./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/email_spec1_productSimulator.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 839c364b Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06d76ecb-9246-4283-976f-47e171f88127/bin/utaipan-eEHZpOm5b7/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06d76ecb-9246-4283-976f-47e171f88127/bin/utaipan-eEHZpOm5b7/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06d76ecb-9246-4283-976f-47e171f88127/bin/utaipan-eEHZpOm5b7/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06d76ecb-9246-4283-976f-47e171f88127/bin/utaipan-eEHZpOm5b7/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/email_spec1_productSimulator.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06d76ecb-9246-4283-976f-47e171f88127/bin/utaipan-eEHZpOm5b7/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06d76ecb-9246-4283-976f-47e171f88127/bin/utaipan-eEHZpOm5b7 --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 c2ee13e5ae0bbed1c37b7eadefb29cbd7041f4c5e0d498dc3d4ea1e000526be8 --- Real Ultimate output --- This is Ultimate 0.2.2-hotfix-svcomp22-839c364 [2021-11-25 18:18:10,454 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-25 18:18:10,457 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-25 18:18:10,519 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-25 18:18:10,520 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-25 18:18:10,525 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-25 18:18:10,527 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-25 18:18:10,531 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-25 18:18:10,534 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-25 18:18:10,539 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-25 18:18:10,540 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-25 18:18:10,542 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-25 18:18:10,543 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-25 18:18:10,545 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-25 18:18:10,548 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-25 18:18:10,553 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-25 18:18:10,555 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-25 18:18:10,556 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-25 18:18:10,559 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-25 18:18:10,568 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-25 18:18:10,571 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-25 18:18:10,572 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-25 18:18:10,575 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-25 18:18:10,576 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-25 18:18:10,580 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-25 18:18:10,580 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-25 18:18:10,581 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-25 18:18:10,583 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-25 18:18:10,584 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-25 18:18:10,585 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-25 18:18:10,585 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-25 18:18:10,586 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-25 18:18:10,588 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-25 18:18:10,589 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-25 18:18:10,591 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-25 18:18:10,591 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-25 18:18:10,592 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-25 18:18:10,592 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-25 18:18:10,593 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-25 18:18:10,594 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-25 18:18:10,594 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-25 18:18:10,596 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06d76ecb-9246-4283-976f-47e171f88127/bin/utaipan-eEHZpOm5b7/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-25 18:18:10,643 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-25 18:18:10,644 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-25 18:18:10,645 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-25 18:18:10,645 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-25 18:18:10,652 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-25 18:18:10,652 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-25 18:18:10,653 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-25 18:18:10,653 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-25 18:18:10,653 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-25 18:18:10,653 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-25 18:18:10,654 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-25 18:18:10,655 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-25 18:18:10,655 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-25 18:18:10,655 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-25 18:18:10,655 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-25 18:18:10,656 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-25 18:18:10,656 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-25 18:18:10,656 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-25 18:18:10,657 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-25 18:18:10,657 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-25 18:18:10,657 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-25 18:18:10,657 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-25 18:18:10,658 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-25 18:18:10,658 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-25 18:18:10,658 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-25 18:18:10,658 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-25 18:18:10,660 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-25 18:18:10,660 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-25 18:18:10,660 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-25 18:18:10,661 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-25 18:18:10,661 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-25 18:18:10,661 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-25 18:18:10,662 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-25 18:18:10,662 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-25 18:18:10,662 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-25 18:18:10,662 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-25 18:18:10,663 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-25 18:18:10,663 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-25 18:18:10,663 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-25 18:18:10,663 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-25 18:18:10,663 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-25 18:18:10,664 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_06d76ecb-9246-4283-976f-47e171f88127/bin/utaipan-eEHZpOm5b7/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06d76ecb-9246-4283-976f-47e171f88127/bin/utaipan-eEHZpOm5b7 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c2ee13e5ae0bbed1c37b7eadefb29cbd7041f4c5e0d498dc3d4ea1e000526be8 [2021-11-25 18:18:11,032 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-25 18:18:11,066 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-25 18:18:11,069 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-25 18:18:11,070 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-25 18:18:11,071 INFO L275 PluginConnector]: CDTParser initialized [2021-11-25 18:18:11,072 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06d76ecb-9246-4283-976f-47e171f88127/bin/utaipan-eEHZpOm5b7/../../sv-benchmarks/c/product-lines/email_spec1_productSimulator.cil.c [2021-11-25 18:18:11,143 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06d76ecb-9246-4283-976f-47e171f88127/bin/utaipan-eEHZpOm5b7/data/d6d52c78c/6d994cb9985e4aa39f5e2ac9607fe68f/FLAGb1caa4738 [2021-11-25 18:18:11,877 INFO L306 CDTParser]: Found 1 translation units. [2021-11-25 18:18:11,878 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06d76ecb-9246-4283-976f-47e171f88127/sv-benchmarks/c/product-lines/email_spec1_productSimulator.cil.c [2021-11-25 18:18:11,903 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06d76ecb-9246-4283-976f-47e171f88127/bin/utaipan-eEHZpOm5b7/data/d6d52c78c/6d994cb9985e4aa39f5e2ac9607fe68f/FLAGb1caa4738 [2021-11-25 18:18:12,016 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06d76ecb-9246-4283-976f-47e171f88127/bin/utaipan-eEHZpOm5b7/data/d6d52c78c/6d994cb9985e4aa39f5e2ac9607fe68f [2021-11-25 18:18:12,019 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-25 18:18:12,020 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-25 18:18:12,027 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-25 18:18:12,028 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-25 18:18:12,031 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-25 18:18:12,032 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 06:18:12" (1/1) ... [2021-11-25 18:18:12,034 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5573d052 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:18:12, skipping insertion in model container [2021-11-25 18:18:12,034 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 06:18:12" (1/1) ... [2021-11-25 18:18:12,042 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-25 18:18:12,159 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-25 18:18:12,772 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_06d76ecb-9246-4283-976f-47e171f88127/sv-benchmarks/c/product-lines/email_spec1_productSimulator.cil.c[35789,35802] [2021-11-25 18:18:12,923 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-25 18:18:12,938 INFO L203 MainTranslator]: Completed pre-run [2021-11-25 18:18:13,011 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_06d76ecb-9246-4283-976f-47e171f88127/sv-benchmarks/c/product-lines/email_spec1_productSimulator.cil.c[35789,35802] [2021-11-25 18:18:13,048 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-25 18:18:13,089 INFO L208 MainTranslator]: Completed translation [2021-11-25 18:18:13,089 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:18:13 WrapperNode [2021-11-25 18:18:13,090 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-25 18:18:13,091 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-25 18:18:13,091 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-25 18:18:13,091 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-25 18:18:13,099 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:18:13" (1/1) ... [2021-11-25 18:18:13,145 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:18:13" (1/1) ... [2021-11-25 18:18:13,252 INFO L137 Inliner]: procedures = 151, calls = 283, calls flagged for inlining = 67, calls inlined = 64, statements flattened = 1312 [2021-11-25 18:18:13,253 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-25 18:18:13,254 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-25 18:18:13,255 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-25 18:18:13,255 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-25 18:18:13,264 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:18:13" (1/1) ... [2021-11-25 18:18:13,264 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:18:13" (1/1) ... [2021-11-25 18:18:13,275 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:18:13" (1/1) ... [2021-11-25 18:18:13,275 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:18:13" (1/1) ... [2021-11-25 18:18:13,332 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:18:13" (1/1) ... [2021-11-25 18:18:13,350 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:18:13" (1/1) ... [2021-11-25 18:18:13,370 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:18:13" (1/1) ... [2021-11-25 18:18:13,392 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-25 18:18:13,400 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-25 18:18:13,400 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-25 18:18:13,400 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-25 18:18:13,401 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:18:13" (1/1) ... [2021-11-25 18:18:13,409 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-25 18:18:13,427 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06d76ecb-9246-4283-976f-47e171f88127/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 18:18:13,453 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06d76ecb-9246-4283-976f-47e171f88127/bin/utaipan-eEHZpOm5b7/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-25 18:18:13,481 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06d76ecb-9246-4283-976f-47e171f88127/bin/utaipan-eEHZpOm5b7/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-25 18:18:13,506 INFO L130 BoogieDeclarations]: Found specification of procedure getClientPrivateKey [2021-11-25 18:18:13,507 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientPrivateKey [2021-11-25 18:18:13,507 INFO L130 BoogieDeclarations]: Found specification of procedure setup_chuck__before__Keys [2021-11-25 18:18:13,507 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_chuck__before__Keys [2021-11-25 18:18:13,507 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing__before__Sign [2021-11-25 18:18:13,507 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing__before__Sign [2021-11-25 18:18:13,507 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookSize [2021-11-25 18:18:13,507 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookSize [2021-11-25 18:18:13,507 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailEncryptionKey [2021-11-25 18:18:13,508 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailEncryptionKey [2021-11-25 18:18:13,508 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookAddress [2021-11-25 18:18:13,508 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookAddress [2021-11-25 18:18:13,508 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailEncryptionKey [2021-11-25 18:18:13,508 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailEncryptionKey [2021-11-25 18:18:13,508 INFO L130 BoogieDeclarations]: Found specification of procedure printMail__before__Verify [2021-11-25 18:18:13,508 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail__before__Verify [2021-11-25 18:18:13,508 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2021-11-25 18:18:13,509 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2021-11-25 18:18:13,509 INFO L130 BoogieDeclarations]: Found specification of procedure setup_bob__before__Keys [2021-11-25 18:18:13,509 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_bob__before__Keys [2021-11-25 18:18:13,509 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2021-11-25 18:18:13,509 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2021-11-25 18:18:13,509 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable [2021-11-25 18:18:13,509 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable [2021-11-25 18:18:13,509 INFO L130 BoogieDeclarations]: Found specification of procedure createClientKeyringEntry [2021-11-25 18:18:13,510 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientKeyringEntry [2021-11-25 18:18:13,510 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__before__Decrypt [2021-11-25 18:18:13,510 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__before__Decrypt [2021-11-25 18:18:13,510 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing__before__Encrypt [2021-11-25 18:18:13,511 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing__before__Encrypt [2021-11-25 18:18:13,511 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsEncrypted [2021-11-25 18:18:13,511 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsEncrypted [2021-11-25 18:18:13,511 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSignKey [2021-11-25 18:18:13,511 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSignKey [2021-11-25 18:18:13,511 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAdd [2021-11-25 18:18:13,512 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAdd [2021-11-25 18:18:13,512 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2021-11-25 18:18:13,512 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__before__Forward [2021-11-25 18:18:13,512 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__before__Forward [2021-11-25 18:18:13,512 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailFrom [2021-11-25 18:18:13,512 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailFrom [2021-11-25 18:18:13,512 INFO L130 BoogieDeclarations]: Found specification of procedure queue [2021-11-25 18:18:13,513 INFO L138 BoogieDeclarations]: Found implementation of procedure queue [2021-11-25 18:18:13,513 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2021-11-25 18:18:13,513 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2021-11-25 18:18:13,513 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable__before__Encrypt [2021-11-25 18:18:13,514 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable__before__Encrypt [2021-11-25 18:18:13,515 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-25 18:18:13,515 INFO L130 BoogieDeclarations]: Found specification of procedure isSigned [2021-11-25 18:18:13,516 INFO L138 BoogieDeclarations]: Found implementation of procedure isSigned [2021-11-25 18:18:13,516 INFO L130 BoogieDeclarations]: Found specification of procedure isKeyPairValid [2021-11-25 18:18:13,516 INFO L138 BoogieDeclarations]: Found implementation of procedure isKeyPairValid [2021-11-25 18:18:13,516 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing__before__AddressBook [2021-11-25 18:18:13,516 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing__before__AddressBook [2021-11-25 18:18:13,516 INFO L130 BoogieDeclarations]: Found specification of procedure printMail__before__Encrypt [2021-11-25 18:18:13,517 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail__before__Encrypt [2021-11-25 18:18:13,517 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__before__AutoResponder [2021-11-25 18:18:13,517 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__before__AutoResponder [2021-11-25 18:18:13,517 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookSize [2021-11-25 18:18:13,517 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookSize [2021-11-25 18:18:13,517 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringUser [2021-11-25 18:18:13,517 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringUser [2021-11-25 18:18:13,518 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringPublicKey [2021-11-25 18:18:13,518 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringPublicKey [2021-11-25 18:18:13,518 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2021-11-25 18:18:13,518 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2021-11-25 18:18:13,518 INFO L130 BoogieDeclarations]: Found specification of procedure findPublicKey [2021-11-25 18:18:13,518 INFO L138 BoogieDeclarations]: Found implementation of procedure findPublicKey [2021-11-25 18:18:13,518 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2021-11-25 18:18:13,518 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2021-11-25 18:18:13,518 INFO L130 BoogieDeclarations]: Found specification of procedure isEncrypted [2021-11-25 18:18:13,519 INFO L138 BoogieDeclarations]: Found implementation of procedure isEncrypted [2021-11-25 18:18:13,519 INFO L130 BoogieDeclarations]: Found specification of procedure setup_rjh__before__Keys [2021-11-25 18:18:13,520 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_rjh__before__Keys [2021-11-25 18:18:13,520 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__before__Verify [2021-11-25 18:18:13,520 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__before__Verify [2021-11-25 18:18:13,520 INFO L130 BoogieDeclarations]: Found specification of procedure setClientPrivateKey [2021-11-25 18:18:13,520 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientPrivateKey [2021-11-25 18:18:13,520 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailTo [2021-11-25 18:18:13,520 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailTo [2021-11-25 18:18:13,520 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-25 18:18:13,521 INFO L130 BoogieDeclarations]: Found specification of procedure generateKeyPair [2021-11-25 18:18:13,521 INFO L138 BoogieDeclarations]: Found implementation of procedure generateKeyPair [2021-11-25 18:18:13,521 INFO L130 BoogieDeclarations]: Found specification of procedure printMail__before__Sign [2021-11-25 18:18:13,522 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail__before__Sign [2021-11-25 18:18:13,522 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2021-11-25 18:18:13,522 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2021-11-25 18:18:13,522 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookAddress [2021-11-25 18:18:13,523 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookAddress [2021-11-25 18:18:13,523 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-25 18:18:13,523 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-25 18:18:13,765 INFO L236 CfgBuilder]: Building ICFG [2021-11-25 18:18:13,781 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-25 18:18:14,909 INFO L277 CfgBuilder]: Performing block encoding [2021-11-25 18:18:15,553 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-25 18:18:15,554 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-11-25 18:18:15,559 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 06:18:15 BoogieIcfgContainer [2021-11-25 18:18:15,559 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-25 18:18:15,561 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-25 18:18:15,561 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-25 18:18:15,565 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-25 18:18:15,566 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 06:18:12" (1/3) ... [2021-11-25 18:18:15,566 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4bfbcd10 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 06:18:15, skipping insertion in model container [2021-11-25 18:18:15,566 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:18:13" (2/3) ... [2021-11-25 18:18:15,567 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4bfbcd10 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 06:18:15, skipping insertion in model container [2021-11-25 18:18:15,567 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 06:18:15" (3/3) ... [2021-11-25 18:18:15,568 INFO L111 eAbstractionObserver]: Analyzing ICFG email_spec1_productSimulator.cil.c [2021-11-25 18:18:15,574 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-25 18:18:15,575 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-25 18:18:15,643 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-25 18:18:15,650 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 [2021-11-25 18:18:15,651 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-25 18:18:15,683 INFO L276 IsEmpty]: Start isEmpty. Operand has 380 states, 225 states have (on average 1.3333333333333333) internal successors, (300), 245 states have internal predecessors, (300), 110 states have call successors, (110), 43 states have call predecessors, (110), 43 states have return successors, (110), 109 states have call predecessors, (110), 110 states have call successors, (110) [2021-11-25 18:18:15,705 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2021-11-25 18:18:15,706 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:18:15,706 INFO L514 BasicCegarLoop]: trace histogram [8, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:18:15,707 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 18:18:15,712 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:18:15,713 INFO L85 PathProgramCache]: Analyzing trace with hash -743639747, now seen corresponding path program 1 times [2021-11-25 18:18:15,722 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:18:15,722 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1793759055] [2021-11-25 18:18:15,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:18:15,724 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:18:15,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:18:16,167 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2021-11-25 18:18:16,167 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:18:16,168 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1793759055] [2021-11-25 18:18:16,168 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1793759055] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:18:16,168 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:18:16,169 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-25 18:18:16,170 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [905482259] [2021-11-25 18:18:16,171 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:18:16,175 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-25 18:18:16,176 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:18:16,226 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-25 18:18:16,227 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-25 18:18:16,232 INFO L87 Difference]: Start difference. First operand has 380 states, 225 states have (on average 1.3333333333333333) internal successors, (300), 245 states have internal predecessors, (300), 110 states have call successors, (110), 43 states have call predecessors, (110), 43 states have return successors, (110), 109 states have call predecessors, (110), 110 states have call successors, (110) Second operand has 2 states, 2 states have (on average 23.0) internal successors, (46), 2 states have internal predecessors, (46), 2 states have call successors, (23), 2 states have call predecessors, (23), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2021-11-25 18:18:16,472 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:18:16,473 INFO L93 Difference]: Finished difference Result 602 states and 816 transitions. [2021-11-25 18:18:16,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-25 18:18:16,475 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 23.0) internal successors, (46), 2 states have internal predecessors, (46), 2 states have call successors, (23), 2 states have call predecessors, (23), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 97 [2021-11-25 18:18:16,480 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:18:16,498 INFO L225 Difference]: With dead ends: 602 [2021-11-25 18:18:16,499 INFO L226 Difference]: Without dead ends: 377 [2021-11-25 18:18:16,509 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 [2021-11-25 18:18:16,517 INFO L933 BasicCegarLoop]: 465 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 53 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 465 SdHoareTripleChecker+Invalid, 53 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 53 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-25 18:18:16,518 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 465 Invalid, 53 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 53 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-25 18:18:16,532 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 377 states. [2021-11-25 18:18:16,597 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 377 to 377. [2021-11-25 18:18:16,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 377 states, 223 states have (on average 1.3183856502242153) internal successors, (294), 242 states have internal predecessors, (294), 110 states have call successors, (110), 43 states have call predecessors, (110), 43 states have return successors, (109), 108 states have call predecessors, (109), 109 states have call successors, (109) [2021-11-25 18:18:16,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 377 states to 377 states and 513 transitions. [2021-11-25 18:18:16,607 INFO L78 Accepts]: Start accepts. Automaton has 377 states and 513 transitions. Word has length 97 [2021-11-25 18:18:16,609 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:18:16,609 INFO L470 AbstractCegarLoop]: Abstraction has 377 states and 513 transitions. [2021-11-25 18:18:16,609 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 23.0) internal successors, (46), 2 states have internal predecessors, (46), 2 states have call successors, (23), 2 states have call predecessors, (23), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2021-11-25 18:18:16,610 INFO L276 IsEmpty]: Start isEmpty. Operand 377 states and 513 transitions. [2021-11-25 18:18:16,616 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2021-11-25 18:18:16,616 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:18:16,616 INFO L514 BasicCegarLoop]: trace histogram [8, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:18:16,616 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-25 18:18:16,617 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 18:18:16,617 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:18:16,618 INFO L85 PathProgramCache]: Analyzing trace with hash -916928243, now seen corresponding path program 1 times [2021-11-25 18:18:16,618 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:18:16,618 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1710040836] [2021-11-25 18:18:16,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:18:16,619 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:18:16,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:18:16,840 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2021-11-25 18:18:16,841 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:18:16,841 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1710040836] [2021-11-25 18:18:16,842 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1710040836] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:18:16,842 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:18:16,842 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 18:18:16,842 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1581371993] [2021-11-25 18:18:16,843 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:18:16,846 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 18:18:16,846 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:18:16,847 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 18:18:16,847 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 18:18:16,848 INFO L87 Difference]: Start difference. First operand 377 states and 513 transitions. Second operand has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 2 states have call successors, (23), 2 states have call predecessors, (23), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2021-11-25 18:18:17,083 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:18:17,085 INFO L93 Difference]: Finished difference Result 598 states and 796 transitions. [2021-11-25 18:18:17,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 18:18:17,086 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 2 states have call successors, (23), 2 states have call predecessors, (23), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 98 [2021-11-25 18:18:17,089 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:18:17,101 INFO L225 Difference]: With dead ends: 598 [2021-11-25 18:18:17,101 INFO L226 Difference]: Without dead ends: 379 [2021-11-25 18:18:17,107 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 [2021-11-25 18:18:17,110 INFO L933 BasicCegarLoop]: 462 mSDtfsCounter, 0 mSDsluCounter, 510 mSDsCounter, 0 mSdLazyCounter, 102 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 923 SdHoareTripleChecker+Invalid, 102 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 102 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-25 18:18:17,111 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 923 Invalid, 102 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 102 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-25 18:18:17,115 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 379 states. [2021-11-25 18:18:17,174 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 379 to 379. [2021-11-25 18:18:17,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 379 states, 225 states have (on average 1.3155555555555556) internal successors, (296), 244 states have internal predecessors, (296), 110 states have call successors, (110), 43 states have call predecessors, (110), 43 states have return successors, (109), 108 states have call predecessors, (109), 109 states have call successors, (109) [2021-11-25 18:18:17,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 379 states to 379 states and 515 transitions. [2021-11-25 18:18:17,182 INFO L78 Accepts]: Start accepts. Automaton has 379 states and 515 transitions. Word has length 98 [2021-11-25 18:18:17,185 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:18:17,186 INFO L470 AbstractCegarLoop]: Abstraction has 379 states and 515 transitions. [2021-11-25 18:18:17,186 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 2 states have call successors, (23), 2 states have call predecessors, (23), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2021-11-25 18:18:17,187 INFO L276 IsEmpty]: Start isEmpty. Operand 379 states and 515 transitions. [2021-11-25 18:18:17,194 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2021-11-25 18:18:17,194 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:18:17,195 INFO L514 BasicCegarLoop]: trace histogram [8, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:18:17,195 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-25 18:18:17,196 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 18:18:17,197 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:18:17,197 INFO L85 PathProgramCache]: Analyzing trace with hash -1444660306, now seen corresponding path program 1 times [2021-11-25 18:18:17,197 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:18:17,198 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [6684708] [2021-11-25 18:18:17,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:18:17,199 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:18:17,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:18:17,387 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2021-11-25 18:18:17,387 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:18:17,388 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [6684708] [2021-11-25 18:18:17,388 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [6684708] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:18:17,389 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:18:17,389 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 18:18:17,389 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [777574996] [2021-11-25 18:18:17,390 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:18:17,391 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 18:18:17,392 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:18:17,392 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 18:18:17,393 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 18:18:17,393 INFO L87 Difference]: Start difference. First operand 379 states and 515 transitions. Second operand has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 2 states have call successors, (23), 2 states have call predecessors, (23), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2021-11-25 18:18:17,573 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:18:17,573 INFO L93 Difference]: Finished difference Result 757 states and 1044 transitions. [2021-11-25 18:18:17,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 18:18:17,574 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 2 states have call successors, (23), 2 states have call predecessors, (23), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 103 [2021-11-25 18:18:17,574 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:18:17,580 INFO L225 Difference]: With dead ends: 757 [2021-11-25 18:18:17,581 INFO L226 Difference]: Without dead ends: 446 [2021-11-25 18:18:17,582 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 [2021-11-25 18:18:17,590 INFO L933 BasicCegarLoop]: 481 mSDtfsCounter, 84 mSDsluCounter, 501 mSDsCounter, 0 mSdLazyCounter, 103 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 102 SdHoareTripleChecker+Valid, 933 SdHoareTripleChecker+Invalid, 104 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 103 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-25 18:18:17,591 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [102 Valid, 933 Invalid, 104 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 103 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-25 18:18:17,594 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 446 states. [2021-11-25 18:18:17,627 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 446 to 441. [2021-11-25 18:18:17,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 441 states, 273 states have (on average 1.3663003663003663) internal successors, (373), 294 states have internal predecessors, (373), 124 states have call successors, (124), 43 states have call predecessors, (124), 43 states have return successors, (123), 122 states have call predecessors, (123), 123 states have call successors, (123) [2021-11-25 18:18:17,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 441 states to 441 states and 620 transitions. [2021-11-25 18:18:17,637 INFO L78 Accepts]: Start accepts. Automaton has 441 states and 620 transitions. Word has length 103 [2021-11-25 18:18:17,638 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:18:17,638 INFO L470 AbstractCegarLoop]: Abstraction has 441 states and 620 transitions. [2021-11-25 18:18:17,638 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 2 states have call successors, (23), 2 states have call predecessors, (23), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2021-11-25 18:18:17,639 INFO L276 IsEmpty]: Start isEmpty. Operand 441 states and 620 transitions. [2021-11-25 18:18:17,643 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2021-11-25 18:18:17,643 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:18:17,648 INFO L514 BasicCegarLoop]: trace histogram [8, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:18:17,648 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-25 18:18:17,649 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 18:18:17,649 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:18:17,650 INFO L85 PathProgramCache]: Analyzing trace with hash -1092221239, now seen corresponding path program 1 times [2021-11-25 18:18:17,650 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:18:17,650 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [486949966] [2021-11-25 18:18:17,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:18:17,650 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:18:17,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:18:17,818 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2021-11-25 18:18:17,818 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:18:17,818 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [486949966] [2021-11-25 18:18:17,819 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [486949966] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 18:18:17,819 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1664299082] [2021-11-25 18:18:17,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:18:17,819 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 18:18:17,820 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06d76ecb-9246-4283-976f-47e171f88127/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 18:18:17,824 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06d76ecb-9246-4283-976f-47e171f88127/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 18:18:17,832 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06d76ecb-9246-4283-976f-47e171f88127/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-25 18:18:18,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:18:18,169 INFO L263 TraceCheckSpWp]: Trace formula consists of 1258 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-25 18:18:18,182 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 18:18:18,556 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2021-11-25 18:18:18,556 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-25 18:18:18,556 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1664299082] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:18:18,557 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-25 18:18:18,557 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2021-11-25 18:18:18,557 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [186916921] [2021-11-25 18:18:18,557 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:18:18,558 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 18:18:18,558 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:18:18,571 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 18:18:18,572 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-25 18:18:18,572 INFO L87 Difference]: Start difference. First operand 441 states and 620 transitions. Second operand has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 3 states have call successors, (23), 3 states have call predecessors, (23), 3 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) [2021-11-25 18:18:18,720 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:18:18,720 INFO L93 Difference]: Finished difference Result 859 states and 1224 transitions. [2021-11-25 18:18:18,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 18:18:18,732 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 3 states have call successors, (23), 3 states have call predecessors, (23), 3 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) Word has length 104 [2021-11-25 18:18:18,735 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:18:18,740 INFO L225 Difference]: With dead ends: 859 [2021-11-25 18:18:18,740 INFO L226 Difference]: Without dead ends: 439 [2021-11-25 18:18:18,742 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 104 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-25 18:18:18,748 INFO L933 BasicCegarLoop]: 443 mSDtfsCounter, 420 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 60 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 420 SdHoareTripleChecker+Valid, 448 SdHoareTripleChecker+Invalid, 65 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 60 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-25 18:18:18,750 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [420 Valid, 448 Invalid, 65 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 60 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-25 18:18:18,752 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 439 states. [2021-11-25 18:18:18,788 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 439 to 439. [2021-11-25 18:18:18,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 439 states, 273 states have (on average 1.3443223443223444) internal successors, (367), 292 states have internal predecessors, (367), 121 states have call successors, (121), 44 states have call predecessors, (121), 44 states have return successors, (120), 119 states have call predecessors, (120), 120 states have call successors, (120) [2021-11-25 18:18:18,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 439 states to 439 states and 608 transitions. [2021-11-25 18:18:18,795 INFO L78 Accepts]: Start accepts. Automaton has 439 states and 608 transitions. Word has length 104 [2021-11-25 18:18:18,796 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:18:18,796 INFO L470 AbstractCegarLoop]: Abstraction has 439 states and 608 transitions. [2021-11-25 18:18:18,797 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 3 states have call successors, (23), 3 states have call predecessors, (23), 3 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) [2021-11-25 18:18:18,797 INFO L276 IsEmpty]: Start isEmpty. Operand 439 states and 608 transitions. [2021-11-25 18:18:18,800 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2021-11-25 18:18:18,801 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:18:18,801 INFO L514 BasicCegarLoop]: trace histogram [8, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:18:18,844 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06d76ecb-9246-4283-976f-47e171f88127/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-25 18:18:19,027 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06d76ecb-9246-4283-976f-47e171f88127/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 18:18:19,028 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 18:18:19,028 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:18:19,028 INFO L85 PathProgramCache]: Analyzing trace with hash -1680970286, now seen corresponding path program 1 times [2021-11-25 18:18:19,028 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:18:19,028 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [684846282] [2021-11-25 18:18:19,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:18:19,029 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:18:19,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:18:19,134 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2021-11-25 18:18:19,135 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:18:19,135 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [684846282] [2021-11-25 18:18:19,135 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [684846282] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 18:18:19,135 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1761239891] [2021-11-25 18:18:19,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:18:19,136 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 18:18:19,136 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06d76ecb-9246-4283-976f-47e171f88127/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 18:18:19,140 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06d76ecb-9246-4283-976f-47e171f88127/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 18:18:19,160 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06d76ecb-9246-4283-976f-47e171f88127/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-25 18:18:19,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:18:19,472 INFO L263 TraceCheckSpWp]: Trace formula consists of 1301 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-25 18:18:19,479 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 18:18:19,685 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2021-11-25 18:18:19,685 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 18:18:19,895 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2021-11-25 18:18:19,896 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1761239891] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 18:18:19,896 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1396736173] [2021-11-25 18:18:19,918 INFO L159 IcfgInterpreter]: Started Sifa with 92 locations of interest [2021-11-25 18:18:19,918 INFO L166 IcfgInterpreter]: Building call graph [2021-11-25 18:18:19,923 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-25 18:18:19,928 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-25 18:18:19,929 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-25 18:18:33,413 INFO L197 IcfgInterpreter]: Interpreting procedure select_one with input of size 463 for LOIs [2021-11-25 18:18:33,711 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-25 18:18:41,033 WARN L227 SmtUtils]: Spent 5.62s on a formula simplification. DAG size of input: 463 DAG size of output: 354 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-25 18:18:46,741 WARN L227 SmtUtils]: Spent 5.61s on a formula simplification. DAG size of input: 471 DAG size of output: 362 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-25 18:19:19,350 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSifa [1396736173] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:19:19,351 INFO L186 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2021-11-25 18:19:19,351 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [4, 4, 4] total 28 [2021-11-25 18:19:19,352 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [820671236] [2021-11-25 18:19:19,352 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:19:19,353 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2021-11-25 18:19:19,353 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:19:19,354 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-11-25 18:19:19,355 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=139, Invalid=617, Unknown=0, NotChecked=0, Total=756 [2021-11-25 18:19:19,355 INFO L87 Difference]: Start difference. First operand 439 states and 608 transitions. Second operand has 23 states, 14 states have (on average 4.071428571428571) internal successors, (57), 13 states have internal predecessors, (57), 9 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (20), 9 states have call predecessors, (20), 9 states have call successors, (20) [2021-11-25 18:19:27,074 WARN L227 SmtUtils]: Spent 7.44s on a formula simplification. DAG size of input: 709 DAG size of output: 517 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-25 18:19:34,697 WARN L227 SmtUtils]: Spent 7.31s on a formula simplification. DAG size of input: 708 DAG size of output: 519 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-25 18:19:42,423 WARN L227 SmtUtils]: Spent 7.42s on a formula simplification. DAG size of input: 706 DAG size of output: 521 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-25 18:19:50,367 WARN L227 SmtUtils]: Spent 7.57s on a formula simplification. DAG size of input: 706 DAG size of output: 523 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-25 18:19:57,825 WARN L227 SmtUtils]: Spent 7.10s on a formula simplification. DAG size of input: 706 DAG size of output: 525 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-25 18:20:05,316 WARN L227 SmtUtils]: Spent 7.20s on a formula simplification. DAG size of input: 706 DAG size of output: 527 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-25 18:20:12,920 WARN L227 SmtUtils]: Spent 7.29s on a formula simplification. DAG size of input: 706 DAG size of output: 529 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-25 18:20:20,282 WARN L227 SmtUtils]: Spent 7.06s on a formula simplification. DAG size of input: 706 DAG size of output: 531 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-25 18:20:31,429 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:20:31,429 INFO L93 Difference]: Finished difference Result 874 states and 1200 transitions. [2021-11-25 18:20:31,430 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-11-25 18:20:31,431 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 14 states have (on average 4.071428571428571) internal successors, (57), 13 states have internal predecessors, (57), 9 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (20), 9 states have call predecessors, (20), 9 states have call successors, (20) Word has length 113 [2021-11-25 18:20:31,431 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:20:31,435 INFO L225 Difference]: With dead ends: 874 [2021-11-25 18:20:31,435 INFO L226 Difference]: Without dead ends: 467 [2021-11-25 18:20:31,437 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 351 GetRequests, 315 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 428 ImplicationChecksByTransitivity, 112.1s TimeCoverageRelationStatistics Valid=233, Invalid=1173, Unknown=0, NotChecked=0, Total=1406 [2021-11-25 18:20:31,438 INFO L933 BasicCegarLoop]: 422 mSDtfsCounter, 104 mSDsluCounter, 1851 mSDsCounter, 0 mSdLazyCounter, 1118 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 112 SdHoareTripleChecker+Valid, 2192 SdHoareTripleChecker+Invalid, 1165 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 1118 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.4s IncrementalHoareTripleChecker+Time [2021-11-25 18:20:31,439 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [112 Valid, 2192 Invalid, 1165 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [47 Valid, 1118 Invalid, 0 Unknown, 0 Unchecked, 5.4s Time] [2021-11-25 18:20:31,440 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 467 states. [2021-11-25 18:20:31,518 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 467 to 459. [2021-11-25 18:20:31,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 459 states, 287 states have (on average 1.3344947735191637) internal successors, (383), 306 states have internal predecessors, (383), 121 states have call successors, (121), 50 states have call predecessors, (121), 50 states have return successors, (120), 119 states have call predecessors, (120), 120 states have call successors, (120) [2021-11-25 18:20:31,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 459 states to 459 states and 624 transitions. [2021-11-25 18:20:31,523 INFO L78 Accepts]: Start accepts. Automaton has 459 states and 624 transitions. Word has length 113 [2021-11-25 18:20:31,526 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:20:31,526 INFO L470 AbstractCegarLoop]: Abstraction has 459 states and 624 transitions. [2021-11-25 18:20:31,526 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 14 states have (on average 4.071428571428571) internal successors, (57), 13 states have internal predecessors, (57), 9 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (20), 9 states have call predecessors, (20), 9 states have call successors, (20) [2021-11-25 18:20:31,527 INFO L276 IsEmpty]: Start isEmpty. Operand 459 states and 624 transitions. [2021-11-25 18:20:31,529 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2021-11-25 18:20:31,529 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:20:31,530 INFO L514 BasicCegarLoop]: trace histogram [8, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:20:31,558 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06d76ecb-9246-4283-976f-47e171f88127/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-25 18:20:31,747 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06d76ecb-9246-4283-976f-47e171f88127/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 18:20:31,751 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 18:20:31,752 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:20:31,752 INFO L85 PathProgramCache]: Analyzing trace with hash 435700896, now seen corresponding path program 1 times [2021-11-25 18:20:31,752 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:20:31,752 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1850103257] [2021-11-25 18:20:31,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:20:31,753 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:20:31,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:20:31,854 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2021-11-25 18:20:31,854 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:20:31,855 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1850103257] [2021-11-25 18:20:31,855 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1850103257] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 18:20:31,855 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2087331702] [2021-11-25 18:20:31,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:20:31,855 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 18:20:31,856 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06d76ecb-9246-4283-976f-47e171f88127/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 18:20:31,868 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06d76ecb-9246-4283-976f-47e171f88127/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 18:20:31,876 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06d76ecb-9246-4283-976f-47e171f88127/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-25 18:20:32,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:20:32,195 INFO L263 TraceCheckSpWp]: Trace formula consists of 1305 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-25 18:20:32,200 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 18:20:32,409 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2021-11-25 18:20:32,409 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 18:20:32,687 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2021-11-25 18:20:32,687 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2087331702] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 18:20:32,688 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1309778955] [2021-11-25 18:20:32,693 INFO L159 IcfgInterpreter]: Started Sifa with 96 locations of interest [2021-11-25 18:20:32,693 INFO L166 IcfgInterpreter]: Building call graph [2021-11-25 18:20:32,694 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-25 18:20:32,694 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-25 18:20:32,694 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-25 18:20:44,248 INFO L197 IcfgInterpreter]: Interpreting procedure select_one with input of size 463 for LOIs [2021-11-25 18:20:44,516 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-25 18:20:51,522 WARN L227 SmtUtils]: Spent 5.41s on a formula simplification. DAG size of input: 463 DAG size of output: 354 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-25 18:20:57,209 WARN L227 SmtUtils]: Spent 5.58s on a formula simplification. DAG size of input: 471 DAG size of output: 362 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-25 18:21:29,122 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSifa [1309778955] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:21:29,122 INFO L186 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2021-11-25 18:21:29,122 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [23] imperfect sequences [4, 4, 4] total 29 [2021-11-25 18:21:29,123 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1824347790] [2021-11-25 18:21:29,123 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:21:29,123 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2021-11-25 18:21:29,124 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:21:29,124 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-11-25 18:21:29,125 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=140, Invalid=672, Unknown=0, NotChecked=0, Total=812 [2021-11-25 18:21:29,125 INFO L87 Difference]: Start difference. First operand 459 states and 624 transitions. Second operand has 24 states, 15 states have (on average 4.066666666666666) internal successors, (61), 14 states have internal predecessors, (61), 9 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (20), 9 states have call predecessors, (20), 9 states have call successors, (20) [2021-11-25 18:21:36,227 WARN L227 SmtUtils]: Spent 6.86s on a formula simplification. DAG size of input: 709 DAG size of output: 517 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-25 18:21:43,284 WARN L227 SmtUtils]: Spent 6.82s on a formula simplification. DAG size of input: 708 DAG size of output: 519 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-25 18:21:50,352 WARN L227 SmtUtils]: Spent 6.82s on a formula simplification. DAG size of input: 706 DAG size of output: 521 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-25 18:21:57,383 WARN L227 SmtUtils]: Spent 6.80s on a formula simplification. DAG size of input: 706 DAG size of output: 523 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-25 18:22:04,457 WARN L227 SmtUtils]: Spent 6.82s on a formula simplification. DAG size of input: 706 DAG size of output: 525 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-25 18:22:11,485 WARN L227 SmtUtils]: Spent 6.78s on a formula simplification. DAG size of input: 706 DAG size of output: 527 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-25 18:22:18,448 WARN L227 SmtUtils]: Spent 6.73s on a formula simplification. DAG size of input: 706 DAG size of output: 529 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-25 18:22:25,397 WARN L227 SmtUtils]: Spent 6.70s on a formula simplification. DAG size of input: 706 DAG size of output: 531 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-25 18:22:28,754 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:22:28,754 INFO L93 Difference]: Finished difference Result 867 states and 1186 transitions. [2021-11-25 18:22:28,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-11-25 18:22:28,755 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 15 states have (on average 4.066666666666666) internal successors, (61), 14 states have internal predecessors, (61), 9 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (20), 9 states have call predecessors, (20), 9 states have call successors, (20) Word has length 117 [2021-11-25 18:22:28,756 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:22:28,759 INFO L225 Difference]: With dead ends: 867 [2021-11-25 18:22:28,759 INFO L226 Difference]: Without dead ends: 451 [2021-11-25 18:22:28,761 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 361 GetRequests, 326 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 450 ImplicationChecksByTransitivity, 99.9s TimeCoverageRelationStatistics Valid=218, Invalid=1114, Unknown=0, NotChecked=0, Total=1332 [2021-11-25 18:22:28,762 INFO L933 BasicCegarLoop]: 421 mSDtfsCounter, 65 mSDsluCounter, 2577 mSDsCounter, 0 mSdLazyCounter, 1151 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 73 SdHoareTripleChecker+Valid, 2899 SdHoareTripleChecker+Invalid, 1186 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 1151 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.2s IncrementalHoareTripleChecker+Time [2021-11-25 18:22:28,762 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [73 Valid, 2899 Invalid, 1186 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 1151 Invalid, 0 Unknown, 0 Unchecked, 4.2s Time] [2021-11-25 18:22:28,764 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 451 states. [2021-11-25 18:22:28,814 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 451 to 451. [2021-11-25 18:22:28,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 451 states, 279 states have (on average 1.3225806451612903) internal successors, (369), 298 states have internal predecessors, (369), 121 states have call successors, (121), 50 states have call predecessors, (121), 50 states have return successors, (120), 119 states have call predecessors, (120), 120 states have call successors, (120) [2021-11-25 18:22:28,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 451 states to 451 states and 610 transitions. [2021-11-25 18:22:28,819 INFO L78 Accepts]: Start accepts. Automaton has 451 states and 610 transitions. Word has length 117 [2021-11-25 18:22:28,819 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:22:28,819 INFO L470 AbstractCegarLoop]: Abstraction has 451 states and 610 transitions. [2021-11-25 18:22:28,820 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 15 states have (on average 4.066666666666666) internal successors, (61), 14 states have internal predecessors, (61), 9 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (20), 9 states have call predecessors, (20), 9 states have call successors, (20) [2021-11-25 18:22:28,820 INFO L276 IsEmpty]: Start isEmpty. Operand 451 states and 610 transitions. [2021-11-25 18:22:28,823 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2021-11-25 18:22:28,823 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:22:28,823 INFO L514 BasicCegarLoop]: trace histogram [8, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:22:28,861 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06d76ecb-9246-4283-976f-47e171f88127/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-11-25 18:22:29,047 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06d76ecb-9246-4283-976f-47e171f88127/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 18:22:29,048 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 18:22:29,048 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:22:29,048 INFO L85 PathProgramCache]: Analyzing trace with hash -1711579497, now seen corresponding path program 1 times [2021-11-25 18:22:29,048 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:22:29,048 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2077754185] [2021-11-25 18:22:29,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:22:29,049 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:22:29,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:22:29,132 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2021-11-25 18:22:29,133 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:22:29,133 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2077754185] [2021-11-25 18:22:29,133 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2077754185] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:22:29,133 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:22:29,134 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 18:22:29,134 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1925108199] [2021-11-25 18:22:29,134 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:22:29,134 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 18:22:29,135 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:22:29,135 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 18:22:29,135 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 18:22:29,136 INFO L87 Difference]: Start difference. First operand 451 states and 610 transitions. Second operand has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 2 states have call successors, (25), 2 states have call predecessors, (25), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2021-11-25 18:22:29,283 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:22:29,283 INFO L93 Difference]: Finished difference Result 847 states and 1154 transitions. [2021-11-25 18:22:29,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 18:22:29,284 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 2 states have call successors, (25), 2 states have call predecessors, (25), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) Word has length 119 [2021-11-25 18:22:29,284 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:22:29,288 INFO L225 Difference]: With dead ends: 847 [2021-11-25 18:22:29,288 INFO L226 Difference]: Without dead ends: 448 [2021-11-25 18:22:29,290 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 [2021-11-25 18:22:29,290 INFO L933 BasicCegarLoop]: 416 mSDtfsCounter, 443 mSDsluCounter, 29 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 443 SdHoareTripleChecker+Valid, 443 SdHoareTripleChecker+Invalid, 77 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 67 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-25 18:22:29,291 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [443 Valid, 443 Invalid, 77 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 67 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-25 18:22:29,292 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 448 states. [2021-11-25 18:22:29,342 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 448 to 448. [2021-11-25 18:22:29,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 448 states, 279 states have (on average 1.2580645161290323) internal successors, (351), 291 states have internal predecessors, (351), 118 states have call successors, (118), 50 states have call predecessors, (118), 50 states have return successors, (117), 116 states have call predecessors, (117), 117 states have call successors, (117) [2021-11-25 18:22:29,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 448 states to 448 states and 586 transitions. [2021-11-25 18:22:29,347 INFO L78 Accepts]: Start accepts. Automaton has 448 states and 586 transitions. Word has length 119 [2021-11-25 18:22:29,347 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:22:29,348 INFO L470 AbstractCegarLoop]: Abstraction has 448 states and 586 transitions. [2021-11-25 18:22:29,348 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 2 states have call successors, (25), 2 states have call predecessors, (25), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2021-11-25 18:22:29,348 INFO L276 IsEmpty]: Start isEmpty. Operand 448 states and 586 transitions. [2021-11-25 18:22:29,350 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2021-11-25 18:22:29,350 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:22:29,351 INFO L514 BasicCegarLoop]: trace histogram [8, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:22:29,351 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-25 18:22:29,351 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 18:22:29,351 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:22:29,352 INFO L85 PathProgramCache]: Analyzing trace with hash -979485820, now seen corresponding path program 1 times [2021-11-25 18:22:29,352 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:22:29,352 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1993923480] [2021-11-25 18:22:29,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:22:29,352 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:22:29,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:22:29,425 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2021-11-25 18:22:29,425 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:22:29,425 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1993923480] [2021-11-25 18:22:29,426 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1993923480] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 18:22:29,426 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [99834897] [2021-11-25 18:22:29,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:22:29,426 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 18:22:29,426 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06d76ecb-9246-4283-976f-47e171f88127/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 18:22:29,431 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06d76ecb-9246-4283-976f-47e171f88127/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 18:22:29,453 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06d76ecb-9246-4283-976f-47e171f88127/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-25 18:22:29,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:22:29,752 INFO L263 TraceCheckSpWp]: Trace formula consists of 1385 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-25 18:22:29,757 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 18:22:29,990 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2021-11-25 18:22:29,990 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-25 18:22:29,991 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [99834897] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:22:29,991 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-25 18:22:29,991 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2021-11-25 18:22:29,991 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [171503261] [2021-11-25 18:22:29,991 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:22:29,992 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 18:22:29,992 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:22:29,993 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 18:22:29,993 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-25 18:22:29,993 INFO L87 Difference]: Start difference. First operand 448 states and 586 transitions. Second operand has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 3 states have call successors, (28), 3 states have call predecessors, (28), 3 states have return successors, (23), 3 states have call predecessors, (23), 3 states have call successors, (23) [2021-11-25 18:22:30,220 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:22:30,220 INFO L93 Difference]: Finished difference Result 1246 states and 1677 transitions. [2021-11-25 18:22:30,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 18:22:30,221 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 3 states have call successors, (28), 3 states have call predecessors, (28), 3 states have return successors, (23), 3 states have call predecessors, (23), 3 states have call successors, (23) Word has length 131 [2021-11-25 18:22:30,221 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:22:30,227 INFO L225 Difference]: With dead ends: 1246 [2021-11-25 18:22:30,227 INFO L226 Difference]: Without dead ends: 843 [2021-11-25 18:22:30,229 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 131 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-25 18:22:30,230 INFO L933 BasicCegarLoop]: 549 mSDtfsCounter, 392 mSDsluCounter, 450 mSDsCounter, 0 mSdLazyCounter, 114 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 392 SdHoareTripleChecker+Valid, 951 SdHoareTripleChecker+Invalid, 121 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 114 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-25 18:22:30,231 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [392 Valid, 951 Invalid, 121 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 114 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-25 18:22:30,232 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 843 states. [2021-11-25 18:22:30,324 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 843 to 841. [2021-11-25 18:22:30,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 841 states, 527 states have (on average 1.2618595825426946) internal successors, (665), 547 states have internal predecessors, (665), 221 states have call successors, (221), 92 states have call predecessors, (221), 92 states have return successors, (233), 218 states have call predecessors, (233), 219 states have call successors, (233) [2021-11-25 18:22:30,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 841 states to 841 states and 1119 transitions. [2021-11-25 18:22:30,332 INFO L78 Accepts]: Start accepts. Automaton has 841 states and 1119 transitions. Word has length 131 [2021-11-25 18:22:30,335 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:22:30,335 INFO L470 AbstractCegarLoop]: Abstraction has 841 states and 1119 transitions. [2021-11-25 18:22:30,335 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 3 states have call successors, (28), 3 states have call predecessors, (28), 3 states have return successors, (23), 3 states have call predecessors, (23), 3 states have call successors, (23) [2021-11-25 18:22:30,336 INFO L276 IsEmpty]: Start isEmpty. Operand 841 states and 1119 transitions. [2021-11-25 18:22:30,339 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2021-11-25 18:22:30,339 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:22:30,340 INFO L514 BasicCegarLoop]: trace histogram [8, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:22:30,379 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06d76ecb-9246-4283-976f-47e171f88127/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-11-25 18:22:30,562 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06d76ecb-9246-4283-976f-47e171f88127/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 18:22:30,563 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 18:22:30,563 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:22:30,563 INFO L85 PathProgramCache]: Analyzing trace with hash 263314312, now seen corresponding path program 1 times [2021-11-25 18:22:30,563 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:22:30,563 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [175299539] [2021-11-25 18:22:30,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:22:30,564 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:22:30,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:22:30,665 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2021-11-25 18:22:30,665 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:22:30,666 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [175299539] [2021-11-25 18:22:30,666 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [175299539] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 18:22:30,666 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [670375053] [2021-11-25 18:22:30,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:22:30,666 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 18:22:30,667 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06d76ecb-9246-4283-976f-47e171f88127/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 18:22:30,667 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06d76ecb-9246-4283-976f-47e171f88127/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 18:22:30,687 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06d76ecb-9246-4283-976f-47e171f88127/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-11-25 18:22:30,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:22:30,929 INFO L263 TraceCheckSpWp]: Trace formula consists of 1387 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-25 18:22:30,933 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 18:22:31,152 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2021-11-25 18:22:31,152 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 18:22:31,377 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2021-11-25 18:22:31,377 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [670375053] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 18:22:31,377 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1559768036] [2021-11-25 18:22:31,382 INFO L159 IcfgInterpreter]: Started Sifa with 107 locations of interest [2021-11-25 18:22:31,382 INFO L166 IcfgInterpreter]: Building call graph [2021-11-25 18:22:31,383 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-25 18:22:31,383 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-25 18:22:31,383 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-25 18:22:42,193 INFO L197 IcfgInterpreter]: Interpreting procedure select_one with input of size 463 for LOIs [2021-11-25 18:22:42,469 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-25 18:22:49,278 WARN L227 SmtUtils]: Spent 5.32s on a formula simplification. DAG size of input: 463 DAG size of output: 354 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-25 18:22:54,891 WARN L227 SmtUtils]: Spent 5.52s on a formula simplification. DAG size of input: 471 DAG size of output: 362 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-25 18:23:31,484 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSifa [1559768036] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:23:31,484 INFO L186 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2021-11-25 18:23:31,484 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [4, 4, 4] total 32 [2021-11-25 18:23:31,484 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [995463603] [2021-11-25 18:23:31,484 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:23:31,485 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2021-11-25 18:23:31,485 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:23:31,485 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2021-11-25 18:23:31,486 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=161, Invalid=831, Unknown=0, NotChecked=0, Total=992 [2021-11-25 18:23:31,486 INFO L87 Difference]: Start difference. First operand 841 states and 1119 transitions. Second operand has 27 states, 18 states have (on average 3.7777777777777777) internal successors, (68), 17 states have internal predecessors, (68), 9 states have call successors, (28), 2 states have call predecessors, (28), 2 states have return successors, (23), 9 states have call predecessors, (23), 9 states have call successors, (23) [2021-11-25 18:23:38,320 WARN L227 SmtUtils]: Spent 6.69s on a formula simplification. DAG size of input: 709 DAG size of output: 517 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-25 18:23:45,377 WARN L227 SmtUtils]: Spent 6.79s on a formula simplification. DAG size of input: 708 DAG size of output: 519 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-25 18:23:52,334 WARN L227 SmtUtils]: Spent 6.73s on a formula simplification. DAG size of input: 706 DAG size of output: 521 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-25 18:23:59,296 WARN L227 SmtUtils]: Spent 6.73s on a formula simplification. DAG size of input: 706 DAG size of output: 523 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-25 18:24:06,255 WARN L227 SmtUtils]: Spent 6.73s on a formula simplification. DAG size of input: 706 DAG size of output: 525 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-25 18:24:13,216 WARN L227 SmtUtils]: Spent 6.72s on a formula simplification. DAG size of input: 706 DAG size of output: 527 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-25 18:24:20,175 WARN L227 SmtUtils]: Spent 6.70s on a formula simplification. DAG size of input: 706 DAG size of output: 529 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-25 18:24:27,124 WARN L227 SmtUtils]: Spent 6.69s on a formula simplification. DAG size of input: 706 DAG size of output: 531 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-25 18:24:29,861 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:24:29,861 INFO L93 Difference]: Finished difference Result 1635 states and 2185 transitions. [2021-11-25 18:24:29,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2021-11-25 18:24:29,861 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 18 states have (on average 3.7777777777777777) internal successors, (68), 17 states have internal predecessors, (68), 9 states have call successors, (28), 2 states have call predecessors, (28), 2 states have return successors, (23), 9 states have call predecessors, (23), 9 states have call successors, (23) Word has length 132 [2021-11-25 18:24:29,862 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:24:29,867 INFO L225 Difference]: With dead ends: 1635 [2021-11-25 18:24:29,867 INFO L226 Difference]: Without dead ends: 840 [2021-11-25 18:24:29,871 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 406 GetRequests, 368 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 564 ImplicationChecksByTransitivity, 103.8s TimeCoverageRelationStatistics Valid=239, Invalid=1321, Unknown=0, NotChecked=0, Total=1560 [2021-11-25 18:24:29,872 INFO L933 BasicCegarLoop]: 405 mSDtfsCounter, 76 mSDsluCounter, 1827 mSDsCounter, 0 mSdLazyCounter, 978 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 84 SdHoareTripleChecker+Valid, 2145 SdHoareTripleChecker+Invalid, 1012 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 978 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2021-11-25 18:24:29,872 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [84 Valid, 2145 Invalid, 1012 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 978 Invalid, 0 Unknown, 0 Unchecked, 3.5s Time] [2021-11-25 18:24:29,874 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 840 states. [2021-11-25 18:24:29,948 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 840 to 840. [2021-11-25 18:24:29,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 840 states, 526 states have (on average 1.2566539923954372) internal successors, (661), 546 states have internal predecessors, (661), 221 states have call successors, (221), 92 states have call predecessors, (221), 92 states have return successors, (233), 218 states have call predecessors, (233), 219 states have call successors, (233) [2021-11-25 18:24:29,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 840 states to 840 states and 1115 transitions. [2021-11-25 18:24:29,956 INFO L78 Accepts]: Start accepts. Automaton has 840 states and 1115 transitions. Word has length 132 [2021-11-25 18:24:29,956 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:24:29,956 INFO L470 AbstractCegarLoop]: Abstraction has 840 states and 1115 transitions. [2021-11-25 18:24:29,957 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 18 states have (on average 3.7777777777777777) internal successors, (68), 17 states have internal predecessors, (68), 9 states have call successors, (28), 2 states have call predecessors, (28), 2 states have return successors, (23), 9 states have call predecessors, (23), 9 states have call successors, (23) [2021-11-25 18:24:29,957 INFO L276 IsEmpty]: Start isEmpty. Operand 840 states and 1115 transitions. [2021-11-25 18:24:29,960 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2021-11-25 18:24:29,960 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:24:29,961 INFO L514 BasicCegarLoop]: trace histogram [8, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:24:29,999 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06d76ecb-9246-4283-976f-47e171f88127/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-11-25 18:24:30,187 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06d76ecb-9246-4283-976f-47e171f88127/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 18:24:30,187 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 18:24:30,188 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:24:30,188 INFO L85 PathProgramCache]: Analyzing trace with hash -420342915, now seen corresponding path program 1 times [2021-11-25 18:24:30,188 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:24:30,188 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [318874015] [2021-11-25 18:24:30,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:24:30,188 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:24:30,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:24:30,278 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2021-11-25 18:24:30,278 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:24:30,279 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [318874015] [2021-11-25 18:24:30,279 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [318874015] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 18:24:30,279 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1359022444] [2021-11-25 18:24:30,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:24:30,279 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 18:24:30,280 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06d76ecb-9246-4283-976f-47e171f88127/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 18:24:30,280 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06d76ecb-9246-4283-976f-47e171f88127/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 18:24:30,299 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06d76ecb-9246-4283-976f-47e171f88127/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-11-25 18:24:30,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:24:30,591 INFO L263 TraceCheckSpWp]: Trace formula consists of 1387 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-25 18:24:30,594 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 18:24:30,747 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2021-11-25 18:24:30,748 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 18:24:30,935 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2021-11-25 18:24:30,935 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1359022444] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 18:24:30,936 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [936676529] [2021-11-25 18:24:30,944 INFO L159 IcfgInterpreter]: Started Sifa with 108 locations of interest [2021-11-25 18:24:30,944 INFO L166 IcfgInterpreter]: Building call graph [2021-11-25 18:24:30,945 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-25 18:24:30,945 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-25 18:24:30,945 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-25 18:25:43,330 INFO L197 IcfgInterpreter]: Interpreting procedure setup_rjh__before__Keys with input of size 698 for LOIs [2021-11-25 18:25:44,375 INFO L197 IcfgInterpreter]: Interpreting procedure setup_bob__before__Keys with input of size 503 for LOIs [2021-11-25 18:25:45,679 INFO L197 IcfgInterpreter]: Interpreting procedure select_one with input of size 463 for LOIs [2021-11-25 18:25:45,946 INFO L197 IcfgInterpreter]: Interpreting procedure setup_chuck__before__Keys with input of size 252 for LOIs [2021-11-25 18:25:46,647 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 441 for LOIs [2021-11-25 18:25:46,889 INFO L197 IcfgInterpreter]: Interpreting procedure setClientPrivateKey with input of size 443 for LOIs [2021-11-25 18:25:47,130 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-25 18:25:53,849 WARN L227 SmtUtils]: Spent 5.24s on a formula simplification. DAG size of input: 463 DAG size of output: 354 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-25 18:25:59,323 WARN L227 SmtUtils]: Spent 5.38s on a formula simplification. DAG size of input: 471 DAG size of output: 362 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-25 18:27:07,239 WARN L227 SmtUtils]: Spent 9.72s on a formula simplification. DAG size of input: 737 DAG size of output: 597 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-25 18:27:20,978 WARN L227 SmtUtils]: Spent 7.38s on a formula simplification. DAG size of input: 726 DAG size of output: 521 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-25 18:27:29,973 WARN L227 SmtUtils]: Spent 7.60s on a formula simplification. DAG size of input: 732 DAG size of output: 551 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-25 18:27:37,417 WARN L227 SmtUtils]: Spent 6.70s on a formula simplification. DAG size of input: 736 DAG size of output: 530 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-25 18:27:44,303 WARN L227 SmtUtils]: Spent 6.58s on a formula simplification. DAG size of input: 698 DAG size of output: 530 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-25 18:27:58,401 WARN L227 SmtUtils]: Spent 5.23s on a formula simplification. DAG size of input: 516 DAG size of output: 342 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-25 18:28:05,239 WARN L227 SmtUtils]: Spent 5.79s on a formula simplification. DAG size of input: 560 DAG size of output: 396 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-25 18:28:11,578 WARN L227 SmtUtils]: Spent 5.88s on a formula simplification. DAG size of input: 560 DAG size of output: 396 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-25 18:28:28,105 WARN L227 SmtUtils]: Spent 5.68s on a formula simplification. DAG size of input: 551 DAG size of output: 391 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-25 18:28:28,108 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSifa [936676529] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:28:28,108 INFO L186 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2021-11-25 18:28:28,109 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [54] imperfect sequences [4, 4, 4] total 60 [2021-11-25 18:28:28,109 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [861229563] [2021-11-25 18:28:28,109 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:28:28,110 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 55 states [2021-11-25 18:28:28,110 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:28:28,110 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2021-11-25 18:28:28,112 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=246, Invalid=3294, Unknown=0, NotChecked=0, Total=3540 [2021-11-25 18:28:28,112 INFO L87 Difference]: Start difference. First operand 840 states and 1115 transitions. Second operand has 55 states, 37 states have (on average 1.864864864864865) internal successors, (69), 39 states have internal predecessors, (69), 16 states have call successors, (28), 7 states have call predecessors, (28), 7 states have return successors, (23), 18 states have call predecessors, (23), 16 states have call successors, (23) [2021-11-25 18:28:35,619 WARN L227 SmtUtils]: Spent 6.99s on a formula simplification. DAG size of input: 709 DAG size of output: 517 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-25 18:28:43,117 WARN L227 SmtUtils]: Spent 6.97s on a formula simplification. DAG size of input: 708 DAG size of output: 519 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-25 18:28:50,733 WARN L227 SmtUtils]: Spent 7.04s on a formula simplification. DAG size of input: 706 DAG size of output: 521 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-25 18:28:58,318 WARN L227 SmtUtils]: Spent 7.03s on a formula simplification. DAG size of input: 706 DAG size of output: 523 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-25 18:29:05,868 WARN L227 SmtUtils]: Spent 6.99s on a formula simplification. DAG size of input: 706 DAG size of output: 525 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-25 18:29:13,342 WARN L227 SmtUtils]: Spent 6.92s on a formula simplification. DAG size of input: 706 DAG size of output: 527 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-25 18:29:20,793 WARN L227 SmtUtils]: Spent 6.91s on a formula simplification. DAG size of input: 706 DAG size of output: 529 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-25 18:29:28,177 WARN L227 SmtUtils]: Spent 6.87s on a formula simplification. DAG size of input: 706 DAG size of output: 531 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate)