./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/email_spec9_productSimulator.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5e519f3a Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2a53760-7d15-436e-8e2f-6d7db7892136/bin/utaipan-7li7fVZpFI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2a53760-7d15-436e-8e2f-6d7db7892136/bin/utaipan-7li7fVZpFI/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2a53760-7d15-436e-8e2f-6d7db7892136/bin/utaipan-7li7fVZpFI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2a53760-7d15-436e-8e2f-6d7db7892136/bin/utaipan-7li7fVZpFI/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/email_spec9_productSimulator.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2a53760-7d15-436e-8e2f-6d7db7892136/bin/utaipan-7li7fVZpFI/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2a53760-7d15-436e-8e2f-6d7db7892136/bin/utaipan-7li7fVZpFI --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 a46e94d21677d8e787ff51041171bb0d6a97c638f1cb1f2181c1b14c15718344 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-5e519f3 [2022-11-03 03:38:18,133 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-03 03:38:18,136 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-03 03:38:18,186 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-03 03:38:18,187 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-03 03:38:18,189 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-03 03:38:18,192 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-03 03:38:18,194 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-03 03:38:18,196 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-03 03:38:18,197 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-03 03:38:18,199 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-03 03:38:18,200 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-03 03:38:18,201 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-03 03:38:18,202 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-03 03:38:18,203 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-03 03:38:18,205 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-03 03:38:18,206 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-03 03:38:18,207 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-03 03:38:18,209 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-03 03:38:18,211 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-03 03:38:18,213 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-03 03:38:18,222 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-03 03:38:18,224 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-03 03:38:18,225 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-03 03:38:18,229 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-03 03:38:18,233 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-03 03:38:18,234 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-03 03:38:18,235 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-03 03:38:18,235 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-03 03:38:18,237 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-03 03:38:18,238 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-03 03:38:18,239 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-03 03:38:18,241 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-03 03:38:18,243 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-03 03:38:18,244 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-03 03:38:18,245 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-03 03:38:18,247 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-03 03:38:18,247 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-03 03:38:18,247 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-03 03:38:18,248 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-03 03:38:18,249 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-03 03:38:18,250 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2a53760-7d15-436e-8e2f-6d7db7892136/bin/utaipan-7li7fVZpFI/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-11-03 03:38:18,301 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-03 03:38:18,302 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-03 03:38:18,303 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-03 03:38:18,303 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-03 03:38:18,304 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-03 03:38:18,304 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-03 03:38:18,304 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-03 03:38:18,305 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-03 03:38:18,305 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-03 03:38:18,305 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-03 03:38:18,306 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-03 03:38:18,307 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-03 03:38:18,307 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-03 03:38:18,307 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-03 03:38:18,308 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-03 03:38:18,308 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-03 03:38:18,308 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-03 03:38:18,308 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-03 03:38:18,309 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-03 03:38:18,310 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-03 03:38:18,310 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-03 03:38:18,310 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-03 03:38:18,310 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-03 03:38:18,313 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-03 03:38:18,313 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-03 03:38:18,313 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-03 03:38:18,314 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-03 03:38:18,314 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-03 03:38:18,314 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-03 03:38:18,314 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-03 03:38:18,315 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-03 03:38:18,315 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-03 03:38:18,315 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 03:38:18,316 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-03 03:38:18,316 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-03 03:38:18,316 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-03 03:38:18,317 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-03 03:38:18,317 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-03 03:38:18,317 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-03 03:38:18,317 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-03 03:38:18,318 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-03 03:38:18,318 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2a53760-7d15-436e-8e2f-6d7db7892136/bin/utaipan-7li7fVZpFI/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2a53760-7d15-436e-8e2f-6d7db7892136/bin/utaipan-7li7fVZpFI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a46e94d21677d8e787ff51041171bb0d6a97c638f1cb1f2181c1b14c15718344 [2022-11-03 03:38:18,662 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-03 03:38:18,690 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-03 03:38:18,693 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-03 03:38:18,695 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-03 03:38:18,696 INFO L275 PluginConnector]: CDTParser initialized [2022-11-03 03:38:18,698 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2a53760-7d15-436e-8e2f-6d7db7892136/bin/utaipan-7li7fVZpFI/../../sv-benchmarks/c/product-lines/email_spec9_productSimulator.cil.c [2022-11-03 03:38:18,783 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2a53760-7d15-436e-8e2f-6d7db7892136/bin/utaipan-7li7fVZpFI/data/70ba67b79/aa5735bfe86945c4b053fdd5a84e5b52/FLAGd07257652 [2022-11-03 03:38:19,581 INFO L306 CDTParser]: Found 1 translation units. [2022-11-03 03:38:19,581 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2a53760-7d15-436e-8e2f-6d7db7892136/sv-benchmarks/c/product-lines/email_spec9_productSimulator.cil.c [2022-11-03 03:38:19,606 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2a53760-7d15-436e-8e2f-6d7db7892136/bin/utaipan-7li7fVZpFI/data/70ba67b79/aa5735bfe86945c4b053fdd5a84e5b52/FLAGd07257652 [2022-11-03 03:38:19,715 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2a53760-7d15-436e-8e2f-6d7db7892136/bin/utaipan-7li7fVZpFI/data/70ba67b79/aa5735bfe86945c4b053fdd5a84e5b52 [2022-11-03 03:38:19,721 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-03 03:38:19,723 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-03 03:38:19,726 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-03 03:38:19,726 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-03 03:38:19,731 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-03 03:38:19,731 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 03:38:19" (1/1) ... [2022-11-03 03:38:19,735 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@206a6069 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:38:19, skipping insertion in model container [2022-11-03 03:38:19,735 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 03:38:19" (1/1) ... [2022-11-03 03:38:19,745 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-03 03:38:19,859 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-03 03:38:20,547 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_a2a53760-7d15-436e-8e2f-6d7db7892136/sv-benchmarks/c/product-lines/email_spec9_productSimulator.cil.c[31629,31642] [2022-11-03 03:38:20,745 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 03:38:20,758 INFO L203 MainTranslator]: Completed pre-run [2022-11-03 03:38:20,831 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_a2a53760-7d15-436e-8e2f-6d7db7892136/sv-benchmarks/c/product-lines/email_spec9_productSimulator.cil.c[31629,31642] [2022-11-03 03:38:20,944 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 03:38:20,982 INFO L208 MainTranslator]: Completed translation [2022-11-03 03:38:20,983 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:38:20 WrapperNode [2022-11-03 03:38:20,983 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-03 03:38:20,984 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-03 03:38:20,984 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-03 03:38:20,984 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-03 03:38:20,992 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:38:20" (1/1) ... [2022-11-03 03:38:21,023 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:38:20" (1/1) ... [2022-11-03 03:38:21,133 INFO L138 Inliner]: procedures = 152, calls = 288, calls flagged for inlining = 68, calls inlined = 65, statements flattened = 1326 [2022-11-03 03:38:21,134 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-03 03:38:21,134 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-03 03:38:21,135 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-03 03:38:21,135 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-03 03:38:21,159 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:38:20" (1/1) ... [2022-11-03 03:38:21,159 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:38:20" (1/1) ... [2022-11-03 03:38:21,169 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:38:20" (1/1) ... [2022-11-03 03:38:21,169 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:38:20" (1/1) ... [2022-11-03 03:38:21,197 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:38:20" (1/1) ... [2022-11-03 03:38:21,209 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:38:20" (1/1) ... [2022-11-03 03:38:21,217 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:38:20" (1/1) ... [2022-11-03 03:38:21,222 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:38:20" (1/1) ... [2022-11-03 03:38:21,234 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-03 03:38:21,235 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-03 03:38:21,235 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-03 03:38:21,235 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-03 03:38:21,236 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:38:20" (1/1) ... [2022-11-03 03:38:21,257 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 03:38:21,271 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2a53760-7d15-436e-8e2f-6d7db7892136/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 03:38:21,327 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2a53760-7d15-436e-8e2f-6d7db7892136/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-03 03:38:21,361 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2a53760-7d15-436e-8e2f-6d7db7892136/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-03 03:38:21,388 INFO L130 BoogieDeclarations]: Found specification of procedure getClientPrivateKey [2022-11-03 03:38:21,388 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientPrivateKey [2022-11-03 03:38:21,389 INFO L130 BoogieDeclarations]: Found specification of procedure setup_chuck__before__Keys [2022-11-03 03:38:21,389 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_chuck__before__Keys [2022-11-03 03:38:21,389 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing__before__Sign [2022-11-03 03:38:21,389 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing__before__Sign [2022-11-03 03:38:21,389 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookSize [2022-11-03 03:38:21,389 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookSize [2022-11-03 03:38:21,390 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailEncryptionKey [2022-11-03 03:38:21,390 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailEncryptionKey [2022-11-03 03:38:21,390 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookAddress [2022-11-03 03:38:21,390 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookAddress [2022-11-03 03:38:21,390 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailEncryptionKey [2022-11-03 03:38:21,390 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailEncryptionKey [2022-11-03 03:38:21,391 INFO L130 BoogieDeclarations]: Found specification of procedure printMail__before__Verify [2022-11-03 03:38:21,391 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail__before__Verify [2022-11-03 03:38:21,391 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2022-11-03 03:38:21,391 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2022-11-03 03:38:21,391 INFO L130 BoogieDeclarations]: Found specification of procedure setup_bob__before__Keys [2022-11-03 03:38:21,391 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_bob__before__Keys [2022-11-03 03:38:21,392 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2022-11-03 03:38:21,392 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2022-11-03 03:38:21,392 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable [2022-11-03 03:38:21,392 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable [2022-11-03 03:38:21,392 INFO L130 BoogieDeclarations]: Found specification of procedure createClientKeyringEntry [2022-11-03 03:38:21,393 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientKeyringEntry [2022-11-03 03:38:21,393 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__before__Decrypt [2022-11-03 03:38:21,393 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__before__Decrypt [2022-11-03 03:38:21,394 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing__before__Encrypt [2022-11-03 03:38:21,394 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing__before__Encrypt [2022-11-03 03:38:21,395 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsEncrypted [2022-11-03 03:38:21,396 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsEncrypted [2022-11-03 03:38:21,396 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSignKey [2022-11-03 03:38:21,396 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSignKey [2022-11-03 03:38:21,397 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAdd [2022-11-03 03:38:21,397 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAdd [2022-11-03 03:38:21,397 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2022-11-03 03:38:21,397 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__before__Forward [2022-11-03 03:38:21,397 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__before__Forward [2022-11-03 03:38:21,397 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailFrom [2022-11-03 03:38:21,397 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailFrom [2022-11-03 03:38:21,398 INFO L130 BoogieDeclarations]: Found specification of procedure queue [2022-11-03 03:38:21,398 INFO L138 BoogieDeclarations]: Found implementation of procedure queue [2022-11-03 03:38:21,398 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2022-11-03 03:38:21,399 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2022-11-03 03:38:21,399 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable__before__Encrypt [2022-11-03 03:38:21,400 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable__before__Encrypt [2022-11-03 03:38:21,401 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-03 03:38:21,401 INFO L130 BoogieDeclarations]: Found specification of procedure isSigned [2022-11-03 03:38:21,402 INFO L138 BoogieDeclarations]: Found implementation of procedure isSigned [2022-11-03 03:38:21,402 INFO L130 BoogieDeclarations]: Found specification of procedure isKeyPairValid [2022-11-03 03:38:21,403 INFO L138 BoogieDeclarations]: Found implementation of procedure isKeyPairValid [2022-11-03 03:38:21,403 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing__before__AddressBook [2022-11-03 03:38:21,403 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing__before__AddressBook [2022-11-03 03:38:21,404 INFO L130 BoogieDeclarations]: Found specification of procedure printMail__before__Encrypt [2022-11-03 03:38:21,404 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail__before__Encrypt [2022-11-03 03:38:21,404 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__before__AutoResponder [2022-11-03 03:38:21,404 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__before__AutoResponder [2022-11-03 03:38:21,404 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookSize [2022-11-03 03:38:21,404 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookSize [2022-11-03 03:38:21,405 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringUser [2022-11-03 03:38:21,405 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringUser [2022-11-03 03:38:21,405 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringPublicKey [2022-11-03 03:38:21,405 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringPublicKey [2022-11-03 03:38:21,405 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2022-11-03 03:38:21,405 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2022-11-03 03:38:21,405 INFO L130 BoogieDeclarations]: Found specification of procedure findPublicKey [2022-11-03 03:38:21,406 INFO L138 BoogieDeclarations]: Found implementation of procedure findPublicKey [2022-11-03 03:38:21,406 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2022-11-03 03:38:21,406 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2022-11-03 03:38:21,406 INFO L130 BoogieDeclarations]: Found specification of procedure isEncrypted [2022-11-03 03:38:21,406 INFO L138 BoogieDeclarations]: Found implementation of procedure isEncrypted [2022-11-03 03:38:21,406 INFO L130 BoogieDeclarations]: Found specification of procedure setup_rjh__before__Keys [2022-11-03 03:38:21,408 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_rjh__before__Keys [2022-11-03 03:38:21,408 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__before__Verify [2022-11-03 03:38:21,408 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__before__Verify [2022-11-03 03:38:21,409 INFO L130 BoogieDeclarations]: Found specification of procedure setClientPrivateKey [2022-11-03 03:38:21,409 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientPrivateKey [2022-11-03 03:38:21,409 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailTo [2022-11-03 03:38:21,410 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailTo [2022-11-03 03:38:21,410 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-03 03:38:21,410 INFO L130 BoogieDeclarations]: Found specification of procedure generateKeyPair [2022-11-03 03:38:21,410 INFO L138 BoogieDeclarations]: Found implementation of procedure generateKeyPair [2022-11-03 03:38:21,411 INFO L130 BoogieDeclarations]: Found specification of procedure printMail__before__Sign [2022-11-03 03:38:21,411 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail__before__Sign [2022-11-03 03:38:21,411 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2022-11-03 03:38:21,411 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2022-11-03 03:38:21,413 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookAddress [2022-11-03 03:38:21,413 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookAddress [2022-11-03 03:38:21,413 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-03 03:38:21,413 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-03 03:38:21,806 INFO L235 CfgBuilder]: Building ICFG [2022-11-03 03:38:21,810 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-03 03:38:23,262 INFO L276 CfgBuilder]: Performing block encoding [2022-11-03 03:38:24,135 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-03 03:38:24,135 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-03 03:38:24,141 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 03:38:24 BoogieIcfgContainer [2022-11-03 03:38:24,141 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-03 03:38:24,145 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-03 03:38:24,145 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-03 03:38:24,150 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-03 03:38:24,150 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 03:38:19" (1/3) ... [2022-11-03 03:38:24,151 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e3d0211 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 03:38:24, skipping insertion in model container [2022-11-03 03:38:24,152 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:38:20" (2/3) ... [2022-11-03 03:38:24,152 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e3d0211 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 03:38:24, skipping insertion in model container [2022-11-03 03:38:24,152 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 03:38:24" (3/3) ... [2022-11-03 03:38:24,155 INFO L112 eAbstractionObserver]: Analyzing ICFG email_spec9_productSimulator.cil.c [2022-11-03 03:38:24,182 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-03 03:38:24,185 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-03 03:38:24,287 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-03 03:38:24,306 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@3ffb071a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-03 03:38:24,306 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-03 03:38:24,313 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) [2022-11-03 03:38:24,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2022-11-03 03:38:24,333 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:38:24,334 INFO L195 NwaCegarLoop]: 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] [2022-11-03 03:38:24,334 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:38:24,340 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:38:24,341 INFO L85 PathProgramCache]: Analyzing trace with hash -1968310686, now seen corresponding path program 1 times [2022-11-03 03:38:24,353 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:38:24,354 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [778119005] [2022-11-03 03:38:24,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:38:24,355 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:38:24,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:38:24,836 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2022-11-03 03:38:24,837 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:38:24,837 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [778119005] [2022-11-03 03:38:24,838 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [778119005] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:38:24,838 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:38:24,838 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-03 03:38:24,840 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2143396565] [2022-11-03 03:38:24,841 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:38:24,870 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-03 03:38:24,870 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:38:24,905 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-03 03:38:24,906 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-03 03:38:24,910 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) [2022-11-03 03:38:25,208 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:38:25,208 INFO L93 Difference]: Finished difference Result 602 states and 816 transitions. [2022-11-03 03:38:25,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-03 03:38:25,212 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 [2022-11-03 03:38:25,212 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:38:25,250 INFO L225 Difference]: With dead ends: 602 [2022-11-03 03:38:25,250 INFO L226 Difference]: Without dead ends: 377 [2022-11-03 03:38:25,262 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-03 03:38:25,266 INFO L413 NwaCegarLoop]: 464 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 464 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-03 03:38:25,267 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 464 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-03 03:38:25,299 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 377 states. [2022-11-03 03:38:25,391 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 377 to 377. [2022-11-03 03:38:25,393 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) [2022-11-03 03:38:25,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 377 states to 377 states and 513 transitions. [2022-11-03 03:38:25,400 INFO L78 Accepts]: Start accepts. Automaton has 377 states and 513 transitions. Word has length 97 [2022-11-03 03:38:25,402 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:38:25,402 INFO L495 AbstractCegarLoop]: Abstraction has 377 states and 513 transitions. [2022-11-03 03:38:25,404 INFO L496 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) [2022-11-03 03:38:25,404 INFO L276 IsEmpty]: Start isEmpty. Operand 377 states and 513 transitions. [2022-11-03 03:38:25,420 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2022-11-03 03:38:25,421 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:38:25,422 INFO L195 NwaCegarLoop]: 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] [2022-11-03 03:38:25,422 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-03 03:38:25,423 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:38:25,423 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:38:25,424 INFO L85 PathProgramCache]: Analyzing trace with hash 474378777, now seen corresponding path program 1 times [2022-11-03 03:38:25,424 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:38:25,424 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1862371105] [2022-11-03 03:38:25,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:38:25,425 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:38:25,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:38:25,936 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2022-11-03 03:38:25,936 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:38:25,937 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1862371105] [2022-11-03 03:38:25,937 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1862371105] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:38:25,937 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:38:25,937 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 03:38:25,938 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [480338047] [2022-11-03 03:38:25,938 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:38:25,940 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 03:38:25,940 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:38:25,941 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 03:38:25,941 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 03:38:25,954 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) [2022-11-03 03:38:26,175 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:38:26,175 INFO L93 Difference]: Finished difference Result 598 states and 796 transitions. [2022-11-03 03:38:26,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 03:38:26,176 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 [2022-11-03 03:38:26,177 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:38:26,180 INFO L225 Difference]: With dead ends: 598 [2022-11-03 03:38:26,180 INFO L226 Difference]: Without dead ends: 379 [2022-11-03 03:38:26,182 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 03:38:26,186 INFO L413 NwaCegarLoop]: 461 mSDtfsCounter, 0 mSDsluCounter, 510 mSDsCounter, 0 mSdLazyCounter, 104 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 921 SdHoareTripleChecker+Invalid, 104 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 104 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-03 03:38:26,187 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 921 Invalid, 104 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 104 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-03 03:38:26,189 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 379 states. [2022-11-03 03:38:26,226 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 379 to 379. [2022-11-03 03:38:26,227 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) [2022-11-03 03:38:26,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 379 states to 379 states and 515 transitions. [2022-11-03 03:38:26,244 INFO L78 Accepts]: Start accepts. Automaton has 379 states and 515 transitions. Word has length 98 [2022-11-03 03:38:26,245 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:38:26,245 INFO L495 AbstractCegarLoop]: Abstraction has 379 states and 515 transitions. [2022-11-03 03:38:26,245 INFO L496 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) [2022-11-03 03:38:26,245 INFO L276 IsEmpty]: Start isEmpty. Operand 379 states and 515 transitions. [2022-11-03 03:38:26,248 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2022-11-03 03:38:26,248 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:38:26,248 INFO L195 NwaCegarLoop]: 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] [2022-11-03 03:38:26,248 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-03 03:38:26,249 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:38:26,249 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:38:26,249 INFO L85 PathProgramCache]: Analyzing trace with hash 897570154, now seen corresponding path program 1 times [2022-11-03 03:38:26,250 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:38:26,250 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [742079349] [2022-11-03 03:38:26,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:38:26,250 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:38:26,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:38:26,543 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2022-11-03 03:38:26,543 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:38:26,543 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [742079349] [2022-11-03 03:38:26,544 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [742079349] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:38:26,544 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:38:26,544 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 03:38:26,544 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2033838529] [2022-11-03 03:38:26,544 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:38:26,545 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 03:38:26,545 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:38:26,546 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 03:38:26,546 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 03:38:26,546 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) [2022-11-03 03:38:26,729 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:38:26,729 INFO L93 Difference]: Finished difference Result 757 states and 1044 transitions. [2022-11-03 03:38:26,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 03:38:26,730 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 [2022-11-03 03:38:26,730 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:38:26,734 INFO L225 Difference]: With dead ends: 757 [2022-11-03 03:38:26,734 INFO L226 Difference]: Without dead ends: 446 [2022-11-03 03:38:26,736 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 03:38:26,737 INFO L413 NwaCegarLoop]: 479 mSDtfsCounter, 84 mSDsluCounter, 502 mSDsCounter, 0 mSdLazyCounter, 107 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 102 SdHoareTripleChecker+Valid, 931 SdHoareTripleChecker+Invalid, 108 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 107 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 03:38:26,738 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [102 Valid, 931 Invalid, 108 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 107 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 03:38:26,740 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 446 states. [2022-11-03 03:38:26,764 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 446 to 441. [2022-11-03 03:38:26,766 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) [2022-11-03 03:38:26,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 441 states to 441 states and 620 transitions. [2022-11-03 03:38:26,770 INFO L78 Accepts]: Start accepts. Automaton has 441 states and 620 transitions. Word has length 103 [2022-11-03 03:38:26,771 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:38:26,771 INFO L495 AbstractCegarLoop]: Abstraction has 441 states and 620 transitions. [2022-11-03 03:38:26,772 INFO L496 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) [2022-11-03 03:38:26,772 INFO L276 IsEmpty]: Start isEmpty. Operand 441 states and 620 transitions. [2022-11-03 03:38:26,774 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2022-11-03 03:38:26,775 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:38:26,775 INFO L195 NwaCegarLoop]: 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] [2022-11-03 03:38:26,775 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-03 03:38:26,775 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:38:26,776 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:38:26,776 INFO L85 PathProgramCache]: Analyzing trace with hash 1577221936, now seen corresponding path program 1 times [2022-11-03 03:38:26,776 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:38:26,777 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [880577400] [2022-11-03 03:38:26,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:38:26,777 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:38:26,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:38:27,040 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2022-11-03 03:38:27,040 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:38:27,041 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [880577400] [2022-11-03 03:38:27,041 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [880577400] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 03:38:27,041 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1108351065] [2022-11-03 03:38:27,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:38:27,042 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 03:38:27,042 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2a53760-7d15-436e-8e2f-6d7db7892136/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 03:38:27,044 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2a53760-7d15-436e-8e2f-6d7db7892136/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 03:38:27,069 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2a53760-7d15-436e-8e2f-6d7db7892136/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-03 03:38:27,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:38:27,492 INFO L263 TraceCheckSpWp]: Trace formula consists of 1269 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-03 03:38:27,503 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:38:27,674 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2022-11-03 03:38:27,674 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 03:38:27,674 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1108351065] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:38:27,674 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-03 03:38:27,675 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2022-11-03 03:38:27,675 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2040714305] [2022-11-03 03:38:27,675 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:38:27,676 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 03:38:27,676 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:38:27,676 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 03:38:27,677 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-03 03:38:27,677 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) [2022-11-03 03:38:27,833 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:38:27,833 INFO L93 Difference]: Finished difference Result 859 states and 1224 transitions. [2022-11-03 03:38:27,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 03:38:27,834 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 [2022-11-03 03:38:27,835 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:38:27,855 INFO L225 Difference]: With dead ends: 859 [2022-11-03 03:38:27,855 INFO L226 Difference]: Without dead ends: 439 [2022-11-03 03:38:27,857 INFO L412 NwaCegarLoop]: 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 [2022-11-03 03:38:27,858 INFO L413 NwaCegarLoop]: 442 mSDtfsCounter, 420 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 420 SdHoareTripleChecker+Valid, 447 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 03:38:27,859 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [420 Valid, 447 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 03:38:27,861 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 439 states. [2022-11-03 03:38:27,893 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 439 to 439. [2022-11-03 03:38:27,894 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) [2022-11-03 03:38:27,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 439 states to 439 states and 608 transitions. [2022-11-03 03:38:27,899 INFO L78 Accepts]: Start accepts. Automaton has 439 states and 608 transitions. Word has length 104 [2022-11-03 03:38:27,900 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:38:27,900 INFO L495 AbstractCegarLoop]: Abstraction has 439 states and 608 transitions. [2022-11-03 03:38:27,901 INFO L496 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) [2022-11-03 03:38:27,901 INFO L276 IsEmpty]: Start isEmpty. Operand 439 states and 608 transitions. [2022-11-03 03:38:27,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2022-11-03 03:38:27,904 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:38:27,904 INFO L195 NwaCegarLoop]: 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] [2022-11-03 03:38:27,957 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2a53760-7d15-436e-8e2f-6d7db7892136/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-03 03:38:28,121 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2a53760-7d15-436e-8e2f-6d7db7892136/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 03:38:28,122 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:38:28,122 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:38:28,122 INFO L85 PathProgramCache]: Analyzing trace with hash -1981110176, now seen corresponding path program 1 times [2022-11-03 03:38:28,122 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:38:28,123 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1413562551] [2022-11-03 03:38:28,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:38:28,123 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:38:28,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:38:28,431 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2022-11-03 03:38:28,432 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:38:28,432 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1413562551] [2022-11-03 03:38:28,432 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1413562551] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 03:38:28,432 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1843793013] [2022-11-03 03:38:28,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:38:28,433 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 03:38:28,433 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2a53760-7d15-436e-8e2f-6d7db7892136/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 03:38:28,434 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2a53760-7d15-436e-8e2f-6d7db7892136/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 03:38:28,458 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2a53760-7d15-436e-8e2f-6d7db7892136/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-03 03:38:28,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:38:28,858 INFO L263 TraceCheckSpWp]: Trace formula consists of 1312 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-03 03:38:28,864 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:38:28,936 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2022-11-03 03:38:28,936 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 03:38:29,082 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2022-11-03 03:38:29,083 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1843793013] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 03:38:29,083 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1972006645] [2022-11-03 03:38:29,118 INFO L159 IcfgInterpreter]: Started Sifa with 92 locations of interest [2022-11-03 03:38:29,119 INFO L166 IcfgInterpreter]: Building call graph [2022-11-03 03:38:29,125 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-03 03:38:29,131 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-03 03:38:29,132 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-03 03:38:46,569 INFO L197 IcfgInterpreter]: Interpreting procedure select_one with input of size 458 for LOIs [2022-11-03 03:38:47,055 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-03 03:38:56,453 WARN L234 SmtUtils]: Spent 6.56s on a formula simplification. DAG size of input: 458 DAG size of output: 322 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 03:39:02,877 WARN L234 SmtUtils]: Spent 6.32s on a formula simplification. DAG size of input: 466 DAG size of output: 330 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 03:39:50,100 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [1972006645] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:39:50,100 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-11-03 03:39:50,101 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [4, 4, 4] total 28 [2022-11-03 03:39:50,102 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1564399855] [2022-11-03 03:39:50,102 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:39:50,102 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-11-03 03:39:50,103 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:39:50,103 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-11-03 03:39:50,104 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=139, Invalid=617, Unknown=0, NotChecked=0, Total=756 [2022-11-03 03:39:50,104 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) [2022-11-03 03:39:59,039 WARN L234 SmtUtils]: Spent 8.69s on a formula simplification. DAG size of input: 672 DAG size of output: 528 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 03:40:08,048 WARN L234 SmtUtils]: Spent 8.69s on a formula simplification. DAG size of input: 671 DAG size of output: 530 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 03:40:17,247 WARN L234 SmtUtils]: Spent 8.78s on a formula simplification. DAG size of input: 670 DAG size of output: 532 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 03:40:26,467 WARN L234 SmtUtils]: Spent 8.76s on a formula simplification. DAG size of input: 669 DAG size of output: 534 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 03:40:35,528 WARN L234 SmtUtils]: Spent 8.65s on a formula simplification. DAG size of input: 668 DAG size of output: 536 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 03:40:44,672 WARN L234 SmtUtils]: Spent 8.73s on a formula simplification. DAG size of input: 667 DAG size of output: 538 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 03:40:53,743 WARN L234 SmtUtils]: Spent 8.61s on a formula simplification. DAG size of input: 666 DAG size of output: 540 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 03:41:02,853 WARN L234 SmtUtils]: Spent 8.68s on a formula simplification. DAG size of input: 665 DAG size of output: 542 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 03:41:18,446 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:41:18,447 INFO L93 Difference]: Finished difference Result 874 states and 1200 transitions. [2022-11-03 03:41:18,448 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-11-03 03:41:18,448 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 [2022-11-03 03:41:18,448 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:41:18,451 INFO L225 Difference]: With dead ends: 874 [2022-11-03 03:41:18,451 INFO L226 Difference]: Without dead ends: 467 [2022-11-03 03:41:18,454 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 351 GetRequests, 315 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 428 ImplicationChecksByTransitivity, 143.8s TimeCoverageRelationStatistics Valid=233, Invalid=1173, Unknown=0, NotChecked=0, Total=1406 [2022-11-03 03:41:18,455 INFO L413 NwaCegarLoop]: 421 mSDtfsCounter, 118 mSDsluCounter, 2223 mSDsCounter, 0 mSdLazyCounter, 1190 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 126 SdHoareTripleChecker+Valid, 2557 SdHoareTripleChecker+Invalid, 1245 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 1190 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.2s IncrementalHoareTripleChecker+Time [2022-11-03 03:41:18,456 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [126 Valid, 2557 Invalid, 1245 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [55 Valid, 1190 Invalid, 0 Unknown, 0 Unchecked, 7.2s Time] [2022-11-03 03:41:18,457 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 467 states. [2022-11-03 03:41:18,588 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 467 to 459. [2022-11-03 03:41:18,589 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) [2022-11-03 03:41:18,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 459 states to 459 states and 624 transitions. [2022-11-03 03:41:18,593 INFO L78 Accepts]: Start accepts. Automaton has 459 states and 624 transitions. Word has length 113 [2022-11-03 03:41:18,594 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:41:18,594 INFO L495 AbstractCegarLoop]: Abstraction has 459 states and 624 transitions. [2022-11-03 03:41:18,594 INFO L496 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) [2022-11-03 03:41:18,595 INFO L276 IsEmpty]: Start isEmpty. Operand 459 states and 624 transitions. [2022-11-03 03:41:18,597 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2022-11-03 03:41:18,597 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:41:18,598 INFO L195 NwaCegarLoop]: 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] [2022-11-03 03:41:18,634 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2a53760-7d15-436e-8e2f-6d7db7892136/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-03 03:41:18,821 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2a53760-7d15-436e-8e2f-6d7db7892136/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 03:41:18,821 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:41:18,822 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:41:18,822 INFO L85 PathProgramCache]: Analyzing trace with hash -1483523218, now seen corresponding path program 1 times [2022-11-03 03:41:18,822 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:41:18,822 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1999046614] [2022-11-03 03:41:18,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:41:18,822 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:41:18,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:41:19,046 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2022-11-03 03:41:19,046 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:41:19,047 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1999046614] [2022-11-03 03:41:19,047 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1999046614] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 03:41:19,047 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [183524500] [2022-11-03 03:41:19,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:41:19,048 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 03:41:19,048 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2a53760-7d15-436e-8e2f-6d7db7892136/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 03:41:19,049 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2a53760-7d15-436e-8e2f-6d7db7892136/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 03:41:19,057 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2a53760-7d15-436e-8e2f-6d7db7892136/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-03 03:41:19,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:41:19,501 INFO L263 TraceCheckSpWp]: Trace formula consists of 1316 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-03 03:41:19,506 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:41:19,543 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2022-11-03 03:41:19,544 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 03:41:19,696 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2022-11-03 03:41:19,696 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [183524500] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 03:41:19,696 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [609716339] [2022-11-03 03:41:19,701 INFO L159 IcfgInterpreter]: Started Sifa with 96 locations of interest [2022-11-03 03:41:19,701 INFO L166 IcfgInterpreter]: Building call graph [2022-11-03 03:41:19,702 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-03 03:41:19,702 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-03 03:41:19,703 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-03 03:41:34,673 INFO L197 IcfgInterpreter]: Interpreting procedure select_one with input of size 458 for LOIs [2022-11-03 03:41:35,032 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-03 03:41:43,646 WARN L234 SmtUtils]: Spent 6.21s on a formula simplification. DAG size of input: 458 DAG size of output: 322 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 03:41:49,993 WARN L234 SmtUtils]: Spent 6.26s on a formula simplification. DAG size of input: 466 DAG size of output: 330 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 03:42:37,811 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [609716339] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:42:37,811 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-11-03 03:42:37,811 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [23] imperfect sequences [4, 4, 4] total 29 [2022-11-03 03:42:37,811 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1777518376] [2022-11-03 03:42:37,812 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:42:37,812 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-11-03 03:42:37,812 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:42:37,813 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-11-03 03:42:37,813 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=140, Invalid=672, Unknown=0, NotChecked=0, Total=812 [2022-11-03 03:42:37,814 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) [2022-11-03 03:42:47,255 WARN L234 SmtUtils]: Spent 9.15s on a formula simplification. DAG size of input: 672 DAG size of output: 528 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 03:42:56,262 WARN L234 SmtUtils]: Spent 8.64s on a formula simplification. DAG size of input: 671 DAG size of output: 530 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 03:43:05,239 WARN L234 SmtUtils]: Spent 8.56s on a formula simplification. DAG size of input: 670 DAG size of output: 532 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 03:43:14,080 WARN L234 SmtUtils]: Spent 8.47s on a formula simplification. DAG size of input: 669 DAG size of output: 534 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 03:43:22,931 WARN L234 SmtUtils]: Spent 8.43s on a formula simplification. DAG size of input: 668 DAG size of output: 536 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 03:43:31,823 WARN L234 SmtUtils]: Spent 8.50s on a formula simplification. DAG size of input: 667 DAG size of output: 538 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 03:43:40,888 WARN L234 SmtUtils]: Spent 8.66s on a formula simplification. DAG size of input: 666 DAG size of output: 540 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 03:43:50,099 WARN L234 SmtUtils]: Spent 8.81s on a formula simplification. DAG size of input: 665 DAG size of output: 542 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 03:43:57,257 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:43:57,257 INFO L93 Difference]: Finished difference Result 867 states and 1186 transitions. [2022-11-03 03:43:57,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-11-03 03:43:57,258 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 [2022-11-03 03:43:57,258 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:43:57,261 INFO L225 Difference]: With dead ends: 867 [2022-11-03 03:43:57,261 INFO L226 Difference]: Without dead ends: 451 [2022-11-03 03:43:57,263 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 361 GetRequests, 326 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 450 ImplicationChecksByTransitivity, 133.4s TimeCoverageRelationStatistics Valid=218, Invalid=1114, Unknown=0, NotChecked=0, Total=1332 [2022-11-03 03:43:57,264 INFO L413 NwaCegarLoop]: 420 mSDtfsCounter, 42 mSDsluCounter, 3694 mSDsCounter, 0 mSdLazyCounter, 1504 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 3980 SdHoareTripleChecker+Invalid, 1526 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 1504 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.6s IncrementalHoareTripleChecker+Time [2022-11-03 03:43:57,264 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [50 Valid, 3980 Invalid, 1526 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [22 Valid, 1504 Invalid, 0 Unknown, 0 Unchecked, 8.6s Time] [2022-11-03 03:43:57,266 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 451 states. [2022-11-03 03:43:57,367 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 451 to 451. [2022-11-03 03:43:57,368 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) [2022-11-03 03:43:57,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 451 states to 451 states and 610 transitions. [2022-11-03 03:43:57,372 INFO L78 Accepts]: Start accepts. Automaton has 451 states and 610 transitions. Word has length 117 [2022-11-03 03:43:57,372 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:43:57,373 INFO L495 AbstractCegarLoop]: Abstraction has 451 states and 610 transitions. [2022-11-03 03:43:57,373 INFO L496 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) [2022-11-03 03:43:57,373 INFO L276 IsEmpty]: Start isEmpty. Operand 451 states and 610 transitions. [2022-11-03 03:43:57,376 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2022-11-03 03:43:57,376 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:43:57,377 INFO L195 NwaCegarLoop]: 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] [2022-11-03 03:43:57,421 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2a53760-7d15-436e-8e2f-6d7db7892136/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-11-03 03:43:57,594 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2a53760-7d15-436e-8e2f-6d7db7892136/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 03:43:57,595 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:43:57,595 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:43:57,595 INFO L85 PathProgramCache]: Analyzing trace with hash 12560261, now seen corresponding path program 1 times [2022-11-03 03:43:57,595 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:43:57,595 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1559789407] [2022-11-03 03:43:57,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:43:57,596 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:43:57,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:43:57,699 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2022-11-03 03:43:57,699 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:43:57,699 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1559789407] [2022-11-03 03:43:57,699 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1559789407] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:43:57,700 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:43:57,700 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 03:43:57,700 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1864303474] [2022-11-03 03:43:57,700 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:43:57,701 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 03:43:57,701 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:43:57,701 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 03:43:57,702 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 03:43:57,702 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) [2022-11-03 03:43:57,940 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:43:57,941 INFO L93 Difference]: Finished difference Result 847 states and 1154 transitions. [2022-11-03 03:43:57,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 03:43:57,942 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 [2022-11-03 03:43:57,942 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:43:57,945 INFO L225 Difference]: With dead ends: 847 [2022-11-03 03:43:57,946 INFO L226 Difference]: Without dead ends: 448 [2022-11-03 03:43:57,947 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 03:43:57,948 INFO L413 NwaCegarLoop]: 415 mSDtfsCounter, 443 mSDsluCounter, 29 mSDsCounter, 0 mSdLazyCounter, 68 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 443 SdHoareTripleChecker+Valid, 442 SdHoareTripleChecker+Invalid, 78 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 68 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 03:43:57,949 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [443 Valid, 442 Invalid, 78 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 68 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 03:43:57,950 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 448 states. [2022-11-03 03:43:58,090 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 448 to 448. [2022-11-03 03:43:58,091 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) [2022-11-03 03:43:58,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 448 states to 448 states and 586 transitions. [2022-11-03 03:43:58,094 INFO L78 Accepts]: Start accepts. Automaton has 448 states and 586 transitions. Word has length 119 [2022-11-03 03:43:58,094 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:43:58,095 INFO L495 AbstractCegarLoop]: Abstraction has 448 states and 586 transitions. [2022-11-03 03:43:58,095 INFO L496 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) [2022-11-03 03:43:58,095 INFO L276 IsEmpty]: Start isEmpty. Operand 448 states and 586 transitions. [2022-11-03 03:43:58,097 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2022-11-03 03:43:58,098 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:43:58,101 INFO L195 NwaCegarLoop]: 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] [2022-11-03 03:43:58,101 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-03 03:43:58,101 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:43:58,102 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:43:58,102 INFO L85 PathProgramCache]: Analyzing trace with hash 571186167, now seen corresponding path program 1 times [2022-11-03 03:43:58,102 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:43:58,102 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2094031641] [2022-11-03 03:43:58,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:43:58,103 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:43:58,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:43:58,307 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2022-11-03 03:43:58,308 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:43:58,308 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2094031641] [2022-11-03 03:43:58,308 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2094031641] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 03:43:58,308 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [599132133] [2022-11-03 03:43:58,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:43:58,309 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 03:43:58,309 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2a53760-7d15-436e-8e2f-6d7db7892136/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 03:43:58,310 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2a53760-7d15-436e-8e2f-6d7db7892136/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 03:43:58,335 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2a53760-7d15-436e-8e2f-6d7db7892136/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-03 03:43:58,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:43:58,718 INFO L263 TraceCheckSpWp]: Trace formula consists of 1396 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-03 03:43:58,723 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:43:58,856 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2022-11-03 03:43:58,856 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 03:43:58,857 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [599132133] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:43:58,857 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-03 03:43:58,857 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2022-11-03 03:43:58,857 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1399785037] [2022-11-03 03:43:58,858 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:43:58,858 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 03:43:58,858 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:43:58,859 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 03:43:58,859 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-03 03:43:58,859 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) [2022-11-03 03:43:59,234 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:43:59,235 INFO L93 Difference]: Finished difference Result 1246 states and 1677 transitions. [2022-11-03 03:43:59,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 03:43:59,236 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 [2022-11-03 03:43:59,237 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:43:59,243 INFO L225 Difference]: With dead ends: 1246 [2022-11-03 03:43:59,243 INFO L226 Difference]: Without dead ends: 843 [2022-11-03 03:43:59,245 INFO L412 NwaCegarLoop]: 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 [2022-11-03 03:43:59,246 INFO L413 NwaCegarLoop]: 548 mSDtfsCounter, 392 mSDsluCounter, 450 mSDsCounter, 0 mSdLazyCounter, 116 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 392 SdHoareTripleChecker+Valid, 949 SdHoareTripleChecker+Invalid, 123 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 116 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-03 03:43:59,246 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [392 Valid, 949 Invalid, 123 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 116 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-03 03:43:59,248 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 843 states. [2022-11-03 03:43:59,411 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 843 to 841. [2022-11-03 03:43:59,413 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) [2022-11-03 03:43:59,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 841 states to 841 states and 1119 transitions. [2022-11-03 03:43:59,418 INFO L78 Accepts]: Start accepts. Automaton has 841 states and 1119 transitions. Word has length 131 [2022-11-03 03:43:59,420 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:43:59,420 INFO L495 AbstractCegarLoop]: Abstraction has 841 states and 1119 transitions. [2022-11-03 03:43:59,420 INFO L496 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) [2022-11-03 03:43:59,420 INFO L276 IsEmpty]: Start isEmpty. Operand 841 states and 1119 transitions. [2022-11-03 03:43:59,425 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2022-11-03 03:43:59,425 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:43:59,426 INFO L195 NwaCegarLoop]: 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] [2022-11-03 03:43:59,478 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2a53760-7d15-436e-8e2f-6d7db7892136/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-03 03:43:59,640 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2a53760-7d15-436e-8e2f-6d7db7892136/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2022-11-03 03:43:59,641 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:43:59,641 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:43:59,641 INFO L85 PathProgramCache]: Analyzing trace with hash 1495676108, now seen corresponding path program 1 times [2022-11-03 03:43:59,641 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:43:59,641 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2087099013] [2022-11-03 03:43:59,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:43:59,642 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:43:59,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:43:59,829 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2022-11-03 03:43:59,830 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:43:59,830 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2087099013] [2022-11-03 03:43:59,830 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2087099013] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 03:43:59,830 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [892752125] [2022-11-03 03:43:59,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:43:59,831 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 03:43:59,831 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2a53760-7d15-436e-8e2f-6d7db7892136/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 03:43:59,832 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2a53760-7d15-436e-8e2f-6d7db7892136/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 03:43:59,861 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2a53760-7d15-436e-8e2f-6d7db7892136/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-03 03:44:00,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:44:00,268 INFO L263 TraceCheckSpWp]: Trace formula consists of 1398 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-03 03:44:00,273 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:44:00,305 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2022-11-03 03:44:00,305 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 03:44:00,421 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2022-11-03 03:44:00,422 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [892752125] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 03:44:00,422 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [317109823] [2022-11-03 03:44:00,432 INFO L159 IcfgInterpreter]: Started Sifa with 107 locations of interest [2022-11-03 03:44:00,432 INFO L166 IcfgInterpreter]: Building call graph [2022-11-03 03:44:00,433 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-03 03:44:00,434 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-03 03:44:00,434 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-03 03:44:14,263 INFO L197 IcfgInterpreter]: Interpreting procedure select_one with input of size 458 for LOIs [2022-11-03 03:44:14,620 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-03 03:44:22,774 WARN L234 SmtUtils]: Spent 5.99s on a formula simplification. DAG size of input: 458 DAG size of output: 322 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 03:44:29,145 WARN L234 SmtUtils]: Spent 6.29s on a formula simplification. DAG size of input: 466 DAG size of output: 330 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 03:45:24,926 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [317109823] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:45:24,926 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-11-03 03:45:24,927 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [4, 4, 4] total 32 [2022-11-03 03:45:24,928 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1310018501] [2022-11-03 03:45:24,929 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:45:24,930 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-11-03 03:45:24,930 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:45:24,931 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-11-03 03:45:24,931 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=161, Invalid=831, Unknown=0, NotChecked=0, Total=992 [2022-11-03 03:45:24,932 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) [2022-11-03 03:45:33,156 WARN L234 SmtUtils]: Spent 8.01s on a formula simplification. DAG size of input: 672 DAG size of output: 528 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 03:45:41,653 WARN L234 SmtUtils]: Spent 8.24s on a formula simplification. DAG size of input: 671 DAG size of output: 530 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 03:45:50,469 WARN L234 SmtUtils]: Spent 8.44s on a formula simplification. DAG size of input: 670 DAG size of output: 532 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 03:45:59,113 WARN L234 SmtUtils]: Spent 8.28s on a formula simplification. DAG size of input: 669 DAG size of output: 534 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 03:46:07,448 WARN L234 SmtUtils]: Spent 7.94s on a formula simplification. DAG size of input: 668 DAG size of output: 536 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 03:46:15,548 WARN L234 SmtUtils]: Spent 7.74s on a formula simplification. DAG size of input: 667 DAG size of output: 538 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 03:46:23,621 WARN L234 SmtUtils]: Spent 7.70s on a formula simplification. DAG size of input: 666 DAG size of output: 540 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 03:46:31,714 WARN L234 SmtUtils]: Spent 7.74s on a formula simplification. DAG size of input: 665 DAG size of output: 542 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 03:46:34,800 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:46:34,800 INFO L93 Difference]: Finished difference Result 1635 states and 2185 transitions. [2022-11-03 03:46:34,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2022-11-03 03:46:34,801 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 [2022-11-03 03:46:34,801 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:46:34,806 INFO L225 Difference]: With dead ends: 1635 [2022-11-03 03:46:34,806 INFO L226 Difference]: Without dead ends: 840 [2022-11-03 03:46:34,809 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 406 GetRequests, 368 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 564 ImplicationChecksByTransitivity, 135.6s TimeCoverageRelationStatistics Valid=239, Invalid=1321, Unknown=0, NotChecked=0, Total=1560 [2022-11-03 03:46:34,810 INFO L413 NwaCegarLoop]: 404 mSDtfsCounter, 89 mSDsluCounter, 1472 mSDsCounter, 0 mSdLazyCounter, 818 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 97 SdHoareTripleChecker+Valid, 1804 SdHoareTripleChecker+Invalid, 866 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 818 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.3s IncrementalHoareTripleChecker+Time [2022-11-03 03:46:34,811 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [97 Valid, 1804 Invalid, 866 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 818 Invalid, 0 Unknown, 0 Unchecked, 4.3s Time] [2022-11-03 03:46:34,812 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 840 states. [2022-11-03 03:46:34,921 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 840 to 840. [2022-11-03 03:46:34,923 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) [2022-11-03 03:46:34,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 840 states to 840 states and 1115 transitions. [2022-11-03 03:46:34,928 INFO L78 Accepts]: Start accepts. Automaton has 840 states and 1115 transitions. Word has length 132 [2022-11-03 03:46:34,928 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:46:34,928 INFO L495 AbstractCegarLoop]: Abstraction has 840 states and 1115 transitions. [2022-11-03 03:46:34,929 INFO L496 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) [2022-11-03 03:46:34,929 INFO L276 IsEmpty]: Start isEmpty. Operand 840 states and 1115 transitions. [2022-11-03 03:46:34,932 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2022-11-03 03:46:34,932 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:46:34,933 INFO L195 NwaCegarLoop]: 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] [2022-11-03 03:46:34,981 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2a53760-7d15-436e-8e2f-6d7db7892136/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-03 03:46:35,149 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2a53760-7d15-436e-8e2f-6d7db7892136/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 03:46:35,149 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:46:35,150 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:46:35,150 INFO L85 PathProgramCache]: Analyzing trace with hash 2131341341, now seen corresponding path program 1 times [2022-11-03 03:46:35,150 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:46:35,150 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1885905827] [2022-11-03 03:46:35,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:46:35,150 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:46:35,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:46:35,349 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2022-11-03 03:46:35,350 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:46:35,350 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1885905827] [2022-11-03 03:46:35,350 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1885905827] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 03:46:35,350 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1926682780] [2022-11-03 03:46:35,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:46:35,351 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 03:46:35,351 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2a53760-7d15-436e-8e2f-6d7db7892136/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 03:46:35,352 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2a53760-7d15-436e-8e2f-6d7db7892136/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 03:46:35,389 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2a53760-7d15-436e-8e2f-6d7db7892136/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-03 03:46:35,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:46:35,748 INFO L263 TraceCheckSpWp]: Trace formula consists of 1398 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-03 03:46:35,754 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:46:35,775 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2022-11-03 03:46:35,776 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 03:46:35,884 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2022-11-03 03:46:35,884 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1926682780] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 03:46:35,885 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1379928256] [2022-11-03 03:46:35,890 INFO L159 IcfgInterpreter]: Started Sifa with 108 locations of interest [2022-11-03 03:46:35,890 INFO L166 IcfgInterpreter]: Building call graph [2022-11-03 03:46:35,891 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-03 03:46:35,891 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-03 03:46:35,891 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-03 03:48:38,545 INFO L197 IcfgInterpreter]: Interpreting procedure setup_rjh__before__Keys with input of size 510 for LOIs [2022-11-03 03:48:39,914 INFO L197 IcfgInterpreter]: Interpreting procedure setup_bob__before__Keys with input of size 516 for LOIs [2022-11-03 03:48:41,625 INFO L197 IcfgInterpreter]: Interpreting procedure sendEmail with input of size 279 for LOIs [2022-11-03 03:48:43,615 INFO L197 IcfgInterpreter]: Interpreting procedure select_one with input of size 458 for LOIs [2022-11-03 03:48:43,939 INFO L197 IcfgInterpreter]: Interpreting procedure setup_chuck__before__Keys with input of size 250 for LOIs [2022-11-03 03:48:44,764 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 445 for LOIs [2022-11-03 03:48:45,076 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailTo with input of size 247 for LOIs [2022-11-03 03:48:45,120 INFO L197 IcfgInterpreter]: Interpreting procedure setClientPrivateKey with input of size 443 for LOIs [2022-11-03 03:48:45,425 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing with input of size 281 for LOIs [2022-11-03 03:48:45,574 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing__before__Sign with input of size 269 for LOIs [2022-11-03 03:48:45,706 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing__before__AddressBook with input of size 267 for LOIs [2022-11-03 03:48:51,795 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing__before__Encrypt with input of size 453 for LOIs [2022-11-03 03:48:56,664 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailFrom with input of size 468 for LOIs [2022-11-03 03:48:58,786 INFO L197 IcfgInterpreter]: Interpreting procedure findPublicKey with input of size 251 for LOIs [2022-11-03 03:48:58,868 INFO L197 IcfgInterpreter]: Interpreting procedure getEmailTo with input of size 235 for LOIs [2022-11-03 03:48:58,913 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-03 03:49:07,020 WARN L234 SmtUtils]: Spent 5.90s on a formula simplification. DAG size of input: 458 DAG size of output: 322 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 03:49:13,261 WARN L234 SmtUtils]: Spent 6.16s on a formula simplification. DAG size of input: 466 DAG size of output: 330 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 03:50:27,747 WARN L234 SmtUtils]: Spent 5.00s on a formula simplification. DAG size of input: 445 DAG size of output: 292 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 03:50:33,259 WARN L234 SmtUtils]: Spent 5.19s on a formula simplification. DAG size of input: 468 DAG size of output: 312 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 03:50:43,797 WARN L234 SmtUtils]: Spent 8.73s on a formula simplification. DAG size of input: 750 DAG size of output: 518 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate)