./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/email_spec6_productSimulator.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6b4ec56b 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_a22c2fa0-ad87-482e-8a69-41fc7c9c8187/bin/utaipan-6cKwYrpEi9/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a22c2fa0-ad87-482e-8a69-41fc7c9c8187/bin/utaipan-6cKwYrpEi9/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a22c2fa0-ad87-482e-8a69-41fc7c9c8187/bin/utaipan-6cKwYrpEi9/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a22c2fa0-ad87-482e-8a69-41fc7c9c8187/bin/utaipan-6cKwYrpEi9/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/email_spec6_productSimulator.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a22c2fa0-ad87-482e-8a69-41fc7c9c8187/bin/utaipan-6cKwYrpEi9/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a22c2fa0-ad87-482e-8a69-41fc7c9c8187/bin/utaipan-6cKwYrpEi9 --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 c86855dab8667fe80df418e2dda62d52081f1a657b6492a63fb3d2a1da4890b5 --- 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-6b4ec56 [2022-11-20 20:15:46,200 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-20 20:15:46,202 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-20 20:15:46,222 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-20 20:15:46,222 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-20 20:15:46,223 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-20 20:15:46,225 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-20 20:15:46,226 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-20 20:15:46,228 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-20 20:15:46,229 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-20 20:15:46,230 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-20 20:15:46,231 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-20 20:15:46,232 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-20 20:15:46,233 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-20 20:15:46,234 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-20 20:15:46,235 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-20 20:15:46,236 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-20 20:15:46,237 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-20 20:15:46,239 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-20 20:15:46,242 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-20 20:15:46,243 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-20 20:15:46,245 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-20 20:15:46,246 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-20 20:15:46,247 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-20 20:15:46,251 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-20 20:15:46,251 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-20 20:15:46,252 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-20 20:15:46,253 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-20 20:15:46,253 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-20 20:15:46,254 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-20 20:15:46,255 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-20 20:15:46,256 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-20 20:15:46,257 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-20 20:15:46,258 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-20 20:15:46,259 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-20 20:15:46,260 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-20 20:15:46,261 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-20 20:15:46,261 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-20 20:15:46,262 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-20 20:15:46,263 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-20 20:15:46,264 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-20 20:15:46,265 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a22c2fa0-ad87-482e-8a69-41fc7c9c8187/bin/utaipan-6cKwYrpEi9/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-11-20 20:15:46,287 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-20 20:15:46,288 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-20 20:15:46,288 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-20 20:15:46,289 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-20 20:15:46,289 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-20 20:15:46,290 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-20 20:15:46,290 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-20 20:15:46,290 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-20 20:15:46,291 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-20 20:15:46,291 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-20 20:15:46,291 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-20 20:15:46,292 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-20 20:15:46,292 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-20 20:15:46,292 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-20 20:15:46,292 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-20 20:15:46,293 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-20 20:15:46,293 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-20 20:15:46,293 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-20 20:15:46,294 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-20 20:15:46,295 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-20 20:15:46,295 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-20 20:15:46,295 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-20 20:15:46,295 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-20 20:15:46,296 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-20 20:15:46,296 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-20 20:15:46,296 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-20 20:15:46,297 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-20 20:15:46,297 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-20 20:15:46,297 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-20 20:15:46,297 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-20 20:15:46,298 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-20 20:15:46,298 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-20 20:15:46,298 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 20:15:46,299 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-20 20:15:46,299 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-20 20:15:46,299 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-20 20:15:46,300 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-20 20:15:46,300 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-20 20:15:46,300 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-20 20:15:46,300 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-20 20:15:46,301 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-20 20:15:46,301 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_a22c2fa0-ad87-482e-8a69-41fc7c9c8187/bin/utaipan-6cKwYrpEi9/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a22c2fa0-ad87-482e-8a69-41fc7c9c8187/bin/utaipan-6cKwYrpEi9 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c86855dab8667fe80df418e2dda62d52081f1a657b6492a63fb3d2a1da4890b5 [2022-11-20 20:15:46,570 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-20 20:15:46,608 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-20 20:15:46,611 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-20 20:15:46,613 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-20 20:15:46,613 INFO L275 PluginConnector]: CDTParser initialized [2022-11-20 20:15:46,615 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a22c2fa0-ad87-482e-8a69-41fc7c9c8187/bin/utaipan-6cKwYrpEi9/../../sv-benchmarks/c/product-lines/email_spec6_productSimulator.cil.c [2022-11-20 20:15:49,749 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-20 20:15:50,154 INFO L351 CDTParser]: Found 1 translation units. [2022-11-20 20:15:50,159 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a22c2fa0-ad87-482e-8a69-41fc7c9c8187/sv-benchmarks/c/product-lines/email_spec6_productSimulator.cil.c [2022-11-20 20:15:50,181 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a22c2fa0-ad87-482e-8a69-41fc7c9c8187/bin/utaipan-6cKwYrpEi9/data/96c839055/d038bd7bdf944150b6f9c12ead5e7e3b/FLAG6be7990d1 [2022-11-20 20:15:50,195 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a22c2fa0-ad87-482e-8a69-41fc7c9c8187/bin/utaipan-6cKwYrpEi9/data/96c839055/d038bd7bdf944150b6f9c12ead5e7e3b [2022-11-20 20:15:50,198 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-20 20:15:50,199 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-20 20:15:50,201 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-20 20:15:50,201 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-20 20:15:50,208 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-20 20:15:50,209 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 08:15:50" (1/1) ... [2022-11-20 20:15:50,210 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@f716072 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:15:50, skipping insertion in model container [2022-11-20 20:15:50,210 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 08:15:50" (1/1) ... [2022-11-20 20:15:50,218 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-20 20:15:50,282 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-20 20:15:50,741 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a22c2fa0-ad87-482e-8a69-41fc7c9c8187/sv-benchmarks/c/product-lines/email_spec6_productSimulator.cil.c[17001,17014] [2022-11-20 20:15:51,165 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 20:15:51,181 INFO L203 MainTranslator]: Completed pre-run [2022-11-20 20:15:51,250 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a22c2fa0-ad87-482e-8a69-41fc7c9c8187/sv-benchmarks/c/product-lines/email_spec6_productSimulator.cil.c[17001,17014] [2022-11-20 20:15:51,370 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 20:15:51,453 INFO L208 MainTranslator]: Completed translation [2022-11-20 20:15:51,454 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:15:51 WrapperNode [2022-11-20 20:15:51,454 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-20 20:15:51,456 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-20 20:15:51,456 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-20 20:15:51,456 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-20 20:15:51,464 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:15:51" (1/1) ... [2022-11-20 20:15:51,523 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:15:51" (1/1) ... [2022-11-20 20:15:51,619 INFO L138 Inliner]: procedures = 152, calls = 290, calls flagged for inlining = 68, calls inlined = 65, statements flattened = 1339 [2022-11-20 20:15:51,622 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-20 20:15:51,623 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-20 20:15:51,623 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-20 20:15:51,623 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-20 20:15:51,634 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:15:51" (1/1) ... [2022-11-20 20:15:51,634 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:15:51" (1/1) ... [2022-11-20 20:15:51,652 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:15:51" (1/1) ... [2022-11-20 20:15:51,653 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:15:51" (1/1) ... [2022-11-20 20:15:51,691 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:15:51" (1/1) ... [2022-11-20 20:15:51,716 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:15:51" (1/1) ... [2022-11-20 20:15:51,736 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:15:51" (1/1) ... [2022-11-20 20:15:51,741 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:15:51" (1/1) ... [2022-11-20 20:15:51,757 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-20 20:15:51,758 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-20 20:15:51,759 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-20 20:15:51,759 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-20 20:15:51,766 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:15:51" (1/1) ... [2022-11-20 20:15:51,773 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 20:15:51,785 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a22c2fa0-ad87-482e-8a69-41fc7c9c8187/bin/utaipan-6cKwYrpEi9/z3 [2022-11-20 20:15:51,808 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a22c2fa0-ad87-482e-8a69-41fc7c9c8187/bin/utaipan-6cKwYrpEi9/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-20 20:15:51,826 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a22c2fa0-ad87-482e-8a69-41fc7c9c8187/bin/utaipan-6cKwYrpEi9/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-20 20:15:51,865 INFO L130 BoogieDeclarations]: Found specification of procedure getClientPrivateKey [2022-11-20 20:15:51,865 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientPrivateKey [2022-11-20 20:15:51,865 INFO L130 BoogieDeclarations]: Found specification of procedure setup_chuck__before__Keys [2022-11-20 20:15:51,866 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_chuck__before__Keys [2022-11-20 20:15:51,866 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing__before__Sign [2022-11-20 20:15:51,866 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing__before__Sign [2022-11-20 20:15:51,866 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookSize [2022-11-20 20:15:51,866 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookSize [2022-11-20 20:15:51,867 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailEncryptionKey [2022-11-20 20:15:51,867 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailEncryptionKey [2022-11-20 20:15:51,867 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookAddress [2022-11-20 20:15:51,867 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookAddress [2022-11-20 20:15:51,867 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailEncryptionKey [2022-11-20 20:15:51,868 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailEncryptionKey [2022-11-20 20:15:51,868 INFO L130 BoogieDeclarations]: Found specification of procedure printMail__before__Verify [2022-11-20 20:15:51,868 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail__before__Verify [2022-11-20 20:15:51,868 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2022-11-20 20:15:51,868 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2022-11-20 20:15:51,869 INFO L130 BoogieDeclarations]: Found specification of procedure setup_bob__before__Keys [2022-11-20 20:15:51,869 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_bob__before__Keys [2022-11-20 20:15:51,869 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2022-11-20 20:15:51,869 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2022-11-20 20:15:51,870 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable [2022-11-20 20:15:51,870 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable [2022-11-20 20:15:51,871 INFO L130 BoogieDeclarations]: Found specification of procedure createClientKeyringEntry [2022-11-20 20:15:51,871 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientKeyringEntry [2022-11-20 20:15:51,872 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__before__Decrypt [2022-11-20 20:15:51,872 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__before__Decrypt [2022-11-20 20:15:51,872 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing__before__Encrypt [2022-11-20 20:15:51,872 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing__before__Encrypt [2022-11-20 20:15:51,873 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsEncrypted [2022-11-20 20:15:51,873 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsEncrypted [2022-11-20 20:15:51,873 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSignKey [2022-11-20 20:15:51,873 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSignKey [2022-11-20 20:15:51,874 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAdd [2022-11-20 20:15:51,875 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAdd [2022-11-20 20:15:51,875 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2022-11-20 20:15:51,875 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__before__Forward [2022-11-20 20:15:51,875 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__before__Forward [2022-11-20 20:15:51,875 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailFrom [2022-11-20 20:15:51,876 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailFrom [2022-11-20 20:15:51,876 INFO L130 BoogieDeclarations]: Found specification of procedure queue [2022-11-20 20:15:51,876 INFO L138 BoogieDeclarations]: Found implementation of procedure queue [2022-11-20 20:15:51,876 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2022-11-20 20:15:51,877 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2022-11-20 20:15:51,877 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable__before__Encrypt [2022-11-20 20:15:51,878 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable__before__Encrypt [2022-11-20 20:15:51,878 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-20 20:15:51,878 INFO L130 BoogieDeclarations]: Found specification of procedure isSigned [2022-11-20 20:15:51,878 INFO L138 BoogieDeclarations]: Found implementation of procedure isSigned [2022-11-20 20:15:51,879 INFO L130 BoogieDeclarations]: Found specification of procedure isKeyPairValid [2022-11-20 20:15:51,879 INFO L138 BoogieDeclarations]: Found implementation of procedure isKeyPairValid [2022-11-20 20:15:51,879 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing__before__AddressBook [2022-11-20 20:15:51,880 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing__before__AddressBook [2022-11-20 20:15:51,880 INFO L130 BoogieDeclarations]: Found specification of procedure printMail__before__Encrypt [2022-11-20 20:15:51,880 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail__before__Encrypt [2022-11-20 20:15:51,880 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__before__AutoResponder [2022-11-20 20:15:51,880 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__before__AutoResponder [2022-11-20 20:15:51,881 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookSize [2022-11-20 20:15:51,881 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookSize [2022-11-20 20:15:51,881 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringUser [2022-11-20 20:15:51,882 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringUser [2022-11-20 20:15:51,882 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringPublicKey [2022-11-20 20:15:51,882 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringPublicKey [2022-11-20 20:15:51,882 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2022-11-20 20:15:51,882 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2022-11-20 20:15:51,883 INFO L130 BoogieDeclarations]: Found specification of procedure findPublicKey [2022-11-20 20:15:51,883 INFO L138 BoogieDeclarations]: Found implementation of procedure findPublicKey [2022-11-20 20:15:51,883 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2022-11-20 20:15:51,883 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2022-11-20 20:15:51,883 INFO L130 BoogieDeclarations]: Found specification of procedure isEncrypted [2022-11-20 20:15:51,883 INFO L138 BoogieDeclarations]: Found implementation of procedure isEncrypted [2022-11-20 20:15:51,884 INFO L130 BoogieDeclarations]: Found specification of procedure setup_rjh__before__Keys [2022-11-20 20:15:51,884 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_rjh__before__Keys [2022-11-20 20:15:51,885 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__before__Verify [2022-11-20 20:15:51,885 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__before__Verify [2022-11-20 20:15:51,885 INFO L130 BoogieDeclarations]: Found specification of procedure setClientPrivateKey [2022-11-20 20:15:51,885 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientPrivateKey [2022-11-20 20:15:51,886 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailTo [2022-11-20 20:15:51,887 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailTo [2022-11-20 20:15:51,887 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-20 20:15:51,887 INFO L130 BoogieDeclarations]: Found specification of procedure generateKeyPair [2022-11-20 20:15:51,887 INFO L138 BoogieDeclarations]: Found implementation of procedure generateKeyPair [2022-11-20 20:15:51,887 INFO L130 BoogieDeclarations]: Found specification of procedure printMail__before__Sign [2022-11-20 20:15:51,888 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail__before__Sign [2022-11-20 20:15:51,888 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2022-11-20 20:15:51,888 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2022-11-20 20:15:51,888 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookAddress [2022-11-20 20:15:51,888 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookAddress [2022-11-20 20:15:51,889 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-20 20:15:51,889 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-20 20:15:52,250 INFO L235 CfgBuilder]: Building ICFG [2022-11-20 20:15:52,256 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-20 20:15:53,497 INFO L276 CfgBuilder]: Performing block encoding [2022-11-20 20:15:54,205 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-20 20:15:54,206 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-20 20:15:54,213 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 08:15:54 BoogieIcfgContainer [2022-11-20 20:15:54,213 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-20 20:15:54,216 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-20 20:15:54,216 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-20 20:15:54,220 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-20 20:15:54,220 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 08:15:50" (1/3) ... [2022-11-20 20:15:54,222 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@605eacf5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 08:15:54, skipping insertion in model container [2022-11-20 20:15:54,222 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:15:51" (2/3) ... [2022-11-20 20:15:54,223 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@605eacf5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 08:15:54, skipping insertion in model container [2022-11-20 20:15:54,223 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 08:15:54" (3/3) ... [2022-11-20 20:15:54,225 INFO L112 eAbstractionObserver]: Analyzing ICFG email_spec6_productSimulator.cil.c [2022-11-20 20:15:54,247 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-20 20:15:54,248 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-20 20:15:54,309 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-20 20:15:54,316 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;@15f1a8c8, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-20 20:15:54,317 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-20 20:15:54,323 INFO L276 IsEmpty]: Start isEmpty. Operand has 384 states, 227 states have (on average 1.330396475770925) internal successors, (302), 247 states have internal predecessors, (302), 112 states have call successors, (112), 43 states have call predecessors, (112), 43 states have return successors, (112), 111 states have call predecessors, (112), 112 states have call successors, (112) [2022-11-20 20:15:54,342 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2022-11-20 20:15:54,343 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 20:15:54,344 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, 1, 1, 1] [2022-11-20 20:15:54,344 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 20:15:54,350 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 20:15:54,350 INFO L85 PathProgramCache]: Analyzing trace with hash -1875424870, now seen corresponding path program 1 times [2022-11-20 20:15:54,361 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 20:15:54,362 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1476883942] [2022-11-20 20:15:54,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:15:54,363 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 20:15:54,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:15:54,930 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2022-11-20 20:15:54,930 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 20:15:54,931 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1476883942] [2022-11-20 20:15:54,931 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1476883942] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 20:15:54,932 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 20:15:54,932 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-20 20:15:54,933 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [108375486] [2022-11-20 20:15:54,934 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 20:15:54,942 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-20 20:15:54,944 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 20:15:54,974 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-20 20:15:54,975 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-20 20:15:54,978 INFO L87 Difference]: Start difference. First operand has 384 states, 227 states have (on average 1.330396475770925) internal successors, (302), 247 states have internal predecessors, (302), 112 states have call successors, (112), 43 states have call predecessors, (112), 43 states have return successors, (112), 111 states have call predecessors, (112), 112 states have call successors, (112) Second operand has 2 states, 2 states have (on average 29.0) internal successors, (58), 2 states have internal predecessors, (58), 2 states have call successors, (29), 2 states have call predecessors, (29), 1 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) [2022-11-20 20:15:55,254 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 20:15:55,255 INFO L93 Difference]: Finished difference Result 610 states and 828 transitions. [2022-11-20 20:15:55,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-20 20:15:55,258 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 29.0) internal successors, (58), 2 states have internal predecessors, (58), 2 states have call successors, (29), 2 states have call predecessors, (29), 1 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) Word has length 122 [2022-11-20 20:15:55,258 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 20:15:55,281 INFO L225 Difference]: With dead ends: 610 [2022-11-20 20:15:55,281 INFO L226 Difference]: Without dead ends: 381 [2022-11-20 20:15:55,290 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 [2022-11-20 20:15:55,296 INFO L413 NwaCegarLoop]: 470 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, 470 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 [2022-11-20 20:15:55,297 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 470 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-20 20:15:55,318 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 381 states. [2022-11-20 20:15:55,405 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 381 to 381. [2022-11-20 20:15:55,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 381 states, 225 states have (on average 1.3155555555555556) internal successors, (296), 244 states have internal predecessors, (296), 112 states have call successors, (112), 43 states have call predecessors, (112), 43 states have return successors, (111), 110 states have call predecessors, (111), 111 states have call successors, (111) [2022-11-20 20:15:55,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 381 states to 381 states and 519 transitions. [2022-11-20 20:15:55,417 INFO L78 Accepts]: Start accepts. Automaton has 381 states and 519 transitions. Word has length 122 [2022-11-20 20:15:55,419 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 20:15:55,420 INFO L495 AbstractCegarLoop]: Abstraction has 381 states and 519 transitions. [2022-11-20 20:15:55,420 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 29.0) internal successors, (58), 2 states have internal predecessors, (58), 2 states have call successors, (29), 2 states have call predecessors, (29), 1 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) [2022-11-20 20:15:55,420 INFO L276 IsEmpty]: Start isEmpty. Operand 381 states and 519 transitions. [2022-11-20 20:15:55,431 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2022-11-20 20:15:55,431 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 20:15:55,431 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 20:15:55,431 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-20 20:15:55,432 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 20:15:55,433 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 20:15:55,433 INFO L85 PathProgramCache]: Analyzing trace with hash 1792078331, now seen corresponding path program 1 times [2022-11-20 20:15:55,433 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 20:15:55,434 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2109385595] [2022-11-20 20:15:55,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:15:55,434 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 20:15:55,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:15:55,967 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2022-11-20 20:15:55,967 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 20:15:55,967 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2109385595] [2022-11-20 20:15:55,968 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2109385595] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 20:15:55,968 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 20:15:55,968 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 20:15:55,969 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [57159389] [2022-11-20 20:15:55,969 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 20:15:55,971 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 20:15:55,972 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 20:15:55,972 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 20:15:55,973 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 20:15:55,973 INFO L87 Difference]: Start difference. First operand 381 states and 519 transitions. Second operand has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 2 states have call successors, (27), 2 states have call predecessors, (27), 1 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) [2022-11-20 20:15:56,213 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 20:15:56,213 INFO L93 Difference]: Finished difference Result 606 states and 808 transitions. [2022-11-20 20:15:56,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 20:15:56,214 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 2 states have call successors, (27), 2 states have call predecessors, (27), 1 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) Word has length 114 [2022-11-20 20:15:56,216 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 20:15:56,224 INFO L225 Difference]: With dead ends: 606 [2022-11-20 20:15:56,225 INFO L226 Difference]: Without dead ends: 383 [2022-11-20 20:15:56,234 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 [2022-11-20 20:15:56,237 INFO L413 NwaCegarLoop]: 467 mSDtfsCounter, 0 mSDsluCounter, 466 mSDsCounter, 0 mSdLazyCounter, 104 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 933 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 [2022-11-20 20:15:56,238 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 933 Invalid, 104 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 104 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-20 20:15:56,241 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 383 states. [2022-11-20 20:15:56,266 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 383 to 383. [2022-11-20 20:15:56,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 383 states, 227 states have (on average 1.3127753303964758) internal successors, (298), 246 states have internal predecessors, (298), 112 states have call successors, (112), 43 states have call predecessors, (112), 43 states have return successors, (111), 110 states have call predecessors, (111), 111 states have call successors, (111) [2022-11-20 20:15:56,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 383 states to 383 states and 521 transitions. [2022-11-20 20:15:56,278 INFO L78 Accepts]: Start accepts. Automaton has 383 states and 521 transitions. Word has length 114 [2022-11-20 20:15:56,280 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 20:15:56,281 INFO L495 AbstractCegarLoop]: Abstraction has 383 states and 521 transitions. [2022-11-20 20:15:56,281 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 2 states have call successors, (27), 2 states have call predecessors, (27), 1 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) [2022-11-20 20:15:56,281 INFO L276 IsEmpty]: Start isEmpty. Operand 383 states and 521 transitions. [2022-11-20 20:15:56,287 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2022-11-20 20:15:56,288 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 20:15:56,288 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] [2022-11-20 20:15:56,288 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-20 20:15:56,288 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 20:15:56,289 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 20:15:56,289 INFO L85 PathProgramCache]: Analyzing trace with hash 197624083, now seen corresponding path program 1 times [2022-11-20 20:15:56,289 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 20:15:56,290 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1788079988] [2022-11-20 20:15:56,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:15:56,290 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 20:15:56,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:15:56,452 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2022-11-20 20:15:56,453 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 20:15:56,453 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1788079988] [2022-11-20 20:15:56,453 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1788079988] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 20:15:56,453 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 20:15:56,453 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 20:15:56,454 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1725636367] [2022-11-20 20:15:56,454 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 20:15:56,454 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 20:15:56,455 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 20:15:56,455 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 20:15:56,455 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 20:15:56,455 INFO L87 Difference]: Start difference. First operand 383 states and 521 transitions. Second operand has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 2 states have call successors, (27), 2 states have call predecessors, (27), 1 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) [2022-11-20 20:15:56,681 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 20:15:56,682 INFO L93 Difference]: Finished difference Result 765 states and 1056 transitions. [2022-11-20 20:15:56,682 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 20:15:56,683 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 2 states have call successors, (27), 2 states have call predecessors, (27), 1 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) Word has length 119 [2022-11-20 20:15:56,683 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 20:15:56,689 INFO L225 Difference]: With dead ends: 765 [2022-11-20 20:15:56,689 INFO L226 Difference]: Without dead ends: 450 [2022-11-20 20:15:56,693 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 [2022-11-20 20:15:56,699 INFO L413 NwaCegarLoop]: 491 mSDtfsCounter, 84 mSDsluCounter, 459 mSDsCounter, 0 mSdLazyCounter, 105 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 102 SdHoareTripleChecker+Valid, 950 SdHoareTripleChecker+Invalid, 106 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 105 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-20 20:15:56,701 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [102 Valid, 950 Invalid, 106 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 105 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-20 20:15:56,703 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 450 states. [2022-11-20 20:15:56,728 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 450 to 445. [2022-11-20 20:15:56,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 445 states, 275 states have (on average 1.3636363636363635) internal successors, (375), 296 states have internal predecessors, (375), 126 states have call successors, (126), 43 states have call predecessors, (126), 43 states have return successors, (125), 124 states have call predecessors, (125), 125 states have call successors, (125) [2022-11-20 20:15:56,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 445 states to 445 states and 626 transitions. [2022-11-20 20:15:56,733 INFO L78 Accepts]: Start accepts. Automaton has 445 states and 626 transitions. Word has length 119 [2022-11-20 20:15:56,733 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 20:15:56,734 INFO L495 AbstractCegarLoop]: Abstraction has 445 states and 626 transitions. [2022-11-20 20:15:56,734 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 2 states have call successors, (27), 2 states have call predecessors, (27), 1 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) [2022-11-20 20:15:56,734 INFO L276 IsEmpty]: Start isEmpty. Operand 445 states and 626 transitions. [2022-11-20 20:15:56,736 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2022-11-20 20:15:56,737 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 20:15:56,737 INFO L195 NwaCegarLoop]: trace histogram [8, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 20:15:56,737 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-20 20:15:56,738 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 20:15:56,738 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 20:15:56,738 INFO L85 PathProgramCache]: Analyzing trace with hash 567398175, now seen corresponding path program 1 times [2022-11-20 20:15:56,739 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 20:15:56,739 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1772072759] [2022-11-20 20:15:56,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:15:56,739 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 20:15:56,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:15:56,972 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2022-11-20 20:15:56,972 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 20:15:56,972 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1772072759] [2022-11-20 20:15:56,973 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1772072759] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 20:15:56,973 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1266835100] [2022-11-20 20:15:56,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:15:56,973 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 20:15:56,974 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a22c2fa0-ad87-482e-8a69-41fc7c9c8187/bin/utaipan-6cKwYrpEi9/z3 [2022-11-20 20:15:56,979 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a22c2fa0-ad87-482e-8a69-41fc7c9c8187/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 20:15:57,006 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a22c2fa0-ad87-482e-8a69-41fc7c9c8187/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-20 20:15:57,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:15:57,395 INFO L263 TraceCheckSpWp]: Trace formula consists of 1394 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-20 20:15:57,406 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 20:15:57,480 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2022-11-20 20:15:57,480 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 20:15:57,605 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2022-11-20 20:15:57,605 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1266835100] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 20:15:57,605 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1181543319] [2022-11-20 20:15:57,630 INFO L159 IcfgInterpreter]: Started Sifa with 106 locations of interest [2022-11-20 20:15:57,630 INFO L166 IcfgInterpreter]: Building call graph [2022-11-20 20:15:57,635 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-20 20:15:57,641 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-20 20:15:57,641 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-20 20:16:14,507 INFO L197 IcfgInterpreter]: Interpreting procedure select_one with input of size 463 for LOIs [2022-11-20 20:16:14,993 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-20 20:16:22,419 WARN L233 SmtUtils]: Spent 5.18s on a formula simplification. DAG size of input: 463 DAG size of output: 301 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 20:16:27,755 WARN L233 SmtUtils]: Spent 5.26s on a formula simplification. DAG size of input: 471 DAG size of output: 309 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 20:17:12,120 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [1181543319] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 20:17:12,120 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-11-20 20:17:12,121 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [4, 4, 4] total 28 [2022-11-20 20:17:12,122 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1207282540] [2022-11-20 20:17:12,122 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 20:17:12,123 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-11-20 20:17:12,123 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 20:17:12,123 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-11-20 20:17:12,124 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=139, Invalid=617, Unknown=0, NotChecked=0, Total=756 [2022-11-20 20:17:12,124 INFO L87 Difference]: Start difference. First operand 445 states and 626 transitions. Second operand has 23 states, 14 states have (on average 4.571428571428571) internal successors, (64), 13 states have internal predecessors, (64), 9 states have call successors, (29), 2 states have call predecessors, (29), 2 states have return successors, (24), 9 states have call predecessors, (24), 9 states have call successors, (24) [2022-11-20 20:17:19,665 WARN L233 SmtUtils]: Spent 7.27s on a formula simplification. DAG size of input: 629 DAG size of output: 526 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 20:17:27,435 WARN L233 SmtUtils]: Spent 7.51s on a formula simplification. DAG size of input: 628 DAG size of output: 528 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 20:17:35,389 WARN L233 SmtUtils]: Spent 7.57s on a formula simplification. DAG size of input: 627 DAG size of output: 530 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 20:17:43,576 WARN L233 SmtUtils]: Spent 7.76s on a formula simplification. DAG size of input: 626 DAG size of output: 532 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 20:17:51,530 WARN L233 SmtUtils]: Spent 7.54s on a formula simplification. DAG size of input: 625 DAG size of output: 534 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 20:17:59,603 WARN L233 SmtUtils]: Spent 7.64s on a formula simplification. DAG size of input: 624 DAG size of output: 536 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 20:18:07,791 WARN L233 SmtUtils]: Spent 7.76s on a formula simplification. DAG size of input: 623 DAG size of output: 538 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 20:18:15,976 WARN L233 SmtUtils]: Spent 7.77s on a formula simplification. DAG size of input: 622 DAG size of output: 540 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 20:18:22,083 WARN L233 SmtUtils]: Spent 5.00s on a formula simplification. DAG size of input: 508 DAG size of output: 505 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 20:18:29,425 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 20:18:29,425 INFO L93 Difference]: Finished difference Result 903 states and 1259 transitions. [2022-11-20 20:18:29,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-11-20 20:18:29,426 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 14 states have (on average 4.571428571428571) internal successors, (64), 13 states have internal predecessors, (64), 9 states have call successors, (29), 2 states have call predecessors, (29), 2 states have return successors, (24), 9 states have call predecessors, (24), 9 states have call successors, (24) Word has length 129 [2022-11-20 20:18:29,427 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 20:18:29,430 INFO L225 Difference]: With dead ends: 903 [2022-11-20 20:18:29,430 INFO L226 Difference]: Without dead ends: 475 [2022-11-20 20:18:29,433 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 399 GetRequests, 363 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 428 ImplicationChecksByTransitivity, 129.5s TimeCoverageRelationStatistics Valid=233, Invalid=1173, Unknown=0, NotChecked=0, Total=1406 [2022-11-20 20:18:29,434 INFO L413 NwaCegarLoop]: 437 mSDtfsCounter, 136 mSDsluCounter, 738 mSDsCounter, 0 mSdLazyCounter, 735 mSolverCounterSat, 71 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 144 SdHoareTripleChecker+Valid, 1175 SdHoareTripleChecker+Invalid, 806 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 71 IncrementalHoareTripleChecker+Valid, 735 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.6s IncrementalHoareTripleChecker+Time [2022-11-20 20:18:29,435 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [144 Valid, 1175 Invalid, 806 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [71 Valid, 735 Invalid, 0 Unknown, 0 Unchecked, 4.6s Time] [2022-11-20 20:18:29,436 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 475 states. [2022-11-20 20:18:29,577 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 475 to 467. [2022-11-20 20:18:29,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 467 states, 290 states have (on average 1.3413793103448275) internal successors, (389), 311 states have internal predecessors, (389), 126 states have call successors, (126), 50 states have call predecessors, (126), 50 states have return successors, (125), 124 states have call predecessors, (125), 125 states have call successors, (125) [2022-11-20 20:18:29,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 467 states to 467 states and 640 transitions. [2022-11-20 20:18:29,583 INFO L78 Accepts]: Start accepts. Automaton has 467 states and 640 transitions. Word has length 129 [2022-11-20 20:18:29,584 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 20:18:29,584 INFO L495 AbstractCegarLoop]: Abstraction has 467 states and 640 transitions. [2022-11-20 20:18:29,584 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 14 states have (on average 4.571428571428571) internal successors, (64), 13 states have internal predecessors, (64), 9 states have call successors, (29), 2 states have call predecessors, (29), 2 states have return successors, (24), 9 states have call predecessors, (24), 9 states have call successors, (24) [2022-11-20 20:18:29,584 INFO L276 IsEmpty]: Start isEmpty. Operand 467 states and 640 transitions. [2022-11-20 20:18:29,587 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2022-11-20 20:18:29,588 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 20:18:29,588 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, 1, 1, 1, 1, 1] [2022-11-20 20:18:29,605 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a22c2fa0-ad87-482e-8a69-41fc7c9c8187/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-11-20 20:18:29,796 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a22c2fa0-ad87-482e-8a69-41fc7c9c8187/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 20:18:29,797 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 20:18:29,797 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 20:18:29,797 INFO L85 PathProgramCache]: Analyzing trace with hash 1532918332, now seen corresponding path program 1 times [2022-11-20 20:18:29,798 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 20:18:29,798 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1806241629] [2022-11-20 20:18:29,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:18:29,798 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 20:18:29,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:18:29,996 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2022-11-20 20:18:29,996 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 20:18:29,996 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1806241629] [2022-11-20 20:18:29,996 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1806241629] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 20:18:29,997 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1145677378] [2022-11-20 20:18:29,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:18:29,997 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 20:18:29,997 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a22c2fa0-ad87-482e-8a69-41fc7c9c8187/bin/utaipan-6cKwYrpEi9/z3 [2022-11-20 20:18:29,999 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a22c2fa0-ad87-482e-8a69-41fc7c9c8187/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 20:18:30,032 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a22c2fa0-ad87-482e-8a69-41fc7c9c8187/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-20 20:18:30,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:18:30,461 INFO L263 TraceCheckSpWp]: Trace formula consists of 1355 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-20 20:18:30,467 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 20:18:30,642 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2022-11-20 20:18:30,643 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 20:18:30,643 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1145677378] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 20:18:30,643 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-20 20:18:30,644 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2022-11-20 20:18:30,644 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [484405153] [2022-11-20 20:18:30,644 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 20:18:30,645 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 20:18:30,645 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 20:18:30,645 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 20:18:30,646 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-20 20:18:30,646 INFO L87 Difference]: Start difference. First operand 467 states and 640 transitions. Second operand has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 3 states have call successors, (27), 3 states have call predecessors, (27), 3 states have return successors, (22), 3 states have call predecessors, (22), 3 states have call successors, (22) [2022-11-20 20:18:30,921 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 20:18:30,921 INFO L93 Difference]: Finished difference Result 679 states and 928 transitions. [2022-11-20 20:18:30,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 20:18:30,922 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 3 states have call successors, (27), 3 states have call predecessors, (27), 3 states have return successors, (22), 3 states have call predecessors, (22), 3 states have call successors, (22) Word has length 124 [2022-11-20 20:18:30,923 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 20:18:30,926 INFO L225 Difference]: With dead ends: 679 [2022-11-20 20:18:30,927 INFO L226 Difference]: Without dead ends: 463 [2022-11-20 20:18:30,928 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 127 GetRequests, 124 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-20 20:18:30,930 INFO L413 NwaCegarLoop]: 447 mSDtfsCounter, 421 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 421 SdHoareTripleChecker+Valid, 452 SdHoareTripleChecker+Invalid, 63 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 20:18:30,930 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [421 Valid, 452 Invalid, 63 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 20:18:30,932 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 463 states. [2022-11-20 20:18:31,054 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 463 to 463. [2022-11-20 20:18:31,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 463 states, 289 states have (on average 1.3321799307958477) internal successors, (385), 308 states have internal predecessors, (385), 123 states have call successors, (123), 50 states have call predecessors, (123), 50 states have return successors, (122), 121 states have call predecessors, (122), 122 states have call successors, (122) [2022-11-20 20:18:31,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 463 states to 463 states and 630 transitions. [2022-11-20 20:18:31,060 INFO L78 Accepts]: Start accepts. Automaton has 463 states and 630 transitions. Word has length 124 [2022-11-20 20:18:31,060 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 20:18:31,061 INFO L495 AbstractCegarLoop]: Abstraction has 463 states and 630 transitions. [2022-11-20 20:18:31,061 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 3 states have call successors, (27), 3 states have call predecessors, (27), 3 states have return successors, (22), 3 states have call predecessors, (22), 3 states have call successors, (22) [2022-11-20 20:18:31,061 INFO L276 IsEmpty]: Start isEmpty. Operand 463 states and 630 transitions. [2022-11-20 20:18:31,064 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2022-11-20 20:18:31,065 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 20:18:31,065 INFO L195 NwaCegarLoop]: trace histogram [8, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 20:18:31,080 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a22c2fa0-ad87-482e-8a69-41fc7c9c8187/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-20 20:18:31,274 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a22c2fa0-ad87-482e-8a69-41fc7c9c8187/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 20:18:31,274 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 20:18:31,275 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 20:18:31,275 INFO L85 PathProgramCache]: Analyzing trace with hash 1264978221, now seen corresponding path program 1 times [2022-11-20 20:18:31,275 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 20:18:31,276 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1805072618] [2022-11-20 20:18:31,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:18:31,276 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 20:18:31,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:18:31,543 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2022-11-20 20:18:31,544 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 20:18:31,544 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1805072618] [2022-11-20 20:18:31,544 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1805072618] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 20:18:31,544 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [153652566] [2022-11-20 20:18:31,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:18:31,545 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 20:18:31,545 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a22c2fa0-ad87-482e-8a69-41fc7c9c8187/bin/utaipan-6cKwYrpEi9/z3 [2022-11-20 20:18:31,547 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a22c2fa0-ad87-482e-8a69-41fc7c9c8187/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 20:18:31,588 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a22c2fa0-ad87-482e-8a69-41fc7c9c8187/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-20 20:18:32,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:18:32,014 INFO L263 TraceCheckSpWp]: Trace formula consists of 1398 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-20 20:18:32,019 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 20:18:32,056 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2022-11-20 20:18:32,056 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 20:18:32,175 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2022-11-20 20:18:32,176 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [153652566] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 20:18:32,176 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1067287447] [2022-11-20 20:18:32,181 INFO L159 IcfgInterpreter]: Started Sifa with 110 locations of interest [2022-11-20 20:18:32,181 INFO L166 IcfgInterpreter]: Building call graph [2022-11-20 20:18:32,182 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-20 20:18:32,182 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-20 20:18:32,183 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-20 20:18:47,699 INFO L197 IcfgInterpreter]: Interpreting procedure select_one with input of size 463 for LOIs [2022-11-20 20:18:48,055 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-20 20:18:55,923 WARN L233 SmtUtils]: Spent 5.58s on a formula simplification. DAG size of input: 463 DAG size of output: 301 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 20:19:01,790 WARN L233 SmtUtils]: Spent 5.79s on a formula simplification. DAG size of input: 471 DAG size of output: 309 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 20:19:55,646 WARN L233 SmtUtils]: Spent 5.71s on a formula simplification. DAG size of input: 518 DAG size of output: 515 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 20:19:55,651 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [1067287447] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 20:19:55,651 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-11-20 20:19:55,652 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [23] imperfect sequences [4, 4, 4] total 29 [2022-11-20 20:19:55,652 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [269430136] [2022-11-20 20:19:55,652 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 20:19:55,652 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-11-20 20:19:55,653 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 20:19:55,653 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-11-20 20:19:55,654 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=140, Invalid=672, Unknown=0, NotChecked=0, Total=812 [2022-11-20 20:19:55,654 INFO L87 Difference]: Start difference. First operand 463 states and 630 transitions. Second operand has 24 states, 15 states have (on average 4.533333333333333) internal successors, (68), 14 states have internal predecessors, (68), 9 states have call successors, (29), 2 states have call predecessors, (29), 2 states have return successors, (24), 9 states have call predecessors, (24), 9 states have call successors, (24) [2022-11-20 20:20:04,802 WARN L233 SmtUtils]: Spent 8.80s on a formula simplification. DAG size of input: 629 DAG size of output: 526 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 20:20:14,161 WARN L233 SmtUtils]: Spent 8.94s on a formula simplification. DAG size of input: 628 DAG size of output: 528 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 20:20:22,394 WARN L233 SmtUtils]: Spent 7.75s on a formula simplification. DAG size of input: 627 DAG size of output: 530 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 20:20:31,466 WARN L233 SmtUtils]: Spent 8.63s on a formula simplification. DAG size of input: 626 DAG size of output: 532 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 20:20:40,709 WARN L233 SmtUtils]: Spent 8.80s on a formula simplification. DAG size of input: 625 DAG size of output: 534 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 20:20:49,873 WARN L233 SmtUtils]: Spent 8.72s on a formula simplification. DAG size of input: 624 DAG size of output: 536 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 20:20:58,775 WARN L233 SmtUtils]: Spent 8.46s on a formula simplification. DAG size of input: 623 DAG size of output: 538 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 20:21:08,025 WARN L233 SmtUtils]: Spent 8.84s on a formula simplification. DAG size of input: 622 DAG size of output: 540 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 20:21:14,163 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 20:21:14,164 INFO L93 Difference]: Finished difference Result 875 states and 1198 transitions. [2022-11-20 20:21:14,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-11-20 20:21:14,165 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 15 states have (on average 4.533333333333333) internal successors, (68), 14 states have internal predecessors, (68), 9 states have call successors, (29), 2 states have call predecessors, (29), 2 states have return successors, (24), 9 states have call predecessors, (24), 9 states have call successors, (24) Word has length 133 [2022-11-20 20:21:14,165 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 20:21:14,168 INFO L225 Difference]: With dead ends: 875 [2022-11-20 20:21:14,169 INFO L226 Difference]: Without dead ends: 455 [2022-11-20 20:21:14,171 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 409 GetRequests, 374 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 450 ImplicationChecksByTransitivity, 138.0s TimeCoverageRelationStatistics Valid=218, Invalid=1114, Unknown=0, NotChecked=0, Total=1332 [2022-11-20 20:21:14,172 INFO L413 NwaCegarLoop]: 426 mSDtfsCounter, 44 mSDsluCounter, 2896 mSDsCounter, 0 mSdLazyCounter, 1222 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 3322 SdHoareTripleChecker+Invalid, 1253 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 1222 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.8s IncrementalHoareTripleChecker+Time [2022-11-20 20:21:14,173 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [52 Valid, 3322 Invalid, 1253 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [31 Valid, 1222 Invalid, 0 Unknown, 0 Unchecked, 7.8s Time] [2022-11-20 20:21:14,174 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 455 states. [2022-11-20 20:21:14,298 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 455 to 455. [2022-11-20 20:21:14,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 455 states, 281 states have (on average 1.3202846975088969) internal successors, (371), 300 states have internal predecessors, (371), 123 states have call successors, (123), 50 states have call predecessors, (123), 50 states have return successors, (122), 121 states have call predecessors, (122), 122 states have call successors, (122) [2022-11-20 20:21:14,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 455 states to 455 states and 616 transitions. [2022-11-20 20:21:14,303 INFO L78 Accepts]: Start accepts. Automaton has 455 states and 616 transitions. Word has length 133 [2022-11-20 20:21:14,304 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 20:21:14,304 INFO L495 AbstractCegarLoop]: Abstraction has 455 states and 616 transitions. [2022-11-20 20:21:14,304 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 15 states have (on average 4.533333333333333) internal successors, (68), 14 states have internal predecessors, (68), 9 states have call successors, (29), 2 states have call predecessors, (29), 2 states have return successors, (24), 9 states have call predecessors, (24), 9 states have call successors, (24) [2022-11-20 20:21:14,304 INFO L276 IsEmpty]: Start isEmpty. Operand 455 states and 616 transitions. [2022-11-20 20:21:14,307 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2022-11-20 20:21:14,307 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 20:21:14,308 INFO L195 NwaCegarLoop]: trace histogram [8, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 20:21:14,323 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a22c2fa0-ad87-482e-8a69-41fc7c9c8187/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-20 20:21:14,517 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a22c2fa0-ad87-482e-8a69-41fc7c9c8187/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 20:21:14,519 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 20:21:14,521 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 20:21:14,522 INFO L85 PathProgramCache]: Analyzing trace with hash 1639422148, now seen corresponding path program 1 times [2022-11-20 20:21:14,522 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 20:21:14,522 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [745062310] [2022-11-20 20:21:14,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:21:14,523 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 20:21:14,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:21:14,655 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2022-11-20 20:21:14,656 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 20:21:14,656 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [745062310] [2022-11-20 20:21:14,656 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [745062310] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 20:21:14,656 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 20:21:14,656 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 20:21:14,657 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1775560611] [2022-11-20 20:21:14,657 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 20:21:14,658 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 20:21:14,658 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 20:21:14,658 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 20:21:14,658 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 20:21:14,659 INFO L87 Difference]: Start difference. First operand 455 states and 616 transitions. Second operand has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 2 states have call successors, (29), 2 states have call predecessors, (29), 1 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) [2022-11-20 20:21:14,942 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 20:21:14,943 INFO L93 Difference]: Finished difference Result 855 states and 1166 transitions. [2022-11-20 20:21:14,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 20:21:14,943 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 2 states have call successors, (29), 2 states have call predecessors, (29), 1 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) Word has length 135 [2022-11-20 20:21:14,945 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 20:21:14,949 INFO L225 Difference]: With dead ends: 855 [2022-11-20 20:21:14,950 INFO L226 Difference]: Without dead ends: 452 [2022-11-20 20:21:14,952 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 [2022-11-20 20:21:14,953 INFO L413 NwaCegarLoop]: 421 mSDtfsCounter, 449 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 68 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 449 SdHoareTripleChecker+Valid, 448 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 [2022-11-20 20:21:14,954 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [449 Valid, 448 Invalid, 78 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 68 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 20:21:14,957 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 452 states. [2022-11-20 20:21:15,094 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 452 to 452. [2022-11-20 20:21:15,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 452 states, 281 states have (on average 1.2562277580071175) internal successors, (353), 293 states have internal predecessors, (353), 120 states have call successors, (120), 50 states have call predecessors, (120), 50 states have return successors, (119), 118 states have call predecessors, (119), 119 states have call successors, (119) [2022-11-20 20:21:15,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 452 states to 452 states and 592 transitions. [2022-11-20 20:21:15,100 INFO L78 Accepts]: Start accepts. Automaton has 452 states and 592 transitions. Word has length 135 [2022-11-20 20:21:15,100 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 20:21:15,100 INFO L495 AbstractCegarLoop]: Abstraction has 452 states and 592 transitions. [2022-11-20 20:21:15,101 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 2 states have call successors, (29), 2 states have call predecessors, (29), 1 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) [2022-11-20 20:21:15,101 INFO L276 IsEmpty]: Start isEmpty. Operand 452 states and 592 transitions. [2022-11-20 20:21:15,105 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2022-11-20 20:21:15,106 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 20:21:15,106 INFO L195 NwaCegarLoop]: trace histogram [8, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 20:21:15,106 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-20 20:21:15,107 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 20:21:15,107 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 20:21:15,107 INFO L85 PathProgramCache]: Analyzing trace with hash -212878243, now seen corresponding path program 1 times [2022-11-20 20:21:15,108 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 20:21:15,108 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [950706966] [2022-11-20 20:21:15,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:21:15,108 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 20:21:15,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:21:15,342 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2022-11-20 20:21:15,342 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 20:21:15,342 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [950706966] [2022-11-20 20:21:15,343 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [950706966] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 20:21:15,343 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [397063530] [2022-11-20 20:21:15,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:21:15,343 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 20:21:15,344 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a22c2fa0-ad87-482e-8a69-41fc7c9c8187/bin/utaipan-6cKwYrpEi9/z3 [2022-11-20 20:21:15,345 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a22c2fa0-ad87-482e-8a69-41fc7c9c8187/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 20:21:15,374 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a22c2fa0-ad87-482e-8a69-41fc7c9c8187/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-20 20:21:15,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:21:15,861 INFO L263 TraceCheckSpWp]: Trace formula consists of 1485 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-20 20:21:15,867 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 20:21:16,000 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2022-11-20 20:21:16,000 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 20:21:16,001 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [397063530] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 20:21:16,001 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-20 20:21:16,001 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2022-11-20 20:21:16,001 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1164186047] [2022-11-20 20:21:16,002 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 20:21:16,002 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 20:21:16,002 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 20:21:16,003 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 20:21:16,003 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-20 20:21:16,003 INFO L87 Difference]: Start difference. First operand 452 states and 592 transitions. Second operand has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 3 states have call successors, (32), 3 states have call predecessors, (32), 3 states have return successors, (27), 3 states have call predecessors, (27), 3 states have call successors, (27) [2022-11-20 20:21:16,455 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 20:21:16,455 INFO L93 Difference]: Finished difference Result 1258 states and 1695 transitions. [2022-11-20 20:21:16,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 20:21:16,456 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 3 states have call successors, (32), 3 states have call predecessors, (32), 3 states have return successors, (27), 3 states have call predecessors, (27), 3 states have call successors, (27) Word has length 147 [2022-11-20 20:21:16,457 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 20:21:16,463 INFO L225 Difference]: With dead ends: 1258 [2022-11-20 20:21:16,464 INFO L226 Difference]: Without dead ends: 851 [2022-11-20 20:21:16,466 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 147 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-20 20:21:16,467 INFO L413 NwaCegarLoop]: 547 mSDtfsCounter, 398 mSDsluCounter, 407 mSDsCounter, 0 mSdLazyCounter, 116 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 398 SdHoareTripleChecker+Valid, 954 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 [2022-11-20 20:21:16,468 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [398 Valid, 954 Invalid, 123 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 116 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-20 20:21:16,470 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 851 states. [2022-11-20 20:21:16,655 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 851 to 849. [2022-11-20 20:21:16,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 849 states, 531 states have (on average 1.2598870056497176) internal successors, (669), 551 states have internal predecessors, (669), 225 states have call successors, (225), 92 states have call predecessors, (225), 92 states have return successors, (237), 222 states have call predecessors, (237), 223 states have call successors, (237) [2022-11-20 20:21:16,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 849 states to 849 states and 1131 transitions. [2022-11-20 20:21:16,664 INFO L78 Accepts]: Start accepts. Automaton has 849 states and 1131 transitions. Word has length 147 [2022-11-20 20:21:16,667 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 20:21:16,667 INFO L495 AbstractCegarLoop]: Abstraction has 849 states and 1131 transitions. [2022-11-20 20:21:16,667 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 3 states have call successors, (32), 3 states have call predecessors, (32), 3 states have return successors, (27), 3 states have call predecessors, (27), 3 states have call successors, (27) [2022-11-20 20:21:16,668 INFO L276 IsEmpty]: Start isEmpty. Operand 849 states and 1131 transitions. [2022-11-20 20:21:16,671 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2022-11-20 20:21:16,672 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 20:21:16,672 INFO L195 NwaCegarLoop]: trace histogram [8, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 20:21:16,688 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a22c2fa0-ad87-482e-8a69-41fc7c9c8187/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-20 20:21:16,882 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a22c2fa0-ad87-482e-8a69-41fc7c9c8187/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2022-11-20 20:21:16,882 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 20:21:16,882 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 20:21:16,883 INFO L85 PathProgramCache]: Analyzing trace with hash -1125238850, now seen corresponding path program 1 times [2022-11-20 20:21:16,883 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 20:21:16,883 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1001271552] [2022-11-20 20:21:16,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:21:16,883 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 20:21:16,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:21:17,094 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2022-11-20 20:21:17,095 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 20:21:17,095 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1001271552] [2022-11-20 20:21:17,095 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1001271552] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 20:21:17,095 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [15166403] [2022-11-20 20:21:17,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:21:17,096 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 20:21:17,096 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a22c2fa0-ad87-482e-8a69-41fc7c9c8187/bin/utaipan-6cKwYrpEi9/z3 [2022-11-20 20:21:17,097 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a22c2fa0-ad87-482e-8a69-41fc7c9c8187/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 20:21:17,134 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a22c2fa0-ad87-482e-8a69-41fc7c9c8187/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-20 20:21:17,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:21:17,616 INFO L263 TraceCheckSpWp]: Trace formula consists of 1487 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-20 20:21:17,622 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 20:21:17,652 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2022-11-20 20:21:17,653 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 20:21:17,785 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2022-11-20 20:21:17,785 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [15166403] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 20:21:17,785 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [157742510] [2022-11-20 20:21:17,799 INFO L159 IcfgInterpreter]: Started Sifa with 121 locations of interest [2022-11-20 20:21:17,800 INFO L166 IcfgInterpreter]: Building call graph [2022-11-20 20:21:17,801 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-20 20:21:17,802 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-20 20:21:17,802 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-20 20:21:34,857 INFO L197 IcfgInterpreter]: Interpreting procedure select_one with input of size 463 for LOIs [2022-11-20 20:21:35,294 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-20 20:21:44,134 WARN L233 SmtUtils]: Spent 6.21s on a formula simplification. DAG size of input: 463 DAG size of output: 301 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 20:21:50,571 WARN L233 SmtUtils]: Spent 6.34s on a formula simplification. DAG size of input: 471 DAG size of output: 309 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 20:22:50,625 WARN L233 SmtUtils]: Spent 5.31s on a formula simplification. DAG size of input: 522 DAG size of output: 519 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 20:22:50,631 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [157742510] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 20:22:50,631 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-11-20 20:22:50,631 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [4, 4, 4] total 32 [2022-11-20 20:22:50,631 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2011027870] [2022-11-20 20:22:50,632 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 20:22:50,632 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-11-20 20:22:50,633 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 20:22:50,633 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-11-20 20:22:50,634 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=161, Invalid=831, Unknown=0, NotChecked=0, Total=992 [2022-11-20 20:22:50,634 INFO L87 Difference]: Start difference. First operand 849 states and 1131 transitions. Second operand has 27 states, 18 states have (on average 4.166666666666667) internal successors, (75), 17 states have internal predecessors, (75), 9 states have call successors, (32), 2 states have call predecessors, (32), 2 states have return successors, (27), 9 states have call predecessors, (27), 9 states have call successors, (27) [2022-11-20 20:22:58,784 WARN L233 SmtUtils]: Spent 7.90s on a formula simplification. DAG size of input: 629 DAG size of output: 526 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 20:23:06,479 WARN L233 SmtUtils]: Spent 7.40s on a formula simplification. DAG size of input: 628 DAG size of output: 528 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 20:23:13,899 WARN L233 SmtUtils]: Spent 7.07s on a formula simplification. DAG size of input: 627 DAG size of output: 530 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 20:23:21,337 WARN L233 SmtUtils]: Spent 7.08s on a formula simplification. DAG size of input: 626 DAG size of output: 532 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 20:23:28,846 WARN L233 SmtUtils]: Spent 7.12s on a formula simplification. DAG size of input: 625 DAG size of output: 534 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 20:23:36,390 WARN L233 SmtUtils]: Spent 7.15s on a formula simplification. DAG size of input: 624 DAG size of output: 536 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 20:23:43,886 WARN L233 SmtUtils]: Spent 7.11s on a formula simplification. DAG size of input: 623 DAG size of output: 538 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 20:23:51,346 WARN L233 SmtUtils]: Spent 7.05s on a formula simplification. DAG size of input: 622 DAG size of output: 540 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 20:23:53,623 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 20:23:53,623 INFO L93 Difference]: Finished difference Result 1651 states and 2209 transitions. [2022-11-20 20:23:53,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2022-11-20 20:23:53,624 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 18 states have (on average 4.166666666666667) internal successors, (75), 17 states have internal predecessors, (75), 9 states have call successors, (32), 2 states have call predecessors, (32), 2 states have return successors, (27), 9 states have call predecessors, (27), 9 states have call successors, (27) Word has length 148 [2022-11-20 20:23:53,624 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 20:23:53,629 INFO L225 Difference]: With dead ends: 1651 [2022-11-20 20:23:53,630 INFO L226 Difference]: Without dead ends: 848 [2022-11-20 20:23:53,633 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 454 GetRequests, 416 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 564 ImplicationChecksByTransitivity, 134.4s TimeCoverageRelationStatistics Valid=239, Invalid=1321, Unknown=0, NotChecked=0, Total=1560 [2022-11-20 20:23:53,633 INFO L413 NwaCegarLoop]: 410 mSDtfsCounter, 79 mSDsluCounter, 1068 mSDsCounter, 0 mSdLazyCounter, 652 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 87 SdHoareTripleChecker+Valid, 1478 SdHoareTripleChecker+Invalid, 694 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 652 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time [2022-11-20 20:23:53,634 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [87 Valid, 1478 Invalid, 694 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 652 Invalid, 0 Unknown, 0 Unchecked, 3.7s Time] [2022-11-20 20:23:53,636 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 848 states. [2022-11-20 20:23:53,785 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 848 to 848. [2022-11-20 20:23:53,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 848 states, 530 states have (on average 1.2547169811320755) internal successors, (665), 550 states have internal predecessors, (665), 225 states have call successors, (225), 92 states have call predecessors, (225), 92 states have return successors, (237), 222 states have call predecessors, (237), 223 states have call successors, (237) [2022-11-20 20:23:53,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 848 states to 848 states and 1127 transitions. [2022-11-20 20:23:53,794 INFO L78 Accepts]: Start accepts. Automaton has 848 states and 1127 transitions. Word has length 148 [2022-11-20 20:23:53,794 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 20:23:53,794 INFO L495 AbstractCegarLoop]: Abstraction has 848 states and 1127 transitions. [2022-11-20 20:23:53,795 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 18 states have (on average 4.166666666666667) internal successors, (75), 17 states have internal predecessors, (75), 9 states have call successors, (32), 2 states have call predecessors, (32), 2 states have return successors, (27), 9 states have call predecessors, (27), 9 states have call successors, (27) [2022-11-20 20:23:53,795 INFO L276 IsEmpty]: Start isEmpty. Operand 848 states and 1127 transitions. [2022-11-20 20:23:53,799 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2022-11-20 20:23:53,799 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 20:23:53,799 INFO L195 NwaCegarLoop]: trace histogram [8, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 20:23:53,815 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a22c2fa0-ad87-482e-8a69-41fc7c9c8187/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2022-11-20 20:23:54,016 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a22c2fa0-ad87-482e-8a69-41fc7c9c8187/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2022-11-20 20:23:54,016 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 20:23:54,017 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 20:23:54,017 INFO L85 PathProgramCache]: Analyzing trace with hash 5200269, now seen corresponding path program 1 times [2022-11-20 20:23:54,017 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 20:23:54,017 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [593137200] [2022-11-20 20:23:54,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:23:54,017 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 20:23:54,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:23:54,193 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2022-11-20 20:23:54,194 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 20:23:54,194 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [593137200] [2022-11-20 20:23:54,194 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [593137200] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 20:23:54,194 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1528366886] [2022-11-20 20:23:54,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:23:54,195 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 20:23:54,195 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a22c2fa0-ad87-482e-8a69-41fc7c9c8187/bin/utaipan-6cKwYrpEi9/z3 [2022-11-20 20:23:54,199 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a22c2fa0-ad87-482e-8a69-41fc7c9c8187/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 20:23:54,222 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a22c2fa0-ad87-482e-8a69-41fc7c9c8187/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-20 20:23:54,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:23:54,596 INFO L263 TraceCheckSpWp]: Trace formula consists of 1487 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-20 20:23:54,604 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 20:23:54,623 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2022-11-20 20:23:54,623 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 20:23:54,725 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2022-11-20 20:23:54,725 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1528366886] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 20:23:54,725 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2080994886] [2022-11-20 20:23:54,728 INFO L159 IcfgInterpreter]: Started Sifa with 122 locations of interest [2022-11-20 20:23:54,728 INFO L166 IcfgInterpreter]: Building call graph [2022-11-20 20:23:54,728 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-20 20:23:54,729 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-20 20:23:54,729 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-20 20:26:25,394 INFO L197 IcfgInterpreter]: Interpreting procedure setup_rjh__before__Keys with input of size 511 for LOIs [2022-11-20 20:26:26,717 INFO L197 IcfgInterpreter]: Interpreting procedure setup_bob__before__Keys with input of size 517 for LOIs [2022-11-20 20:26:28,903 INFO L197 IcfgInterpreter]: Interpreting procedure sendEmail with input of size 281 for LOIs [2022-11-20 20:26:31,017 INFO L197 IcfgInterpreter]: Interpreting procedure select_one with input of size 463 for LOIs [2022-11-20 20:26:31,434 INFO L197 IcfgInterpreter]: Interpreting procedure setup_chuck__before__Keys with input of size 452 for LOIs [2022-11-20 20:26:34,216 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 441 for LOIs [2022-11-20 20:26:34,524 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailTo with input of size 249 for LOIs [2022-11-20 20:26:34,572 INFO L197 IcfgInterpreter]: Interpreting procedure setClientPrivateKey with input of size 445 for LOIs [2022-11-20 20:26:34,880 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing with input of size 283 for LOIs [2022-11-20 20:26:35,050 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing__before__Sign with input of size 271 for LOIs [2022-11-20 20:26:35,197 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing__before__AddressBook with input of size 269 for LOIs [2022-11-20 20:26:41,041 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing__before__Encrypt with input of size 454 for LOIs [2022-11-20 20:26:51,091 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailFrom with input of size 468 for LOIs [2022-11-20 20:26:57,226 INFO L197 IcfgInterpreter]: Interpreting procedure isEncrypted with input of size 254 for LOIs [2022-11-20 20:26:57,274 INFO L197 IcfgInterpreter]: Interpreting procedure findPublicKey with input of size 252 for LOIs [2022-11-20 20:26:57,352 INFO L197 IcfgInterpreter]: Interpreting procedure getEmailTo with input of size 444 for LOIs [2022-11-20 20:26:58,178 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-20 20:27:10,248 WARN L233 SmtUtils]: Spent 5.04s on a formula simplification. DAG size of input: 471 DAG size of output: 309 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 20:28:09,697 WARN L233 SmtUtils]: Spent 6.91s on a formula simplification. DAG size of input: 530 DAG size of output: 522 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 20:28:16,945 WARN L233 SmtUtils]: Spent 7.05s on a formula simplification. DAG size of input: 534 DAG size of output: 526 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 20:28:42,053 WARN L233 SmtUtils]: Spent 9.21s on a formula simplification. DAG size of input: 751 DAG size of output: 526 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 20:29:04,800 WARN L233 SmtUtils]: Spent 12.91s on a formula simplification. DAG size of input: 740 DAG size of output: 592 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 20:29:16,610 WARN L233 SmtUtils]: Spent 10.92s on a formula simplification. DAG size of input: 746 DAG size of output: 569 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 20:29:25,913 WARN L233 SmtUtils]: Spent 8.82s on a formula simplification. DAG size of input: 750 DAG size of output: 535 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate)