./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/email_spec0_product11.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version aef121e0 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e4482a0-5459-4d4b-9cb4-6c8a9cd5766f/bin/utaipan-EQgc7hIp5V/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e4482a0-5459-4d4b-9cb4-6c8a9cd5766f/bin/utaipan-EQgc7hIp5V/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e4482a0-5459-4d4b-9cb4-6c8a9cd5766f/bin/utaipan-EQgc7hIp5V/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e4482a0-5459-4d4b-9cb4-6c8a9cd5766f/bin/utaipan-EQgc7hIp5V/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/email_spec0_product11.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e4482a0-5459-4d4b-9cb4-6c8a9cd5766f/bin/utaipan-EQgc7hIp5V/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e4482a0-5459-4d4b-9cb4-6c8a9cd5766f/bin/utaipan-EQgc7hIp5V --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 0a22b5b7c3f7f6e8ff7182918ba517a92e8c6204e4a486ab05fe09fb2404c376 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-aef121e [2021-11-23 03:38:36,083 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-23 03:38:36,086 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-23 03:38:36,156 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-23 03:38:36,157 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-23 03:38:36,161 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-23 03:38:36,163 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-23 03:38:36,167 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-23 03:38:36,170 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-23 03:38:36,175 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-23 03:38:36,177 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-23 03:38:36,178 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-23 03:38:36,179 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-23 03:38:36,182 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-23 03:38:36,184 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-23 03:38:36,189 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-23 03:38:36,190 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-23 03:38:36,192 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-23 03:38:36,194 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-23 03:38:36,202 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-23 03:38:36,204 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-23 03:38:36,206 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-23 03:38:36,209 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-23 03:38:36,210 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-23 03:38:36,219 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-23 03:38:36,220 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-23 03:38:36,220 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-23 03:38:36,223 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-23 03:38:36,224 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-23 03:38:36,225 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-23 03:38:36,226 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-23 03:38:36,227 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-23 03:38:36,229 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-23 03:38:36,230 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-23 03:38:36,232 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-23 03:38:36,232 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-23 03:38:36,233 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-23 03:38:36,234 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-23 03:38:36,234 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-23 03:38:36,235 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-23 03:38:36,236 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-23 03:38:36,237 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e4482a0-5459-4d4b-9cb4-6c8a9cd5766f/bin/utaipan-EQgc7hIp5V/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-23 03:38:36,281 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-23 03:38:36,282 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-23 03:38:36,282 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-23 03:38:36,283 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-23 03:38:36,284 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-23 03:38:36,284 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-23 03:38:36,284 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-23 03:38:36,285 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-23 03:38:36,285 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-23 03:38:36,285 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-23 03:38:36,286 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-23 03:38:36,286 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-23 03:38:36,287 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-23 03:38:36,287 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-23 03:38:36,287 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-23 03:38:36,287 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-23 03:38:36,288 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-23 03:38:36,288 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-23 03:38:36,289 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-23 03:38:36,289 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-23 03:38:36,289 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-23 03:38:36,289 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-23 03:38:36,290 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-23 03:38:36,290 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-23 03:38:36,290 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-23 03:38:36,290 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-23 03:38:36,292 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-23 03:38:36,292 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-23 03:38:36,293 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-23 03:38:36,293 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-23 03:38:36,293 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-23 03:38:36,294 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-23 03:38:36,294 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 03:38:36,294 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-23 03:38:36,294 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-23 03:38:36,295 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-23 03:38:36,295 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-23 03:38:36,295 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-23 03:38:36,295 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-23 03:38:36,296 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-23 03:38:36,296 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-23 03:38:36,296 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES 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_6e4482a0-5459-4d4b-9cb4-6c8a9cd5766f/bin/utaipan-EQgc7hIp5V/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e4482a0-5459-4d4b-9cb4-6c8a9cd5766f/bin/utaipan-EQgc7hIp5V Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0a22b5b7c3f7f6e8ff7182918ba517a92e8c6204e4a486ab05fe09fb2404c376 [2021-11-23 03:38:36,575 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-23 03:38:36,596 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-23 03:38:36,598 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-23 03:38:36,600 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-23 03:38:36,600 INFO L275 PluginConnector]: CDTParser initialized [2021-11-23 03:38:36,602 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e4482a0-5459-4d4b-9cb4-6c8a9cd5766f/bin/utaipan-EQgc7hIp5V/../../sv-benchmarks/c/product-lines/email_spec0_product11.cil.c [2021-11-23 03:38:36,687 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e4482a0-5459-4d4b-9cb4-6c8a9cd5766f/bin/utaipan-EQgc7hIp5V/data/f6dd47497/b2474f677c0641399bafb1fa73e81790/FLAG4921f0f20 [2021-11-23 03:38:37,426 INFO L306 CDTParser]: Found 1 translation units. [2021-11-23 03:38:37,426 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e4482a0-5459-4d4b-9cb4-6c8a9cd5766f/sv-benchmarks/c/product-lines/email_spec0_product11.cil.c [2021-11-23 03:38:37,448 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e4482a0-5459-4d4b-9cb4-6c8a9cd5766f/bin/utaipan-EQgc7hIp5V/data/f6dd47497/b2474f677c0641399bafb1fa73e81790/FLAG4921f0f20 [2021-11-23 03:38:37,632 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e4482a0-5459-4d4b-9cb4-6c8a9cd5766f/bin/utaipan-EQgc7hIp5V/data/f6dd47497/b2474f677c0641399bafb1fa73e81790 [2021-11-23 03:38:37,636 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-23 03:38:37,637 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-23 03:38:37,641 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-23 03:38:37,641 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-23 03:38:37,646 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-23 03:38:37,646 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 03:38:37" (1/1) ... [2021-11-23 03:38:37,648 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2351032d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:38:37, skipping insertion in model container [2021-11-23 03:38:37,648 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 03:38:37" (1/1) ... [2021-11-23 03:38:37,656 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-23 03:38:37,737 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-23 03:38:38,298 WARN L230 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_6e4482a0-5459-4d4b-9cb4-6c8a9cd5766f/sv-benchmarks/c/product-lines/email_spec0_product11.cil.c[59717,59730] [2021-11-23 03:38:38,304 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 03:38:38,316 INFO L203 MainTranslator]: Completed pre-run [2021-11-23 03:38:38,427 WARN L230 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_6e4482a0-5459-4d4b-9cb4-6c8a9cd5766f/sv-benchmarks/c/product-lines/email_spec0_product11.cil.c[59717,59730] [2021-11-23 03:38:38,433 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 03:38:38,472 INFO L208 MainTranslator]: Completed translation [2021-11-23 03:38:38,473 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:38:38 WrapperNode [2021-11-23 03:38:38,473 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-23 03:38:38,474 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-23 03:38:38,475 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-23 03:38:38,475 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-23 03:38:38,483 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:38:38" (1/1) ... [2021-11-23 03:38:38,510 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:38:38" (1/1) ... [2021-11-23 03:38:38,586 INFO L137 Inliner]: procedures = 121, calls = 176, calls flagged for inlining = 48, calls inlined = 43, statements flattened = 792 [2021-11-23 03:38:38,586 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-23 03:38:38,587 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-23 03:38:38,587 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-23 03:38:38,587 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-23 03:38:38,598 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:38:38" (1/1) ... [2021-11-23 03:38:38,598 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:38:38" (1/1) ... [2021-11-23 03:38:38,603 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:38:38" (1/1) ... [2021-11-23 03:38:38,603 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:38:38" (1/1) ... [2021-11-23 03:38:38,631 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:38:38" (1/1) ... [2021-11-23 03:38:38,639 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:38:38" (1/1) ... [2021-11-23 03:38:38,645 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:38:38" (1/1) ... [2021-11-23 03:38:38,663 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-23 03:38:38,671 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-23 03:38:38,671 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-23 03:38:38,672 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-23 03:38:38,683 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:38:38" (1/1) ... [2021-11-23 03:38:38,690 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 03:38:38,699 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e4482a0-5459-4d4b-9cb4-6c8a9cd5766f/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 03:38:38,711 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e4482a0-5459-4d4b-9cb4-6c8a9cd5766f/bin/utaipan-EQgc7hIp5V/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-23 03:38:38,717 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e4482a0-5459-4d4b-9cb4-6c8a9cd5766f/bin/utaipan-EQgc7hIp5V/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-23 03:38:38,752 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2021-11-23 03:38:38,752 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2021-11-23 03:38:38,752 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2021-11-23 03:38:38,753 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2021-11-23 03:38:38,753 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable [2021-11-23 03:38:38,753 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable [2021-11-23 03:38:38,753 INFO L130 BoogieDeclarations]: Found specification of procedure createClientKeyringEntry [2021-11-23 03:38:38,753 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientKeyringEntry [2021-11-23 03:38:38,753 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAdd [2021-11-23 03:38:38,754 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAdd [2021-11-23 03:38:38,754 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2021-11-23 03:38:38,754 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2021-11-23 03:38:38,754 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2021-11-23 03:38:38,754 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-23 03:38:38,755 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringUser [2021-11-23 03:38:38,755 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringUser [2021-11-23 03:38:38,755 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringPublicKey [2021-11-23 03:38:38,755 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringPublicKey [2021-11-23 03:38:38,755 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2021-11-23 03:38:38,756 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2021-11-23 03:38:38,756 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2021-11-23 03:38:38,756 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2021-11-23 03:38:38,756 INFO L130 BoogieDeclarations]: Found specification of procedure setClientPrivateKey [2021-11-23 03:38:38,756 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientPrivateKey [2021-11-23 03:38:38,757 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailTo [2021-11-23 03:38:38,757 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailTo [2021-11-23 03:38:38,757 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-23 03:38:38,757 INFO L130 BoogieDeclarations]: Found specification of procedure generateKeyPair [2021-11-23 03:38:38,757 INFO L138 BoogieDeclarations]: Found implementation of procedure generateKeyPair [2021-11-23 03:38:38,758 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-23 03:38:38,758 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-23 03:38:38,994 INFO L236 CfgBuilder]: Building ICFG [2021-11-23 03:38:38,996 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-23 03:38:39,590 INFO L277 CfgBuilder]: Performing block encoding [2021-11-23 03:38:39,873 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-23 03:38:39,874 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-11-23 03:38:39,876 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 03:38:39 BoogieIcfgContainer [2021-11-23 03:38:39,877 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-23 03:38:39,878 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-23 03:38:39,879 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-23 03:38:39,882 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-23 03:38:39,882 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 03:38:37" (1/3) ... [2021-11-23 03:38:39,884 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4f34b482 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 03:38:39, skipping insertion in model container [2021-11-23 03:38:39,884 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:38:38" (2/3) ... [2021-11-23 03:38:39,884 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4f34b482 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 03:38:39, skipping insertion in model container [2021-11-23 03:38:39,885 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 03:38:39" (3/3) ... [2021-11-23 03:38:39,886 INFO L111 eAbstractionObserver]: Analyzing ICFG email_spec0_product11.cil.c [2021-11-23 03:38:39,892 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-23 03:38:39,893 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-23 03:38:39,945 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-23 03:38:39,952 INFO L339 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, mLoopAccelerationTechnique=FAST_UPR [2021-11-23 03:38:39,953 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-23 03:38:39,975 INFO L276 IsEmpty]: Start isEmpty. Operand has 126 states, 76 states have (on average 1.381578947368421) internal successors, (105), 78 states have internal predecessors, (105), 35 states have call successors, (35), 13 states have call predecessors, (35), 13 states have return successors, (35), 35 states have call predecessors, (35), 35 states have call successors, (35) [2021-11-23 03:38:39,984 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2021-11-23 03:38:39,985 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:38:39,986 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:38:39,986 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 03:38:39,992 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:38:39,992 INFO L85 PathProgramCache]: Analyzing trace with hash -993266834, now seen corresponding path program 1 times [2021-11-23 03:38:40,002 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:38:40,003 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1512148877] [2021-11-23 03:38:40,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:38:40,004 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:38:40,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:38:40,339 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2021-11-23 03:38:40,339 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:38:40,340 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1512148877] [2021-11-23 03:38:40,340 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1512148877] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:38:40,341 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:38:40,341 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-23 03:38:40,343 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [386640757] [2021-11-23 03:38:40,345 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:38:40,351 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-23 03:38:40,352 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:38:40,387 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-23 03:38:40,388 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-23 03:38:40,392 INFO L87 Difference]: Start difference. First operand has 126 states, 76 states have (on average 1.381578947368421) internal successors, (105), 78 states have internal predecessors, (105), 35 states have call successors, (35), 13 states have call predecessors, (35), 13 states have return successors, (35), 35 states have call predecessors, (35), 35 states have call successors, (35) Second operand has 2 states, 2 states have (on average 13.0) internal successors, (26), 2 states have internal predecessors, (26), 2 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2021-11-23 03:38:40,517 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:38:40,517 INFO L93 Difference]: Finished difference Result 169 states and 228 transitions. [2021-11-23 03:38:40,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-23 03:38:40,520 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 13.0) internal successors, (26), 2 states have internal predecessors, (26), 2 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 58 [2021-11-23 03:38:40,521 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:38:40,530 INFO L225 Difference]: With dead ends: 169 [2021-11-23 03:38:40,531 INFO L226 Difference]: Without dead ends: 123 [2021-11-23 03:38:40,538 INFO L932 BasicCegarLoop]: 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 [2021-11-23 03:38:40,543 INFO L933 BasicCegarLoop]: 149 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 149 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 03:38:40,545 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 149 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 03:38:40,587 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2021-11-23 03:38:40,631 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 123. [2021-11-23 03:38:40,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 123 states, 74 states have (on average 1.337837837837838) internal successors, (99), 75 states have internal predecessors, (99), 35 states have call successors, (35), 13 states have call predecessors, (35), 13 states have return successors, (34), 34 states have call predecessors, (34), 34 states have call successors, (34) [2021-11-23 03:38:40,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 168 transitions. [2021-11-23 03:38:40,639 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 168 transitions. Word has length 58 [2021-11-23 03:38:40,641 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:38:40,641 INFO L470 AbstractCegarLoop]: Abstraction has 123 states and 168 transitions. [2021-11-23 03:38:40,642 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 13.0) internal successors, (26), 2 states have internal predecessors, (26), 2 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2021-11-23 03:38:40,642 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 168 transitions. [2021-11-23 03:38:40,646 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2021-11-23 03:38:40,646 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:38:40,646 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:38:40,647 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-23 03:38:40,647 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 03:38:40,648 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:38:40,648 INFO L85 PathProgramCache]: Analyzing trace with hash 2094361572, now seen corresponding path program 1 times [2021-11-23 03:38:40,648 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:38:40,649 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1155612264] [2021-11-23 03:38:40,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:38:40,649 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:38:40,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:38:40,796 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2021-11-23 03:38:40,799 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:38:40,800 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1155612264] [2021-11-23 03:38:40,800 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1155612264] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:38:40,800 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:38:40,801 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 03:38:40,801 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [820873941] [2021-11-23 03:38:40,802 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:38:40,805 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 03:38:40,806 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:38:40,812 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 03:38:40,813 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 03:38:40,813 INFO L87 Difference]: Start difference. First operand 123 states and 168 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, (14), 2 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2021-11-23 03:38:40,936 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:38:40,937 INFO L93 Difference]: Finished difference Result 165 states and 216 transitions. [2021-11-23 03:38:40,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 03:38:40,937 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, (14), 2 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 59 [2021-11-23 03:38:40,938 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:38:40,945 INFO L225 Difference]: With dead ends: 165 [2021-11-23 03:38:40,946 INFO L226 Difference]: Without dead ends: 125 [2021-11-23 03:38:40,949 INFO L932 BasicCegarLoop]: 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 [2021-11-23 03:38:40,952 INFO L933 BasicCegarLoop]: 146 mSDtfsCounter, 0 mSDsluCounter, 165 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 291 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 03:38:40,953 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 291 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 03:38:40,955 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2021-11-23 03:38:40,976 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 125. [2021-11-23 03:38:40,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 125 states, 76 states have (on average 1.3289473684210527) internal successors, (101), 77 states have internal predecessors, (101), 35 states have call successors, (35), 13 states have call predecessors, (35), 13 states have return successors, (34), 34 states have call predecessors, (34), 34 states have call successors, (34) [2021-11-23 03:38:40,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 170 transitions. [2021-11-23 03:38:40,986 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 170 transitions. Word has length 59 [2021-11-23 03:38:40,986 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:38:40,988 INFO L470 AbstractCegarLoop]: Abstraction has 125 states and 170 transitions. [2021-11-23 03:38:40,988 INFO L471 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, (14), 2 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2021-11-23 03:38:40,988 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 170 transitions. [2021-11-23 03:38:40,997 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2021-11-23 03:38:40,999 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:38:41,000 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:38:41,000 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-23 03:38:41,001 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 03:38:41,001 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:38:41,002 INFO L85 PathProgramCache]: Analyzing trace with hash -423400472, now seen corresponding path program 1 times [2021-11-23 03:38:41,002 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:38:41,003 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [505499334] [2021-11-23 03:38:41,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:38:41,003 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:38:41,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:38:41,161 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2021-11-23 03:38:41,162 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:38:41,162 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [505499334] [2021-11-23 03:38:41,162 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [505499334] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:38:41,163 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:38:41,163 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 03:38:41,163 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [681234778] [2021-11-23 03:38:41,164 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:38:41,164 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 03:38:41,165 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:38:41,166 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 03:38:41,166 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 03:38:41,167 INFO L87 Difference]: Start difference. First operand 125 states and 170 transitions. Second operand has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 2 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2021-11-23 03:38:41,298 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:38:41,298 INFO L93 Difference]: Finished difference Result 280 states and 399 transitions. [2021-11-23 03:38:41,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 03:38:41,298 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 2 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 64 [2021-11-23 03:38:41,299 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:38:41,301 INFO L225 Difference]: With dead ends: 280 [2021-11-23 03:38:41,301 INFO L226 Difference]: Without dead ends: 173 [2021-11-23 03:38:41,303 INFO L932 BasicCegarLoop]: 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 [2021-11-23 03:38:41,304 INFO L933 BasicCegarLoop]: 163 mSDtfsCounter, 57 mSDsluCounter, 160 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 303 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 03:38:41,304 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [72 Valid, 303 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 03:38:41,306 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 173 states. [2021-11-23 03:38:41,325 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 173 to 168. [2021-11-23 03:38:41,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 168 states, 108 states have (on average 1.4259259259259258) internal successors, (154), 109 states have internal predecessors, (154), 46 states have call successors, (46), 13 states have call predecessors, (46), 13 states have return successors, (45), 45 states have call predecessors, (45), 45 states have call successors, (45) [2021-11-23 03:38:41,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 168 states to 168 states and 245 transitions. [2021-11-23 03:38:41,328 INFO L78 Accepts]: Start accepts. Automaton has 168 states and 245 transitions. Word has length 64 [2021-11-23 03:38:41,328 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:38:41,329 INFO L470 AbstractCegarLoop]: Abstraction has 168 states and 245 transitions. [2021-11-23 03:38:41,329 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 2 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2021-11-23 03:38:41,329 INFO L276 IsEmpty]: Start isEmpty. Operand 168 states and 245 transitions. [2021-11-23 03:38:41,331 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-11-23 03:38:41,331 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:38:41,331 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:38:41,332 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-23 03:38:41,332 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 03:38:41,332 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:38:41,333 INFO L85 PathProgramCache]: Analyzing trace with hash -386440073, now seen corresponding path program 1 times [2021-11-23 03:38:41,333 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:38:41,333 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2085152705] [2021-11-23 03:38:41,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:38:41,333 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:38:41,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:38:41,472 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2021-11-23 03:38:41,473 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:38:41,473 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2085152705] [2021-11-23 03:38:41,473 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2085152705] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-23 03:38:41,473 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1222001673] [2021-11-23 03:38:41,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:38:41,474 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 03:38:41,474 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e4482a0-5459-4d4b-9cb4-6c8a9cd5766f/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 03:38:41,477 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e4482a0-5459-4d4b-9cb4-6c8a9cd5766f/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 03:38:41,494 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e4482a0-5459-4d4b-9cb4-6c8a9cd5766f/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-23 03:38:41,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:38:41,732 INFO L263 TraceCheckSpWp]: Trace formula consists of 895 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-23 03:38:41,741 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 03:38:41,924 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2021-11-23 03:38:41,925 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 03:38:42,087 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2021-11-23 03:38:42,088 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1222001673] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 03:38:42,088 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [238992974] [2021-11-23 03:38:42,111 INFO L159 IcfgInterpreter]: Started Sifa with 52 locations of interest [2021-11-23 03:38:42,112 INFO L166 IcfgInterpreter]: Building call graph [2021-11-23 03:38:42,117 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-23 03:38:42,123 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-23 03:38:42,123 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-23 03:39:11,692 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 444 for LOIs [2021-11-23 03:39:11,974 INFO L197 IcfgInterpreter]: Interpreting procedure setClientPrivateKey with input of size 441 for LOIs [2021-11-23 03:39:12,241 INFO L197 IcfgInterpreter]: Interpreting procedure sendEmail with input of size 460 for LOIs [2021-11-23 03:39:30,185 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing with input of size 458 for LOIs [2021-11-23 03:39:34,520 INFO L197 IcfgInterpreter]: Interpreting procedure getEmailTo with input of size 237 for LOIs [2021-11-23 03:39:34,569 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailFrom with input of size 234 for LOIs [2021-11-23 03:39:34,671 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailTo with input of size 450 for LOIs [2021-11-23 03:39:34,923 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-23 03:41:02,305 WARN L227 SmtUtils]: Spent 5.33s on a formula simplification. DAG size of input: 502 DAG size of output: 345 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 03:41:36,934 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSifa [238992974] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:41:36,935 INFO L186 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2021-11-23 03:41:36,935 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [39] imperfect sequences [4, 4, 4] total 45 [2021-11-23 03:41:36,936 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [169010624] [2021-11-23 03:41:36,936 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:41:36,937 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2021-11-23 03:41:36,937 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:41:36,938 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2021-11-23 03:41:36,939 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=130, Invalid=1850, Unknown=0, NotChecked=0, Total=1980 [2021-11-23 03:41:36,939 INFO L87 Difference]: Start difference. First operand 168 states and 245 transitions. Second operand has 40 states, 27 states have (on average 1.1851851851851851) internal successors, (32), 25 states have internal predecessors, (32), 13 states have call successors, (14), 8 states have call predecessors, (14), 6 states have return successors, (12), 11 states have call predecessors, (12), 11 states have call successors, (12) [2021-11-23 03:41:57,036 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:41:57,036 INFO L93 Difference]: Finished difference Result 437 states and 681 transitions. [2021-11-23 03:41:57,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2021-11-23 03:41:57,036 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 27 states have (on average 1.1851851851851851) internal successors, (32), 25 states have internal predecessors, (32), 13 states have call successors, (14), 8 states have call predecessors, (14), 6 states have return successors, (12), 11 states have call predecessors, (12), 11 states have call successors, (12) Word has length 65 [2021-11-23 03:41:57,037 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:41:57,041 INFO L225 Difference]: With dead ends: 437 [2021-11-23 03:41:57,042 INFO L226 Difference]: Without dead ends: 287 [2021-11-23 03:41:57,044 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 201 GetRequests, 154 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 539 ImplicationChecksByTransitivity, 131.9s TimeCoverageRelationStatistics Valid=169, Invalid=2183, Unknown=0, NotChecked=0, Total=2352 [2021-11-23 03:41:57,046 INFO L933 BasicCegarLoop]: 182 mSDtfsCounter, 190 mSDsluCounter, 3467 mSDsCounter, 0 mSdLazyCounter, 3957 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 191 SdHoareTripleChecker+Valid, 3576 SdHoareTripleChecker+Invalid, 3977 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 3957 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.9s IncrementalHoareTripleChecker+Time [2021-11-23 03:41:57,046 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [191 Valid, 3576 Invalid, 3977 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [20 Valid, 3957 Invalid, 0 Unknown, 0 Unchecked, 9.9s Time] [2021-11-23 03:41:57,047 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 287 states. [2021-11-23 03:41:57,142 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 287 to 238. [2021-11-23 03:41:57,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 238 states, 167 states have (on average 1.4790419161676647) internal successors, (247), 169 states have internal predecessors, (247), 52 states have call successors, (52), 19 states have call predecessors, (52), 18 states have return successors, (51), 49 states have call predecessors, (51), 51 states have call successors, (51) [2021-11-23 03:41:57,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 238 states to 238 states and 350 transitions. [2021-11-23 03:41:57,146 INFO L78 Accepts]: Start accepts. Automaton has 238 states and 350 transitions. Word has length 65 [2021-11-23 03:41:57,147 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:41:57,147 INFO L470 AbstractCegarLoop]: Abstraction has 238 states and 350 transitions. [2021-11-23 03:41:57,147 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 27 states have (on average 1.1851851851851851) internal successors, (32), 25 states have internal predecessors, (32), 13 states have call successors, (14), 8 states have call predecessors, (14), 6 states have return successors, (12), 11 states have call predecessors, (12), 11 states have call successors, (12) [2021-11-23 03:41:57,147 INFO L276 IsEmpty]: Start isEmpty. Operand 238 states and 350 transitions. [2021-11-23 03:41:57,150 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2021-11-23 03:41:57,150 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:41:57,150 INFO L514 BasicCegarLoop]: trace histogram [4, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:41:57,189 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e4482a0-5459-4d4b-9cb4-6c8a9cd5766f/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-23 03:41:57,366 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e4482a0-5459-4d4b-9cb4-6c8a9cd5766f/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 03:41:57,366 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 03:41:57,367 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:41:57,367 INFO L85 PathProgramCache]: Analyzing trace with hash -750614438, now seen corresponding path program 1 times [2021-11-23 03:41:57,367 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:41:57,367 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [912928816] [2021-11-23 03:41:57,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:41:57,367 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:41:57,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:41:57,492 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2021-11-23 03:41:57,493 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:41:57,493 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [912928816] [2021-11-23 03:41:57,493 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [912928816] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:41:57,493 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:41:57,493 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 03:41:57,493 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [935460512] [2021-11-23 03:41:57,494 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:41:57,494 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 03:41:57,494 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:41:57,495 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 03:41:57,495 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 03:41:57,495 INFO L87 Difference]: Start difference. First operand 238 states and 350 transitions. Second operand has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 3 states have internal predecessors, (35), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2021-11-23 03:41:57,703 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:41:57,703 INFO L93 Difference]: Finished difference Result 590 states and 906 transitions. [2021-11-23 03:41:57,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 03:41:57,704 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 3 states have internal predecessors, (35), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 70 [2021-11-23 03:41:57,705 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:41:57,713 INFO L225 Difference]: With dead ends: 590 [2021-11-23 03:41:57,713 INFO L226 Difference]: Without dead ends: 378 [2021-11-23 03:41:57,714 INFO L932 BasicCegarLoop]: 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 [2021-11-23 03:41:57,717 INFO L933 BasicCegarLoop]: 173 mSDtfsCounter, 55 mSDsluCounter, 168 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 70 SdHoareTripleChecker+Valid, 320 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 03:41:57,717 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [70 Valid, 320 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 03:41:57,720 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 378 states. [2021-11-23 03:41:57,868 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 378 to 371. [2021-11-23 03:41:57,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 371 states, 275 states have (on average 1.5418181818181818) internal successors, (424), 277 states have internal predecessors, (424), 77 states have call successors, (77), 19 states have call predecessors, (77), 18 states have return successors, (76), 74 states have call predecessors, (76), 76 states have call successors, (76) [2021-11-23 03:41:57,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 371 states to 371 states and 577 transitions. [2021-11-23 03:41:57,873 INFO L78 Accepts]: Start accepts. Automaton has 371 states and 577 transitions. Word has length 70 [2021-11-23 03:41:57,874 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:41:57,874 INFO L470 AbstractCegarLoop]: Abstraction has 371 states and 577 transitions. [2021-11-23 03:41:57,874 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 3 states have internal predecessors, (35), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2021-11-23 03:41:57,874 INFO L276 IsEmpty]: Start isEmpty. Operand 371 states and 577 transitions. [2021-11-23 03:41:57,879 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2021-11-23 03:41:57,879 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:41:57,879 INFO L514 BasicCegarLoop]: trace histogram [4, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:41:57,879 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-23 03:41:57,880 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 03:41:57,881 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:41:57,881 INFO L85 PathProgramCache]: Analyzing trace with hash -1302949306, now seen corresponding path program 1 times [2021-11-23 03:41:57,881 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:41:57,883 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [689702491] [2021-11-23 03:41:57,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:41:57,884 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:41:57,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:41:58,001 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2021-11-23 03:41:58,001 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:41:58,001 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [689702491] [2021-11-23 03:41:58,002 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [689702491] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-23 03:41:58,002 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1424916657] [2021-11-23 03:41:58,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:41:58,002 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 03:41:58,002 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e4482a0-5459-4d4b-9cb4-6c8a9cd5766f/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 03:41:58,003 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e4482a0-5459-4d4b-9cb4-6c8a9cd5766f/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 03:41:58,012 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e4482a0-5459-4d4b-9cb4-6c8a9cd5766f/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-23 03:41:58,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:41:58,241 INFO L263 TraceCheckSpWp]: Trace formula consists of 925 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-23 03:41:58,245 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 03:41:58,380 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2021-11-23 03:41:58,380 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 03:41:58,549 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2021-11-23 03:41:58,550 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1424916657] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 03:41:58,550 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1254513589] [2021-11-23 03:41:58,554 INFO L159 IcfgInterpreter]: Started Sifa with 56 locations of interest [2021-11-23 03:41:58,555 INFO L166 IcfgInterpreter]: Building call graph [2021-11-23 03:41:58,555 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-23 03:41:58,556 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-23 03:41:58,556 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-23 03:42:28,407 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 439 for LOIs [2021-11-23 03:42:28,657 INFO L197 IcfgInterpreter]: Interpreting procedure setClientPrivateKey with input of size 442 for LOIs [2021-11-23 03:42:28,911 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-23 03:43:20,739 WARN L227 SmtUtils]: Spent 11.37s on a formula simplification. DAG size of input: 583 DAG size of output: 363 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 03:43:40,606 WARN L227 SmtUtils]: Spent 5.59s on a formula simplification. DAG size of input: 584 DAG size of output: 345 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 03:43:40,609 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSifa [1254513589] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:43:40,609 INFO L186 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2021-11-23 03:43:40,610 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [24] imperfect sequences [4, 4, 4] total 30 [2021-11-23 03:43:40,610 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [919891175] [2021-11-23 03:43:40,610 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:43:40,611 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2021-11-23 03:43:40,611 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:43:40,611 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-11-23 03:43:40,612 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=110, Invalid=760, Unknown=0, NotChecked=0, Total=870 [2021-11-23 03:43:40,612 INFO L87 Difference]: Start difference. First operand 371 states and 577 transitions. Second operand has 25 states, 19 states have (on average 1.8421052631578947) internal successors, (35), 18 states have internal predecessors, (35), 8 states have call successors, (15), 3 states have call predecessors, (15), 3 states have return successors, (13), 8 states have call predecessors, (13), 8 states have call successors, (13) [2021-11-23 03:44:00,930 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:44:00,930 INFO L93 Difference]: Finished difference Result 759 states and 1225 transitions. [2021-11-23 03:44:00,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-11-23 03:44:00,930 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 19 states have (on average 1.8421052631578947) internal successors, (35), 18 states have internal predecessors, (35), 8 states have call successors, (15), 3 states have call predecessors, (15), 3 states have return successors, (13), 8 states have call predecessors, (13), 8 states have call successors, (13) Word has length 71 [2021-11-23 03:44:00,931 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:44:00,935 INFO L225 Difference]: With dead ends: 759 [2021-11-23 03:44:00,936 INFO L226 Difference]: Without dead ends: 519 [2021-11-23 03:44:00,937 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 221 GetRequests, 187 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 244 ImplicationChecksByTransitivity, 86.7s TimeCoverageRelationStatistics Valid=169, Invalid=1091, Unknown=0, NotChecked=0, Total=1260 [2021-11-23 03:44:00,938 INFO L933 BasicCegarLoop]: 156 mSDtfsCounter, 158 mSDsluCounter, 1969 mSDsCounter, 0 mSdLazyCounter, 1853 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 158 SdHoareTripleChecker+Valid, 2058 SdHoareTripleChecker+Invalid, 1876 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 1853 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.0s IncrementalHoareTripleChecker+Time [2021-11-23 03:44:00,939 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [158 Valid, 2058 Invalid, 1876 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 1853 Invalid, 0 Unknown, 0 Unchecked, 5.0s Time] [2021-11-23 03:44:00,940 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 519 states. [2021-11-23 03:44:01,081 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 519 to 448. [2021-11-23 03:44:01,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 448 states, 348 states have (on average 1.5660919540229885) internal successors, (545), 352 states have internal predecessors, (545), 80 states have call successors, (80), 20 states have call predecessors, (80), 19 states have return successors, (79), 75 states have call predecessors, (79), 79 states have call successors, (79) [2021-11-23 03:44:01,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 448 states to 448 states and 704 transitions. [2021-11-23 03:44:01,087 INFO L78 Accepts]: Start accepts. Automaton has 448 states and 704 transitions. Word has length 71 [2021-11-23 03:44:01,087 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:44:01,087 INFO L470 AbstractCegarLoop]: Abstraction has 448 states and 704 transitions. [2021-11-23 03:44:01,088 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 19 states have (on average 1.8421052631578947) internal successors, (35), 18 states have internal predecessors, (35), 8 states have call successors, (15), 3 states have call predecessors, (15), 3 states have return successors, (13), 8 states have call predecessors, (13), 8 states have call successors, (13) [2021-11-23 03:44:01,088 INFO L276 IsEmpty]: Start isEmpty. Operand 448 states and 704 transitions. [2021-11-23 03:44:01,090 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2021-11-23 03:44:01,090 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:44:01,091 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:44:01,126 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e4482a0-5459-4d4b-9cb4-6c8a9cd5766f/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-23 03:44:01,313 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e4482a0-5459-4d4b-9cb4-6c8a9cd5766f/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2021-11-23 03:44:01,313 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 03:44:01,313 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:44:01,313 INFO L85 PathProgramCache]: Analyzing trace with hash 401578223, now seen corresponding path program 1 times [2021-11-23 03:44:01,313 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:44:01,314 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1753830925] [2021-11-23 03:44:01,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:44:01,314 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:44:01,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:44:01,423 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2021-11-23 03:44:01,423 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:44:01,423 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1753830925] [2021-11-23 03:44:01,424 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1753830925] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-23 03:44:01,424 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [242364447] [2021-11-23 03:44:01,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:44:01,424 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 03:44:01,424 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e4482a0-5459-4d4b-9cb4-6c8a9cd5766f/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 03:44:01,425 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e4482a0-5459-4d4b-9cb4-6c8a9cd5766f/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 03:44:01,441 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e4482a0-5459-4d4b-9cb4-6c8a9cd5766f/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-23 03:44:01,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:44:01,665 INFO L263 TraceCheckSpWp]: Trace formula consists of 1031 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-23 03:44:01,670 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 03:44:01,772 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2021-11-23 03:44:01,772 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 03:44:01,902 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2021-11-23 03:44:01,902 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [242364447] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 03:44:01,902 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1243987124] [2021-11-23 03:44:01,910 INFO L159 IcfgInterpreter]: Started Sifa with 61 locations of interest [2021-11-23 03:44:01,910 INFO L166 IcfgInterpreter]: Building call graph [2021-11-23 03:44:01,911 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-23 03:44:01,911 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-23 03:44:01,911 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-23 03:44:30,569 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 444 for LOIs [2021-11-23 03:44:30,843 INFO L197 IcfgInterpreter]: Interpreting procedure setClientKeyringPublicKey with input of size 234 for LOIs [2021-11-23 03:44:30,917 INFO L197 IcfgInterpreter]: Interpreting procedure createClientKeyringEntry with input of size 249 for LOIs [2021-11-23 03:44:30,998 INFO L197 IcfgInterpreter]: Interpreting procedure setClientPrivateKey with input of size 441 for LOIs [2021-11-23 03:44:31,245 INFO L197 IcfgInterpreter]: Interpreting procedure setClientKeyringUser with input of size 243 for LOIs [2021-11-23 03:44:31,316 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-23 03:45:25,386 WARN L227 SmtUtils]: Spent 11.23s on a formula simplification. DAG size of input: 623 DAG size of output: 421 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 03:45:43,242 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSifa [1243987124] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:45:43,242 INFO L186 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2021-11-23 03:45:43,242 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [29] imperfect sequences [4, 4, 4] total 35 [2021-11-23 03:45:43,242 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [753589823] [2021-11-23 03:45:43,242 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:45:43,243 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2021-11-23 03:45:43,243 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:45:43,243 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2021-11-23 03:45:43,244 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=110, Invalid=1080, Unknown=0, NotChecked=0, Total=1190 [2021-11-23 03:45:43,244 INFO L87 Difference]: Start difference. First operand 448 states and 704 transitions. Second operand has 30 states, 19 states have (on average 1.8421052631578947) internal successors, (35), 18 states have internal predecessors, (35), 10 states have call successors, (17), 6 states have call predecessors, (17), 6 states have return successors, (15), 10 states have call predecessors, (15), 10 states have call successors, (15) [2021-11-23 03:45:56,935 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:45:56,935 INFO L93 Difference]: Finished difference Result 847 states and 1368 transitions. [2021-11-23 03:45:56,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-11-23 03:45:56,936 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 19 states have (on average 1.8421052631578947) internal successors, (35), 18 states have internal predecessors, (35), 10 states have call successors, (17), 6 states have call predecessors, (17), 6 states have return successors, (15), 10 states have call predecessors, (15), 10 states have call successors, (15) Word has length 74 [2021-11-23 03:45:56,936 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:45:56,941 INFO L225 Difference]: With dead ends: 847 [2021-11-23 03:45:56,942 INFO L226 Difference]: Without dead ends: 607 [2021-11-23 03:45:56,943 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 226 GetRequests, 191 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 276 ImplicationChecksByTransitivity, 77.2s TimeCoverageRelationStatistics Valid=128, Invalid=1204, Unknown=0, NotChecked=0, Total=1332 [2021-11-23 03:45:56,944 INFO L933 BasicCegarLoop]: 159 mSDtfsCounter, 143 mSDsluCounter, 2666 mSDsCounter, 0 mSdLazyCounter, 2721 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 143 SdHoareTripleChecker+Valid, 2746 SdHoareTripleChecker+Invalid, 2737 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 2721 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.0s IncrementalHoareTripleChecker+Time [2021-11-23 03:45:56,945 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [143 Valid, 2746 Invalid, 2737 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [16 Valid, 2721 Invalid, 0 Unknown, 0 Unchecked, 8.0s Time] [2021-11-23 03:45:56,946 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 607 states. [2021-11-23 03:45:57,155 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 607 to 533. [2021-11-23 03:45:57,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 533 states, 425 states have (on average 1.576470588235294) internal successors, (670), 431 states have internal predecessors, (670), 85 states have call successors, (85), 23 states have call predecessors, (85), 22 states have return successors, (84), 78 states have call predecessors, (84), 84 states have call successors, (84) [2021-11-23 03:45:57,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 533 states to 533 states and 839 transitions. [2021-11-23 03:45:57,162 INFO L78 Accepts]: Start accepts. Automaton has 533 states and 839 transitions. Word has length 74 [2021-11-23 03:45:57,163 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:45:57,163 INFO L470 AbstractCegarLoop]: Abstraction has 533 states and 839 transitions. [2021-11-23 03:45:57,163 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 19 states have (on average 1.8421052631578947) internal successors, (35), 18 states have internal predecessors, (35), 10 states have call successors, (17), 6 states have call predecessors, (17), 6 states have return successors, (15), 10 states have call predecessors, (15), 10 states have call successors, (15) [2021-11-23 03:45:57,163 INFO L276 IsEmpty]: Start isEmpty. Operand 533 states and 839 transitions. [2021-11-23 03:45:57,166 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2021-11-23 03:45:57,166 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:45:57,167 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:45:57,197 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e4482a0-5459-4d4b-9cb4-6c8a9cd5766f/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-11-23 03:45:57,380 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e4482a0-5459-4d4b-9cb4-6c8a9cd5766f/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 03:45:57,381 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 03:45:57,381 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:45:57,381 INFO L85 PathProgramCache]: Analyzing trace with hash -745610192, now seen corresponding path program 1 times [2021-11-23 03:45:57,382 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:45:57,382 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1393334736] [2021-11-23 03:45:57,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:45:57,382 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:45:57,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:45:57,449 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2021-11-23 03:45:57,449 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:45:57,449 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1393334736] [2021-11-23 03:45:57,450 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1393334736] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-23 03:45:57,450 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [182145486] [2021-11-23 03:45:57,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:45:57,450 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 03:45:57,450 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e4482a0-5459-4d4b-9cb4-6c8a9cd5766f/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 03:45:57,451 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e4482a0-5459-4d4b-9cb4-6c8a9cd5766f/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 03:45:57,468 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e4482a0-5459-4d4b-9cb4-6c8a9cd5766f/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-23 03:45:57,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:45:57,664 INFO L263 TraceCheckSpWp]: Trace formula consists of 936 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-23 03:45:57,667 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 03:45:57,777 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2021-11-23 03:45:57,778 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 03:45:57,919 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2021-11-23 03:45:57,919 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [182145486] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 03:45:57,919 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [20409097] [2021-11-23 03:45:57,924 INFO L159 IcfgInterpreter]: Started Sifa with 60 locations of interest [2021-11-23 03:45:57,924 INFO L166 IcfgInterpreter]: Building call graph [2021-11-23 03:45:57,925 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-23 03:45:57,925 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-23 03:45:57,925 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-23 03:46:40,766 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 439 for LOIs [2021-11-23 03:46:41,047 INFO L197 IcfgInterpreter]: Interpreting procedure setClientPrivateKey with input of size 441 for LOIs [2021-11-23 03:46:41,332 INFO L197 IcfgInterpreter]: Interpreting procedure sendEmail with input of size 457 for LOIs [2021-11-23 03:46:58,298 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing with input of size 455 for LOIs [2021-11-23 03:47:04,839 INFO L197 IcfgInterpreter]: Interpreting procedure isReadable with input of size 240 for LOIs [2021-11-23 03:47:04,875 INFO L197 IcfgInterpreter]: Interpreting procedure getEmailTo with input of size 239 for LOIs [2021-11-23 03:47:04,917 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailFrom with input of size 447 for LOIs [2021-11-23 03:47:05,453 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailTo with input of size 445 for LOIs [2021-11-23 03:47:05,976 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-23 03:48:00,498 WARN L227 SmtUtils]: Spent 5.40s on a formula simplification. DAG size of input: 566 DAG size of output: 370 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 03:48:06,300 WARN L227 SmtUtils]: Spent 5.33s on a formula simplification. DAG size of input: 564 DAG size of output: 368 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 03:48:33,879 WARN L227 SmtUtils]: Spent 7.36s on a formula simplification. DAG size of input: 566 DAG size of output: 438 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 03:48:41,701 WARN L227 SmtUtils]: Spent 7.22s on a formula simplification. DAG size of input: 564 DAG size of output: 436 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 03:48:47,610 WARN L227 SmtUtils]: Spent 5.27s on a formula simplification. DAG size of input: 566 DAG size of output: 377 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 03:48:53,471 WARN L227 SmtUtils]: Spent 5.23s on a formula simplification. DAG size of input: 564 DAG size of output: 375 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 03:48:59,438 WARN L227 SmtUtils]: Spent 5.32s on a formula simplification. DAG size of input: 568 DAG size of output: 379 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 03:49:22,061 WARN L227 SmtUtils]: Spent 5.99s on a formula simplification. DAG size of input: 499 DAG size of output: 369 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 03:49:38,849 WARN L227 SmtUtils]: Spent 5.93s on a formula simplification. DAG size of input: 508 DAG size of output: 374 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate)