./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/email_spec11_product08.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_2a24738a-9691-4b24-a2f9-020a05aa70d3/bin/utaipan-gh47qXpMRh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a24738a-9691-4b24-a2f9-020a05aa70d3/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_2a24738a-9691-4b24-a2f9-020a05aa70d3/bin/utaipan-gh47qXpMRh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a24738a-9691-4b24-a2f9-020a05aa70d3/bin/utaipan-gh47qXpMRh/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/email_spec11_product08.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a24738a-9691-4b24-a2f9-020a05aa70d3/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_2a24738a-9691-4b24-a2f9-020a05aa70d3/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 25f377b9a54c9ee2ed75c64ae9c58ce8e9d7938b6493e908dfb7e7f7a3cef80e --- 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 08:07:25,860 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-14 08:07:25,861 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-14 08:07:25,873 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-14 08:07:25,873 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-14 08:07:25,874 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-14 08:07:25,875 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-14 08:07:25,876 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-14 08:07:25,876 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-14 08:07:25,877 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-14 08:07:25,877 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-14 08:07:25,878 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-14 08:07:25,878 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-14 08:07:25,879 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-14 08:07:25,880 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-14 08:07:25,880 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-14 08:07:25,881 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-14 08:07:25,881 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-14 08:07:25,882 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-14 08:07:25,883 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-14 08:07:25,884 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-14 08:07:25,885 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-14 08:07:25,885 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-14 08:07:25,886 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-14 08:07:25,888 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-14 08:07:25,888 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-14 08:07:25,888 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-14 08:07:25,889 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-14 08:07:25,889 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-14 08:07:25,889 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-14 08:07:25,890 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-14 08:07:25,890 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-14 08:07:25,890 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-14 08:07:25,891 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-14 08:07:25,891 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-14 08:07:25,892 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-14 08:07:25,892 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-14 08:07:25,892 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-14 08:07:25,892 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-14 08:07:25,893 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-14 08:07:25,893 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-14 08:07:25,894 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a24738a-9691-4b24-a2f9-020a05aa70d3/bin/utaipan-gh47qXpMRh/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-12-14 08:07:25,909 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-14 08:07:25,909 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-14 08:07:25,909 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-14 08:07:25,910 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-14 08:07:25,910 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-14 08:07:25,910 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-14 08:07:25,910 INFO L138 SettingsManager]: * User list type=DISABLED [2022-12-14 08:07:25,910 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-12-14 08:07:25,910 INFO L138 SettingsManager]: * Explicit value domain=true [2022-12-14 08:07:25,910 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-12-14 08:07:25,920 INFO L138 SettingsManager]: * Octagon Domain=false [2022-12-14 08:07:25,921 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-12-14 08:07:25,921 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-12-14 08:07:25,921 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-12-14 08:07:25,921 INFO L138 SettingsManager]: * Interval Domain=false [2022-12-14 08:07:25,921 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-12-14 08:07:25,921 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-12-14 08:07:25,921 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-12-14 08:07:25,922 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-14 08:07:25,922 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-14 08:07:25,922 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-14 08:07:25,922 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-14 08:07:25,922 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-14 08:07:25,923 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-14 08:07:25,923 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-14 08:07:25,923 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-14 08:07:25,923 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-14 08:07:25,923 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-14 08:07:25,923 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-14 08:07:25,923 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-14 08:07:25,923 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-14 08:07:25,924 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-14 08:07:25,924 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 08:07:25,924 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-14 08:07:25,924 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-12-14 08:07:25,924 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-14 08:07:25,924 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-14 08:07:25,924 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-12-14 08:07:25,924 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-14 08:07:25,925 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-14 08:07:25,925 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-12-14 08:07:25,925 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_2a24738a-9691-4b24-a2f9-020a05aa70d3/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a24738a-9691-4b24-a2f9-020a05aa70d3/bin/utaipan-gh47qXpMRh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 25f377b9a54c9ee2ed75c64ae9c58ce8e9d7938b6493e908dfb7e7f7a3cef80e [2022-12-14 08:07:26,088 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-14 08:07:26,104 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-14 08:07:26,106 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-14 08:07:26,107 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-14 08:07:26,107 INFO L275 PluginConnector]: CDTParser initialized [2022-12-14 08:07:26,108 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a24738a-9691-4b24-a2f9-020a05aa70d3/bin/utaipan-gh47qXpMRh/../../sv-benchmarks/c/product-lines/email_spec11_product08.cil.c [2022-12-14 08:07:28,639 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-14 08:07:28,855 INFO L351 CDTParser]: Found 1 translation units. [2022-12-14 08:07:28,856 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a24738a-9691-4b24-a2f9-020a05aa70d3/sv-benchmarks/c/product-lines/email_spec11_product08.cil.c [2022-12-14 08:07:28,868 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a24738a-9691-4b24-a2f9-020a05aa70d3/bin/utaipan-gh47qXpMRh/data/cf63eb259/d26e3c85de9041278f07c171f96d388e/FLAGb89483306 [2022-12-14 08:07:29,216 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a24738a-9691-4b24-a2f9-020a05aa70d3/bin/utaipan-gh47qXpMRh/data/cf63eb259/d26e3c85de9041278f07c171f96d388e [2022-12-14 08:07:29,218 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-14 08:07:29,219 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-14 08:07:29,220 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-14 08:07:29,221 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-14 08:07:29,224 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-14 08:07:29,225 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 08:07:29" (1/1) ... [2022-12-14 08:07:29,226 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@20a89fc7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 08:07:29, skipping insertion in model container [2022-12-14 08:07:29,226 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 08:07:29" (1/1) ... [2022-12-14 08:07:29,233 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-14 08:07:29,273 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-14 08:07:29,421 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 08:07:29,425 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 08:07:29,429 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 08:07:29,510 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 08:07:29,511 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 08:07:29,518 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 08:07:29,583 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_2a24738a-9691-4b24-a2f9-020a05aa70d3/sv-benchmarks/c/product-lines/email_spec11_product08.cil.c[54831,54844] [2022-12-14 08:07:29,586 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 08:07:29,591 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 08:07:29,600 INFO L203 MainTranslator]: Completed pre-run [2022-12-14 08:07:29,611 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 08:07:29,612 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 08:07:29,614 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 08:07:29,636 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 08:07:29,637 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 08:07:29,639 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 08:07:29,660 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_2a24738a-9691-4b24-a2f9-020a05aa70d3/sv-benchmarks/c/product-lines/email_spec11_product08.cil.c[54831,54844] [2022-12-14 08:07:29,660 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 08:07:29,663 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 08:07:29,681 INFO L208 MainTranslator]: Completed translation [2022-12-14 08:07:29,682 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 08:07:29 WrapperNode [2022-12-14 08:07:29,682 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-14 08:07:29,683 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-14 08:07:29,683 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-14 08:07:29,683 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-14 08:07:29,688 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 08:07:29" (1/1) ... [2022-12-14 08:07:29,704 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 08:07:29" (1/1) ... [2022-12-14 08:07:29,730 INFO L138 Inliner]: procedures = 121, calls = 176, calls flagged for inlining = 46, calls inlined = 40, statements flattened = 735 [2022-12-14 08:07:29,731 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-14 08:07:29,731 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-14 08:07:29,731 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-14 08:07:29,731 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-14 08:07:29,738 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 08:07:29" (1/1) ... [2022-12-14 08:07:29,739 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 08:07:29" (1/1) ... [2022-12-14 08:07:29,741 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 08:07:29" (1/1) ... [2022-12-14 08:07:29,742 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 08:07:29" (1/1) ... [2022-12-14 08:07:29,759 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 08:07:29" (1/1) ... [2022-12-14 08:07:29,763 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 08:07:29" (1/1) ... [2022-12-14 08:07:29,765 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 08:07:29" (1/1) ... [2022-12-14 08:07:29,767 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 08:07:29" (1/1) ... [2022-12-14 08:07:29,770 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-14 08:07:29,770 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-14 08:07:29,770 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-14 08:07:29,770 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-14 08:07:29,771 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 08:07:29" (1/1) ... [2022-12-14 08:07:29,775 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 08:07:29,784 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a24738a-9691-4b24-a2f9-020a05aa70d3/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 08:07:29,794 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a24738a-9691-4b24-a2f9-020a05aa70d3/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-14 08:07:29,796 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a24738a-9691-4b24-a2f9-020a05aa70d3/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-14 08:07:29,829 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2022-12-14 08:07:29,829 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2022-12-14 08:07:29,829 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2022-12-14 08:07:29,829 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2022-12-14 08:07:29,829 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable [2022-12-14 08:07:29,829 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable [2022-12-14 08:07:29,829 INFO L130 BoogieDeclarations]: Found specification of procedure createClientKeyringEntry [2022-12-14 08:07:29,829 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientKeyringEntry [2022-12-14 08:07:29,830 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAdd [2022-12-14 08:07:29,830 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAdd [2022-12-14 08:07:29,830 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2022-12-14 08:07:29,830 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailFrom [2022-12-14 08:07:29,830 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailFrom [2022-12-14 08:07:29,830 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2022-12-14 08:07:29,830 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2022-12-14 08:07:29,830 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-14 08:07:29,830 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringUser [2022-12-14 08:07:29,830 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringUser [2022-12-14 08:07:29,831 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringPublicKey [2022-12-14 08:07:29,831 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringPublicKey [2022-12-14 08:07:29,831 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2022-12-14 08:07:29,831 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2022-12-14 08:07:29,831 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2022-12-14 08:07:29,831 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2022-12-14 08:07:29,831 INFO L130 BoogieDeclarations]: Found specification of procedure setClientPrivateKey [2022-12-14 08:07:29,831 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientPrivateKey [2022-12-14 08:07:29,831 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailTo [2022-12-14 08:07:29,831 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailTo [2022-12-14 08:07:29,831 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-14 08:07:29,832 INFO L130 BoogieDeclarations]: Found specification of procedure generateKeyPair [2022-12-14 08:07:29,832 INFO L138 BoogieDeclarations]: Found implementation of procedure generateKeyPair [2022-12-14 08:07:29,832 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-14 08:07:29,832 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-14 08:07:29,963 INFO L235 CfgBuilder]: Building ICFG [2022-12-14 08:07:29,965 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-14 08:07:30,345 INFO L276 CfgBuilder]: Performing block encoding [2022-12-14 08:07:30,563 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-14 08:07:30,563 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-12-14 08:07:30,565 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 08:07:30 BoogieIcfgContainer [2022-12-14 08:07:30,565 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-14 08:07:30,567 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-14 08:07:30,567 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-14 08:07:30,569 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-14 08:07:30,570 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.12 08:07:29" (1/3) ... [2022-12-14 08:07:30,570 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@603e155d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 08:07:30, skipping insertion in model container [2022-12-14 08:07:30,570 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 08:07:29" (2/3) ... [2022-12-14 08:07:30,570 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@603e155d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 08:07:30, skipping insertion in model container [2022-12-14 08:07:30,570 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 08:07:30" (3/3) ... [2022-12-14 08:07:30,571 INFO L112 eAbstractionObserver]: Analyzing ICFG email_spec11_product08.cil.c [2022-12-14 08:07:30,585 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-14 08:07:30,585 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-12-14 08:07:30,621 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-14 08:07:30,625 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;@7374aa4d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-14 08:07:30,625 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-12-14 08:07:30,630 INFO L276 IsEmpty]: Start isEmpty. Operand has 126 states, 76 states have (on average 1.381578947368421) internal successors, (105), 78 states have internal predecessors, (105), 34 states have call successors, (34), 14 states have call predecessors, (34), 14 states have return successors, (34), 34 states have call predecessors, (34), 34 states have call successors, (34) [2022-12-14 08:07:30,639 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2022-12-14 08:07:30,640 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 08:07:30,640 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 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] [2022-12-14 08:07:30,641 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 08:07:30,645 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 08:07:30,646 INFO L85 PathProgramCache]: Analyzing trace with hash 711768805, now seen corresponding path program 1 times [2022-12-14 08:07:30,655 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 08:07:30,655 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1506461140] [2022-12-14 08:07:30,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 08:07:30,656 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 08:07:30,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 08:07:30,875 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-12-14 08:07:30,876 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 08:07:30,876 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1506461140] [2022-12-14 08:07:30,876 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1506461140] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 08:07:30,877 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 08:07:30,877 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-14 08:07:30,878 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1808555694] [2022-12-14 08:07:30,878 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 08:07:30,881 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-12-14 08:07:30,881 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 08:07:30,901 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-12-14 08:07:30,902 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-12-14 08:07:30,903 INFO L87 Difference]: Start difference. First operand has 126 states, 76 states have (on average 1.381578947368421) internal successors, (105), 78 states have internal predecessors, (105), 34 states have call successors, (34), 14 states have call predecessors, (34), 14 states have return successors, (34), 34 states have call predecessors, (34), 34 states have call successors, (34) Second operand has 2 states, 2 states have (on average 12.5) internal successors, (25), 2 states have internal predecessors, (25), 2 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-12-14 08:07:30,972 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 08:07:30,972 INFO L93 Difference]: Finished difference Result 169 states and 224 transitions. [2022-12-14 08:07:30,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-12-14 08:07:30,975 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 12.5) internal successors, (25), 2 states have internal predecessors, (25), 2 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 54 [2022-12-14 08:07:30,975 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 08:07:30,983 INFO L225 Difference]: With dead ends: 169 [2022-12-14 08:07:30,983 INFO L226 Difference]: Without dead ends: 123 [2022-12-14 08:07:30,986 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 08:07:30,990 INFO L413 NwaCegarLoop]: 147 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 147 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 08:07:30,990 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 147 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 08:07:31,006 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2022-12-14 08:07:31,029 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 123. [2022-12-14 08:07:31,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 123 states, 74 states have (on average 1.337837837837838) internal successors, (99), 75 states have internal predecessors, (99), 34 states have call successors, (34), 14 states have call predecessors, (34), 14 states have return successors, (33), 33 states have call predecessors, (33), 33 states have call successors, (33) [2022-12-14 08:07:31,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 166 transitions. [2022-12-14 08:07:31,033 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 166 transitions. Word has length 54 [2022-12-14 08:07:31,035 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 08:07:31,035 INFO L495 AbstractCegarLoop]: Abstraction has 123 states and 166 transitions. [2022-12-14 08:07:31,035 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 12.5) internal successors, (25), 2 states have internal predecessors, (25), 2 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-12-14 08:07:31,035 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 166 transitions. [2022-12-14 08:07:31,038 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2022-12-14 08:07:31,038 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 08:07:31,038 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 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] [2022-12-14 08:07:31,039 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-14 08:07:31,039 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 08:07:31,039 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 08:07:31,040 INFO L85 PathProgramCache]: Analyzing trace with hash 26796296, now seen corresponding path program 1 times [2022-12-14 08:07:31,040 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 08:07:31,040 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1088663847] [2022-12-14 08:07:31,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 08:07:31,040 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 08:07:31,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 08:07:31,172 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-12-14 08:07:31,173 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 08:07:31,173 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1088663847] [2022-12-14 08:07:31,173 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1088663847] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 08:07:31,173 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 08:07:31,173 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 08:07:31,173 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1742848800] [2022-12-14 08:07:31,174 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 08:07:31,175 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 08:07:31,175 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 08:07:31,176 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 08:07:31,176 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 08:07:31,176 INFO L87 Difference]: Start difference. First operand 123 states and 166 transitions. Second operand has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 2 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-12-14 08:07:31,249 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 08:07:31,250 INFO L93 Difference]: Finished difference Result 165 states and 212 transitions. [2022-12-14 08:07:31,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 08:07:31,250 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 2 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 55 [2022-12-14 08:07:31,251 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 08:07:31,252 INFO L225 Difference]: With dead ends: 165 [2022-12-14 08:07:31,252 INFO L226 Difference]: Without dead ends: 125 [2022-12-14 08:07:31,253 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 08:07:31,254 INFO L413 NwaCegarLoop]: 144 mSDtfsCounter, 0 mSDsluCounter, 143 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 287 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 08:07:31,254 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 287 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 08:07:31,255 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2022-12-14 08:07:31,265 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 125. [2022-12-14 08:07:31,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 125 states, 76 states have (on average 1.3289473684210527) internal successors, (101), 77 states have internal predecessors, (101), 34 states have call successors, (34), 14 states have call predecessors, (34), 14 states have return successors, (33), 33 states have call predecessors, (33), 33 states have call successors, (33) [2022-12-14 08:07:31,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 168 transitions. [2022-12-14 08:07:31,268 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 168 transitions. Word has length 55 [2022-12-14 08:07:31,268 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 08:07:31,268 INFO L495 AbstractCegarLoop]: Abstraction has 125 states and 168 transitions. [2022-12-14 08:07:31,269 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 2 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-12-14 08:07:31,269 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 168 transitions. [2022-12-14 08:07:31,271 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2022-12-14 08:07:31,271 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 08:07:31,271 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 08:07:31,271 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-14 08:07:31,271 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 08:07:31,272 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 08:07:31,272 INFO L85 PathProgramCache]: Analyzing trace with hash -370171383, now seen corresponding path program 1 times [2022-12-14 08:07:31,272 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 08:07:31,272 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1212866961] [2022-12-14 08:07:31,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 08:07:31,273 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 08:07:31,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 08:07:31,363 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-12-14 08:07:31,363 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 08:07:31,363 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1212866961] [2022-12-14 08:07:31,364 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1212866961] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 08:07:31,364 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 08:07:31,364 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 08:07:31,364 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [655437443] [2022-12-14 08:07:31,364 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 08:07:31,377 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 08:07:31,377 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 08:07:31,377 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 08:07:31,377 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 08:07:31,378 INFO L87 Difference]: Start difference. First operand 125 states and 168 transitions. Second operand has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 2 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-12-14 08:07:31,447 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 08:07:31,447 INFO L93 Difference]: Finished difference Result 280 states and 395 transitions. [2022-12-14 08:07:31,448 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 08:07:31,448 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 2 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 60 [2022-12-14 08:07:31,448 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 08:07:31,449 INFO L225 Difference]: With dead ends: 280 [2022-12-14 08:07:31,449 INFO L226 Difference]: Without dead ends: 173 [2022-12-14 08:07:31,450 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 08:07:31,451 INFO L413 NwaCegarLoop]: 161 mSDtfsCounter, 57 mSDsluCounter, 138 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 299 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 08:07:31,451 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [72 Valid, 299 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 08:07:31,452 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 173 states. [2022-12-14 08:07:31,461 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 173 to 168. [2022-12-14 08:07:31,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 168 states, 108 states have (on average 1.4259259259259258) internal successors, (154), 109 states have internal predecessors, (154), 45 states have call successors, (45), 14 states have call predecessors, (45), 14 states have return successors, (44), 44 states have call predecessors, (44), 44 states have call successors, (44) [2022-12-14 08:07:31,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 168 states to 168 states and 243 transitions. [2022-12-14 08:07:31,463 INFO L78 Accepts]: Start accepts. Automaton has 168 states and 243 transitions. Word has length 60 [2022-12-14 08:07:31,463 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 08:07:31,463 INFO L495 AbstractCegarLoop]: Abstraction has 168 states and 243 transitions. [2022-12-14 08:07:31,463 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 2 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-12-14 08:07:31,464 INFO L276 IsEmpty]: Start isEmpty. Operand 168 states and 243 transitions. [2022-12-14 08:07:31,465 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2022-12-14 08:07:31,465 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 08:07:31,465 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 08:07:31,465 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-12-14 08:07:31,466 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 08:07:31,466 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 08:07:31,466 INFO L85 PathProgramCache]: Analyzing trace with hash -1189066188, now seen corresponding path program 1 times [2022-12-14 08:07:31,466 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 08:07:31,466 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [344908819] [2022-12-14 08:07:31,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 08:07:31,467 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 08:07:31,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 08:07:31,572 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-12-14 08:07:31,572 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 08:07:31,572 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [344908819] [2022-12-14 08:07:31,572 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [344908819] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 08:07:31,573 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [406884421] [2022-12-14 08:07:31,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 08:07:31,573 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 08:07:31,573 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a24738a-9691-4b24-a2f9-020a05aa70d3/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 08:07:31,574 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a24738a-9691-4b24-a2f9-020a05aa70d3/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 08:07:31,575 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a24738a-9691-4b24-a2f9-020a05aa70d3/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-12-14 08:07:31,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 08:07:31,769 INFO L263 TraceCheckSpWp]: Trace formula consists of 890 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-14 08:07:31,775 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 08:07:31,825 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-12-14 08:07:31,825 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 08:07:31,882 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-12-14 08:07:31,882 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [406884421] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 08:07:31,882 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [646491440] [2022-12-14 08:07:31,901 INFO L159 IcfgInterpreter]: Started Sifa with 50 locations of interest [2022-12-14 08:07:31,901 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 08:07:31,905 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 08:07:31,910 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 08:07:31,911 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 08:07:51,906 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 444 for LOIs [2022-12-14 08:07:52,187 INFO L197 IcfgInterpreter]: Interpreting procedure setClientPrivateKey with input of size 441 for LOIs [2022-12-14 08:07:52,459 INFO L197 IcfgInterpreter]: Interpreting procedure sendEmail with input of size 246 for LOIs [2022-12-14 08:07:53,833 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailTo with input of size 236 for LOIs [2022-12-14 08:07:53,870 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing with input of size 248 for LOIs [2022-12-14 08:07:56,721 INFO L197 IcfgInterpreter]: Interpreting procedure isReadable with input of size 242 for LOIs [2022-12-14 08:07:56,751 INFO L197 IcfgInterpreter]: Interpreting procedure getEmailTo with input of size 239 for LOIs [2022-12-14 08:07:56,785 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailFrom with input of size 469 for LOIs [2022-12-14 08:08:01,040 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 08:09:07,000 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [646491440] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 08:09:07,000 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-12-14 08:09:07,000 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [43] imperfect sequences [4, 4, 4] total 49 [2022-12-14 08:09:07,001 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1649288810] [2022-12-14 08:09:07,001 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 08:09:07,001 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2022-12-14 08:09:07,001 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 08:09:07,002 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2022-12-14 08:09:07,002 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=137, Invalid=2215, Unknown=0, NotChecked=0, Total=2352 [2022-12-14 08:09:07,003 INFO L87 Difference]: Start difference. First operand 168 states and 243 transitions. Second operand has 44 states, 29 states have (on average 1.0689655172413792) internal successors, (31), 27 states have internal predecessors, (31), 13 states have call successors, (13), 8 states have call predecessors, (13), 6 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2022-12-14 08:09:38,301 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 08:09:38,301 INFO L93 Difference]: Finished difference Result 504 states and 799 transitions. [2022-12-14 08:09:38,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-12-14 08:09:38,302 INFO L78 Accepts]: Start accepts. Automaton has has 44 states, 29 states have (on average 1.0689655172413792) internal successors, (31), 27 states have internal predecessors, (31), 13 states have call successors, (13), 8 states have call predecessors, (13), 6 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) Word has length 61 [2022-12-14 08:09:38,302 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 08:09:38,304 INFO L225 Difference]: With dead ends: 504 [2022-12-14 08:09:38,305 INFO L226 Difference]: Without dead ends: 354 [2022-12-14 08:09:38,306 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 193 GetRequests, 138 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 676 ImplicationChecksByTransitivity, 82.7s TimeCoverageRelationStatistics Valid=198, Invalid=2994, Unknown=0, NotChecked=0, Total=3192 [2022-12-14 08:09:38,307 INFO L413 NwaCegarLoop]: 203 mSDtfsCounter, 267 mSDsluCounter, 3557 mSDsCounter, 0 mSdLazyCounter, 5017 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 268 SdHoareTripleChecker+Valid, 3760 SdHoareTripleChecker+Invalid, 5045 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 5017 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14.1s IncrementalHoareTripleChecker+Time [2022-12-14 08:09:38,307 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [268 Valid, 3760 Invalid, 5045 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [28 Valid, 5017 Invalid, 0 Unknown, 0 Unchecked, 14.1s Time] [2022-12-14 08:09:38,308 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 354 states. [2022-12-14 08:09:38,447 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 354 to 259. [2022-12-14 08:09:38,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 259 states, 186 states have (on average 1.4838709677419355) internal successors, (276), 188 states have internal predecessors, (276), 52 states have call successors, (52), 21 states have call predecessors, (52), 20 states have return successors, (52), 49 states have call predecessors, (52), 51 states have call successors, (52) [2022-12-14 08:09:38,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 259 states to 259 states and 380 transitions. [2022-12-14 08:09:38,448 INFO L78 Accepts]: Start accepts. Automaton has 259 states and 380 transitions. Word has length 61 [2022-12-14 08:09:38,449 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 08:09:38,449 INFO L495 AbstractCegarLoop]: Abstraction has 259 states and 380 transitions. [2022-12-14 08:09:38,449 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 44 states, 29 states have (on average 1.0689655172413792) internal successors, (31), 27 states have internal predecessors, (31), 13 states have call successors, (13), 8 states have call predecessors, (13), 6 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2022-12-14 08:09:38,449 INFO L276 IsEmpty]: Start isEmpty. Operand 259 states and 380 transitions. [2022-12-14 08:09:38,451 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-12-14 08:09:38,451 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 08:09:38,451 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 08:09:38,457 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a24738a-9691-4b24-a2f9-020a05aa70d3/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-12-14 08:09:38,651 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a24738a-9691-4b24-a2f9-020a05aa70d3/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 08:09:38,653 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 08:09:38,654 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 08:09:38,654 INFO L85 PathProgramCache]: Analyzing trace with hash -269988423, now seen corresponding path program 1 times [2022-12-14 08:09:38,654 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 08:09:38,655 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [630887345] [2022-12-14 08:09:38,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 08:09:38,656 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 08:09:38,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 08:09:38,739 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-12-14 08:09:38,739 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 08:09:38,739 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [630887345] [2022-12-14 08:09:38,739 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [630887345] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 08:09:38,739 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 08:09:38,739 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 08:09:38,740 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1520274522] [2022-12-14 08:09:38,740 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 08:09:38,740 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 08:09:38,740 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 08:09:38,741 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 08:09:38,741 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 08:09:38,741 INFO L87 Difference]: Start difference. First operand 259 states and 380 transitions. Second operand has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 2 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-12-14 08:09:38,958 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 08:09:38,958 INFO L93 Difference]: Finished difference Result 591 states and 894 transitions. [2022-12-14 08:09:38,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 08:09:38,959 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 2 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 66 [2022-12-14 08:09:38,959 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 08:09:38,960 INFO L225 Difference]: With dead ends: 591 [2022-12-14 08:09:38,961 INFO L226 Difference]: Without dead ends: 374 [2022-12-14 08:09:38,961 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 08:09:38,962 INFO L413 NwaCegarLoop]: 169 mSDtfsCounter, 55 mSDsluCounter, 145 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 70 SdHoareTripleChecker+Valid, 314 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 08:09:38,963 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [70 Valid, 314 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 08:09:38,964 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 374 states. [2022-12-14 08:09:39,110 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 374 to 367. [2022-12-14 08:09:39,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 367 states, 269 states have (on average 1.5092936802973977) internal successors, (406), 271 states have internal predecessors, (406), 77 states have call successors, (77), 21 states have call predecessors, (77), 20 states have return successors, (77), 74 states have call predecessors, (77), 76 states have call successors, (77) [2022-12-14 08:09:39,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 367 states to 367 states and 560 transitions. [2022-12-14 08:09:39,114 INFO L78 Accepts]: Start accepts. Automaton has 367 states and 560 transitions. Word has length 66 [2022-12-14 08:09:39,115 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 08:09:39,115 INFO L495 AbstractCegarLoop]: Abstraction has 367 states and 560 transitions. [2022-12-14 08:09:39,115 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 2 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-12-14 08:09:39,115 INFO L276 IsEmpty]: Start isEmpty. Operand 367 states and 560 transitions. [2022-12-14 08:09:39,119 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-12-14 08:09:39,119 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 08:09:39,120 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 08:09:39,120 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-12-14 08:09:39,120 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 08:09:39,120 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 08:09:39,120 INFO L85 PathProgramCache]: Analyzing trace with hash 833403073, now seen corresponding path program 1 times [2022-12-14 08:09:39,121 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 08:09:39,121 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [162112947] [2022-12-14 08:09:39,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 08:09:39,121 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 08:09:39,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 08:09:39,240 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-12-14 08:09:39,241 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 08:09:39,241 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [162112947] [2022-12-14 08:09:39,241 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [162112947] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 08:09:39,241 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1625979445] [2022-12-14 08:09:39,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 08:09:39,241 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 08:09:39,242 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a24738a-9691-4b24-a2f9-020a05aa70d3/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 08:09:39,242 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a24738a-9691-4b24-a2f9-020a05aa70d3/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 08:09:39,243 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a24738a-9691-4b24-a2f9-020a05aa70d3/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-12-14 08:09:39,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 08:09:39,411 INFO L263 TraceCheckSpWp]: Trace formula consists of 911 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-14 08:09:39,416 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 08:09:39,434 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-12-14 08:09:39,434 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 08:09:39,475 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-12-14 08:09:39,475 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1625979445] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 08:09:39,475 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1144177375] [2022-12-14 08:09:39,479 INFO L159 IcfgInterpreter]: Started Sifa with 54 locations of interest [2022-12-14 08:09:39,479 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 08:09:39,480 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 08:09:39,480 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 08:09:39,480 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 08:10:19,241 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 440 for LOIs [2022-12-14 08:10:19,737 INFO L197 IcfgInterpreter]: Interpreting procedure setClientPrivateKey with input of size 450 for LOIs [2022-12-14 08:10:20,021 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 08:11:02,198 WARN L233 SmtUtils]: Spent 6.90s on a formula simplification. DAG size of input: 583 DAG size of output: 349 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 08:11:19,181 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [1144177375] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 08:11:19,181 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-12-14 08:11:19,181 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [24] imperfect sequences [4, 4, 4] total 30 [2022-12-14 08:11:19,182 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1712463628] [2022-12-14 08:11:19,182 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 08:11:19,182 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-12-14 08:11:19,182 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 08:11:19,183 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-12-14 08:11:19,183 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=110, Invalid=760, Unknown=0, NotChecked=0, Total=870 [2022-12-14 08:11:19,183 INFO L87 Difference]: Start difference. First operand 367 states and 560 transitions. Second operand has 25 states, 19 states have (on average 1.7894736842105263) internal successors, (34), 18 states have internal predecessors, (34), 8 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (12), 8 states have call predecessors, (12), 8 states have call successors, (12) [2022-12-14 08:11:41,211 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 08:11:41,211 INFO L93 Difference]: Finished difference Result 714 states and 1131 transitions. [2022-12-14 08:11:41,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-12-14 08:11:41,212 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 19 states have (on average 1.7894736842105263) internal successors, (34), 18 states have internal predecessors, (34), 8 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (12), 8 states have call predecessors, (12), 8 states have call successors, (12) Word has length 67 [2022-12-14 08:11:41,212 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 08:11:41,214 INFO L225 Difference]: With dead ends: 714 [2022-12-14 08:11:41,214 INFO L226 Difference]: Without dead ends: 474 [2022-12-14 08:11:41,215 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 209 GetRequests, 173 SyntacticMatches, 2 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 262 ImplicationChecksByTransitivity, 74.1s TimeCoverageRelationStatistics Valid=169, Invalid=1091, Unknown=0, NotChecked=0, Total=1260 [2022-12-14 08:11:41,216 INFO L413 NwaCegarLoop]: 158 mSDtfsCounter, 200 mSDsluCounter, 2152 mSDsCounter, 0 mSdLazyCounter, 2147 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 200 SdHoareTripleChecker+Valid, 2310 SdHoareTripleChecker+Invalid, 2156 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 2147 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.7s IncrementalHoareTripleChecker+Time [2022-12-14 08:11:41,217 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [200 Valid, 2310 Invalid, 2156 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [9 Valid, 2147 Invalid, 0 Unknown, 0 Unchecked, 6.7s Time] [2022-12-14 08:11:41,218 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 474 states. [2022-12-14 08:11:41,458 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 474 to 423. [2022-12-14 08:11:41,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 423 states, 322 states have (on average 1.5217391304347827) internal successors, (490), 325 states have internal predecessors, (490), 79 states have call successors, (79), 22 states have call predecessors, (79), 21 states have return successors, (79), 75 states have call predecessors, (79), 78 states have call successors, (79) [2022-12-14 08:11:41,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 423 states to 423 states and 648 transitions. [2022-12-14 08:11:41,460 INFO L78 Accepts]: Start accepts. Automaton has 423 states and 648 transitions. Word has length 67 [2022-12-14 08:11:41,460 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 08:11:41,460 INFO L495 AbstractCegarLoop]: Abstraction has 423 states and 648 transitions. [2022-12-14 08:11:41,461 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 19 states have (on average 1.7894736842105263) internal successors, (34), 18 states have internal predecessors, (34), 8 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (12), 8 states have call predecessors, (12), 8 states have call successors, (12) [2022-12-14 08:11:41,461 INFO L276 IsEmpty]: Start isEmpty. Operand 423 states and 648 transitions. [2022-12-14 08:11:41,462 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-12-14 08:11:41,462 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 08:11:41,462 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 08:11:41,469 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a24738a-9691-4b24-a2f9-020a05aa70d3/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-12-14 08:11:41,662 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a24738a-9691-4b24-a2f9-020a05aa70d3/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 08:11:41,664 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 08:11:41,664 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 08:11:41,665 INFO L85 PathProgramCache]: Analyzing trace with hash -1004767367, now seen corresponding path program 1 times [2022-12-14 08:11:41,665 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 08:11:41,665 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [654834534] [2022-12-14 08:11:41,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 08:11:41,666 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 08:11:41,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 08:11:41,778 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-12-14 08:11:41,779 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 08:11:41,779 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [654834534] [2022-12-14 08:11:41,779 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [654834534] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 08:11:41,779 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [735893094] [2022-12-14 08:11:41,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 08:11:41,779 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 08:11:41,779 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a24738a-9691-4b24-a2f9-020a05aa70d3/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 08:11:41,780 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a24738a-9691-4b24-a2f9-020a05aa70d3/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 08:11:41,781 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a24738a-9691-4b24-a2f9-020a05aa70d3/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-12-14 08:11:41,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 08:11:41,946 INFO L263 TraceCheckSpWp]: Trace formula consists of 1017 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-14 08:11:41,950 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 08:11:41,964 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-12-14 08:11:41,965 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 08:11:42,004 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-12-14 08:11:42,004 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [735893094] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 08:11:42,004 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1010210362] [2022-12-14 08:11:42,006 INFO L159 IcfgInterpreter]: Started Sifa with 59 locations of interest [2022-12-14 08:11:42,006 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 08:11:42,007 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 08:11:42,007 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 08:11:42,007 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 08:12:42,355 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 444 for LOIs [2022-12-14 08:12:42,634 INFO L197 IcfgInterpreter]: Interpreting procedure setClientKeyringPublicKey with input of size 418 for LOIs [2022-12-14 08:12:42,899 INFO L197 IcfgInterpreter]: Interpreting procedure createClientKeyringEntry with input of size 211 for LOIs [2022-12-14 08:12:42,953 INFO L197 IcfgInterpreter]: Interpreting procedure setClientPrivateKey with input of size 441 for LOIs [2022-12-14 08:12:43,228 INFO L197 IcfgInterpreter]: Interpreting procedure setClientKeyringUser with input of size 415 for LOIs [2022-12-14 08:12:43,490 INFO L197 IcfgInterpreter]: Interpreting procedure sendEmail with input of size 218 for LOIs [2022-12-14 08:12:44,503 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailTo with input of size 208 for LOIs [2022-12-14 08:12:44,533 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing with input of size 218 for LOIs [2022-12-14 08:12:45,888 INFO L197 IcfgInterpreter]: Interpreting procedure getEmailTo with input of size 211 for LOIs [2022-12-14 08:12:45,917 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailFrom with input of size 417 for LOIs [2022-12-14 08:12:47,202 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 08:13:49,708 WARN L233 SmtUtils]: Spent 5.71s on a formula simplification. DAG size of input: 530 DAG size of output: 353 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 08:13:57,567 WARN L233 SmtUtils]: Spent 5.84s on a formula simplification. DAG size of input: 417 DAG size of output: 319 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 08:14:13,077 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [1010210362] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 08:14:13,077 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-12-14 08:14:13,078 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [47] imperfect sequences [4, 4, 4] total 53 [2022-12-14 08:14:13,078 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1086336144] [2022-12-14 08:14:13,078 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 08:14:13,078 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2022-12-14 08:14:13,078 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 08:14:13,079 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2022-12-14 08:14:13,079 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=153, Invalid=2603, Unknown=0, NotChecked=0, Total=2756 [2022-12-14 08:14:13,079 INFO L87 Difference]: Start difference. First operand 423 states and 648 transitions. Second operand has 48 states, 29 states have (on average 1.1724137931034482) internal successors, (34), 27 states have internal predecessors, (34), 16 states have call successors, (16), 11 states have call predecessors, (16), 9 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) [2022-12-14 08:14:35,751 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 08:14:35,751 INFO L93 Difference]: Finished difference Result 816 states and 1271 transitions. [2022-12-14 08:14:35,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2022-12-14 08:14:35,752 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 29 states have (on average 1.1724137931034482) internal successors, (34), 27 states have internal predecessors, (34), 16 states have call successors, (16), 11 states have call predecessors, (16), 9 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) Word has length 70 [2022-12-14 08:14:35,752 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 08:14:35,754 INFO L225 Difference]: With dead ends: 816 [2022-12-14 08:14:35,754 INFO L226 Difference]: Without dead ends: 571 [2022-12-14 08:14:35,755 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 217 GetRequests, 161 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 685 ImplicationChecksByTransitivity, 95.6s TimeCoverageRelationStatistics Valid=187, Invalid=3119, Unknown=0, NotChecked=0, Total=3306 [2022-12-14 08:14:35,755 INFO L413 NwaCegarLoop]: 173 mSDtfsCounter, 275 mSDsluCounter, 3112 mSDsCounter, 0 mSdLazyCounter, 4880 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 279 SdHoareTripleChecker+Valid, 3285 SdHoareTripleChecker+Invalid, 4911 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 4880 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.3s IncrementalHoareTripleChecker+Time [2022-12-14 08:14:35,755 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [279 Valid, 3285 Invalid, 4911 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [31 Valid, 4880 Invalid, 0 Unknown, 0 Unchecked, 12.3s Time] [2022-12-14 08:14:35,756 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 571 states. [2022-12-14 08:14:36,041 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 571 to 500. [2022-12-14 08:14:36,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 500 states, 382 states have (on average 1.5) internal successors, (573), 387 states have internal predecessors, (573), 89 states have call successors, (89), 30 states have call predecessors, (89), 28 states have return successors, (89), 82 states have call predecessors, (89), 88 states have call successors, (89) [2022-12-14 08:14:36,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 500 states to 500 states and 751 transitions. [2022-12-14 08:14:36,043 INFO L78 Accepts]: Start accepts. Automaton has 500 states and 751 transitions. Word has length 70 [2022-12-14 08:14:36,044 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 08:14:36,044 INFO L495 AbstractCegarLoop]: Abstraction has 500 states and 751 transitions. [2022-12-14 08:14:36,044 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 29 states have (on average 1.1724137931034482) internal successors, (34), 27 states have internal predecessors, (34), 16 states have call successors, (16), 11 states have call predecessors, (16), 9 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) [2022-12-14 08:14:36,044 INFO L276 IsEmpty]: Start isEmpty. Operand 500 states and 751 transitions. [2022-12-14 08:14:36,045 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-12-14 08:14:36,045 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 08:14:36,045 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 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] [2022-12-14 08:14:36,051 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a24738a-9691-4b24-a2f9-020a05aa70d3/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-12-14 08:14:36,246 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a24738a-9691-4b24-a2f9-020a05aa70d3/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 08:14:36,247 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 08:14:36,247 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 08:14:36,248 INFO L85 PathProgramCache]: Analyzing trace with hash 702988047, now seen corresponding path program 1 times [2022-12-14 08:14:36,248 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 08:14:36,248 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1580108469] [2022-12-14 08:14:36,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 08:14:36,249 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 08:14:36,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 08:14:36,350 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-12-14 08:14:36,350 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 08:14:36,350 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1580108469] [2022-12-14 08:14:36,350 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1580108469] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 08:14:36,351 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [91455585] [2022-12-14 08:14:36,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 08:14:36,351 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 08:14:36,351 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a24738a-9691-4b24-a2f9-020a05aa70d3/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 08:14:36,352 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a24738a-9691-4b24-a2f9-020a05aa70d3/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 08:14:36,352 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a24738a-9691-4b24-a2f9-020a05aa70d3/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-12-14 08:14:36,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 08:14:36,541 INFO L263 TraceCheckSpWp]: Trace formula consists of 1043 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-14 08:14:36,543 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 08:14:36,554 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2022-12-14 08:14:36,554 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 08:14:36,601 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-12-14 08:14:36,601 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [91455585] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 08:14:36,601 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1333501859] [2022-12-14 08:14:36,604 INFO L159 IcfgInterpreter]: Started Sifa with 57 locations of interest [2022-12-14 08:14:36,605 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 08:14:36,605 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 08:14:36,605 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 08:14:36,605 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 08:14:55,651 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 439 for LOIs [2022-12-14 08:14:55,921 INFO L197 IcfgInterpreter]: Interpreting procedure setClientPrivateKey with input of size 441 for LOIs [2022-12-14 08:14:56,196 INFO L197 IcfgInterpreter]: Interpreting procedure sendEmail with input of size 246 for LOIs [2022-12-14 08:14:58,507 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailTo with input of size 236 for LOIs [2022-12-14 08:14:58,543 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing with input of size 493 for LOIs [2022-12-14 08:15:16,199 INFO L197 IcfgInterpreter]: Interpreting procedure isReadable with input of size 432 for LOIs [2022-12-14 08:15:16,495 INFO L197 IcfgInterpreter]: Interpreting procedure getEmailTo with input of size 231 for LOIs [2022-12-14 08:15:16,527 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailFrom with input of size 431 for LOIs [2022-12-14 08:15:16,774 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 08:16:35,516 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [1333501859] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 08:16:35,517 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-12-14 08:16:35,517 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [48] imperfect sequences [4, 4, 4] total 54 [2022-12-14 08:16:35,517 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [409813101] [2022-12-14 08:16:35,517 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 08:16:35,517 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2022-12-14 08:16:35,517 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 08:16:35,518 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2022-12-14 08:16:35,518 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=156, Invalid=2706, Unknown=0, NotChecked=0, Total=2862 [2022-12-14 08:16:35,518 INFO L87 Difference]: Start difference. First operand 500 states and 751 transitions. Second operand has 49 states, 33 states have (on average 1.0909090909090908) internal successors, (36), 31 states have internal predecessors, (36), 14 states have call successors, (14), 8 states have call predecessors, (14), 8 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2022-12-14 08:17:12,314 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 08:17:12,314 INFO L93 Difference]: Finished difference Result 595 states and 885 transitions. [2022-12-14 08:17:12,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2022-12-14 08:17:12,314 INFO L78 Accepts]: Start accepts. Automaton has has 49 states, 33 states have (on average 1.0909090909090908) internal successors, (36), 31 states have internal predecessors, (36), 14 states have call successors, (14), 8 states have call predecessors, (14), 8 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) Word has length 78 [2022-12-14 08:17:12,315 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 08:17:12,316 INFO L225 Difference]: With dead ends: 595 [2022-12-14 08:17:12,316 INFO L226 Difference]: Without dead ends: 571 [2022-12-14 08:17:12,317 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 247 GetRequests, 184 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 951 ImplicationChecksByTransitivity, 103.6s TimeCoverageRelationStatistics Valid=246, Invalid=3914, Unknown=0, NotChecked=0, Total=4160 [2022-12-14 08:17:12,318 INFO L413 NwaCegarLoop]: 155 mSDtfsCounter, 242 mSDsluCounter, 2545 mSDsCounter, 0 mSdLazyCounter, 4066 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 243 SdHoareTripleChecker+Valid, 2700 SdHoareTripleChecker+Invalid, 4087 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 4066 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.2s IncrementalHoareTripleChecker+Time [2022-12-14 08:17:12,318 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [243 Valid, 2700 Invalid, 4087 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [21 Valid, 4066 Invalid, 0 Unknown, 0 Unchecked, 11.2s Time] [2022-12-14 08:17:12,319 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 571 states. [2022-12-14 08:17:12,675 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 571 to 534. [2022-12-14 08:17:12,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 534 states, 403 states have (on average 1.478908188585608) internal successors, (596), 409 states have internal predecessors, (596), 97 states have call successors, (97), 35 states have call predecessors, (97), 33 states have return successors, (96), 89 states have call predecessors, (96), 96 states have call successors, (96) [2022-12-14 08:17:12,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 534 states to 534 states and 789 transitions. [2022-12-14 08:17:12,677 INFO L78 Accepts]: Start accepts. Automaton has 534 states and 789 transitions. Word has length 78 [2022-12-14 08:17:12,678 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 08:17:12,678 INFO L495 AbstractCegarLoop]: Abstraction has 534 states and 789 transitions. [2022-12-14 08:17:12,678 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 33 states have (on average 1.0909090909090908) internal successors, (36), 31 states have internal predecessors, (36), 14 states have call successors, (14), 8 states have call predecessors, (14), 8 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2022-12-14 08:17:12,678 INFO L276 IsEmpty]: Start isEmpty. Operand 534 states and 789 transitions. [2022-12-14 08:17:12,679 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-12-14 08:17:12,679 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 08:17:12,679 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 08:17:12,685 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a24738a-9691-4b24-a2f9-020a05aa70d3/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-12-14 08:17:12,880 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a24738a-9691-4b24-a2f9-020a05aa70d3/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 08:17:12,881 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 08:17:12,882 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 08:17:12,882 INFO L85 PathProgramCache]: Analyzing trace with hash 1029550349, now seen corresponding path program 1 times [2022-12-14 08:17:12,882 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 08:17:12,883 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [890198086] [2022-12-14 08:17:12,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 08:17:12,883 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 08:17:12,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 08:17:13,011 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 5 proven. 2 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-12-14 08:17:13,011 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 08:17:13,011 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [890198086] [2022-12-14 08:17:13,011 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [890198086] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 08:17:13,011 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1669631184] [2022-12-14 08:17:13,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 08:17:13,012 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 08:17:13,012 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a24738a-9691-4b24-a2f9-020a05aa70d3/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 08:17:13,012 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a24738a-9691-4b24-a2f9-020a05aa70d3/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 08:17:13,013 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a24738a-9691-4b24-a2f9-020a05aa70d3/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-12-14 08:17:13,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 08:17:13,194 INFO L263 TraceCheckSpWp]: Trace formula consists of 934 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-14 08:17:13,197 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 08:17:13,226 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-12-14 08:17:13,226 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 08:17:13,274 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-12-14 08:17:13,274 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1669631184] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 08:17:13,275 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1012420952] [2022-12-14 08:17:13,277 INFO L159 IcfgInterpreter]: Started Sifa with 54 locations of interest [2022-12-14 08:17:13,277 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 08:17:13,278 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 08:17:13,278 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 08:17:13,278 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 08:18:17,918 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 444 for LOIs [2022-12-14 08:18:18,199 INFO L197 IcfgInterpreter]: Interpreting procedure setClientPrivateKey with input of size 439 for LOIs [2022-12-14 08:18:18,472 INFO L197 IcfgInterpreter]: Interpreting procedure sendEmail with input of size 453 for LOIs [2022-12-14 08:18:38,965 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailTo with input of size 443 for LOIs [2022-12-14 08:18:39,235 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing with input of size 451 for LOIs [2022-12-14 08:18:45,695 INFO L197 IcfgInterpreter]: Interpreting procedure isReadable with input of size 238 for LOIs [2022-12-14 08:18:45,724 INFO L197 IcfgInterpreter]: Interpreting procedure getEmailTo with input of size 235 for LOIs [2022-12-14 08:18:45,758 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailFrom with input of size 439 for LOIs [2022-12-14 08:18:46,390 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 08:19:26,376 WARN L233 SmtUtils]: Spent 6.15s on a formula simplification. DAG size of input: 561 DAG size of output: 402 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 08:19:32,899 WARN L233 SmtUtils]: Spent 6.24s on a formula simplification. DAG size of input: 563 DAG size of output: 404 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 08:19:38,550 WARN L233 SmtUtils]: Spent 5.36s on a formula simplification. DAG size of input: 563 DAG size of output: 386 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 08:19:44,341 WARN L233 SmtUtils]: Spent 5.49s on a formula simplification. DAG size of input: 561 DAG size of output: 384 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 08:19:49,680 WARN L233 SmtUtils]: Spent 5.02s on a formula simplification. DAG size of input: 565 DAG size of output: 388 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 08:19:55,641 WARN L233 SmtUtils]: Spent 5.63s on a formula simplification. DAG size of input: 563 DAG size of output: 386 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 08:20:12,546 WARN L233 SmtUtils]: Spent 6.03s on a formula simplification. DAG size of input: 562 DAG size of output: 403 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 08:21:01,657 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [1012420952] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 08:21:01,657 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-12-14 08:21:01,657 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [47] imperfect sequences [6, 5, 5] total 56 [2022-12-14 08:21:01,658 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [828372094] [2022-12-14 08:21:01,658 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 08:21:01,658 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2022-12-14 08:21:01,658 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 08:21:01,658 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2022-12-14 08:21:01,659 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=169, Invalid=2911, Unknown=0, NotChecked=0, Total=3080 [2022-12-14 08:21:01,659 INFO L87 Difference]: Start difference. First operand 534 states and 789 transitions. Second operand has 48 states, 32 states have (on average 1.09375) internal successors, (35), 30 states have internal predecessors, (35), 14 states have call successors, (14), 8 states have call predecessors, (14), 6 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12)