./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/email_spec11_product03.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_89398cd7-afce-4f6c-8c7c-ff24172ed33b/bin/utaipan-gh47qXpMRh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89398cd7-afce-4f6c-8c7c-ff24172ed33b/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_89398cd7-afce-4f6c-8c7c-ff24172ed33b/bin/utaipan-gh47qXpMRh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89398cd7-afce-4f6c-8c7c-ff24172ed33b/bin/utaipan-gh47qXpMRh/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/email_spec11_product03.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89398cd7-afce-4f6c-8c7c-ff24172ed33b/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_89398cd7-afce-4f6c-8c7c-ff24172ed33b/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 ceaa95778492e3bc285d343b26b58125dae05b4d97d6b8fbdf100b65fa491c48 --- 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 08:08:12,140 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-14 08:08:12,142 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-14 08:08:12,165 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-14 08:08:12,166 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-14 08:08:12,167 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-14 08:08:12,170 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-14 08:08:12,172 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-14 08:08:12,175 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-14 08:08:12,176 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-14 08:08:12,178 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-14 08:08:12,179 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-14 08:08:12,180 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-14 08:08:12,181 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-14 08:08:12,183 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-14 08:08:12,185 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-14 08:08:12,186 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-14 08:08:12,187 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-14 08:08:12,190 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-14 08:08:12,193 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-14 08:08:12,195 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-14 08:08:12,197 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-14 08:08:12,199 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-14 08:08:12,200 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-14 08:08:12,206 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-14 08:08:12,207 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-14 08:08:12,208 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-14 08:08:12,209 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-14 08:08:12,209 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-14 08:08:12,211 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-14 08:08:12,211 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-14 08:08:12,212 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-14 08:08:12,213 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-14 08:08:12,214 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-14 08:08:12,215 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-14 08:08:12,215 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-14 08:08:12,216 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-14 08:08:12,216 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-14 08:08:12,216 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-14 08:08:12,217 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-14 08:08:12,218 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-14 08:08:12,219 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89398cd7-afce-4f6c-8c7c-ff24172ed33b/bin/utaipan-gh47qXpMRh/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-12-14 08:08:12,242 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-14 08:08:12,243 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-14 08:08:12,243 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-14 08:08:12,243 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-14 08:08:12,244 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-14 08:08:12,244 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-14 08:08:12,244 INFO L138 SettingsManager]: * User list type=DISABLED [2022-12-14 08:08:12,245 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-12-14 08:08:12,245 INFO L138 SettingsManager]: * Explicit value domain=true [2022-12-14 08:08:12,245 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-12-14 08:08:12,245 INFO L138 SettingsManager]: * Octagon Domain=false [2022-12-14 08:08:12,245 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-12-14 08:08:12,246 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-12-14 08:08:12,246 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-12-14 08:08:12,246 INFO L138 SettingsManager]: * Interval Domain=false [2022-12-14 08:08:12,246 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-12-14 08:08:12,246 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-12-14 08:08:12,247 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-12-14 08:08:12,247 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-14 08:08:12,247 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-14 08:08:12,248 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-14 08:08:12,248 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-14 08:08:12,248 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-14 08:08:12,248 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-14 08:08:12,248 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-14 08:08:12,249 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-14 08:08:12,249 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-14 08:08:12,249 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-14 08:08:12,249 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-14 08:08:12,249 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-14 08:08:12,250 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-14 08:08:12,250 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-14 08:08:12,250 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 08:08:12,250 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-14 08:08:12,250 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-12-14 08:08:12,251 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-14 08:08:12,251 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-14 08:08:12,251 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-12-14 08:08:12,251 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-14 08:08:12,251 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-14 08:08:12,251 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-12-14 08:08:12,252 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_89398cd7-afce-4f6c-8c7c-ff24172ed33b/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89398cd7-afce-4f6c-8c7c-ff24172ed33b/bin/utaipan-gh47qXpMRh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ceaa95778492e3bc285d343b26b58125dae05b4d97d6b8fbdf100b65fa491c48 [2022-12-14 08:08:12,460 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-14 08:08:12,480 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-14 08:08:12,482 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-14 08:08:12,483 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-14 08:08:12,484 INFO L275 PluginConnector]: CDTParser initialized [2022-12-14 08:08:12,485 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89398cd7-afce-4f6c-8c7c-ff24172ed33b/bin/utaipan-gh47qXpMRh/../../sv-benchmarks/c/product-lines/email_spec11_product03.cil.c [2022-12-14 08:08:15,085 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-14 08:08:15,299 INFO L351 CDTParser]: Found 1 translation units. [2022-12-14 08:08:15,300 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89398cd7-afce-4f6c-8c7c-ff24172ed33b/sv-benchmarks/c/product-lines/email_spec11_product03.cil.c [2022-12-14 08:08:15,312 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89398cd7-afce-4f6c-8c7c-ff24172ed33b/bin/utaipan-gh47qXpMRh/data/ae4097279/ee4900f48e9b43ff972d1c4532eeff31/FLAGb7a7954e8 [2022-12-14 08:08:15,322 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89398cd7-afce-4f6c-8c7c-ff24172ed33b/bin/utaipan-gh47qXpMRh/data/ae4097279/ee4900f48e9b43ff972d1c4532eeff31 [2022-12-14 08:08:15,324 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-14 08:08:15,325 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-14 08:08:15,326 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-14 08:08:15,326 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-14 08:08:15,329 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-14 08:08:15,330 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 08:08:15" (1/1) ... [2022-12-14 08:08:15,331 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6639a064 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 08:08:15, skipping insertion in model container [2022-12-14 08:08:15,331 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 08:08:15" (1/1) ... [2022-12-14 08:08:15,338 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-14 08:08:15,394 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-14 08:08:15,559 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 08:08:15,563 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 08:08:15,616 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 08:08:15,618 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 08:08:15,624 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 08:08:15,627 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 08:08:15,628 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_89398cd7-afce-4f6c-8c7c-ff24172ed33b/sv-benchmarks/c/product-lines/email_spec11_product03.cil.c[19915,19928] [2022-12-14 08:08:15,718 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 08:08:15,728 INFO L203 MainTranslator]: Completed pre-run [2022-12-14 08:08:15,738 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 08:08:15,739 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 08:08:15,753 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 08:08:15,754 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 08:08:15,756 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 08:08:15,757 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 08:08:15,758 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_89398cd7-afce-4f6c-8c7c-ff24172ed33b/sv-benchmarks/c/product-lines/email_spec11_product03.cil.c[19915,19928] [2022-12-14 08:08:15,790 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 08:08:15,806 INFO L208 MainTranslator]: Completed translation [2022-12-14 08:08:15,806 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 08:08:15 WrapperNode [2022-12-14 08:08:15,807 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-14 08:08:15,807 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-14 08:08:15,807 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-14 08:08:15,807 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-14 08:08:15,813 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 08:08:15" (1/1) ... [2022-12-14 08:08:15,828 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 08:08:15" (1/1) ... [2022-12-14 08:08:15,850 INFO L138 Inliner]: procedures = 107, calls = 125, calls flagged for inlining = 35, calls inlined = 27, statements flattened = 523 [2022-12-14 08:08:15,850 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-14 08:08:15,851 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-14 08:08:15,851 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-14 08:08:15,851 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-14 08:08:15,858 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 08:08:15" (1/1) ... [2022-12-14 08:08:15,858 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 08:08:15" (1/1) ... [2022-12-14 08:08:15,860 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 08:08:15" (1/1) ... [2022-12-14 08:08:15,860 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 08:08:15" (1/1) ... [2022-12-14 08:08:15,865 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 08:08:15" (1/1) ... [2022-12-14 08:08:15,868 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 08:08:15" (1/1) ... [2022-12-14 08:08:15,870 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 08:08:15" (1/1) ... [2022-12-14 08:08:15,871 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 08:08:15" (1/1) ... [2022-12-14 08:08:15,874 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-14 08:08:15,874 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-14 08:08:15,874 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-14 08:08:15,875 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-14 08:08:15,875 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 08:08:15" (1/1) ... [2022-12-14 08:08:15,880 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 08:08:15,887 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89398cd7-afce-4f6c-8c7c-ff24172ed33b/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 08:08:15,897 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89398cd7-afce-4f6c-8c7c-ff24172ed33b/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-14 08:08:15,899 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89398cd7-afce-4f6c-8c7c-ff24172ed33b/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-14 08:08:15,923 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2022-12-14 08:08:15,923 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2022-12-14 08:08:15,923 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2022-12-14 08:08:15,923 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2022-12-14 08:08:15,924 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable [2022-12-14 08:08:15,924 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable [2022-12-14 08:08:15,924 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2022-12-14 08:08:15,924 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailFrom [2022-12-14 08:08:15,924 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailFrom [2022-12-14 08:08:15,924 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2022-12-14 08:08:15,924 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2022-12-14 08:08:15,924 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-14 08:08:15,924 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2022-12-14 08:08:15,924 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2022-12-14 08:08:15,924 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2022-12-14 08:08:15,924 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2022-12-14 08:08:15,924 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailTo [2022-12-14 08:08:15,924 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailTo [2022-12-14 08:08:15,924 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-14 08:08:15,925 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-14 08:08:15,925 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-14 08:08:16,037 INFO L235 CfgBuilder]: Building ICFG [2022-12-14 08:08:16,038 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-14 08:08:16,383 INFO L276 CfgBuilder]: Performing block encoding [2022-12-14 08:08:16,485 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-14 08:08:16,486 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-12-14 08:08:16,488 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 08:08:16 BoogieIcfgContainer [2022-12-14 08:08:16,488 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-14 08:08:16,489 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-14 08:08:16,489 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-14 08:08:16,492 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-14 08:08:16,492 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.12 08:08:15" (1/3) ... [2022-12-14 08:08:16,492 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5562c1d8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 08:08:16, skipping insertion in model container [2022-12-14 08:08:16,493 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 08:08:15" (2/3) ... [2022-12-14 08:08:16,493 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5562c1d8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 08:08:16, skipping insertion in model container [2022-12-14 08:08:16,493 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 08:08:16" (3/3) ... [2022-12-14 08:08:16,494 INFO L112 eAbstractionObserver]: Analyzing ICFG email_spec11_product03.cil.c [2022-12-14 08:08:16,508 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-14 08:08:16,508 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-12-14 08:08:16,542 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-14 08:08:16,547 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;@399dbdee, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-14 08:08:16,547 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-12-14 08:08:16,551 INFO L276 IsEmpty]: Start isEmpty. Operand has 77 states, 54 states have (on average 1.537037037037037) internal successors, (83), 56 states have internal predecessors, (83), 13 states have call successors, (13), 8 states have call predecessors, (13), 8 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2022-12-14 08:08:16,557 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2022-12-14 08:08:16,558 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 08:08:16,558 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-12-14 08:08:16,559 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 08:08:16,562 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 08:08:16,563 INFO L85 PathProgramCache]: Analyzing trace with hash 749101706, now seen corresponding path program 1 times [2022-12-14 08:08:16,570 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 08:08:16,570 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1745780832] [2022-12-14 08:08:16,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 08:08:16,570 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 08:08:16,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 08:08:16,761 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-12-14 08:08:16,762 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 08:08:16,762 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1745780832] [2022-12-14 08:08:16,763 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1745780832] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 08:08:16,763 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 08:08:16,763 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-14 08:08:16,764 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1249076880] [2022-12-14 08:08:16,765 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 08:08:16,768 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-12-14 08:08:16,768 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 08:08:16,788 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-12-14 08:08:16,789 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-12-14 08:08:16,790 INFO L87 Difference]: Start difference. First operand has 77 states, 54 states have (on average 1.537037037037037) internal successors, (83), 56 states have internal predecessors, (83), 13 states have call successors, (13), 8 states have call predecessors, (13), 8 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) Second operand has 2 states, 2 states have (on average 10.5) internal successors, (21), 2 states have internal predecessors, (21), 2 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-12-14 08:08:16,846 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 08:08:16,847 INFO L93 Difference]: Finished difference Result 120 states and 160 transitions. [2022-12-14 08:08:16,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-12-14 08:08:16,848 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 10.5) internal successors, (21), 2 states have internal predecessors, (21), 2 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 42 [2022-12-14 08:08:16,849 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 08:08:16,854 INFO L225 Difference]: With dead ends: 120 [2022-12-14 08:08:16,854 INFO L226 Difference]: Without dead ends: 74 [2022-12-14 08:08:16,857 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 08:08:16,859 INFO L413 NwaCegarLoop]: 88 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 88 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 08:08:16,860 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 88 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 08:08:16,872 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2022-12-14 08:08:16,885 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 74. [2022-12-14 08:08:16,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74 states, 52 states have (on average 1.4807692307692308) internal successors, (77), 53 states have internal predecessors, (77), 13 states have call successors, (13), 8 states have call predecessors, (13), 8 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2022-12-14 08:08:16,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 102 transitions. [2022-12-14 08:08:16,889 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 102 transitions. Word has length 42 [2022-12-14 08:08:16,890 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 08:08:16,890 INFO L495 AbstractCegarLoop]: Abstraction has 74 states and 102 transitions. [2022-12-14 08:08:16,890 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 10.5) internal successors, (21), 2 states have internal predecessors, (21), 2 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-12-14 08:08:16,890 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 102 transitions. [2022-12-14 08:08:16,892 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2022-12-14 08:08:16,892 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 08:08:16,892 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-12-14 08:08:16,892 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-14 08:08:16,892 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 08:08:16,893 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 08:08:16,893 INFO L85 PathProgramCache]: Analyzing trace with hash 360457399, now seen corresponding path program 1 times [2022-12-14 08:08:16,893 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 08:08:16,893 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [659681400] [2022-12-14 08:08:16,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 08:08:16,894 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 08:08:16,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 08:08:17,000 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-12-14 08:08:17,001 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 08:08:17,001 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [659681400] [2022-12-14 08:08:17,001 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [659681400] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 08:08:17,001 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 08:08:17,001 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 08:08:17,002 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [246837720] [2022-12-14 08:08:17,002 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 08:08:17,003 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 08:08:17,003 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 08:08:17,004 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 08:08:17,004 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 08:08:17,004 INFO L87 Difference]: Start difference. First operand 74 states and 102 transitions. Second operand has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 2 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-12-14 08:08:17,057 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 08:08:17,057 INFO L93 Difference]: Finished difference Result 116 states and 148 transitions. [2022-12-14 08:08:17,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 08:08:17,058 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 2 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 43 [2022-12-14 08:08:17,058 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 08:08:17,059 INFO L225 Difference]: With dead ends: 116 [2022-12-14 08:08:17,059 INFO L226 Difference]: Without dead ends: 76 [2022-12-14 08:08:17,059 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 08:08:17,060 INFO L413 NwaCegarLoop]: 85 mSDtfsCounter, 0 mSDsluCounter, 84 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 169 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 08:08:17,060 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 169 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 08:08:17,061 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2022-12-14 08:08:17,074 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 76. [2022-12-14 08:08:17,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76 states, 54 states have (on average 1.462962962962963) internal successors, (79), 55 states have internal predecessors, (79), 13 states have call successors, (13), 8 states have call predecessors, (13), 8 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2022-12-14 08:08:17,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 104 transitions. [2022-12-14 08:08:17,077 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 104 transitions. Word has length 43 [2022-12-14 08:08:17,077 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 08:08:17,077 INFO L495 AbstractCegarLoop]: Abstraction has 76 states and 104 transitions. [2022-12-14 08:08:17,078 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 2 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-12-14 08:08:17,078 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 104 transitions. [2022-12-14 08:08:17,079 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-12-14 08:08:17,079 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 08:08:17,079 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-12-14 08:08:17,080 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-14 08:08:17,080 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 08:08:17,080 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 08:08:17,081 INFO L85 PathProgramCache]: Analyzing trace with hash 143342186, now seen corresponding path program 1 times [2022-12-14 08:08:17,081 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 08:08:17,081 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [491317307] [2022-12-14 08:08:17,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 08:08:17,082 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 08:08:17,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 08:08:17,226 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-12-14 08:08:17,226 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 08:08:17,227 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [491317307] [2022-12-14 08:08:17,227 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [491317307] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 08:08:17,227 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1815010464] [2022-12-14 08:08:17,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 08:08:17,228 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 08:08:17,228 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89398cd7-afce-4f6c-8c7c-ff24172ed33b/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 08:08:17,229 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89398cd7-afce-4f6c-8c7c-ff24172ed33b/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 08:08:17,230 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89398cd7-afce-4f6c-8c7c-ff24172ed33b/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-12-14 08:08:17,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 08:08:17,427 INFO L263 TraceCheckSpWp]: Trace formula consists of 760 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-14 08:08:17,433 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 08:08:17,484 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-12-14 08:08:17,484 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 08:08:17,532 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-12-14 08:08:17,533 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1815010464] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 08:08:17,533 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1597918152] [2022-12-14 08:08:17,553 INFO L159 IcfgInterpreter]: Started Sifa with 40 locations of interest [2022-12-14 08:08:17,553 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 08:08:17,557 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 08:08:17,561 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 08:08:17,561 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 08:08:23,843 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 451 for LOIs [2022-12-14 08:08:24,136 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 08:08:40,221 WARN L233 SmtUtils]: Spent 5.72s on a formula simplification. DAG size of input: 564 DAG size of output: 323 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 08:08:45,930 WARN L233 SmtUtils]: Spent 5.38s on a formula simplification. DAG size of input: 566 DAG size of output: 378 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 08:08:46,901 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [1597918152] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 08:08:46,901 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-12-14 08:08:46,901 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [4, 4, 4] total 19 [2022-12-14 08:08:46,902 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2061465634] [2022-12-14 08:08:46,902 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 08:08:46,902 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-12-14 08:08:46,902 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 08:08:46,903 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-12-14 08:08:46,903 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=284, Unknown=0, NotChecked=0, Total=342 [2022-12-14 08:08:46,903 INFO L87 Difference]: Start difference. First operand 76 states and 104 transitions. Second operand has 14 states, 10 states have (on average 2.5) internal successors, (25), 9 states have internal predecessors, (25), 4 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2022-12-14 08:08:49,633 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 08:08:49,633 INFO L93 Difference]: Finished difference Result 214 states and 337 transitions. [2022-12-14 08:08:49,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-12-14 08:08:49,634 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 10 states have (on average 2.5) internal successors, (25), 9 states have internal predecessors, (25), 4 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) Word has length 47 [2022-12-14 08:08:49,634 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 08:08:49,636 INFO L225 Difference]: With dead ends: 214 [2022-12-14 08:08:49,636 INFO L226 Difference]: Without dead ends: 150 [2022-12-14 08:08:49,636 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 143 GetRequests, 124 SyntacticMatches, 2 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 98 ImplicationChecksByTransitivity, 22.8s TimeCoverageRelationStatistics Valid=58, Invalid=284, Unknown=0, NotChecked=0, Total=342 [2022-12-14 08:08:49,637 INFO L413 NwaCegarLoop]: 130 mSDtfsCounter, 98 mSDsluCounter, 1156 mSDsCounter, 0 mSdLazyCounter, 756 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 98 SdHoareTripleChecker+Valid, 1286 SdHoareTripleChecker+Invalid, 766 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 756 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2022-12-14 08:08:49,637 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [98 Valid, 1286 Invalid, 766 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 756 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2022-12-14 08:08:49,638 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150 states. [2022-12-14 08:08:49,676 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150 to 97. [2022-12-14 08:08:49,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 97 states, 75 states have (on average 1.48) internal successors, (111), 76 states have internal predecessors, (111), 13 states have call successors, (13), 8 states have call predecessors, (13), 8 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2022-12-14 08:08:49,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 136 transitions. [2022-12-14 08:08:49,677 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 136 transitions. Word has length 47 [2022-12-14 08:08:49,678 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 08:08:49,678 INFO L495 AbstractCegarLoop]: Abstraction has 97 states and 136 transitions. [2022-12-14 08:08:49,678 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 10 states have (on average 2.5) internal successors, (25), 9 states have internal predecessors, (25), 4 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2022-12-14 08:08:49,678 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 136 transitions. [2022-12-14 08:08:49,679 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2022-12-14 08:08:49,679 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 08:08:49,679 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-12-14 08:08:49,686 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89398cd7-afce-4f6c-8c7c-ff24172ed33b/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-12-14 08:08:49,879 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89398cd7-afce-4f6c-8c7c-ff24172ed33b/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 08:08:49,881 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 08:08:49,882 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 08:08:49,883 INFO L85 PathProgramCache]: Analyzing trace with hash -1382130300, now seen corresponding path program 1 times [2022-12-14 08:08:49,883 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 08:08:49,884 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1454639722] [2022-12-14 08:08:49,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 08:08:49,885 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 08:08:49,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 08:08:49,960 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-12-14 08:08:49,961 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 08:08:49,961 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1454639722] [2022-12-14 08:08:49,961 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1454639722] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 08:08:49,961 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 08:08:49,961 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 08:08:49,961 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1630847074] [2022-12-14 08:08:49,961 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 08:08:49,962 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 08:08:49,962 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 08:08:49,963 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 08:08:49,963 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 08:08:49,963 INFO L87 Difference]: Start difference. First operand 97 states and 136 transitions. Second operand has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 2 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-12-14 08:08:50,102 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 08:08:50,102 INFO L93 Difference]: Finished difference Result 230 states and 337 transitions. [2022-12-14 08:08:50,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 08:08:50,103 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 2 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 48 [2022-12-14 08:08:50,103 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 08:08:50,104 INFO L225 Difference]: With dead ends: 230 [2022-12-14 08:08:50,104 INFO L226 Difference]: Without dead ends: 147 [2022-12-14 08:08:50,106 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 08:08:50,107 INFO L413 NwaCegarLoop]: 85 mSDtfsCounter, 46 mSDsluCounter, 81 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 166 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 08:08:50,107 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [47 Valid, 166 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 08:08:50,108 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147 states. [2022-12-14 08:08:50,175 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147 to 142. [2022-12-14 08:08:50,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 142 states, 120 states have (on average 1.55) internal successors, (186), 121 states have internal predecessors, (186), 13 states have call successors, (13), 8 states have call predecessors, (13), 8 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2022-12-14 08:08:50,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 211 transitions. [2022-12-14 08:08:50,177 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 211 transitions. Word has length 48 [2022-12-14 08:08:50,177 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 08:08:50,177 INFO L495 AbstractCegarLoop]: Abstraction has 142 states and 211 transitions. [2022-12-14 08:08:50,177 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 2 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-12-14 08:08:50,177 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 211 transitions. [2022-12-14 08:08:50,178 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2022-12-14 08:08:50,178 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 08:08:50,178 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-12-14 08:08:50,178 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-12-14 08:08:50,178 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 08:08:50,179 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 08:08:50,179 INFO L85 PathProgramCache]: Analyzing trace with hash 2050428724, now seen corresponding path program 1 times [2022-12-14 08:08:50,179 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 08:08:50,179 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [885503679] [2022-12-14 08:08:50,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 08:08:50,179 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 08:08:50,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 08:08:50,258 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-12-14 08:08:50,259 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 08:08:50,259 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [885503679] [2022-12-14 08:08:50,259 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [885503679] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 08:08:50,259 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1579175625] [2022-12-14 08:08:50,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 08:08:50,259 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 08:08:50,259 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89398cd7-afce-4f6c-8c7c-ff24172ed33b/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 08:08:50,260 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89398cd7-afce-4f6c-8c7c-ff24172ed33b/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 08:08:50,261 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89398cd7-afce-4f6c-8c7c-ff24172ed33b/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-12-14 08:08:50,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 08:08:50,415 INFO L263 TraceCheckSpWp]: Trace formula consists of 777 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-14 08:08:50,420 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 08:08:50,434 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-12-14 08:08:50,434 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 08:08:50,464 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-12-14 08:08:50,465 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1579175625] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 08:08:50,465 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [393731790] [2022-12-14 08:08:50,467 INFO L159 IcfgInterpreter]: Started Sifa with 42 locations of interest [2022-12-14 08:08:50,467 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 08:08:50,467 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 08:08:50,467 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 08:08:50,468 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 08:08:58,242 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 451 for LOIs [2022-12-14 08:08:58,540 INFO L197 IcfgInterpreter]: Interpreting procedure sendEmail with input of size 247 for LOIs [2022-12-14 08:08:59,931 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailTo with input of size 237 for LOIs [2022-12-14 08:08:59,968 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing with input of size 249 for LOIs [2022-12-14 08:09:02,878 INFO L197 IcfgInterpreter]: Interpreting procedure isReadable with input of size 243 for LOIs [2022-12-14 08:09:02,908 INFO L197 IcfgInterpreter]: Interpreting procedure getEmailTo with input of size 240 for LOIs [2022-12-14 08:09:02,943 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailFrom with input of size 478 for LOIs [2022-12-14 08:09:04,654 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 08:09:58,266 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [393731790] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 08:09:58,267 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-12-14 08:09:58,267 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [38] imperfect sequences [4, 4, 4] total 44 [2022-12-14 08:09:58,267 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [990791283] [2022-12-14 08:09:58,267 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 08:09:58,268 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2022-12-14 08:09:58,268 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 08:09:58,269 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2022-12-14 08:09:58,270 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=126, Invalid=1766, Unknown=0, NotChecked=0, Total=1892 [2022-12-14 08:09:58,270 INFO L87 Difference]: Start difference. First operand 142 states and 211 transitions. Second operand has 39 states, 25 states have (on average 1.08) internal successors, (27), 23 states have internal predecessors, (27), 10 states have call successors, (10), 7 states have call predecessors, (10), 5 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2022-12-14 08:10:20,469 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 08:10:20,469 INFO L93 Difference]: Finished difference Result 377 states and 599 transitions. [2022-12-14 08:10:20,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2022-12-14 08:10:20,470 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 25 states have (on average 1.08) internal successors, (27), 23 states have internal predecessors, (27), 10 states have call successors, (10), 7 states have call predecessors, (10), 5 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) Word has length 49 [2022-12-14 08:10:20,470 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 08:10:20,471 INFO L225 Difference]: With dead ends: 377 [2022-12-14 08:10:20,471 INFO L226 Difference]: Without dead ends: 290 [2022-12-14 08:10:20,472 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 157 GetRequests, 107 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 598 ImplicationChecksByTransitivity, 69.9s TimeCoverageRelationStatistics Valid=187, Invalid=2465, Unknown=0, NotChecked=0, Total=2652 [2022-12-14 08:10:20,473 INFO L413 NwaCegarLoop]: 94 mSDtfsCounter, 198 mSDsluCounter, 1855 mSDsCounter, 0 mSdLazyCounter, 2280 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 199 SdHoareTripleChecker+Valid, 1949 SdHoareTripleChecker+Invalid, 2304 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 2280 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.6s IncrementalHoareTripleChecker+Time [2022-12-14 08:10:20,473 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [199 Valid, 1949 Invalid, 2304 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [24 Valid, 2280 Invalid, 0 Unknown, 0 Unchecked, 5.6s Time] [2022-12-14 08:10:20,474 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 290 states. [2022-12-14 08:10:20,615 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 290 to 242. [2022-12-14 08:10:20,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 242 states, 208 states have (on average 1.6057692307692308) internal successors, (334), 210 states have internal predecessors, (334), 20 states have call successors, (20), 14 states have call predecessors, (20), 13 states have return successors, (20), 17 states have call predecessors, (20), 19 states have call successors, (20) [2022-12-14 08:10:20,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 242 states to 242 states and 374 transitions. [2022-12-14 08:10:20,616 INFO L78 Accepts]: Start accepts. Automaton has 242 states and 374 transitions. Word has length 49 [2022-12-14 08:10:20,616 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 08:10:20,617 INFO L495 AbstractCegarLoop]: Abstraction has 242 states and 374 transitions. [2022-12-14 08:10:20,617 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 25 states have (on average 1.08) internal successors, (27), 23 states have internal predecessors, (27), 10 states have call successors, (10), 7 states have call predecessors, (10), 5 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2022-12-14 08:10:20,617 INFO L276 IsEmpty]: Start isEmpty. Operand 242 states and 374 transitions. [2022-12-14 08:10:20,618 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2022-12-14 08:10:20,618 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 08:10:20,618 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] [2022-12-14 08:10:20,624 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89398cd7-afce-4f6c-8c7c-ff24172ed33b/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-12-14 08:10:20,819 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89398cd7-afce-4f6c-8c7c-ff24172ed33b/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 08:10:20,821 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 08:10:20,822 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 08:10:20,822 INFO L85 PathProgramCache]: Analyzing trace with hash 1395122097, now seen corresponding path program 1 times [2022-12-14 08:10:20,823 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 08:10:20,824 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [176701047] [2022-12-14 08:10:20,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 08:10:20,825 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 08:10:20,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 08:10:20,966 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-12-14 08:10:20,967 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 08:10:20,967 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [176701047] [2022-12-14 08:10:20,967 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [176701047] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 08:10:20,967 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1842126489] [2022-12-14 08:10:20,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 08:10:20,967 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 08:10:20,968 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89398cd7-afce-4f6c-8c7c-ff24172ed33b/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 08:10:20,968 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89398cd7-afce-4f6c-8c7c-ff24172ed33b/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 08:10:20,969 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89398cd7-afce-4f6c-8c7c-ff24172ed33b/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-12-14 08:10:21,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 08:10:21,111 INFO L263 TraceCheckSpWp]: Trace formula consists of 783 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-14 08:10:21,113 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 08:10:21,136 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-12-14 08:10:21,137 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 08:10:21,169 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-12-14 08:10:21,169 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1842126489] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 08:10:21,170 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1619382733] [2022-12-14 08:10:21,172 INFO L159 IcfgInterpreter]: Started Sifa with 42 locations of interest [2022-12-14 08:10:21,172 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 08:10:21,173 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 08:10:21,173 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 08:10:21,173 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 08:10:37,117 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 451 for LOIs [2022-12-14 08:10:37,404 INFO L197 IcfgInterpreter]: Interpreting procedure sendEmail with input of size 248 for LOIs [2022-12-14 08:10:38,718 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailTo with input of size 238 for LOIs [2022-12-14 08:10:38,754 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing with input of size 248 for LOIs [2022-12-14 08:10:41,641 INFO L197 IcfgInterpreter]: Interpreting procedure isReadable with input of size 244 for LOIs [2022-12-14 08:10:41,671 INFO L197 IcfgInterpreter]: Interpreting procedure getEmailTo with input of size 241 for LOIs [2022-12-14 08:10:41,706 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailFrom with input of size 477 for LOIs [2022-12-14 08:10:43,414 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 08:11:04,704 WARN L233 SmtUtils]: Spent 5.08s on a formula simplification. DAG size of input: 552 DAG size of output: 412 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 08:11:15,762 WARN L233 SmtUtils]: Spent 5.19s on a formula simplification. DAG size of input: 558 DAG size of output: 418 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 08:11:21,549 WARN L233 SmtUtils]: Spent 5.54s on a formula simplification. DAG size of input: 551 DAG size of output: 411 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 08:11:31,574 WARN L233 SmtUtils]: Spent 8.81s on a formula simplification. DAG size of input: 477 DAG size of output: 364 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 08:11:57,249 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [1619382733] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 08:11:57,249 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-12-14 08:11:57,249 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [38] imperfect sequences [6, 5, 5] total 47 [2022-12-14 08:11:57,250 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1630596541] [2022-12-14 08:11:57,250 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 08:11:57,250 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2022-12-14 08:11:57,250 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 08:11:57,251 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2022-12-14 08:11:57,252 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=131, Invalid=2031, Unknown=0, NotChecked=0, Total=2162 [2022-12-14 08:11:57,252 INFO L87 Difference]: Start difference. First operand 242 states and 374 transitions. Second operand has 39 states, 25 states have (on average 1.12) internal successors, (28), 23 states have internal predecessors, (28), 10 states have call successors, (10), 7 states have call predecessors, (10), 5 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2022-12-14 08:12:30,288 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 08:12:30,288 INFO L93 Difference]: Finished difference Result 526 states and 826 transitions. [2022-12-14 08:12:30,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2022-12-14 08:12:30,290 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 25 states have (on average 1.12) internal successors, (28), 23 states have internal predecessors, (28), 10 states have call successors, (10), 7 states have call predecessors, (10), 5 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) Word has length 52 [2022-12-14 08:12:30,290 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 08:12:30,291 INFO L225 Difference]: With dead ends: 526 [2022-12-14 08:12:30,292 INFO L226 Difference]: Without dead ends: 324 [2022-12-14 08:12:30,293 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 170 GetRequests, 114 SyntacticMatches, 2 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 498 ImplicationChecksByTransitivity, 98.7s TimeCoverageRelationStatistics Valid=198, Invalid=2882, Unknown=0, NotChecked=0, Total=3080 [2022-12-14 08:12:30,294 INFO L413 NwaCegarLoop]: 105 mSDtfsCounter, 269 mSDsluCounter, 2026 mSDsCounter, 0 mSdLazyCounter, 2831 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 270 SdHoareTripleChecker+Valid, 2131 SdHoareTripleChecker+Invalid, 2864 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 2831 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.8s IncrementalHoareTripleChecker+Time [2022-12-14 08:12:30,294 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [270 Valid, 2131 Invalid, 2864 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [33 Valid, 2831 Invalid, 0 Unknown, 0 Unchecked, 7.8s Time] [2022-12-14 08:12:30,295 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 324 states. [2022-12-14 08:12:30,485 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 324 to 262. [2022-12-14 08:12:30,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 262 states, 228 states have (on average 1.5921052631578947) internal successors, (363), 230 states have internal predecessors, (363), 20 states have call successors, (20), 14 states have call predecessors, (20), 13 states have return successors, (20), 17 states have call predecessors, (20), 19 states have call successors, (20) [2022-12-14 08:12:30,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 262 states to 262 states and 403 transitions. [2022-12-14 08:12:30,486 INFO L78 Accepts]: Start accepts. Automaton has 262 states and 403 transitions. Word has length 52 [2022-12-14 08:12:30,487 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 08:12:30,487 INFO L495 AbstractCegarLoop]: Abstraction has 262 states and 403 transitions. [2022-12-14 08:12:30,487 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 25 states have (on average 1.12) internal successors, (28), 23 states have internal predecessors, (28), 10 states have call successors, (10), 7 states have call predecessors, (10), 5 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2022-12-14 08:12:30,487 INFO L276 IsEmpty]: Start isEmpty. Operand 262 states and 403 transitions. [2022-12-14 08:12:30,488 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2022-12-14 08:12:30,488 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 08:12:30,488 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 08:12:30,493 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89398cd7-afce-4f6c-8c7c-ff24172ed33b/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-12-14 08:12:30,688 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89398cd7-afce-4f6c-8c7c-ff24172ed33b/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2022-12-14 08:12:30,689 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 08:12:30,690 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 08:12:30,691 INFO L85 PathProgramCache]: Analyzing trace with hash 177431901, now seen corresponding path program 1 times [2022-12-14 08:12:30,691 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 08:12:30,691 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1488114007] [2022-12-14 08:12:30,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 08:12:30,692 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 08:12:30,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 08:12:30,862 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 5 proven. 2 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-12-14 08:12:30,863 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 08:12:30,863 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1488114007] [2022-12-14 08:12:30,863 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1488114007] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 08:12:30,863 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [104993967] [2022-12-14 08:12:30,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 08:12:30,863 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 08:12:30,864 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89398cd7-afce-4f6c-8c7c-ff24172ed33b/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 08:12:30,865 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89398cd7-afce-4f6c-8c7c-ff24172ed33b/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 08:12:30,865 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89398cd7-afce-4f6c-8c7c-ff24172ed33b/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-12-14 08:12:31,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 08:12:31,007 INFO L263 TraceCheckSpWp]: Trace formula consists of 799 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-14 08:12:31,010 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 08:12:31,040 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-12-14 08:12:31,040 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 08:12:31,085 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-12-14 08:12:31,085 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [104993967] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 08:12:31,085 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1421743990] [2022-12-14 08:12:31,088 INFO L159 IcfgInterpreter]: Started Sifa with 44 locations of interest [2022-12-14 08:12:31,088 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 08:12:31,089 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 08:12:31,089 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 08:12:31,089 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 08:12:50,311 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 451 for LOIs [2022-12-14 08:12:50,595 INFO L197 IcfgInterpreter]: Interpreting procedure sendEmail with input of size 248 for LOIs [2022-12-14 08:12:51,935 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailTo with input of size 238 for LOIs [2022-12-14 08:12:51,972 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing with input of size 248 for LOIs [2022-12-14 08:12:54,824 INFO L197 IcfgInterpreter]: Interpreting procedure isReadable with input of size 244 for LOIs [2022-12-14 08:12:54,854 INFO L197 IcfgInterpreter]: Interpreting procedure getEmailTo with input of size 241 for LOIs [2022-12-14 08:12:54,889 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailFrom with input of size 477 for LOIs [2022-12-14 08:12:57,896 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 08:13:22,938 WARN L233 SmtUtils]: Spent 5.81s on a formula simplification. DAG size of input: 553 DAG size of output: 426 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 08:13:28,921 WARN L233 SmtUtils]: Spent 5.73s on a formula simplification. DAG size of input: 551 DAG size of output: 424 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 08:13:34,239 WARN L233 SmtUtils]: Spent 5.05s on a formula simplification. DAG size of input: 555 DAG size of output: 428 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 08:14:14,413 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [1421743990] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 08:14:14,413 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-12-14 08:14:14,413 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [40] imperfect sequences [6, 5, 5] total 49 [2022-12-14 08:14:14,413 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [876573577] [2022-12-14 08:14:14,414 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 08:14:14,414 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2022-12-14 08:14:14,414 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 08:14:14,414 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2022-12-14 08:14:14,415 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=142, Invalid=2210, Unknown=0, NotChecked=0, Total=2352 [2022-12-14 08:14:14,415 INFO L87 Difference]: Start difference. First operand 262 states and 403 transitions. Second operand has 41 states, 27 states have (on average 1.1111111111111112) internal successors, (30), 25 states have internal predecessors, (30), 10 states have call successors, (10), 7 states have call predecessors, (10), 5 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2022-12-14 08:14:59,849 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 08:14:59,850 INFO L93 Difference]: Finished difference Result 642 states and 1024 transitions. [2022-12-14 08:14:59,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2022-12-14 08:14:59,851 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 27 states have (on average 1.1111111111111112) internal successors, (30), 25 states have internal predecessors, (30), 10 states have call successors, (10), 7 states have call predecessors, (10), 5 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) Word has length 56 [2022-12-14 08:14:59,851 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 08:14:59,852 INFO L225 Difference]: With dead ends: 642 [2022-12-14 08:14:59,852 INFO L226 Difference]: Without dead ends: 482 [2022-12-14 08:14:59,854 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 186 GetRequests, 124 SyntacticMatches, 2 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 611 ImplicationChecksByTransitivity, 112.9s TimeCoverageRelationStatistics Valid=266, Invalid=3516, Unknown=0, NotChecked=0, Total=3782 [2022-12-14 08:14:59,854 INFO L413 NwaCegarLoop]: 130 mSDtfsCounter, 328 mSDsluCounter, 2170 mSDsCounter, 0 mSdLazyCounter, 3248 mSolverCounterSat, 58 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 329 SdHoareTripleChecker+Valid, 2300 SdHoareTripleChecker+Invalid, 3306 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 58 IncrementalHoareTripleChecker+Valid, 3248 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.4s IncrementalHoareTripleChecker+Time [2022-12-14 08:14:59,854 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [329 Valid, 2300 Invalid, 3306 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [58 Valid, 3248 Invalid, 0 Unknown, 0 Unchecked, 8.4s Time] [2022-12-14 08:14:59,855 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 482 states. [2022-12-14 08:15:00,100 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 482 to 276. [2022-12-14 08:15:00,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 276 states, 242 states have (on average 1.5991735537190082) internal successors, (387), 244 states have internal predecessors, (387), 20 states have call successors, (20), 14 states have call predecessors, (20), 13 states have return successors, (20), 17 states have call predecessors, (20), 19 states have call successors, (20) [2022-12-14 08:15:00,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 276 states to 276 states and 427 transitions. [2022-12-14 08:15:00,101 INFO L78 Accepts]: Start accepts. Automaton has 276 states and 427 transitions. Word has length 56 [2022-12-14 08:15:00,102 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 08:15:00,102 INFO L495 AbstractCegarLoop]: Abstraction has 276 states and 427 transitions. [2022-12-14 08:15:00,102 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 27 states have (on average 1.1111111111111112) internal successors, (30), 25 states have internal predecessors, (30), 10 states have call successors, (10), 7 states have call predecessors, (10), 5 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2022-12-14 08:15:00,102 INFO L276 IsEmpty]: Start isEmpty. Operand 276 states and 427 transitions. [2022-12-14 08:15:00,103 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2022-12-14 08:15:00,103 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 08:15:00,103 INFO L195 NwaCegarLoop]: trace histogram [4, 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] [2022-12-14 08:15:00,108 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89398cd7-afce-4f6c-8c7c-ff24172ed33b/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-12-14 08:15:00,304 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89398cd7-afce-4f6c-8c7c-ff24172ed33b/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 08:15:00,305 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 08:15:00,306 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 08:15:00,306 INFO L85 PathProgramCache]: Analyzing trace with hash 57096612, now seen corresponding path program 1 times [2022-12-14 08:15:00,307 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 08:15:00,307 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [731418915] [2022-12-14 08:15:00,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 08:15:00,308 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 08:15:00,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 08:15:00,413 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-12-14 08:15:00,413 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 08:15:00,413 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [731418915] [2022-12-14 08:15:00,413 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [731418915] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 08:15:00,413 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2094486344] [2022-12-14 08:15:00,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 08:15:00,414 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 08:15:00,414 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89398cd7-afce-4f6c-8c7c-ff24172ed33b/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 08:15:00,415 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89398cd7-afce-4f6c-8c7c-ff24172ed33b/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 08:15:00,416 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89398cd7-afce-4f6c-8c7c-ff24172ed33b/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-12-14 08:15:00,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 08:15:00,551 INFO L263 TraceCheckSpWp]: Trace formula consists of 798 conjuncts, 5 conjunts are in the unsatisfiable core [2022-12-14 08:15:00,553 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 08:15:00,589 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-12-14 08:15:00,589 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 08:15:00,635 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-12-14 08:15:00,635 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2094486344] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 08:15:00,635 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1224005410] [2022-12-14 08:15:00,638 INFO L159 IcfgInterpreter]: Started Sifa with 44 locations of interest [2022-12-14 08:15:00,638 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 08:15:00,638 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 08:15:00,638 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 08:15:00,638 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 08:15:23,315 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 451 for LOIs [2022-12-14 08:15:23,614 INFO L197 IcfgInterpreter]: Interpreting procedure sendEmail with input of size 248 for LOIs [2022-12-14 08:15:24,921 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailTo with input of size 238 for LOIs [2022-12-14 08:15:24,958 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing with input of size 250 for LOIs [2022-12-14 08:15:27,832 INFO L197 IcfgInterpreter]: Interpreting procedure isReadable with input of size 244 for LOIs [2022-12-14 08:15:27,862 INFO L197 IcfgInterpreter]: Interpreting procedure getEmailTo with input of size 241 for LOIs [2022-12-14 08:15:27,897 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailFrom with input of size 477 for LOIs [2022-12-14 08:15:29,603 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 08:16:00,076 WARN L233 SmtUtils]: Spent 5.40s on a formula simplification. DAG size of input: 552 DAG size of output: 425 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 08:16:19,945 WARN L233 SmtUtils]: Spent 5.95s on a formula simplification. DAG size of input: 549 DAG size of output: 422 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 08:16:48,611 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [1224005410] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 08:16:48,611 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-12-14 08:16:48,611 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [40] imperfect sequences [6, 6, 6] total 49 [2022-12-14 08:16:48,611 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [78360513] [2022-12-14 08:16:48,611 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 08:16:48,612 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2022-12-14 08:16:48,612 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 08:16:48,612 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2022-12-14 08:16:48,613 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=144, Invalid=2208, Unknown=0, NotChecked=0, Total=2352 [2022-12-14 08:16:48,613 INFO L87 Difference]: Start difference. First operand 276 states and 427 transitions. Second operand has 41 states, 27 states have (on average 1.1481481481481481) internal successors, (31), 25 states have internal predecessors, (31), 10 states have call successors, (10), 7 states have call predecessors, (10), 5 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2022-12-14 08:18:00,087 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 08:18:00,087 INFO L93 Difference]: Finished difference Result 680 states and 1100 transitions. [2022-12-14 08:18:00,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2022-12-14 08:18:00,088 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 27 states have (on average 1.1481481481481481) internal successors, (31), 25 states have internal predecessors, (31), 10 states have call successors, (10), 7 states have call predecessors, (10), 5 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) Word has length 58 [2022-12-14 08:18:00,088 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 08:18:00,091 INFO L225 Difference]: With dead ends: 680 [2022-12-14 08:18:00,091 INFO L226 Difference]: Without dead ends: 497 [2022-12-14 08:18:00,093 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 196 GetRequests, 128 SyntacticMatches, 4 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 746 ImplicationChecksByTransitivity, 135.7s TimeCoverageRelationStatistics Valid=308, Invalid=3982, Unknown=0, NotChecked=0, Total=4290 [2022-12-14 08:18:00,093 INFO L413 NwaCegarLoop]: 161 mSDtfsCounter, 382 mSDsluCounter, 3536 mSDsCounter, 0 mSdLazyCounter, 5113 mSolverCounterSat, 71 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 383 SdHoareTripleChecker+Valid, 3697 SdHoareTripleChecker+Invalid, 5184 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 71 IncrementalHoareTripleChecker+Valid, 5113 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.8s IncrementalHoareTripleChecker+Time [2022-12-14 08:18:00,094 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [383 Valid, 3697 Invalid, 5184 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [71 Valid, 5113 Invalid, 0 Unknown, 0 Unchecked, 13.8s Time] [2022-12-14 08:18:00,094 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 497 states. [2022-12-14 08:18:00,450 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 497 to 313. [2022-12-14 08:18:00,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 313 states, 279 states have (on average 1.5806451612903225) internal successors, (441), 281 states have internal predecessors, (441), 20 states have call successors, (20), 14 states have call predecessors, (20), 13 states have return successors, (20), 17 states have call predecessors, (20), 19 states have call successors, (20) [2022-12-14 08:18:00,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 313 states to 313 states and 481 transitions. [2022-12-14 08:18:00,453 INFO L78 Accepts]: Start accepts. Automaton has 313 states and 481 transitions. Word has length 58 [2022-12-14 08:18:00,453 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 08:18:00,453 INFO L495 AbstractCegarLoop]: Abstraction has 313 states and 481 transitions. [2022-12-14 08:18:00,453 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 27 states have (on average 1.1481481481481481) internal successors, (31), 25 states have internal predecessors, (31), 10 states have call successors, (10), 7 states have call predecessors, (10), 5 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2022-12-14 08:18:00,454 INFO L276 IsEmpty]: Start isEmpty. Operand 313 states and 481 transitions. [2022-12-14 08:18:00,455 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2022-12-14 08:18:00,455 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 08:18:00,455 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 08:18:00,460 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89398cd7-afce-4f6c-8c7c-ff24172ed33b/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-12-14 08:18:00,656 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89398cd7-afce-4f6c-8c7c-ff24172ed33b/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 08:18:00,657 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 08:18:00,658 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 08:18:00,658 INFO L85 PathProgramCache]: Analyzing trace with hash 409808728, now seen corresponding path program 1 times [2022-12-14 08:18:00,659 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 08:18:00,659 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1013322213] [2022-12-14 08:18:00,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 08:18:00,660 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 08:18:00,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 08:18:00,803 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 5 proven. 2 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-12-14 08:18:00,803 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 08:18:00,803 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1013322213] [2022-12-14 08:18:00,804 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1013322213] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 08:18:00,804 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [337390206] [2022-12-14 08:18:00,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 08:18:00,804 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 08:18:00,804 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89398cd7-afce-4f6c-8c7c-ff24172ed33b/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 08:18:00,805 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89398cd7-afce-4f6c-8c7c-ff24172ed33b/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 08:18:00,806 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89398cd7-afce-4f6c-8c7c-ff24172ed33b/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-12-14 08:18:00,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 08:18:00,950 INFO L263 TraceCheckSpWp]: Trace formula consists of 807 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-14 08:18:00,952 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 08:18:00,979 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-12-14 08:18:00,979 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 08:18:01,023 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-12-14 08:18:01,023 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [337390206] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 08:18:01,024 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [479252375] [2022-12-14 08:18:01,026 INFO L159 IcfgInterpreter]: Started Sifa with 46 locations of interest [2022-12-14 08:18:01,026 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 08:18:01,027 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 08:18:01,027 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 08:18:01,027 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 08:18:22,811 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 451 for LOIs [2022-12-14 08:18:23,097 INFO L197 IcfgInterpreter]: Interpreting procedure sendEmail with input of size 248 for LOIs [2022-12-14 08:18:24,457 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailTo with input of size 238 for LOIs [2022-12-14 08:18:24,493 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing with input of size 248 for LOIs [2022-12-14 08:18:27,439 INFO L197 IcfgInterpreter]: Interpreting procedure isReadable with input of size 244 for LOIs [2022-12-14 08:18:27,469 INFO L197 IcfgInterpreter]: Interpreting procedure getEmailTo with input of size 241 for LOIs [2022-12-14 08:18:27,505 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailFrom with input of size 477 for LOIs [2022-12-14 08:18:29,226 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 08:19:43,217 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [479252375] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 08:19:43,217 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-12-14 08:19:43,218 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [42] imperfect sequences [6, 5, 5] total 51 [2022-12-14 08:19:43,218 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1563046042] [2022-12-14 08:19:43,218 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 08:19:43,218 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2022-12-14 08:19:43,218 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 08:19:43,219 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2022-12-14 08:19:43,219 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=159, Invalid=2391, Unknown=0, NotChecked=0, Total=2550 [2022-12-14 08:19:43,219 INFO L87 Difference]: Start difference. First operand 313 states and 481 transitions. Second operand has 43 states, 29 states have (on average 1.103448275862069) internal successors, (32), 27 states have internal predecessors, (32), 10 states have call successors, (10), 7 states have call predecessors, (10), 5 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2022-12-14 08:20:30,266 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 08:20:30,266 INFO L93 Difference]: Finished difference Result 727 states and 1151 transitions. [2022-12-14 08:20:30,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2022-12-14 08:20:30,267 INFO L78 Accepts]: Start accepts. Automaton has has 43 states, 29 states have (on average 1.103448275862069) internal successors, (32), 27 states have internal predecessors, (32), 10 states have call successors, (10), 7 states have call predecessors, (10), 5 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) Word has length 58 [2022-12-14 08:20:30,268 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 08:20:30,270 INFO L225 Difference]: With dead ends: 727 [2022-12-14 08:20:30,270 INFO L226 Difference]: Without dead ends: 567 [2022-12-14 08:20:30,272 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 195 GetRequests, 128 SyntacticMatches, 2 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 749 ImplicationChecksByTransitivity, 111.7s TimeCoverageRelationStatistics Valid=333, Invalid=4089, Unknown=0, NotChecked=0, Total=4422 [2022-12-14 08:20:30,273 INFO L413 NwaCegarLoop]: 132 mSDtfsCounter, 464 mSDsluCounter, 2281 mSDsCounter, 0 mSdLazyCounter, 3358 mSolverCounterSat, 68 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 465 SdHoareTripleChecker+Valid, 2413 SdHoareTripleChecker+Invalid, 3426 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 68 IncrementalHoareTripleChecker+Valid, 3358 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.3s IncrementalHoareTripleChecker+Time [2022-12-14 08:20:30,273 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [465 Valid, 2413 Invalid, 3426 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [68 Valid, 3358 Invalid, 0 Unknown, 0 Unchecked, 8.3s Time] [2022-12-14 08:20:30,274 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 567 states. [2022-12-14 08:20:30,699 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 567 to 337. [2022-12-14 08:20:30,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 337 states, 303 states have (on average 1.5874587458745875) internal successors, (481), 305 states have internal predecessors, (481), 20 states have call successors, (20), 14 states have call predecessors, (20), 13 states have return successors, (20), 17 states have call predecessors, (20), 19 states have call successors, (20) [2022-12-14 08:20:30,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 337 states to 337 states and 521 transitions. [2022-12-14 08:20:30,700 INFO L78 Accepts]: Start accepts. Automaton has 337 states and 521 transitions. Word has length 58 [2022-12-14 08:20:30,701 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 08:20:30,701 INFO L495 AbstractCegarLoop]: Abstraction has 337 states and 521 transitions. [2022-12-14 08:20:30,701 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 29 states have (on average 1.103448275862069) internal successors, (32), 27 states have internal predecessors, (32), 10 states have call successors, (10), 7 states have call predecessors, (10), 5 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2022-12-14 08:20:30,701 INFO L276 IsEmpty]: Start isEmpty. Operand 337 states and 521 transitions. [2022-12-14 08:20:30,702 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2022-12-14 08:20:30,702 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 08:20:30,702 INFO L195 NwaCegarLoop]: trace histogram [4, 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] [2022-12-14 08:20:30,707 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89398cd7-afce-4f6c-8c7c-ff24172ed33b/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2022-12-14 08:20:30,903 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89398cd7-afce-4f6c-8c7c-ff24172ed33b/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 08:20:30,904 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 08:20:30,905 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 08:20:30,906 INFO L85 PathProgramCache]: Analyzing trace with hash 731712991, now seen corresponding path program 1 times [2022-12-14 08:20:30,906 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 08:20:30,906 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1655498968] [2022-12-14 08:20:30,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 08:20:30,907 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 08:20:30,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 08:20:31,024 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-12-14 08:20:31,024 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 08:20:31,024 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1655498968] [2022-12-14 08:20:31,024 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1655498968] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 08:20:31,025 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1327469512] [2022-12-14 08:20:31,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 08:20:31,025 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 08:20:31,025 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89398cd7-afce-4f6c-8c7c-ff24172ed33b/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 08:20:31,026 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89398cd7-afce-4f6c-8c7c-ff24172ed33b/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 08:20:31,027 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89398cd7-afce-4f6c-8c7c-ff24172ed33b/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-12-14 08:20:31,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 08:20:31,180 INFO L263 TraceCheckSpWp]: Trace formula consists of 806 conjuncts, 5 conjunts are in the unsatisfiable core [2022-12-14 08:20:31,182 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 08:20:31,211 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-12-14 08:20:31,211 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 08:20:31,249 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-12-14 08:20:31,250 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1327469512] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 08:20:31,250 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [332042758] [2022-12-14 08:20:31,251 INFO L159 IcfgInterpreter]: Started Sifa with 46 locations of interest [2022-12-14 08:20:31,251 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 08:20:31,251 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 08:20:31,252 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 08:20:31,252 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 08:20:56,764 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 451 for LOIs [2022-12-14 08:20:57,058 INFO L197 IcfgInterpreter]: Interpreting procedure sendEmail with input of size 248 for LOIs [2022-12-14 08:20:58,400 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailTo with input of size 238 for LOIs [2022-12-14 08:20:58,438 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing with input of size 250 for LOIs [2022-12-14 08:21:01,565 INFO L197 IcfgInterpreter]: Interpreting procedure isReadable with input of size 244 for LOIs [2022-12-14 08:21:01,595 INFO L197 IcfgInterpreter]: Interpreting procedure getEmailTo with input of size 241 for LOIs [2022-12-14 08:21:01,631 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailFrom with input of size 477 for LOIs [2022-12-14 08:21:03,376 INFO L180 IcfgInterpreter]: Interpretation finished