRelationStatistics Valid=83, Invalid=567, Unknown=0, NotChecked=0, Total=650 [2022-12-14 13:39:53,745 INFO L413 NwaCegarLoop]: 290 mSDtfsCounter, 58 mSDsluCounter, 4030 mSDsCounter, 0 mSdLazyCounter, 2220 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 4320 SdHoareTripleChecker+Invalid, 2229 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 2220 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.4s IncrementalHoareTripleChecker+Time [2022-12-14 13:39:53,745 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [58 Valid, 4320 Invalid, 2229 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [9 Valid, 2220 Invalid, 0 Unknown, 0 Unchecked, 6.4s Time] [2022-12-14 13:39:53,747 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 347 states. [2022-12-14 13:39:53,822 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 347 to 305. [2022-12-14 13:39:53,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 305 states, 188 states have (on average 1.351063829787234) internal successors, (254), 192 states have internal predecessors, (254), 87 states have call successors, (87), 29 states have call predecessors, (87), 29 states have return successors, (86), 85 states have call predecessors, (86), 86 states have call successors, (86) [2022-12-14 13:39:53,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 305 states to 305 states and 427 transitions. [2022-12-14 13:39:53,826 INFO L78 Accepts]: Start accepts. Automaton has 305 states and 427 transitions. Word has length 94 [2022-12-14 13:39:53,826 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 13:39:53,826 INFO L495 AbstractCegarLoop]: Abstraction has 305 states and 427 transitions. [2022-12-14 13:39:53,826 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 16 states have (on average 2.9375) internal successors, (47), 15 states have internal predecessors, (47), 7 states have call successors, (21), 3 states have call predecessors, (21), 3 states have return successors, (18), 7 states have call predecessors, (18), 7 states have call successors, (18) [2022-12-14 13:39:53,827 INFO L276 IsEmpty]: Start isEmpty. Operand 305 states and 427 transitions. [2022-12-14 13:39:53,829 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-12-14 13:39:53,829 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 13:39:53,829 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 13:39:53,836 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6473b25-ea49-4599-8517-4cbddf34f1ba/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-12-14 13:39:54,030 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6473b25-ea49-4599-8517-4cbddf34f1ba/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 13:39:54,031 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting outgoing__wrappee__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 13:39:54,032 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 13:39:54,032 INFO L85 PathProgramCache]: Analyzing trace with hash -1408083177, now seen corresponding path program 1 times [2022-12-14 13:39:54,033 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 13:39:54,033 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1715333190] [2022-12-14 13:39:54,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 13:39:54,034 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 13:39:54,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 13:39:54,105 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-12-14 13:39:54,105 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 13:39:54,105 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1715333190] [2022-12-14 13:39:54,105 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1715333190] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 13:39:54,105 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 13:39:54,105 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 13:39:54,106 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1935614425] [2022-12-14 13:39:54,106 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 13:39:54,106 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 13:39:54,106 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 13:39:54,107 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 13:39:54,107 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 13:39:54,107 INFO L87 Difference]: Start difference. First operand 305 states and 427 transitions. Second operand has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 2 states have call successors, (22), 2 states have call predecessors, (22), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2022-12-14 13:39:54,352 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 13:39:54,352 INFO L93 Difference]: Finished difference Result 713 states and 1034 transitions. [2022-12-14 13:39:54,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 13:39:54,353 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 2 states have call successors, (22), 2 states have call predecessors, (22), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) Word has length 99 [2022-12-14 13:39:54,353 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 13:39:54,355 INFO L225 Difference]: With dead ends: 713 [2022-12-14 13:39:54,355 INFO L226 Difference]: Without dead ends: 432 [2022-12-14 13:39:54,356 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 13:39:54,356 INFO L413 NwaCegarLoop]: 290 mSDtfsCounter, 57 mSDsluCounter, 264 mSDsCounter, 0 mSdLazyCounter, 90 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 75 SdHoareTripleChecker+Valid, 554 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 13:39:54,356 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [75 Valid, 554 Invalid, 91 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 90 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 13:39:54,357 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 432 states. [2022-12-14 13:39:54,458 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 432 to 427. [2022-12-14 13:39:54,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 427 states, 279 states have (on average 1.4121863799283154) internal successors, (394), 283 states have internal predecessors, (394), 118 states have call successors, (118), 29 states have call predecessors, (118), 29 states have return successors, (117), 116 states have call predecessors, (117), 117 states have call successors, (117) [2022-12-14 13:39:54,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 427 states to 427 states and 629 transitions. [2022-12-14 13:39:54,460 INFO L78 Accepts]: Start accepts. Automaton has 427 states and 629 transitions. Word has length 99 [2022-12-14 13:39:54,461 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 13:39:54,461 INFO L495 AbstractCegarLoop]: Abstraction has 427 states and 629 transitions. [2022-12-14 13:39:54,461 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 2 states have call successors, (22), 2 states have call predecessors, (22), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2022-12-14 13:39:54,461 INFO L276 IsEmpty]: Start isEmpty. Operand 427 states and 629 transitions. [2022-12-14 13:39:54,462 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2022-12-14 13:39:54,463 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 13:39:54,463 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 13:39:54,463 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-12-14 13:39:54,463 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting outgoing__wrappee__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 13:39:54,463 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 13:39:54,463 INFO L85 PathProgramCache]: Analyzing trace with hash 1587219344, now seen corresponding path program 1 times [2022-12-14 13:39:54,463 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 13:39:54,463 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [102457309] [2022-12-14 13:39:54,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 13:39:54,464 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 13:39:54,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 13:39:54,583 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-12-14 13:39:54,583 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 13:39:54,583 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [102457309] [2022-12-14 13:39:54,583 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [102457309] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 13:39:54,583 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [917958926] [2022-12-14 13:39:54,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 13:39:54,584 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 13:39:54,584 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6473b25-ea49-4599-8517-4cbddf34f1ba/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 13:39:54,585 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6473b25-ea49-4599-8517-4cbddf34f1ba/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 13:39:54,586 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6473b25-ea49-4599-8517-4cbddf34f1ba/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-12-14 13:39:54,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 13:39:54,831 INFO L263 TraceCheckSpWp]: Trace formula consists of 1285 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-14 13:39:54,834 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 13:39:54,856 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-12-14 13:39:54,856 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 13:39:54,918 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-12-14 13:39:54,918 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [917958926] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 13:39:54,918 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [947908419] [2022-12-14 13:39:54,922 INFO L159 IcfgInterpreter]: Started Sifa with 90 locations of interest [2022-12-14 13:39:54,922 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 13:39:54,923 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 13:39:54,923 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 13:39:54,923 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 13:40:47,691 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 444 for LOIs [2022-12-14 13:40:48,021 INFO L197 IcfgInterpreter]: Interpreting procedure setClientPrivateKey with input of size 445 for LOIs [2022-12-14 13:40:48,343 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 13:41:31,976 WARN L233 SmtUtils]: Spent 9.53s on a formula simplification. DAG size of input: 583 DAG size of output: 412 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 13:41:54,366 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [947908419] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 13:41:54,366 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-12-14 13:41:54,366 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [24] imperfect sequences [4, 4, 4] total 30 [2022-12-14 13:41:54,366 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1881318831] [2022-12-14 13:41:54,366 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 13:41:54,366 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-12-14 13:41:54,366 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 13:41:54,367 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-12-14 13:41:54,367 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=109, Invalid=761, Unknown=0, NotChecked=0, Total=870 [2022-12-14 13:41:54,367 INFO L87 Difference]: Start difference. First operand 427 states and 629 transitions. Second operand has 25 states, 19 states have (on average 2.789473684210526) internal successors, (53), 18 states have internal predecessors, (53), 8 states have call successors, (25), 3 states have call predecessors, (25), 3 states have return successors, (22), 8 states have call predecessors, (22), 8 states have call successors, (22) [2022-12-14 13:42:00,969 WARN L233 SmtUtils]: Spent 5.54s on a formula simplification. DAG size of input: 483 DAG size of output: 376 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 13:42:26,313 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 13:42:26,313 INFO L93 Difference]: Finished difference Result 896 states and 1360 transitions. [2022-12-14 13:42:26,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-12-14 13:42:26,314 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 19 states have (on average 2.789473684210526) internal successors, (53), 18 states have internal predecessors, (53), 8 states have call successors, (25), 3 states have call predecessors, (25), 3 states have return successors, (22), 8 states have call predecessors, (22), 8 states have call successors, (22) Word has length 111 [2022-12-14 13:42:26,314 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 13:42:26,317 INFO L225 Difference]: With dead ends: 896 [2022-12-14 13:42:26,317 INFO L226 Difference]: Without dead ends: 532 [2022-12-14 13:42:26,318 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 343 GetRequests, 305 SyntacticMatches, 2 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 292 ImplicationChecksByTransitivity, 90.0s TimeCoverageRelationStatistics Valid=181, Invalid=1225, Unknown=0, NotChecked=0, Total=1406 [2022-12-14 13:42:26,318 INFO L413 NwaCegarLoop]: 271 mSDtfsCounter, 123 mSDsluCounter, 4249 mSDsCounter, 0 mSdLazyCounter, 2504 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 125 SdHoareTripleChecker+Valid, 4520 SdHoareTripleChecker+Invalid, 2518 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 2504 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.5s IncrementalHoareTripleChecker+Time [2022-12-14 13:42:26,319 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [125 Valid, 4520 Invalid, 2518 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [14 Valid, 2504 Invalid, 0 Unknown, 0 Unchecked, 7.5s Time] [2022-12-14 13:42:26,319 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 532 states. [2022-12-14 13:42:26,468 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 532 to 443. [2022-12-14 13:42:26,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 443 states, 291 states have (on average 1.4123711340206186) internal successors, (411), 297 states have internal predecessors, (411), 121 states have call successors, (121), 30 states have call predecessors, (121), 30 states have return successors, (120), 117 states have call predecessors, (120), 120 states have call successors, (120) [2022-12-14 13:42:26,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 443 states to 443 states and 652 transitions. [2022-12-14 13:42:26,470 INFO L78 Accepts]: Start accepts. Automaton has 443 states and 652 transitions. Word has length 111 [2022-12-14 13:42:26,470 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 13:42:26,471 INFO L495 AbstractCegarLoop]: Abstraction has 443 states and 652 transitions. [2022-12-14 13:42:26,471 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 19 states have (on average 2.789473684210526) internal successors, (53), 18 states have internal predecessors, (53), 8 states have call successors, (25), 3 states have call predecessors, (25), 3 states have return successors, (22), 8 states have call predecessors, (22), 8 states have call successors, (22) [2022-12-14 13:42:26,471 INFO L276 IsEmpty]: Start isEmpty. Operand 443 states and 652 transitions. [2022-12-14 13:42:26,472 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2022-12-14 13:42:26,472 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 13:42:26,472 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 13:42:26,479 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6473b25-ea49-4599-8517-4cbddf34f1ba/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-12-14 13:42:26,673 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6473b25-ea49-4599-8517-4cbddf34f1ba/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 13:42:26,674 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting outgoing__wrappee__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 13:42:26,675 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 13:42:26,675 INFO L85 PathProgramCache]: Analyzing trace with hash 722789552, now seen corresponding path program 1 times [2022-12-14 13:42:26,675 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 13:42:26,676 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1506854679] [2022-12-14 13:42:26,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 13:42:26,677 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 13:42:26,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 13:42:26,818 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 13:42:26,818 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 13:42:26,819 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1506854679] [2022-12-14 13:42:26,819 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1506854679] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 13:42:26,819 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1790032400] [2022-12-14 13:42:26,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 13:42:26,819 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 13:42:26,819 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6473b25-ea49-4599-8517-4cbddf34f1ba/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 13:42:26,820 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6473b25-ea49-4599-8517-4cbddf34f1ba/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 13:42:26,821 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6473b25-ea49-4599-8517-4cbddf34f1ba/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-12-14 13:42:27,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 13:42:27,063 INFO L263 TraceCheckSpWp]: Trace formula consists of 1328 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-14 13:42:27,065 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 13:42:27,081 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 13:42:27,082 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 13:42:27,138 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 13:42:27,138 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1790032400] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 13:42:27,138 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [601496092] [2022-12-14 13:42:27,142 INFO L159 IcfgInterpreter]: Started Sifa with 88 locations of interest [2022-12-14 13:42:27,142 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 13:42:27,142 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 13:42:27,143 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 13:42:27,143 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 13:44:05,872 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 443 for LOIs [2022-12-14 13:44:06,196 INFO L197 IcfgInterpreter]: Interpreting procedure setClientKeyringPublicKey with input of size 438 for LOIs [2022-12-14 13:44:06,535 INFO L197 IcfgInterpreter]: Interpreting procedure setClientKeyringUser with input of size 422 for LOIs [2022-12-14 13:44:06,839 INFO L197 IcfgInterpreter]: Interpreting procedure createClientKeyringEntry with input of size 222 for LOIs [2022-12-14 13:44:06,903 INFO L197 IcfgInterpreter]: Interpreting procedure setClientPrivateKey with input of size 445 for LOIs [2022-12-14 13:44:07,237 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 13:44:47,598 WARN L233 SmtUtils]: Spent 5.12s on a formula simplification. DAG size of input: 533 DAG size of output: 327 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 13:45:05,280 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [601496092] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 13:45:05,280 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-12-14 13:45:05,280 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [28] imperfect sequences [4, 4, 4] total 34 [2022-12-14 13:45:05,280 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1543438762] [2022-12-14 13:45:05,280 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 13:45:05,280 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2022-12-14 13:45:05,280 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 13:45:05,281 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2022-12-14 13:45:05,281 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=106, Invalid=1016, Unknown=0, NotChecked=0, Total=1122 [2022-12-14 13:45:05,281 INFO L87 Difference]: Start difference. First operand 443 states and 652 transitions. Second operand has 29 states, 19 states have (on average 2.6315789473684212) internal successors, (50), 17 states have internal predecessors, (50), 9 states have call successors, (24), 6 states have call predecessors, (24), 6 states have return successors, (21), 10 states have call predecessors, (21), 9 states have call successors, (21) [2022-12-14 13:45:30,057 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 13:45:30,058 INFO L93 Difference]: Finished difference Result 944 states and 1434 transitions. [2022-12-14 13:45:30,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2022-12-14 13:45:30,058 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 19 states have (on average 2.6315789473684212) internal successors, (50), 17 states have internal predecessors, (50), 9 states have call successors, (24), 6 states have call predecessors, (24), 6 states have return successors, (21), 10 states have call predecessors, (21), 9 states have call successors, (21) Word has length 103 [2022-12-14 13:45:30,059 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 13:45:30,060 INFO L225 Difference]: With dead ends: 944 [2022-12-14 13:45:30,061 INFO L226 Difference]: Without dead ends: 580 [2022-12-14 13:45:30,062 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 318 GetRequests, 278 SyntacticMatches, 1 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 308 ImplicationChecksByTransitivity, 71.8s TimeCoverageRelationStatistics Valid=168, Invalid=1472, Unknown=0, NotChecked=0, Total=1640 [2022-12-14 13:45:30,062 INFO L413 NwaCegarLoop]: 282 mSDtfsCounter, 194 mSDsluCounter, 3607 mSDsCounter, 0 mSdLazyCounter, 3662 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 194 SdHoareTripleChecker+Valid, 3889 SdHoareTripleChecker+Invalid, 3679 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 3662 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.5s IncrementalHoareTripleChecker+Time [2022-12-14 13:45:30,063 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [194 Valid, 3889 Invalid, 3679 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [17 Valid, 3662 Invalid, 0 Unknown, 0 Unchecked, 10.5s Time] [2022-12-14 13:45:30,064 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 580 states. [2022-12-14 13:45:30,291 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 580 to 482. [2022-12-14 13:45:30,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 482 states, 323 states have (on average 1.411764705882353) internal successors, (456), 330 states have internal predecessors, (456), 125 states have call successors, (125), 33 states have call predecessors, (125), 33 states have return successors, (124), 120 states have call predecessors, (124), 124 states have call successors, (124) [2022-12-14 13:45:30,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 482 states to 482 states and 705 transitions. [2022-12-14 13:45:30,294 INFO L78 Accepts]: Start accepts. Automaton has 482 states and 705 transitions. Word has length 103 [2022-12-14 13:45:30,294 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 13:45:30,294 INFO L495 AbstractCegarLoop]: Abstraction has 482 states and 705 transitions. [2022-12-14 13:45:30,295 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 19 states have (on average 2.6315789473684212) internal successors, (50), 17 states have internal predecessors, (50), 9 states have call successors, (24), 6 states have call predecessors, (24), 6 states have return successors, (21), 10 states have call predecessors, (21), 9 states have call successors, (21) [2022-12-14 13:45:30,295 INFO L276 IsEmpty]: Start isEmpty. Operand 482 states and 705 transitions. [2022-12-14 13:45:30,296 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2022-12-14 13:45:30,296 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 13:45:30,296 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 13:45:30,304 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6473b25-ea49-4599-8517-4cbddf34f1ba/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-12-14 13:45:30,497 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6473b25-ea49-4599-8517-4cbddf34f1ba/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2022-12-14 13:45:30,497 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting outgoing__wrappee__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 13:45:30,497 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 13:45:30,497 INFO L85 PathProgramCache]: Analyzing trace with hash 1569614281, now seen corresponding path program 1 times [2022-12-14 13:45:30,498 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 13:45:30,498 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1927094003] [2022-12-14 13:45:30,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 13:45:30,498 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 13:45:30,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 13:45:30,589 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 13:45:30,590 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 13:45:30,590 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1927094003] [2022-12-14 13:45:30,590 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1927094003] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 13:45:30,590 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1242998584] [2022-12-14 13:45:30,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 13:45:30,590 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 13:45:30,590 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6473b25-ea49-4599-8517-4cbddf34f1ba/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 13:45:30,591 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6473b25-ea49-4599-8517-4cbddf34f1ba/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 13:45:30,598 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6473b25-ea49-4599-8517-4cbddf34f1ba/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-12-14 13:45:30,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 13:45:30,809 INFO L263 TraceCheckSpWp]: Trace formula consists of 1233 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-14 13:45:30,812 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 13:45:30,828 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 13:45:30,828 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 13:45:30,870 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 13:45:30,871 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1242998584] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 13:45:30,871 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [227324841] [2022-12-14 13:45:30,873 INFO L159 IcfgInterpreter]: Started Sifa with 87 locations of interest [2022-12-14 13:45:30,874 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 13:45:30,874 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 13:45:30,874 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 13:45:30,874 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 13:46:19,274 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 443 for LOIs [2022-12-14 13:46:19,593 INFO L197 IcfgInterpreter]: Interpreting procedure sendEmail with input of size 483 for LOIs [2022-12-14 13:46:59,033 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailTo with input of size 451 for LOIs [2022-12-14 13:46:59,359 INFO L197 IcfgInterpreter]: Interpreting procedure setClientPrivateKey with input of size 445 for LOIs [2022-12-14 13:46:59,680 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing with input of size 481 for LOIs [2022-12-14 13:47:06,029 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing__wrappee__Encrypt with input of size 283 for LOIs [2022-12-14 13:47:17,619 INFO L197 IcfgInterpreter]: Interpreting procedure getClientPrivateKey with input of size 439 for LOIs [2022-12-14 13:47:17,928 INFO L197 IcfgInterpreter]: Interpreting procedure findPublicKey with input of size 253 for LOIs [2022-12-14 13:47:18,006 INFO L197 IcfgInterpreter]: Interpreting procedure getEmailTo with input of size 251 for LOIs [2022-12-14 13:47:18,054 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailFrom with input of size 454 for LOIs [2022-12-14 13:47:18,733 INFO L197 IcfgInterpreter]: Interpreting procedure isEncrypted with input of size 255 for LOIs [2022-12-14 13:47:18,782 INFO L197 IcfgInterpreter]: Interpreting procedure getClientAddressBookSize with input of size 258 for LOIs [2022-12-14 13:47:18,834 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 13:47:54,516 WARN L233 SmtUtils]: Spent 6.39s on a formula simplification. DAG size of input: 603 DAG size of output: 360 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 13:48:01,800 WARN L233 SmtUtils]: Spent 7.01s on a formula simplification. DAG size of input: 605 DAG size of output: 362 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 13:48:07,993 WARN L233 SmtUtils]: Spent 5.90s on a formula simplification. DAG size of input: 604 DAG size of output: 363 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 13:48:14,336 WARN L233 SmtUtils]: Spent 6.05s on a formula simplification. DAG size of input: 602 DAG size of output: 361 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 13:50:11,944 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [227324841] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 13:50:11,944 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-12-14 13:50:11,945 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [67] imperfect sequences [4, 4, 4] total 73 [2022-12-14 13:50:11,945 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1822975889] [2022-12-14 13:50:11,945 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 13:50:11,945 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 68 states [2022-12-14 13:50:11,945 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 13:50:11,946 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 68 interpolants. [2022-12-14 13:50:11,947 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=200, Invalid=5056, Unknown=0, NotChecked=0, Total=5256 [2022-12-14 13:50:11,947 INFO L87 Difference]: Start difference. First operand 482 states and 705 transitions. Second operand has 68 states, 46 states have (on average 1.1956521739130435) internal successors, (55), 43 states have internal predecessors, (55), 19 states have call successors, (21), 13 states have call predecessors, (21), 10 states have return successors, (18), 16 states have call predecessors, (18), 16 states have call successors, (18) [2022-12-14 13:51:59,149 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 13:51:59,149 INFO L93 Difference]: Finished difference Result 1035 states and 1560 transitions. [2022-12-14 13:51:59,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 80 states. [2022-12-14 13:51:59,150 INFO L78 Accepts]: Start accepts. Automaton has has 68 states, 46 states have (on average 1.1956521739130435) internal successors, (55), 43 states have internal predecessors, (55), 19 states have call successors, (21), 13 states have call predecessors, (21), 10 states have return successors, (18), 16 states have call predecessors, (18), 16 states have call successors, (18) Word has length 102 [2022-12-14 13:51:59,150 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 13:51:59,152 INFO L225 Difference]: With dead ends: 1035 [2022-12-14 13:51:59,152 INFO L226 Difference]: Without dead ends: 671 [2022-12-14 13:51:59,154 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 338 GetRequests, 235 SyntacticMatches, 2 SemanticMatches, 101 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2277 ImplicationChecksByTransitivity, 245.0s TimeCoverageRelationStatistics Valid=629, Invalid=9877, Unknown=0, NotChecked=0, Total=10506 [2022-12-14 13:51:59,155 INFO L413 NwaCegarLoop]: 275 mSDtfsCounter, 397 mSDsluCounter, 7393 mSDsCounter, 0 mSdLazyCounter, 11183 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 32.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 410 SdHoareTripleChecker+Valid, 7668 SdHoareTripleChecker+Invalid, 11211 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 11183 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 34.2s IncrementalHoareTripleChecker+Time [2022-12-14 13:51:59,155 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [410 Valid, 7668 Invalid, 11211 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [28 Valid, 11183 Invalid, 0 Unknown, 0 Unchecked, 34.2s Time] [2022-12-14 13:51:59,156 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 671 states. [2022-12-14 13:51:59,512 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 671 to 589. [2022-12-14 13:51:59,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 589 states, 402 states have (on average 1.3980099502487562) internal successors, (562), 410 states have internal predecessors, (562), 145 states have call successors, (145), 43 states have call predecessors, (145), 41 states have return successors, (145), 137 states have call predecessors, (145), 144 states have call successors, (145) [2022-12-14 13:51:59,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 589 states to 589 states and 852 transitions. [2022-12-14 13:51:59,515 INFO L78 Accepts]: Start accepts. Automaton has 589 states and 852 transitions. Word has length 102 [2022-12-14 13:51:59,515 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 13:51:59,515 INFO L495 AbstractCegarLoop]: Abstraction has 589 states and 852 transitions. [2022-12-14 13:51:59,515 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 68 states, 46 states have (on average 1.1956521739130435) internal successors, (55), 43 states have internal predecessors, (55), 19 states have call successors, (21), 13 states have call predecessors, (21), 10 states have return successors, (18), 16 states have call predecessors, (18), 16 states have call successors, (18) [2022-12-14 13:51:59,515 INFO L276 IsEmpty]: Start isEmpty. Operand 589 states and 852 transitions. [2022-12-14 13:51:59,517 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2022-12-14 13:51:59,517 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 13:51:59,517 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 13:51:59,523 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6473b25-ea49-4599-8517-4cbddf34f1ba/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-12-14 13:51:59,717 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6473b25-ea49-4599-8517-4cbddf34f1ba/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2022-12-14 13:51:59,719 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting outgoing__wrappee__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 13:51:59,719 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 13:51:59,720 INFO L85 PathProgramCache]: Analyzing trace with hash -828889542, now seen corresponding path program 1 times [2022-12-14 13:51:59,720 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 13:51:59,720 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1571610673] [2022-12-14 13:51:59,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 13:51:59,721 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 13:51:59,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 13:51:59,859 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-12-14 13:51:59,859 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 13:51:59,859 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1571610673] [2022-12-14 13:51:59,859 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1571610673] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 13:51:59,859 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [870894826] [2022-12-14 13:51:59,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 13:51:59,859 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 13:51:59,859 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6473b25-ea49-4599-8517-4cbddf34f1ba/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 13:51:59,860 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6473b25-ea49-4599-8517-4cbddf34f1ba/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 13:51:59,861 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6473b25-ea49-4599-8517-4cbddf34f1ba/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-12-14 13:52:00,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 13:52:00,093 INFO L263 TraceCheckSpWp]: Trace formula consists of 1236 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-14 13:52:00,095 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 13:52:00,112 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-12-14 13:52:00,112 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 13:52:00,160 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-12-14 13:52:00,160 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [870894826] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 13:52:00,160 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [863729663] [2022-12-14 13:52:00,163 INFO L159 IcfgInterpreter]: Started Sifa with 83 locations of interest [2022-12-14 13:52:00,163 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 13:52:00,163 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 13:52:00,163 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 13:52:00,163 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 13:52:33,976 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 443 for LOIs [2022-12-14 13:52:34,307 INFO L197 IcfgInterpreter]: Interpreting procedure setClientPrivateKey with input of size 445 for LOIs [2022-12-14 13:52:34,632 INFO L180 IcfgInterpreter]: Interpretation finished