./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/email_spec6_product30.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 2329fc70 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fdce2d9-a550-412e-8593-25fb4c423723/bin/utaipan-gh47qXpMRh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fdce2d9-a550-412e-8593-25fb4c423723/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_0fdce2d9-a550-412e-8593-25fb4c423723/bin/utaipan-gh47qXpMRh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fdce2d9-a550-412e-8593-25fb4c423723/bin/utaipan-gh47qXpMRh/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/email_spec6_product30.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fdce2d9-a550-412e-8593-25fb4c423723/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_0fdce2d9-a550-412e-8593-25fb4c423723/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 c6648e04749112dcff3ed26da66b003a84ec072cad34992d8bd41fd0d54f135f --- 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 14:14:39,085 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-14 14:14:39,086 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-14 14:14:39,100 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-14 14:14:39,100 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-14 14:14:39,100 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-14 14:14:39,101 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-14 14:14:39,102 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-14 14:14:39,103 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-14 14:14:39,104 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-14 14:14:39,104 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-14 14:14:39,105 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-14 14:14:39,105 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-14 14:14:39,106 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-14 14:14:39,107 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-14 14:14:39,107 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-14 14:14:39,108 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-14 14:14:39,108 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-14 14:14:39,109 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-14 14:14:39,111 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-14 14:14:39,112 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-14 14:14:39,112 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-14 14:14:39,113 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-14 14:14:39,114 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-14 14:14:39,116 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-14 14:14:39,116 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-14 14:14:39,116 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-14 14:14:39,117 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-14 14:14:39,117 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-14 14:14:39,118 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-14 14:14:39,118 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-14 14:14:39,118 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-14 14:14:39,119 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-14 14:14:39,119 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-14 14:14:39,120 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-14 14:14:39,120 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-14 14:14:39,121 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-14 14:14:39,121 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-14 14:14:39,121 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-14 14:14:39,122 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-14 14:14:39,122 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-14 14:14:39,123 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fdce2d9-a550-412e-8593-25fb4c423723/bin/utaipan-gh47qXpMRh/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-12-14 14:14:39,137 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-14 14:14:39,138 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-14 14:14:39,138 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-14 14:14:39,138 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-14 14:14:39,138 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-14 14:14:39,139 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-14 14:14:39,139 INFO L138 SettingsManager]: * User list type=DISABLED [2022-12-14 14:14:39,139 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-12-14 14:14:39,139 INFO L138 SettingsManager]: * Explicit value domain=true [2022-12-14 14:14:39,139 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-12-14 14:14:39,139 INFO L138 SettingsManager]: * Octagon Domain=false [2022-12-14 14:14:39,139 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-12-14 14:14:39,139 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-12-14 14:14:39,139 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-12-14 14:14:39,140 INFO L138 SettingsManager]: * Interval Domain=false [2022-12-14 14:14:39,140 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-12-14 14:14:39,140 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-12-14 14:14:39,140 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-12-14 14:14:39,140 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-14 14:14:39,141 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-14 14:14:39,141 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-14 14:14:39,141 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-14 14:14:39,141 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-14 14:14:39,141 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-14 14:14:39,141 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-14 14:14:39,141 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-14 14:14:39,141 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-14 14:14:39,142 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-14 14:14:39,142 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-14 14:14:39,142 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-14 14:14:39,142 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-14 14:14:39,142 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-14 14:14:39,142 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 14:14:39,142 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-14 14:14:39,143 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-12-14 14:14:39,143 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-14 14:14:39,143 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-14 14:14:39,143 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-12-14 14:14:39,143 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-14 14:14:39,143 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-14 14:14:39,143 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-12-14 14:14:39,143 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_0fdce2d9-a550-412e-8593-25fb4c423723/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fdce2d9-a550-412e-8593-25fb4c423723/bin/utaipan-gh47qXpMRh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c6648e04749112dcff3ed26da66b003a84ec072cad34992d8bd41fd0d54f135f [2022-12-14 14:14:39,313 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-14 14:14:39,330 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-14 14:14:39,332 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-14 14:14:39,333 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-14 14:14:39,333 INFO L275 PluginConnector]: CDTParser initialized [2022-12-14 14:14:39,334 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fdce2d9-a550-412e-8593-25fb4c423723/bin/utaipan-gh47qXpMRh/../../sv-benchmarks/c/product-lines/email_spec6_product30.cil.c [2022-12-14 14:14:41,912 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-14 14:14:42,128 INFO L351 CDTParser]: Found 1 translation units. [2022-12-14 14:14:42,128 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fdce2d9-a550-412e-8593-25fb4c423723/sv-benchmarks/c/product-lines/email_spec6_product30.cil.c [2022-12-14 14:14:42,153 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fdce2d9-a550-412e-8593-25fb4c423723/bin/utaipan-gh47qXpMRh/data/7523a3114/2befa81238554376b55cac2cd572c676/FLAG69e1695c9 [2022-12-14 14:14:42,163 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fdce2d9-a550-412e-8593-25fb4c423723/bin/utaipan-gh47qXpMRh/data/7523a3114/2befa81238554376b55cac2cd572c676 [2022-12-14 14:14:42,164 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-14 14:14:42,166 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-14 14:14:42,166 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-14 14:14:42,166 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-14 14:14:42,170 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-14 14:14:42,170 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 02:14:42" (1/1) ... [2022-12-14 14:14:42,171 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@48e79abc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:14:42, skipping insertion in model container [2022-12-14 14:14:42,171 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 02:14:42" (1/1) ... [2022-12-14 14:14:42,178 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-14 14:14:42,231 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-14 14:14:42,490 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 14:14:42,493 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 14:14:42,512 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 14:14:42,516 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 14:14:42,525 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 14:14:42,573 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 14:14:42,574 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 14:14:42,576 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 14:14:42,579 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_0fdce2d9-a550-412e-8593-25fb4c423723/sv-benchmarks/c/product-lines/email_spec6_product30.cil.c[64728,64741] [2022-12-14 14:14:42,582 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 14:14:42,595 INFO L203 MainTranslator]: Completed pre-run [2022-12-14 14:14:42,638 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 14:14:42,639 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 14:14:42,641 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 14:14:42,643 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 14:14:42,663 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 14:14:42,694 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 14:14:42,695 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 14:14:42,696 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 14:14:42,699 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_0fdce2d9-a550-412e-8593-25fb4c423723/sv-benchmarks/c/product-lines/email_spec6_product30.cil.c[64728,64741] [2022-12-14 14:14:42,700 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 14:14:42,728 INFO L208 MainTranslator]: Completed translation [2022-12-14 14:14:42,729 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:14:42 WrapperNode [2022-12-14 14:14:42,729 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-14 14:14:42,730 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-14 14:14:42,730 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-14 14:14:42,730 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-14 14:14:42,737 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:14:42" (1/1) ... [2022-12-14 14:14:42,760 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:14:42" (1/1) ... [2022-12-14 14:14:42,800 INFO L138 Inliner]: procedures = 132, calls = 225, calls flagged for inlining = 61, calls inlined = 51, statements flattened = 936 [2022-12-14 14:14:42,800 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-14 14:14:42,801 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-14 14:14:42,801 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-14 14:14:42,801 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-14 14:14:42,808 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:14:42" (1/1) ... [2022-12-14 14:14:42,809 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:14:42" (1/1) ... [2022-12-14 14:14:42,814 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:14:42" (1/1) ... [2022-12-14 14:14:42,814 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:14:42" (1/1) ... [2022-12-14 14:14:42,826 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:14:42" (1/1) ... [2022-12-14 14:14:42,834 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:14:42" (1/1) ... [2022-12-14 14:14:42,839 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:14:42" (1/1) ... [2022-12-14 14:14:42,843 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:14:42" (1/1) ... [2022-12-14 14:14:42,849 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-14 14:14:42,850 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-14 14:14:42,850 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-14 14:14:42,851 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-14 14:14:42,852 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:14:42" (1/1) ... [2022-12-14 14:14:42,859 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 14:14:42,871 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fdce2d9-a550-412e-8593-25fb4c423723/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 14:14:42,883 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fdce2d9-a550-412e-8593-25fb4c423723/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-14 14:14:42,885 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fdce2d9-a550-412e-8593-25fb4c423723/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-14 14:14:42,919 INFO L130 BoogieDeclarations]: Found specification of procedure getClientPrivateKey [2022-12-14 14:14:42,920 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientPrivateKey [2022-12-14 14:14:42,920 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailEncryptionKey [2022-12-14 14:14:42,920 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailEncryptionKey [2022-12-14 14:14:42,920 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailEncryptionKey [2022-12-14 14:14:42,920 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailEncryptionKey [2022-12-14 14:14:42,920 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2022-12-14 14:14:42,920 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2022-12-14 14:14:42,921 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2022-12-14 14:14:42,921 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2022-12-14 14:14:42,921 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable [2022-12-14 14:14:42,921 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable [2022-12-14 14:14:42,921 INFO L130 BoogieDeclarations]: Found specification of procedure createClientKeyringEntry [2022-12-14 14:14:42,921 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientKeyringEntry [2022-12-14 14:14:42,921 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsEncrypted [2022-12-14 14:14:42,921 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsEncrypted [2022-12-14 14:14:42,922 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSignKey [2022-12-14 14:14:42,922 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSignKey [2022-12-14 14:14:42,922 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAdd [2022-12-14 14:14:42,922 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAdd [2022-12-14 14:14:42,922 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2022-12-14 14:14:42,922 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailFrom [2022-12-14 14:14:42,922 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailFrom [2022-12-14 14:14:42,923 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2022-12-14 14:14:42,923 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2022-12-14 14:14:42,923 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-14 14:14:42,923 INFO L130 BoogieDeclarations]: Found specification of procedure isSigned [2022-12-14 14:14:42,923 INFO L138 BoogieDeclarations]: Found implementation of procedure isSigned [2022-12-14 14:14:42,923 INFO L130 BoogieDeclarations]: Found specification of procedure isKeyPairValid [2022-12-14 14:14:42,923 INFO L138 BoogieDeclarations]: Found implementation of procedure isKeyPairValid [2022-12-14 14:14:42,923 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringUser [2022-12-14 14:14:42,924 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringUser [2022-12-14 14:14:42,924 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringPublicKey [2022-12-14 14:14:42,924 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringPublicKey [2022-12-14 14:14:42,924 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2022-12-14 14:14:42,924 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2022-12-14 14:14:42,924 INFO L130 BoogieDeclarations]: Found specification of procedure findPublicKey [2022-12-14 14:14:42,924 INFO L138 BoogieDeclarations]: Found implementation of procedure findPublicKey [2022-12-14 14:14:42,924 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2022-12-14 14:14:42,925 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2022-12-14 14:14:42,925 INFO L130 BoogieDeclarations]: Found specification of procedure isEncrypted [2022-12-14 14:14:42,925 INFO L138 BoogieDeclarations]: Found implementation of procedure isEncrypted [2022-12-14 14:14:42,925 INFO L130 BoogieDeclarations]: Found specification of procedure setClientPrivateKey [2022-12-14 14:14:42,925 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientPrivateKey [2022-12-14 14:14:42,925 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailTo [2022-12-14 14:14:42,925 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailTo [2022-12-14 14:14:42,925 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-14 14:14:42,926 INFO L130 BoogieDeclarations]: Found specification of procedure generateKeyPair [2022-12-14 14:14:42,926 INFO L138 BoogieDeclarations]: Found implementation of procedure generateKeyPair [2022-12-14 14:14:42,926 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-14 14:14:42,926 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-14 14:14:43,093 INFO L235 CfgBuilder]: Building ICFG [2022-12-14 14:14:43,095 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-14 14:14:43,685 INFO L276 CfgBuilder]: Performing block encoding [2022-12-14 14:14:44,003 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-14 14:14:44,003 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-12-14 14:14:44,006 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 02:14:44 BoogieIcfgContainer [2022-12-14 14:14:44,006 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-14 14:14:44,009 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-14 14:14:44,009 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-14 14:14:44,012 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-14 14:14:44,012 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.12 02:14:42" (1/3) ... [2022-12-14 14:14:44,013 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4ac419cb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 02:14:44, skipping insertion in model container [2022-12-14 14:14:44,013 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:14:42" (2/3) ... [2022-12-14 14:14:44,013 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4ac419cb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 02:14:44, skipping insertion in model container [2022-12-14 14:14:44,013 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 02:14:44" (3/3) ... [2022-12-14 14:14:44,015 INFO L112 eAbstractionObserver]: Analyzing ICFG email_spec6_product30.cil.c [2022-12-14 14:14:44,034 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-14 14:14:44,034 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-12-14 14:14:44,096 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-14 14:14:44,103 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;@61f3b05f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-14 14:14:44,104 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-12-14 14:14:44,109 INFO L276 IsEmpty]: Start isEmpty. Operand has 193 states, 113 states have (on average 1.3274336283185841) internal successors, (150), 117 states have internal predecessors, (150), 55 states have call successors, (55), 23 states have call predecessors, (55), 23 states have return successors, (55), 55 states have call predecessors, (55), 55 states have call successors, (55) [2022-12-14 14:14:44,124 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2022-12-14 14:14:44,124 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 14:14:44,125 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 14:14:44,126 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 14:14:44,130 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 14:14:44,131 INFO L85 PathProgramCache]: Analyzing trace with hash 1155993432, now seen corresponding path program 1 times [2022-12-14 14:14:44,139 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 14:14:44,140 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [648064900] [2022-12-14 14:14:44,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 14:14:44,141 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 14:14:44,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 14:14:44,492 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 14:14:44,493 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 14:14:44,493 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [648064900] [2022-12-14 14:14:44,493 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [648064900] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 14:14:44,494 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 14:14:44,494 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-14 14:14:44,495 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1254280005] [2022-12-14 14:14:44,496 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 14:14:44,500 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-12-14 14:14:44,501 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 14:14:44,528 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-12-14 14:14:44,528 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-12-14 14:14:44,531 INFO L87 Difference]: Start difference. First operand has 193 states, 113 states have (on average 1.3274336283185841) internal successors, (150), 117 states have internal predecessors, (150), 55 states have call successors, (55), 23 states have call predecessors, (55), 23 states have return successors, (55), 55 states have call predecessors, (55), 55 states have call successors, (55) Second operand has 2 states, 2 states have (on average 18.5) internal successors, (37), 2 states have internal predecessors, (37), 2 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-12-14 14:14:44,650 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 14:14:44,651 INFO L93 Difference]: Finished difference Result 303 states and 398 transitions. [2022-12-14 14:14:44,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-12-14 14:14:44,653 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 18.5) internal successors, (37), 2 states have internal predecessors, (37), 2 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 80 [2022-12-14 14:14:44,654 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 14:14:44,665 INFO L225 Difference]: With dead ends: 303 [2022-12-14 14:14:44,665 INFO L226 Difference]: Without dead ends: 190 [2022-12-14 14:14:44,670 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 14:14:44,673 INFO L413 NwaCegarLoop]: 222 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 222 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 14:14:44,674 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 222 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 14:14:44,689 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 190 states. [2022-12-14 14:14:44,722 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 190 to 190. [2022-12-14 14:14:44,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 190 states, 111 states have (on average 1.2972972972972974) internal successors, (144), 114 states have internal predecessors, (144), 55 states have call successors, (55), 23 states have call predecessors, (55), 23 states have return successors, (54), 54 states have call predecessors, (54), 54 states have call successors, (54) [2022-12-14 14:14:44,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 190 states to 190 states and 253 transitions. [2022-12-14 14:14:44,729 INFO L78 Accepts]: Start accepts. Automaton has 190 states and 253 transitions. Word has length 80 [2022-12-14 14:14:44,730 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 14:14:44,730 INFO L495 AbstractCegarLoop]: Abstraction has 190 states and 253 transitions. [2022-12-14 14:14:44,731 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 18.5) internal successors, (37), 2 states have internal predecessors, (37), 2 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-12-14 14:14:44,731 INFO L276 IsEmpty]: Start isEmpty. Operand 190 states and 253 transitions. [2022-12-14 14:14:44,736 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2022-12-14 14:14:44,736 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 14:14:44,737 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 14:14:44,737 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-14 14:14:44,737 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 14:14:44,738 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 14:14:44,738 INFO L85 PathProgramCache]: Analyzing trace with hash -1237755562, now seen corresponding path program 1 times [2022-12-14 14:14:44,738 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 14:14:44,738 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2054491865] [2022-12-14 14:14:44,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 14:14:44,738 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 14:14:44,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 14:14:44,955 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 14:14:44,956 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 14:14:44,956 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2054491865] [2022-12-14 14:14:44,956 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2054491865] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 14:14:44,956 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 14:14:44,956 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 14:14:44,956 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [765291950] [2022-12-14 14:14:44,957 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 14:14:44,958 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 14:14:44,958 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 14:14:44,959 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 14:14:44,959 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 14:14:44,959 INFO L87 Difference]: Start difference. First operand 190 states and 253 transitions. Second operand has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 2 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-12-14 14:14:45,065 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 14:14:45,066 INFO L93 Difference]: Finished difference Result 299 states and 386 transitions. [2022-12-14 14:14:45,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 14:14:45,066 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 2 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 81 [2022-12-14 14:14:45,066 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 14:14:45,069 INFO L225 Difference]: With dead ends: 299 [2022-12-14 14:14:45,069 INFO L226 Difference]: Without dead ends: 192 [2022-12-14 14:14:45,071 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 14:14:45,073 INFO L413 NwaCegarLoop]: 219 mSDtfsCounter, 0 mSDsluCounter, 218 mSDsCounter, 0 mSdLazyCounter, 68 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 437 SdHoareTripleChecker+Invalid, 68 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 68 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 14:14:45,073 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 437 Invalid, 68 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 68 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 14:14:45,075 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 192 states. [2022-12-14 14:14:45,091 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 192 to 192. [2022-12-14 14:14:45,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 192 states, 113 states have (on average 1.2920353982300885) internal successors, (146), 116 states have internal predecessors, (146), 55 states have call successors, (55), 23 states have call predecessors, (55), 23 states have return successors, (54), 54 states have call predecessors, (54), 54 states have call successors, (54) [2022-12-14 14:14:45,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 192 states to 192 states and 255 transitions. [2022-12-14 14:14:45,095 INFO L78 Accepts]: Start accepts. Automaton has 192 states and 255 transitions. Word has length 81 [2022-12-14 14:14:45,095 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 14:14:45,095 INFO L495 AbstractCegarLoop]: Abstraction has 192 states and 255 transitions. [2022-12-14 14:14:45,095 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 2 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-12-14 14:14:45,096 INFO L276 IsEmpty]: Start isEmpty. Operand 192 states and 255 transitions. [2022-12-14 14:14:45,098 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2022-12-14 14:14:45,098 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 14:14:45,098 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] [2022-12-14 14:14:45,098 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-14 14:14:45,099 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 14:14:45,099 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 14:14:45,099 INFO L85 PathProgramCache]: Analyzing trace with hash -1478124312, now seen corresponding path program 1 times [2022-12-14 14:14:45,099 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 14:14:45,100 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1453534233] [2022-12-14 14:14:45,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 14:14:45,100 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 14:14:45,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 14:14:45,200 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-12-14 14:14:45,200 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 14:14:45,200 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1453534233] [2022-12-14 14:14:45,200 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1453534233] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 14:14:45,201 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 14:14:45,201 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 14:14:45,201 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1935774737] [2022-12-14 14:14:45,201 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 14:14:45,202 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 14:14:45,202 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 14:14:45,202 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 14:14:45,203 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 14:14:45,203 INFO L87 Difference]: Start difference. First operand 192 states and 255 transitions. Second operand has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 2 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-12-14 14:14:45,298 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 14:14:45,298 INFO L93 Difference]: Finished difference Result 414 states and 569 transitions. [2022-12-14 14:14:45,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 14:14:45,299 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 2 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 86 [2022-12-14 14:14:45,299 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 14:14:45,301 INFO L225 Difference]: With dead ends: 414 [2022-12-14 14:14:45,301 INFO L226 Difference]: Without dead ends: 240 [2022-12-14 14:14:45,302 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 14:14:45,303 INFO L413 NwaCegarLoop]: 236 mSDtfsCounter, 57 mSDsluCounter, 212 mSDsCounter, 0 mSdLazyCounter, 69 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 448 SdHoareTripleChecker+Invalid, 70 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 69 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 14:14:45,304 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [72 Valid, 448 Invalid, 70 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 69 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 14:14:45,305 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 240 states. [2022-12-14 14:14:45,320 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 240 to 235. [2022-12-14 14:14:45,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 235 states, 145 states have (on average 1.3724137931034484) internal successors, (199), 148 states have internal predecessors, (199), 66 states have call successors, (66), 23 states have call predecessors, (66), 23 states have return successors, (65), 65 states have call predecessors, (65), 65 states have call successors, (65) [2022-12-14 14:14:45,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 235 states to 235 states and 330 transitions. [2022-12-14 14:14:45,323 INFO L78 Accepts]: Start accepts. Automaton has 235 states and 330 transitions. Word has length 86 [2022-12-14 14:14:45,324 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 14:14:45,324 INFO L495 AbstractCegarLoop]: Abstraction has 235 states and 330 transitions. [2022-12-14 14:14:45,324 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 2 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-12-14 14:14:45,324 INFO L276 IsEmpty]: Start isEmpty. Operand 235 states and 330 transitions. [2022-12-14 14:14:45,326 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2022-12-14 14:14:45,326 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 14:14:45,327 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] [2022-12-14 14:14:45,327 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-12-14 14:14:45,327 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 14:14:45,327 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 14:14:45,327 INFO L85 PathProgramCache]: Analyzing trace with hash 1537481215, now seen corresponding path program 1 times [2022-12-14 14:14:45,328 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 14:14:45,328 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1633973993] [2022-12-14 14:14:45,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 14:14:45,328 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 14:14:45,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 14:14:45,504 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 14:14:45,505 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 14:14:45,505 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1633973993] [2022-12-14 14:14:45,505 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1633973993] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 14:14:45,505 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [597535009] [2022-12-14 14:14:45,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 14:14:45,505 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 14:14:45,505 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fdce2d9-a550-412e-8593-25fb4c423723/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 14:14:45,506 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fdce2d9-a550-412e-8593-25fb4c423723/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 14:14:45,507 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fdce2d9-a550-412e-8593-25fb4c423723/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-12-14 14:14:45,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 14:14:45,746 INFO L263 TraceCheckSpWp]: Trace formula consists of 1112 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-14 14:14:45,757 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 14:14:45,806 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 14:14:45,807 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 14:14:45,880 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 14:14:45,880 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [597535009] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 14:14:45,880 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [912545199] [2022-12-14 14:14:45,896 INFO L159 IcfgInterpreter]: Started Sifa with 72 locations of interest [2022-12-14 14:14:45,896 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 14:14:45,899 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 14:14:45,903 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 14:14:45,903 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 14:15:21,579 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 443 for LOIs [2022-12-14 14:15:21,864 INFO L197 IcfgInterpreter]: Interpreting procedure sendEmail with input of size 483 for LOIs [2022-12-14 14:15:57,201 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailTo with input of size 451 for LOIs [2022-12-14 14:15:57,563 INFO L197 IcfgInterpreter]: Interpreting procedure setClientPrivateKey with input of size 445 for LOIs [2022-12-14 14:15:57,863 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing with input of size 481 for LOIs [2022-12-14 14:16:32,050 INFO L197 IcfgInterpreter]: Interpreting procedure getClientPrivateKey with input of size 439 for LOIs [2022-12-14 14:16:32,320 INFO L197 IcfgInterpreter]: Interpreting procedure findPublicKey with input of size 252 for LOIs [2022-12-14 14:16:32,392 INFO L197 IcfgInterpreter]: Interpreting procedure getEmailTo with input of size 250 for LOIs [2022-12-14 14:16:32,439 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailFrom with input of size 452 for LOIs [2022-12-14 14:16:33,029 INFO L197 IcfgInterpreter]: Interpreting procedure isEncrypted with input of size 254 for LOIs [2022-12-14 14:16:33,071 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 14:17:50,873 WARN L233 SmtUtils]: Spent 5.38s on a formula simplification. DAG size of input: 544 DAG size of output: 362 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 14:18:46,131 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [912545199] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 14:18:46,131 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-12-14 14:18:46,131 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [53] imperfect sequences [4, 4, 4] total 59 [2022-12-14 14:18:46,132 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [152196970] [2022-12-14 14:18:46,132 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 14:18:46,132 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 54 states [2022-12-14 14:18:46,132 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 14:18:46,133 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2022-12-14 14:18:46,134 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=157, Invalid=3265, Unknown=0, NotChecked=0, Total=3422 [2022-12-14 14:18:46,134 INFO L87 Difference]: Start difference. First operand 235 states and 330 transitions. Second operand has 54 states, 34 states have (on average 1.2647058823529411) internal successors, (43), 32 states have internal predecessors, (43), 17 states have call successors, (19), 11 states have call predecessors, (19), 9 states have return successors, (17), 15 states have call predecessors, (17), 15 states have call successors, (17) [2022-12-14 14:19:38,542 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 14:19:38,542 INFO L93 Difference]: Finished difference Result 679 states and 1040 transitions. [2022-12-14 14:19:38,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2022-12-14 14:19:38,543 INFO L78 Accepts]: Start accepts. Automaton has has 54 states, 34 states have (on average 1.2647058823529411) internal successors, (43), 32 states have internal predecessors, (43), 17 states have call successors, (19), 11 states have call predecessors, (19), 9 states have return successors, (17), 15 states have call predecessors, (17), 15 states have call successors, (17) Word has length 87 [2022-12-14 14:19:38,543 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 14:19:38,545 INFO L225 Difference]: With dead ends: 679 [2022-12-14 14:19:38,545 INFO L226 Difference]: Without dead ends: 462 [2022-12-14 14:19:38,546 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 274 GetRequests, 205 SyntacticMatches, 1 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1059 ImplicationChecksByTransitivity, 160.1s TimeCoverageRelationStatistics Valid=233, Invalid=4597, Unknown=0, NotChecked=0, Total=4830 [2022-12-14 14:19:38,547 INFO L413 NwaCegarLoop]: 309 mSDtfsCounter, 377 mSDsluCounter, 7233 mSDsCounter, 0 mSdLazyCounter, 8434 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 23.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 390 SdHoareTripleChecker+Valid, 7542 SdHoareTripleChecker+Invalid, 8477 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 8434 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 24.7s IncrementalHoareTripleChecker+Time [2022-12-14 14:19:38,547 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [390 Valid, 7542 Invalid, 8477 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [43 Valid, 8434 Invalid, 0 Unknown, 0 Unchecked, 24.7s Time] [2022-12-14 14:19:38,548 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 462 states. [2022-12-14 14:19:38,710 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 462 to 363. [2022-12-14 14:19:38,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 363 states, 247 states have (on average 1.4210526315789473) internal successors, (351), 251 states have internal predecessors, (351), 84 states have call successors, (84), 32 states have call predecessors, (84), 31 states have return successors, (84), 81 states have call predecessors, (84), 83 states have call successors, (84) [2022-12-14 14:19:38,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 363 states to 363 states and 519 transitions. [2022-12-14 14:19:38,712 INFO L78 Accepts]: Start accepts. Automaton has 363 states and 519 transitions. Word has length 87 [2022-12-14 14:19:38,712 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 14:19:38,713 INFO L495 AbstractCegarLoop]: Abstraction has 363 states and 519 transitions. [2022-12-14 14:19:38,713 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 54 states, 34 states have (on average 1.2647058823529411) internal successors, (43), 32 states have internal predecessors, (43), 17 states have call successors, (19), 11 states have call predecessors, (19), 9 states have return successors, (17), 15 states have call predecessors, (17), 15 states have call successors, (17) [2022-12-14 14:19:38,713 INFO L276 IsEmpty]: Start isEmpty. Operand 363 states and 519 transitions. [2022-12-14 14:19:38,714 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2022-12-14 14:19:38,714 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 14:19:38,714 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] [2022-12-14 14:19:38,721 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fdce2d9-a550-412e-8593-25fb4c423723/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-12-14 14:19:38,915 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fdce2d9-a550-412e-8593-25fb4c423723/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 14:19:38,916 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 14:19:38,917 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 14:19:38,917 INFO L85 PathProgramCache]: Analyzing trace with hash 1142928577, now seen corresponding path program 1 times [2022-12-14 14:19:38,918 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 14:19:38,918 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1572622204] [2022-12-14 14:19:38,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 14:19:38,919 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 14:19:38,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 14:19:38,999 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 14:19:38,999 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 14:19:38,999 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1572622204] [2022-12-14 14:19:38,999 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1572622204] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 14:19:39,000 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 14:19:39,000 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 14:19:39,000 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1015381349] [2022-12-14 14:19:39,000 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 14:19:39,000 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 14:19:39,001 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 14:19:39,001 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 14:19:39,001 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 14:19:39,001 INFO L87 Difference]: Start difference. First operand 363 states and 519 transitions. Second operand has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 2 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2022-12-14 14:19:39,373 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 14:19:39,373 INFO L93 Difference]: Finished difference Result 799 states and 1172 transitions. [2022-12-14 14:19:39,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 14:19:39,374 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 2 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 92 [2022-12-14 14:19:39,374 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 14:19:39,378 INFO L225 Difference]: With dead ends: 799 [2022-12-14 14:19:39,378 INFO L226 Difference]: Without dead ends: 478 [2022-12-14 14:19:39,379 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 14:19:39,379 INFO L413 NwaCegarLoop]: 242 mSDtfsCounter, 55 mSDsluCounter, 221 mSDsCounter, 0 mSdLazyCounter, 71 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 70 SdHoareTripleChecker+Valid, 463 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 71 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 14:19:39,379 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [70 Valid, 463 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 71 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 14:19:39,380 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 478 states. [2022-12-14 14:19:39,590 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 478 to 471. [2022-12-14 14:19:39,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 471 states, 330 states have (on average 1.4575757575757575) internal successors, (481), 334 states have internal predecessors, (481), 109 states have call successors, (109), 32 states have call predecessors, (109), 31 states have return successors, (109), 106 states have call predecessors, (109), 108 states have call successors, (109) [2022-12-14 14:19:39,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 471 states to 471 states and 699 transitions. [2022-12-14 14:19:39,592 INFO L78 Accepts]: Start accepts. Automaton has 471 states and 699 transitions. Word has length 92 [2022-12-14 14:19:39,592 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 14:19:39,592 INFO L495 AbstractCegarLoop]: Abstraction has 471 states and 699 transitions. [2022-12-14 14:19:39,592 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 2 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2022-12-14 14:19:39,593 INFO L276 IsEmpty]: Start isEmpty. Operand 471 states and 699 transitions. [2022-12-14 14:19:39,594 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2022-12-14 14:19:39,594 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 14:19:39,594 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] [2022-12-14 14:19:39,594 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-12-14 14:19:39,594 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 14:19:39,594 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 14:19:39,594 INFO L85 PathProgramCache]: Analyzing trace with hash -1736722059, now seen corresponding path program 1 times [2022-12-14 14:19:39,595 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 14:19:39,595 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [179594658] [2022-12-14 14:19:39,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 14:19:39,595 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 14:19:39,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 14:19:39,680 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-12-14 14:19:39,681 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 14:19:39,681 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [179594658] [2022-12-14 14:19:39,681 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [179594658] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 14:19:39,681 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1759025683] [2022-12-14 14:19:39,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 14:19:39,681 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 14:19:39,681 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fdce2d9-a550-412e-8593-25fb4c423723/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 14:19:39,682 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fdce2d9-a550-412e-8593-25fb4c423723/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 14:19:39,683 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fdce2d9-a550-412e-8593-25fb4c423723/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-12-14 14:19:39,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 14:19:39,882 INFO L263 TraceCheckSpWp]: Trace formula consists of 1133 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-14 14:19:39,885 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 14:19:39,903 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-12-14 14:19:39,903 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 14:19:39,957 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-12-14 14:19:39,957 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1759025683] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 14:19:39,957 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [117836938] [2022-12-14 14:19:39,961 INFO L159 IcfgInterpreter]: Started Sifa with 76 locations of interest [2022-12-14 14:19:39,961 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 14:19:39,962 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 14:19:39,962 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 14:19:39,962 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 14:20:19,226 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 443 for LOIs [2022-12-14 14:20:19,511 INFO L197 IcfgInterpreter]: Interpreting procedure setClientPrivateKey with input of size 445 for LOIs [2022-12-14 14:20:19,794 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 14:21:00,092 WARN L233 SmtUtils]: Spent 8.67s on a formula simplification. DAG size of input: 583 DAG size of output: 411 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 14:21:19,194 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [117836938] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 14:21:19,194 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-12-14 14:21:19,195 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [24] imperfect sequences [4, 4, 4] total 30 [2022-12-14 14:21:19,195 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1564720754] [2022-12-14 14:21:19,195 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 14:21:19,195 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-12-14 14:21:19,195 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 14:21:19,195 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-12-14 14:21:19,196 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=110, Invalid=760, Unknown=0, NotChecked=0, Total=870 [2022-12-14 14:21:19,196 INFO L87 Difference]: Start difference. First operand 471 states and 699 transitions. Second operand has 25 states, 19 states have (on average 2.4210526315789473) internal successors, (46), 18 states have internal predecessors, (46), 8 states have call successors, (20), 3 states have call predecessors, (20), 3 states have return successors, (18), 8 states have call predecessors, (18), 8 states have call successors, (18) [2022-12-14 14:21:26,529 WARN L233 SmtUtils]: Spent 6.21s on a formula simplification. DAG size of input: 504 DAG size of output: 406 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 14:21:50,906 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 14:21:50,906 INFO L93 Difference]: Finished difference Result 885 states and 1357 transitions. [2022-12-14 14:21:50,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-12-14 14:21:50,907 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 19 states have (on average 2.4210526315789473) internal successors, (46), 18 states have internal predecessors, (46), 8 states have call successors, (20), 3 states have call predecessors, (20), 3 states have return successors, (18), 8 states have call predecessors, (18), 8 states have call successors, (18) Word has length 93 [2022-12-14 14:21:50,907 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 14:21:50,909 INFO L225 Difference]: With dead ends: 885 [2022-12-14 14:21:50,909 INFO L226 Difference]: Without dead ends: 578 [2022-12-14 14:21:50,910 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 287 GetRequests, 251 SyntacticMatches, 2 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 262 ImplicationChecksByTransitivity, 83.7s TimeCoverageRelationStatistics Valid=169, Invalid=1091, Unknown=0, NotChecked=0, Total=1260 [2022-12-14 14:21:50,910 INFO L413 NwaCegarLoop]: 225 mSDtfsCounter, 248 mSDsluCounter, 3409 mSDsCounter, 0 mSdLazyCounter, 2177 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 248 SdHoareTripleChecker+Valid, 3634 SdHoareTripleChecker+Invalid, 2186 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 2177 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.9s IncrementalHoareTripleChecker+Time [2022-12-14 14:21:50,910 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [248 Valid, 3634 Invalid, 2186 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [9 Valid, 2177 Invalid, 0 Unknown, 0 Unchecked, 6.9s Time] [2022-12-14 14:21:50,911 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 578 states. [2022-12-14 14:21:51,181 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 578 to 527. [2022-12-14 14:21:51,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 527 states, 383 states have (on average 1.475195822454308) internal successors, (565), 388 states have internal predecessors, (565), 111 states have call successors, (111), 33 states have call predecessors, (111), 32 states have return successors, (111), 107 states have call predecessors, (111), 110 states have call successors, (111) [2022-12-14 14:21:51,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 527 states to 527 states and 787 transitions. [2022-12-14 14:21:51,184 INFO L78 Accepts]: Start accepts. Automaton has 527 states and 787 transitions. Word has length 93 [2022-12-14 14:21:51,184 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 14:21:51,184 INFO L495 AbstractCegarLoop]: Abstraction has 527 states and 787 transitions. [2022-12-14 14:21:51,184 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 19 states have (on average 2.4210526315789473) internal successors, (46), 18 states have internal predecessors, (46), 8 states have call successors, (20), 3 states have call predecessors, (20), 3 states have return successors, (18), 8 states have call predecessors, (18), 8 states have call successors, (18) [2022-12-14 14:21:51,184 INFO L276 IsEmpty]: Start isEmpty. Operand 527 states and 787 transitions. [2022-12-14 14:21:51,186 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2022-12-14 14:21:51,186 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 14:21:51,186 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] [2022-12-14 14:21:51,191 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fdce2d9-a550-412e-8593-25fb4c423723/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-12-14 14:21:51,386 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fdce2d9-a550-412e-8593-25fb4c423723/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2022-12-14 14:21:51,387 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 14:21:51,388 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 14:21:51,388 INFO L85 PathProgramCache]: Analyzing trace with hash -1088562706, now seen corresponding path program 1 times [2022-12-14 14:21:51,388 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 14:21:51,388 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1969050808] [2022-12-14 14:21:51,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 14:21:51,389 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 14:21:51,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 14:21:51,495 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 14:21:51,495 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 14:21:51,496 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1969050808] [2022-12-14 14:21:51,496 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1969050808] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 14:21:51,496 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2047142258] [2022-12-14 14:21:51,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 14:21:51,496 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 14:21:51,496 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fdce2d9-a550-412e-8593-25fb4c423723/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 14:21:51,497 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fdce2d9-a550-412e-8593-25fb4c423723/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 14:21:51,498 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fdce2d9-a550-412e-8593-25fb4c423723/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-12-14 14:21:51,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 14:21:51,744 INFO L263 TraceCheckSpWp]: Trace formula consists of 1239 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-14 14:21:51,747 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 14:21:51,762 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 14:21:51,763 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 14:21:51,810 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 14:21:51,810 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2047142258] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 14:21:51,810 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1232188105] [2022-12-14 14:21:51,814 INFO L159 IcfgInterpreter]: Started Sifa with 81 locations of interest [2022-12-14 14:21:51,814 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 14:21:51,815 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 14:21:51,815 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 14:21:51,815 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 14:22:20,196 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 444 for LOIs [2022-12-14 14:22:20,479 INFO L197 IcfgInterpreter]: Interpreting procedure setClientKeyringPublicKey with input of size 238 for LOIs [2022-12-14 14:22:20,542 INFO L197 IcfgInterpreter]: Interpreting procedure setClientKeyringUser with input of size 247 for LOIs [2022-12-14 14:22:20,608 INFO L197 IcfgInterpreter]: Interpreting procedure createClientKeyringEntry with input of size 253 for LOIs [2022-12-14 14:22:20,684 INFO L197 IcfgInterpreter]: Interpreting procedure setClientPrivateKey with input of size 445 for LOIs [2022-12-14 14:22:20,972 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 14:23:00,507 WARN L233 SmtUtils]: Spent 10.11s on a formula simplification. DAG size of input: 623 DAG size of output: 486 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 14:23:13,034 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [1232188105] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 14:23:13,034 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-12-14 14:23:13,034 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [29] imperfect sequences [4, 4, 4] total 35 [2022-12-14 14:23:13,034 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1282391624] [2022-12-14 14:23:13,034 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 14:23:13,035 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2022-12-14 14:23:13,035 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 14:23:13,035 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2022-12-14 14:23:13,035 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=110, Invalid=1080, Unknown=0, NotChecked=0, Total=1190 [2022-12-14 14:23:13,035 INFO L87 Difference]: Start difference. First operand 527 states and 787 transitions. Second operand has 30 states, 19 states have (on average 2.4210526315789473) internal successors, (46), 18 states have internal predecessors, (46), 10 states have call successors, (22), 6 states have call predecessors, (22), 6 states have return successors, (20), 10 states have call predecessors, (20), 10 states have call successors, (20) [2022-12-14 14:23:33,174 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 14:23:33,174 INFO L93 Difference]: Finished difference Result 954 states and 1464 transitions. [2022-12-14 14:23:33,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-12-14 14:23:33,175 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 19 states have (on average 2.4210526315789473) internal successors, (46), 18 states have internal predecessors, (46), 10 states have call successors, (22), 6 states have call predecessors, (22), 6 states have return successors, (20), 10 states have call predecessors, (20), 10 states have call successors, (20) Word has length 96 [2022-12-14 14:23:33,175 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 14:23:33,177 INFO L225 Difference]: With dead ends: 954 [2022-12-14 14:23:33,177 INFO L226 Difference]: Without dead ends: 647 [2022-12-14 14:23:33,178 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 292 GetRequests, 255 SyntacticMatches, 2 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 294 ImplicationChecksByTransitivity, 60.1s TimeCoverageRelationStatistics Valid=128, Invalid=1204, Unknown=0, NotChecked=0, Total=1332 [2022-12-14 14:23:33,179 INFO L413 NwaCegarLoop]: 227 mSDtfsCounter, 136 mSDsluCounter, 3831 mSDsCounter, 0 mSdLazyCounter, 3592 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 136 SdHoareTripleChecker+Valid, 4058 SdHoareTripleChecker+Invalid, 3602 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 3592 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.5s IncrementalHoareTripleChecker+Time [2022-12-14 14:23:33,179 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [136 Valid, 4058 Invalid, 3602 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [10 Valid, 3592 Invalid, 0 Unknown, 0 Unchecked, 11.5s Time] [2022-12-14 14:23:33,179 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 647 states. [2022-12-14 14:23:33,535 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 647 to 594. [2022-12-14 14:23:33,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 594 states, 443 states have (on average 1.4853273137697518) internal successors, (658), 449 states have internal predecessors, (658), 115 states have call successors, (115), 36 states have call predecessors, (115), 35 states have return successors, (115), 110 states have call predecessors, (115), 114 states have call successors, (115) [2022-12-14 14:23:33,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 594 states to 594 states and 888 transitions. [2022-12-14 14:23:33,538 INFO L78 Accepts]: Start accepts. Automaton has 594 states and 888 transitions. Word has length 96 [2022-12-14 14:23:33,538 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 14:23:33,538 INFO L495 AbstractCegarLoop]: Abstraction has 594 states and 888 transitions. [2022-12-14 14:23:33,538 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 19 states have (on average 2.4210526315789473) internal successors, (46), 18 states have internal predecessors, (46), 10 states have call successors, (22), 6 states have call predecessors, (22), 6 states have return successors, (20), 10 states have call predecessors, (20), 10 states have call successors, (20) [2022-12-14 14:23:33,538 INFO L276 IsEmpty]: Start isEmpty. Operand 594 states and 888 transitions. [2022-12-14 14:23:33,540 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2022-12-14 14:23:33,540 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 14:23:33,540 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] [2022-12-14 14:23:33,546 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fdce2d9-a550-412e-8593-25fb4c423723/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-12-14 14:23:33,740 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fdce2d9-a550-412e-8593-25fb4c423723/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 14:23:33,740 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 14:23:33,741 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 14:23:33,741 INFO L85 PathProgramCache]: Analyzing trace with hash 1220747384, now seen corresponding path program 1 times [2022-12-14 14:23:33,741 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 14:23:33,741 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1217278887] [2022-12-14 14:23:33,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 14:23:33,741 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 14:23:33,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 14:23:33,835 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 14:23:33,835 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 14:23:33,835 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1217278887] [2022-12-14 14:23:33,835 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1217278887] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 14:23:33,835 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1302637713] [2022-12-14 14:23:33,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 14:23:33,836 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 14:23:33,836 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fdce2d9-a550-412e-8593-25fb4c423723/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 14:23:33,837 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fdce2d9-a550-412e-8593-25fb4c423723/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 14:23:33,837 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fdce2d9-a550-412e-8593-25fb4c423723/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-12-14 14:23:34,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 14:23:34,038 INFO L263 TraceCheckSpWp]: Trace formula consists of 1156 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-14 14:23:34,041 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 14:23:34,070 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 14:23:34,070 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 14:23:34,128 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 14:23:34,128 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1302637713] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 14:23:34,128 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1796752516] [2022-12-14 14:23:34,131 INFO L159 IcfgInterpreter]: Started Sifa with 76 locations of interest [2022-12-14 14:23:34,131 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 14:23:34,132 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 14:23:34,132 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 14:23:34,132 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 14:24:41,007 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 443 for LOIs [2022-12-14 14:24:41,288 INFO L197 IcfgInterpreter]: Interpreting procedure sendEmail with input of size 479 for LOIs [2022-12-14 14:25:17,242 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailTo with input of size 447 for LOIs [2022-12-14 14:25:17,524 INFO L197 IcfgInterpreter]: Interpreting procedure setClientPrivateKey with input of size 453 for LOIs [2022-12-14 14:25:17,818 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing with input of size 477 for LOIs [2022-12-14 14:25:31,823 INFO L197 IcfgInterpreter]: Interpreting procedure getClientPrivateKey with input of size 435 for LOIs [2022-12-14 14:25:32,084 INFO L197 IcfgInterpreter]: Interpreting procedure findPublicKey with input of size 248 for LOIs [2022-12-14 14:25:32,156 INFO L197 IcfgInterpreter]: Interpreting procedure getEmailTo with input of size 246 for LOIs [2022-12-14 14:25:32,195 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailFrom with input of size 450 for LOIs [2022-12-14 14:25:32,767 INFO L197 IcfgInterpreter]: Interpreting procedure isEncrypted with input of size 250 for LOIs [2022-12-14 14:25:32,808 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 14:26:43,327 WARN L233 SmtUtils]: Spent 6.28s on a formula simplification. DAG size of input: 577 DAG size of output: 444 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 14:28:02,469 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [1796752516] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 14:28:02,469 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-12-14 14:28:02,469 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [57] imperfect sequences [5, 5, 5] total 63 [2022-12-14 14:28:02,470 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1668861911] [2022-12-14 14:28:02,470 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 14:28:02,470 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 58 states [2022-12-14 14:28:02,470 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 14:28:02,471 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2022-12-14 14:28:02,471 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=183, Invalid=3723, Unknown=0, NotChecked=0, Total=3906 [2022-12-14 14:28:02,471 INFO L87 Difference]: Start difference. First operand 594 states and 888 transitions. Second operand has 58 states, 37 states have (on average 1.2702702702702702) internal successors, (47), 35 states have internal predecessors, (47), 18 states have call successors, (20), 11 states have call predecessors, (20), 9 states have return successors, (18), 16 states have call predecessors, (18), 16 states have call successors, (18) [2022-12-14 14:28:15,444 WARN L233 SmtUtils]: Spent 5.15s on a formula simplification. DAG size of input: 523 DAG size of output: 382 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 14:28:21,425 WARN L233 SmtUtils]: Spent 5.65s on a formula simplification. DAG size of input: 527 DAG size of output: 405 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate)