./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/email_spec1_product21.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version aef121e0 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce77febe-4827-4c18-a711-91e984c128e3/bin/utaipan-EQgc7hIp5V/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce77febe-4827-4c18-a711-91e984c128e3/bin/utaipan-EQgc7hIp5V/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce77febe-4827-4c18-a711-91e984c128e3/bin/utaipan-EQgc7hIp5V/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce77febe-4827-4c18-a711-91e984c128e3/bin/utaipan-EQgc7hIp5V/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/email_spec1_product21.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce77febe-4827-4c18-a711-91e984c128e3/bin/utaipan-EQgc7hIp5V/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce77febe-4827-4c18-a711-91e984c128e3/bin/utaipan-EQgc7hIp5V --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash cecb11257778d17777e5c48cccb3bea71da01aa9ce120079a5b602041abb00f4 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-aef121e [2021-11-23 02:28:11,476 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-23 02:28:11,480 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-23 02:28:11,543 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-23 02:28:11,543 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-23 02:28:11,545 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-23 02:28:11,547 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-23 02:28:11,549 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-23 02:28:11,552 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-23 02:28:11,553 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-23 02:28:11,554 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-23 02:28:11,556 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-23 02:28:11,556 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-23 02:28:11,558 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-23 02:28:11,560 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-23 02:28:11,561 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-23 02:28:11,563 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-23 02:28:11,564 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-23 02:28:11,567 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-23 02:28:11,570 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-23 02:28:11,573 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-23 02:28:11,575 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-23 02:28:11,577 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-23 02:28:11,578 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-23 02:28:11,583 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-23 02:28:11,584 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-23 02:28:11,584 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-23 02:28:11,586 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-23 02:28:11,587 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-23 02:28:11,588 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-23 02:28:11,589 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-23 02:28:11,590 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-23 02:28:11,591 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-23 02:28:11,593 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-23 02:28:11,594 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-23 02:28:11,595 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-23 02:28:11,596 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-23 02:28:11,596 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-23 02:28:11,597 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-23 02:28:11,598 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-23 02:28:11,600 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-23 02:28:11,602 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce77febe-4827-4c18-a711-91e984c128e3/bin/utaipan-EQgc7hIp5V/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-23 02:28:11,655 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-23 02:28:11,655 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-23 02:28:11,656 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-23 02:28:11,656 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-23 02:28:11,657 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-23 02:28:11,657 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-23 02:28:11,657 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-23 02:28:11,658 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-23 02:28:11,658 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-23 02:28:11,658 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-23 02:28:11,659 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-23 02:28:11,659 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-23 02:28:11,659 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-23 02:28:11,659 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-23 02:28:11,660 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-23 02:28:11,660 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-23 02:28:11,660 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-23 02:28:11,660 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-23 02:28:11,667 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-23 02:28:11,668 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-23 02:28:11,668 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-23 02:28:11,668 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-23 02:28:11,669 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-23 02:28:11,669 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-23 02:28:11,670 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-23 02:28:11,670 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-23 02:28:11,671 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-23 02:28:11,672 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-23 02:28:11,673 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-23 02:28:11,673 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-23 02:28:11,673 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-23 02:28:11,674 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-23 02:28:11,674 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 02:28:11,674 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-23 02:28:11,674 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-23 02:28:11,675 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-23 02:28:11,676 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-23 02:28:11,676 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-23 02:28:11,676 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-23 02:28:11,677 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-23 02:28:11,677 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-23 02:28:11,677 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce77febe-4827-4c18-a711-91e984c128e3/bin/utaipan-EQgc7hIp5V/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce77febe-4827-4c18-a711-91e984c128e3/bin/utaipan-EQgc7hIp5V Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> cecb11257778d17777e5c48cccb3bea71da01aa9ce120079a5b602041abb00f4 [2021-11-23 02:28:12,026 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-23 02:28:12,054 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-23 02:28:12,057 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-23 02:28:12,059 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-23 02:28:12,060 INFO L275 PluginConnector]: CDTParser initialized [2021-11-23 02:28:12,061 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce77febe-4827-4c18-a711-91e984c128e3/bin/utaipan-EQgc7hIp5V/../../sv-benchmarks/c/product-lines/email_spec1_product21.cil.c [2021-11-23 02:28:12,146 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce77febe-4827-4c18-a711-91e984c128e3/bin/utaipan-EQgc7hIp5V/data/9cdf41212/f906ac260f33401885542f360fff0dec/FLAGc3e7dcf97 [2021-11-23 02:28:12,797 INFO L306 CDTParser]: Found 1 translation units. [2021-11-23 02:28:12,798 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce77febe-4827-4c18-a711-91e984c128e3/sv-benchmarks/c/product-lines/email_spec1_product21.cil.c [2021-11-23 02:28:12,825 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce77febe-4827-4c18-a711-91e984c128e3/bin/utaipan-EQgc7hIp5V/data/9cdf41212/f906ac260f33401885542f360fff0dec/FLAGc3e7dcf97 [2021-11-23 02:28:13,014 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce77febe-4827-4c18-a711-91e984c128e3/bin/utaipan-EQgc7hIp5V/data/9cdf41212/f906ac260f33401885542f360fff0dec [2021-11-23 02:28:13,019 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-23 02:28:13,022 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-23 02:28:13,026 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-23 02:28:13,027 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-23 02:28:13,031 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-23 02:28:13,032 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 02:28:13" (1/1) ... [2021-11-23 02:28:13,035 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@51ed7d46 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:28:13, skipping insertion in model container [2021-11-23 02:28:13,035 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 02:28:13" (1/1) ... [2021-11-23 02:28:13,043 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-23 02:28:13,144 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-23 02:28:13,878 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce77febe-4827-4c18-a711-91e984c128e3/sv-benchmarks/c/product-lines/email_spec1_product21.cil.c[63391,63404] [2021-11-23 02:28:13,881 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 02:28:13,893 INFO L203 MainTranslator]: Completed pre-run [2021-11-23 02:28:14,036 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce77febe-4827-4c18-a711-91e984c128e3/sv-benchmarks/c/product-lines/email_spec1_product21.cil.c[63391,63404] [2021-11-23 02:28:14,037 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 02:28:14,077 INFO L208 MainTranslator]: Completed translation [2021-11-23 02:28:14,077 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:28:14 WrapperNode [2021-11-23 02:28:14,078 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-23 02:28:14,079 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-23 02:28:14,079 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-23 02:28:14,079 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-23 02:28:14,088 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:28:14" (1/1) ... [2021-11-23 02:28:14,141 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:28:14" (1/1) ... [2021-11-23 02:28:14,233 INFO L137 Inliner]: procedures = 128, calls = 215, calls flagged for inlining = 57, calls inlined = 54, statements flattened = 1058 [2021-11-23 02:28:14,234 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-23 02:28:14,235 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-23 02:28:14,235 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-23 02:28:14,235 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-23 02:28:14,247 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:28:14" (1/1) ... [2021-11-23 02:28:14,248 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:28:14" (1/1) ... [2021-11-23 02:28:14,257 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:28:14" (1/1) ... [2021-11-23 02:28:14,258 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:28:14" (1/1) ... [2021-11-23 02:28:14,285 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:28:14" (1/1) ... [2021-11-23 02:28:14,299 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:28:14" (1/1) ... [2021-11-23 02:28:14,305 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:28:14" (1/1) ... [2021-11-23 02:28:14,316 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-23 02:28:14,318 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-23 02:28:14,329 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-23 02:28:14,329 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-23 02:28:14,330 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:28:14" (1/1) ... [2021-11-23 02:28:14,353 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 02:28:14,383 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce77febe-4827-4c18-a711-91e984c128e3/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 02:28:14,397 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce77febe-4827-4c18-a711-91e984c128e3/bin/utaipan-EQgc7hIp5V/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-23 02:28:14,410 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce77febe-4827-4c18-a711-91e984c128e3/bin/utaipan-EQgc7hIp5V/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-23 02:28:14,464 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookSize [2021-11-23 02:28:14,465 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookSize [2021-11-23 02:28:14,465 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailEncryptionKey [2021-11-23 02:28:14,465 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailEncryptionKey [2021-11-23 02:28:14,466 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookAddress [2021-11-23 02:28:14,466 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookAddress [2021-11-23 02:28:14,466 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailEncryptionKey [2021-11-23 02:28:14,466 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailEncryptionKey [2021-11-23 02:28:14,467 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2021-11-23 02:28:14,467 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2021-11-23 02:28:14,467 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2021-11-23 02:28:14,467 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2021-11-23 02:28:14,468 INFO L130 BoogieDeclarations]: Found specification of procedure createClientKeyringEntry [2021-11-23 02:28:14,468 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientKeyringEntry [2021-11-23 02:28:14,468 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsEncrypted [2021-11-23 02:28:14,468 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsEncrypted [2021-11-23 02:28:14,469 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAdd [2021-11-23 02:28:14,469 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAdd [2021-11-23 02:28:14,469 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2021-11-23 02:28:14,469 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2021-11-23 02:28:14,470 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2021-11-23 02:28:14,470 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-23 02:28:14,470 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookSize [2021-11-23 02:28:14,470 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookSize [2021-11-23 02:28:14,471 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringUser [2021-11-23 02:28:14,471 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringUser [2021-11-23 02:28:14,471 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringPublicKey [2021-11-23 02:28:14,472 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringPublicKey [2021-11-23 02:28:14,472 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2021-11-23 02:28:14,472 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2021-11-23 02:28:14,472 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing__wrappee__Encrypt [2021-11-23 02:28:14,474 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing__wrappee__Encrypt [2021-11-23 02:28:14,475 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2021-11-23 02:28:14,475 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2021-11-23 02:28:14,475 INFO L130 BoogieDeclarations]: Found specification of procedure isEncrypted [2021-11-23 02:28:14,476 INFO L138 BoogieDeclarations]: Found implementation of procedure isEncrypted [2021-11-23 02:28:14,476 INFO L130 BoogieDeclarations]: Found specification of procedure setClientPrivateKey [2021-11-23 02:28:14,476 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientPrivateKey [2021-11-23 02:28:14,477 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailTo [2021-11-23 02:28:14,477 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailTo [2021-11-23 02:28:14,477 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-23 02:28:14,477 INFO L130 BoogieDeclarations]: Found specification of procedure generateKeyPair [2021-11-23 02:28:14,477 INFO L138 BoogieDeclarations]: Found implementation of procedure generateKeyPair [2021-11-23 02:28:14,478 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookAddress [2021-11-23 02:28:14,478 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookAddress [2021-11-23 02:28:14,479 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-23 02:28:14,480 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-23 02:28:14,832 INFO L236 CfgBuilder]: Building ICFG [2021-11-23 02:28:14,847 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-23 02:28:15,843 INFO L277 CfgBuilder]: Performing block encoding [2021-11-23 02:28:16,355 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-23 02:28:16,356 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-11-23 02:28:16,359 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:28:16 BoogieIcfgContainer [2021-11-23 02:28:16,360 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-23 02:28:16,362 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-23 02:28:16,362 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-23 02:28:16,365 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-23 02:28:16,366 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 02:28:13" (1/3) ... [2021-11-23 02:28:16,367 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@47185a43 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 02:28:16, skipping insertion in model container [2021-11-23 02:28:16,367 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:28:14" (2/3) ... [2021-11-23 02:28:16,368 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@47185a43 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 02:28:16, skipping insertion in model container [2021-11-23 02:28:16,368 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:28:16" (3/3) ... [2021-11-23 02:28:16,369 INFO L111 eAbstractionObserver]: Analyzing ICFG email_spec1_product21.cil.c [2021-11-23 02:28:16,375 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-23 02:28:16,376 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-23 02:28:16,452 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-23 02:28:16,459 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-23 02:28:16,459 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-23 02:28:16,490 INFO L276 IsEmpty]: Start isEmpty. Operand has 185 states, 105 states have (on average 1.3333333333333333) internal successors, (140), 110 states have internal predecessors, (140), 57 states have call successors, (57), 21 states have call predecessors, (57), 21 states have return successors, (57), 56 states have call predecessors, (57), 57 states have call successors, (57) [2021-11-23 02:28:16,503 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2021-11-23 02:28:16,503 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:28:16,504 INFO L514 BasicCegarLoop]: trace histogram [3, 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] [2021-11-23 02:28:16,505 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting outgoing__wrappee__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 02:28:16,511 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:28:16,511 INFO L85 PathProgramCache]: Analyzing trace with hash -537506984, now seen corresponding path program 1 times [2021-11-23 02:28:16,522 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:28:16,523 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [336157125] [2021-11-23 02:28:16,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:28:16,524 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:28:16,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:28:16,934 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-11-23 02:28:16,935 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:28:16,936 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [336157125] [2021-11-23 02:28:16,937 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [336157125] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:28:16,937 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:28:16,937 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-23 02:28:16,940 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [70295822] [2021-11-23 02:28:16,941 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:28:16,948 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-23 02:28:16,948 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:28:16,994 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-23 02:28:16,996 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-23 02:28:17,001 INFO L87 Difference]: Start difference. First operand has 185 states, 105 states have (on average 1.3333333333333333) internal successors, (140), 110 states have internal predecessors, (140), 57 states have call successors, (57), 21 states have call predecessors, (57), 21 states have return successors, (57), 56 states have call predecessors, (57), 57 states have call successors, (57) Second operand has 2 states, 2 states have (on average 15.5) internal successors, (31), 2 states have internal predecessors, (31), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2021-11-23 02:28:17,250 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:28:17,251 INFO L93 Difference]: Finished difference Result 278 states and 379 transitions. [2021-11-23 02:28:17,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-23 02:28:17,256 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 15.5) internal successors, (31), 2 states have internal predecessors, (31), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 63 [2021-11-23 02:28:17,257 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:28:17,290 INFO L225 Difference]: With dead ends: 278 [2021-11-23 02:28:17,290 INFO L226 Difference]: Without dead ends: 182 [2021-11-23 02:28:17,302 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-23 02:28:17,307 INFO L933 BasicCegarLoop]: 215 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 215 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 02:28:17,308 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 215 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 02:28:17,330 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182 states. [2021-11-23 02:28:17,403 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182 to 182. [2021-11-23 02:28:17,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 182 states, 103 states have (on average 1.3009708737864079) internal successors, (134), 107 states have internal predecessors, (134), 57 states have call successors, (57), 21 states have call predecessors, (57), 21 states have return successors, (56), 55 states have call predecessors, (56), 56 states have call successors, (56) [2021-11-23 02:28:17,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 182 states to 182 states and 247 transitions. [2021-11-23 02:28:17,416 INFO L78 Accepts]: Start accepts. Automaton has 182 states and 247 transitions. Word has length 63 [2021-11-23 02:28:17,419 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:28:17,422 INFO L470 AbstractCegarLoop]: Abstraction has 182 states and 247 transitions. [2021-11-23 02:28:17,423 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 15.5) internal successors, (31), 2 states have internal predecessors, (31), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2021-11-23 02:28:17,423 INFO L276 IsEmpty]: Start isEmpty. Operand 182 states and 247 transitions. [2021-11-23 02:28:17,439 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2021-11-23 02:28:17,440 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:28:17,441 INFO L514 BasicCegarLoop]: trace histogram [3, 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] [2021-11-23 02:28:17,441 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-23 02:28:17,442 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting outgoing__wrappee__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 02:28:17,446 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:28:17,447 INFO L85 PathProgramCache]: Analyzing trace with hash 1255439372, now seen corresponding path program 1 times [2021-11-23 02:28:17,447 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:28:17,448 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1912871918] [2021-11-23 02:28:17,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:28:17,448 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:28:17,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:28:17,697 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-11-23 02:28:17,698 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:28:17,698 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1912871918] [2021-11-23 02:28:17,699 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1912871918] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:28:17,699 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:28:17,700 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 02:28:17,700 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [483275121] [2021-11-23 02:28:17,700 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:28:17,702 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 02:28:17,702 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:28:17,703 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 02:28:17,703 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 02:28:17,704 INFO L87 Difference]: Start difference. First operand 182 states and 247 transitions. Second operand has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2021-11-23 02:28:17,908 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:28:17,908 INFO L93 Difference]: Finished difference Result 274 states and 364 transitions. [2021-11-23 02:28:17,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 02:28:17,910 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 64 [2021-11-23 02:28:17,910 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:28:17,921 INFO L225 Difference]: With dead ends: 274 [2021-11-23 02:28:17,921 INFO L226 Difference]: Without dead ends: 184 [2021-11-23 02:28:17,928 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 02:28:17,931 INFO L933 BasicCegarLoop]: 212 mSDtfsCounter, 0 mSDsluCounter, 244 mSDsCounter, 0 mSdLazyCounter, 70 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 423 SdHoareTripleChecker+Invalid, 70 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 70 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 02:28:17,932 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 423 Invalid, 70 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 70 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 02:28:17,936 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 184 states. [2021-11-23 02:28:17,969 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 184 to 184. [2021-11-23 02:28:17,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 184 states, 105 states have (on average 1.2952380952380953) internal successors, (136), 109 states have internal predecessors, (136), 57 states have call successors, (57), 21 states have call predecessors, (57), 21 states have return successors, (56), 55 states have call predecessors, (56), 56 states have call successors, (56) [2021-11-23 02:28:17,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 184 states to 184 states and 249 transitions. [2021-11-23 02:28:17,976 INFO L78 Accepts]: Start accepts. Automaton has 184 states and 249 transitions. Word has length 64 [2021-11-23 02:28:17,976 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:28:17,978 INFO L470 AbstractCegarLoop]: Abstraction has 184 states and 249 transitions. [2021-11-23 02:28:17,978 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2021-11-23 02:28:17,978 INFO L276 IsEmpty]: Start isEmpty. Operand 184 states and 249 transitions. [2021-11-23 02:28:17,982 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2021-11-23 02:28:17,982 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:28:17,983 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:28:17,984 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-23 02:28:17,984 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting outgoing__wrappee__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 02:28:17,985 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:28:17,986 INFO L85 PathProgramCache]: Analyzing trace with hash 440481792, now seen corresponding path program 1 times [2021-11-23 02:28:17,986 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:28:17,986 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1608860831] [2021-11-23 02:28:17,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:28:17,987 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:28:18,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:28:18,160 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-11-23 02:28:18,160 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:28:18,160 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1608860831] [2021-11-23 02:28:18,161 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1608860831] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:28:18,162 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:28:18,162 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 02:28:18,162 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1879423914] [2021-11-23 02:28:18,162 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:28:18,163 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 02:28:18,164 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:28:18,165 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 02:28:18,166 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 02:28:18,166 INFO L87 Difference]: Start difference. First operand 184 states and 249 transitions. Second operand has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2021-11-23 02:28:18,355 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:28:18,357 INFO L93 Difference]: Finished difference Result 403 states and 565 transitions. [2021-11-23 02:28:18,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 02:28:18,358 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 69 [2021-11-23 02:28:18,359 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:28:18,392 INFO L225 Difference]: With dead ends: 403 [2021-11-23 02:28:18,392 INFO L226 Difference]: Without dead ends: 237 [2021-11-23 02:28:18,393 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 02:28:18,395 INFO L933 BasicCegarLoop]: 230 mSDtfsCounter, 59 mSDsluCounter, 238 mSDsCounter, 0 mSdLazyCounter, 71 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 77 SdHoareTripleChecker+Valid, 435 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 71 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 02:28:18,396 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [77 Valid, 435 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 71 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 02:28:18,397 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 237 states. [2021-11-23 02:28:18,431 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 237 to 232. [2021-11-23 02:28:18,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 232 states, 139 states have (on average 1.3741007194244603) internal successors, (191), 143 states have internal predecessors, (191), 71 states have call successors, (71), 21 states have call predecessors, (71), 21 states have return successors, (70), 69 states have call predecessors, (70), 70 states have call successors, (70) [2021-11-23 02:28:18,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 232 states to 232 states and 332 transitions. [2021-11-23 02:28:18,436 INFO L78 Accepts]: Start accepts. Automaton has 232 states and 332 transitions. Word has length 69 [2021-11-23 02:28:18,438 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:28:18,438 INFO L470 AbstractCegarLoop]: Abstraction has 232 states and 332 transitions. [2021-11-23 02:28:18,439 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2021-11-23 02:28:18,439 INFO L276 IsEmpty]: Start isEmpty. Operand 232 states and 332 transitions. [2021-11-23 02:28:18,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2021-11-23 02:28:18,443 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:28:18,443 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:28:18,443 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-23 02:28:18,444 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting outgoing__wrappee__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 02:28:18,444 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:28:18,444 INFO L85 PathProgramCache]: Analyzing trace with hash 126329818, now seen corresponding path program 1 times [2021-11-23 02:28:18,445 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:28:18,445 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [876190973] [2021-11-23 02:28:18,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:28:18,445 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:28:18,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:28:18,589 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-11-23 02:28:18,589 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:28:18,590 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [876190973] [2021-11-23 02:28:18,590 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [876190973] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-23 02:28:18,590 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1334548185] [2021-11-23 02:28:18,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:28:18,591 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 02:28:18,591 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce77febe-4827-4c18-a711-91e984c128e3/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 02:28:18,594 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce77febe-4827-4c18-a711-91e984c128e3/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 02:28:18,621 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce77febe-4827-4c18-a711-91e984c128e3/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-23 02:28:18,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:28:18,918 INFO L263 TraceCheckSpWp]: Trace formula consists of 988 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-23 02:28:18,927 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 02:28:19,160 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-11-23 02:28:19,161 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 02:28:19,365 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-11-23 02:28:19,366 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1334548185] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 02:28:19,366 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [259584426] [2021-11-23 02:28:19,394 INFO L159 IcfgInterpreter]: Started Sifa with 59 locations of interest [2021-11-23 02:28:19,394 INFO L166 IcfgInterpreter]: Building call graph [2021-11-23 02:28:19,400 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-23 02:28:19,408 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-23 02:28:19,409 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-23 02:28:43,568 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 443 for LOIs [2021-11-23 02:28:43,870 INFO L197 IcfgInterpreter]: Interpreting procedure setClientPrivateKey with input of size 445 for LOIs [2021-11-23 02:28:44,132 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-23 02:29:33,903 WARN L227 SmtUtils]: Spent 10.57s on a formula simplification. DAG size of input: 577 DAG size of output: 334 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 02:29:44,160 WARN L227 SmtUtils]: Spent 5.03s on a formula simplification. DAG size of input: 549 DAG size of output: 362 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 02:29:44,302 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSifa [259584426] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:29:44,303 INFO L186 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2021-11-23 02:29:44,303 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [4, 4, 4] total 26 [2021-11-23 02:29:44,304 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1395455798] [2021-11-23 02:29:44,304 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:29:44,304 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-11-23 02:29:44,305 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:29:44,305 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-11-23 02:29:44,306 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=568, Unknown=0, NotChecked=0, Total=650 [2021-11-23 02:29:44,306 INFO L87 Difference]: Start difference. First operand 232 states and 332 transitions. Second operand has 21 states, 16 states have (on average 2.3125) internal successors, (37), 15 states have internal predecessors, (37), 7 states have call successors, (15), 3 states have call predecessors, (15), 3 states have return successors, (12), 7 states have call predecessors, (12), 7 states have call successors, (12) [2021-11-23 02:29:55,326 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:29:55,327 INFO L93 Difference]: Finished difference Result 512 states and 765 transitions. [2021-11-23 02:29:55,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-11-23 02:29:55,328 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 16 states have (on average 2.3125) internal successors, (37), 15 states have internal predecessors, (37), 7 states have call successors, (15), 3 states have call predecessors, (15), 3 states have return successors, (12), 7 states have call predecessors, (12), 7 states have call successors, (12) Word has length 70 [2021-11-23 02:29:55,328 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:29:55,336 INFO L225 Difference]: With dead ends: 512 [2021-11-23 02:29:55,337 INFO L226 Difference]: Without dead ends: 298 [2021-11-23 02:29:55,339 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 214 GetRequests, 186 SyntacticMatches, 2 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 170 ImplicationChecksByTransitivity, 64.6s TimeCoverageRelationStatistics Valid=100, Invalid=656, Unknown=0, NotChecked=0, Total=756 [2021-11-23 02:29:55,343 INFO L933 BasicCegarLoop]: 238 mSDtfsCounter, 125 mSDsluCounter, 2911 mSDsCounter, 0 mSdLazyCounter, 1902 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 125 SdHoareTripleChecker+Valid, 3054 SdHoareTripleChecker+Invalid, 1918 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 1902 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.3s IncrementalHoareTripleChecker+Time [2021-11-23 02:29:55,347 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [125 Valid, 3054 Invalid, 1918 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [16 Valid, 1902 Invalid, 0 Unknown, 0 Unchecked, 6.3s Time] [2021-11-23 02:29:55,351 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 298 states. [2021-11-23 02:29:55,448 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 298 to 255. [2021-11-23 02:29:55,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 255 states, 161 states have (on average 1.391304347826087) internal successors, (224), 165 states have internal predecessors, (224), 71 states have call successors, (71), 22 states have call predecessors, (71), 22 states have return successors, (70), 69 states have call predecessors, (70), 70 states have call successors, (70) [2021-11-23 02:29:55,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 255 states to 255 states and 365 transitions. [2021-11-23 02:29:55,452 INFO L78 Accepts]: Start accepts. Automaton has 255 states and 365 transitions. Word has length 70 [2021-11-23 02:29:55,453 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:29:55,453 INFO L470 AbstractCegarLoop]: Abstraction has 255 states and 365 transitions. [2021-11-23 02:29:55,454 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 16 states have (on average 2.3125) internal successors, (37), 15 states have internal predecessors, (37), 7 states have call successors, (15), 3 states have call predecessors, (15), 3 states have return successors, (12), 7 states have call predecessors, (12), 7 states have call successors, (12) [2021-11-23 02:29:55,454 INFO L276 IsEmpty]: Start isEmpty. Operand 255 states and 365 transitions. [2021-11-23 02:29:55,456 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2021-11-23 02:29:55,456 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:29:55,456 INFO L514 BasicCegarLoop]: trace histogram [4, 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] [2021-11-23 02:29:55,498 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce77febe-4827-4c18-a711-91e984c128e3/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-23 02:29:55,678 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce77febe-4827-4c18-a711-91e984c128e3/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 02:29:55,678 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting outgoing__wrappee__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 02:29:55,678 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:29:55,679 INFO L85 PathProgramCache]: Analyzing trace with hash -1187116606, now seen corresponding path program 1 times [2021-11-23 02:29:55,679 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:29:55,679 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [468540580] [2021-11-23 02:29:55,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:29:55,679 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:29:55,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:29:55,770 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2021-11-23 02:29:55,770 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:29:55,770 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [468540580] [2021-11-23 02:29:55,771 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [468540580] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:29:55,771 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:29:55,771 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 02:29:55,771 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [529030320] [2021-11-23 02:29:55,771 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:29:55,772 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 02:29:55,772 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:29:55,773 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 02:29:55,773 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 02:29:55,774 INFO L87 Difference]: Start difference. First operand 255 states and 365 transitions. Second operand has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 2 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2021-11-23 02:29:56,007 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:29:56,008 INFO L93 Difference]: Finished difference Result 613 states and 910 transitions. [2021-11-23 02:29:56,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 02:29:56,008 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 2 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 75 [2021-11-23 02:29:56,008 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:29:56,014 INFO L225 Difference]: With dead ends: 613 [2021-11-23 02:29:56,014 INFO L226 Difference]: Without dead ends: 382 [2021-11-23 02:29:56,015 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 02:29:56,016 INFO L933 BasicCegarLoop]: 233 mSDtfsCounter, 57 mSDsluCounter, 244 mSDsCounter, 0 mSdLazyCounter, 72 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 75 SdHoareTripleChecker+Valid, 443 SdHoareTripleChecker+Invalid, 73 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 72 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 02:29:56,016 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [75 Valid, 443 Invalid, 73 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 72 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 02:29:56,018 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 382 states. [2021-11-23 02:29:56,137 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 382 to 377. [2021-11-23 02:29:56,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 377 states, 252 states have (on average 1.4444444444444444) internal successors, (364), 256 states have internal predecessors, (364), 102 states have call successors, (102), 22 states have call predecessors, (102), 22 states have return successors, (101), 100 states have call predecessors, (101), 101 states have call successors, (101) [2021-11-23 02:29:56,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 377 states to 377 states and 567 transitions. [2021-11-23 02:29:56,143 INFO L78 Accepts]: Start accepts. Automaton has 377 states and 567 transitions. Word has length 75 [2021-11-23 02:29:56,144 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:29:56,144 INFO L470 AbstractCegarLoop]: Abstraction has 377 states and 567 transitions. [2021-11-23 02:29:56,144 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 2 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2021-11-23 02:29:56,145 INFO L276 IsEmpty]: Start isEmpty. Operand 377 states and 567 transitions. [2021-11-23 02:29:56,149 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2021-11-23 02:29:56,150 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:29:56,150 INFO L514 BasicCegarLoop]: trace histogram [4, 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] [2021-11-23 02:29:56,150 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-23 02:29:56,150 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting outgoing__wrappee__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 02:29:56,151 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:29:56,151 INFO L85 PathProgramCache]: Analyzing trace with hash -1472492641, now seen corresponding path program 1 times [2021-11-23 02:29:56,151 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:29:56,151 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2024491643] [2021-11-23 02:29:56,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:29:56,152 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:29:56,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:29:56,262 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2021-11-23 02:29:56,262 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:29:56,262 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2024491643] [2021-11-23 02:29:56,263 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2024491643] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-23 02:29:56,263 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1817309187] [2021-11-23 02:29:56,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:29:56,263 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 02:29:56,263 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce77febe-4827-4c18-a711-91e984c128e3/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 02:29:56,265 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce77febe-4827-4c18-a711-91e984c128e3/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 02:29:56,273 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce77febe-4827-4c18-a711-91e984c128e3/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-23 02:29:56,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:29:56,593 INFO L263 TraceCheckSpWp]: Trace formula consists of 1018 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-23 02:29:56,600 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 02:29:56,736 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2021-11-23 02:29:56,737 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 02:29:56,926 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2021-11-23 02:29:56,926 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1817309187] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 02:29:56,927 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1616391557] [2021-11-23 02:29:56,934 INFO L159 IcfgInterpreter]: Started Sifa with 63 locations of interest [2021-11-23 02:29:56,934 INFO L166 IcfgInterpreter]: Building call graph [2021-11-23 02:29:56,936 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-23 02:29:56,936 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-23 02:29:56,936 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-23 02:30:29,774 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 443 for LOIs [2021-11-23 02:30:30,039 INFO L197 IcfgInterpreter]: Interpreting procedure setClientPrivateKey with input of size 446 for LOIs [2021-11-23 02:30:30,320 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-23 02:31:21,917 WARN L227 SmtUtils]: Spent 10.82s on a formula simplification. DAG size of input: 583 DAG size of output: 346 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 02:31:47,047 WARN L227 SmtUtils]: Spent 5.88s on a formula simplification. DAG size of input: 568 DAG size of output: 359 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 02:31:53,247 WARN L227 SmtUtils]: Spent 5.91s on a formula simplification. DAG size of input: 570 DAG size of output: 361 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 02:31:59,320 WARN L227 SmtUtils]: Spent 5.40s on a formula simplification. DAG size of input: 584 DAG size of output: 332 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 02:31:59,468 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSifa [1616391557] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:31:59,468 INFO L186 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2021-11-23 02:31:59,468 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [24] imperfect sequences [4, 4, 4] total 30 [2021-11-23 02:31:59,468 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1458548469] [2021-11-23 02:31:59,468 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:31:59,469 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2021-11-23 02:31:59,469 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:31:59,470 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-11-23 02:31:59,471 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=110, Invalid=760, Unknown=0, NotChecked=0, Total=870 [2021-11-23 02:31:59,472 INFO L87 Difference]: Start difference. First operand 377 states and 567 transitions. Second operand has 25 states, 19 states have (on average 2.1052631578947367) internal successors, (40), 18 states have internal predecessors, (40), 8 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (13), 8 states have call predecessors, (13), 8 states have call successors, (13) [2021-11-23 02:32:32,096 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:32:32,096 INFO L93 Difference]: Finished difference Result 809 states and 1259 transitions. [2021-11-23 02:32:32,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2021-11-23 02:32:32,097 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 19 states have (on average 2.1052631578947367) internal successors, (40), 18 states have internal predecessors, (40), 8 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (13), 8 states have call predecessors, (13), 8 states have call successors, (13) Word has length 76 [2021-11-23 02:32:32,098 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:32:32,102 INFO L225 Difference]: With dead ends: 809 [2021-11-23 02:32:32,103 INFO L226 Difference]: Without dead ends: 495 [2021-11-23 02:32:32,107 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 240 GetRequests, 200 SyntacticMatches, 2 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 291 ImplicationChecksByTransitivity, 114.0s TimeCoverageRelationStatistics Valid=208, Invalid=1352, Unknown=0, NotChecked=0, Total=1560 [2021-11-23 02:32:32,108 INFO L933 BasicCegarLoop]: 227 mSDtfsCounter, 189 mSDsluCounter, 3126 mSDsCounter, 0 mSdLazyCounter, 2383 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 194 SdHoareTripleChecker+Valid, 3243 SdHoareTripleChecker+Invalid, 2406 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 2383 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.5s IncrementalHoareTripleChecker+Time [2021-11-23 02:32:32,109 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [194 Valid, 3243 Invalid, 2406 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [23 Valid, 2383 Invalid, 0 Unknown, 0 Unchecked, 7.5s Time] [2021-11-23 02:32:32,110 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 495 states. [2021-11-23 02:32:32,231 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 495 to 393. [2021-11-23 02:32:32,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 393 states, 264 states have (on average 1.4431818181818181) internal successors, (381), 270 states have internal predecessors, (381), 105 states have call successors, (105), 23 states have call predecessors, (105), 23 states have return successors, (104), 101 states have call predecessors, (104), 104 states have call successors, (104) [2021-11-23 02:32:32,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 393 states to 393 states and 590 transitions. [2021-11-23 02:32:32,237 INFO L78 Accepts]: Start accepts. Automaton has 393 states and 590 transitions. Word has length 76 [2021-11-23 02:32:32,237 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:32:32,237 INFO L470 AbstractCegarLoop]: Abstraction has 393 states and 590 transitions. [2021-11-23 02:32:32,238 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 19 states have (on average 2.1052631578947367) internal successors, (40), 18 states have internal predecessors, (40), 8 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (13), 8 states have call predecessors, (13), 8 states have call successors, (13) [2021-11-23 02:32:32,238 INFO L276 IsEmpty]: Start isEmpty. Operand 393 states and 590 transitions. [2021-11-23 02:32:32,240 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2021-11-23 02:32:32,240 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:32:32,240 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:32:32,267 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce77febe-4827-4c18-a711-91e984c128e3/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-23 02:32:32,448 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce77febe-4827-4c18-a711-91e984c128e3/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 02:32:32,449 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting outgoing__wrappee__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 02:32:32,449 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:32:32,449 INFO L85 PathProgramCache]: Analyzing trace with hash 1310814523, now seen corresponding path program 1 times [2021-11-23 02:32:32,449 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:32:32,449 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [279481007] [2021-11-23 02:32:32,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:32:32,450 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:32:32,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:32:32,584 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-11-23 02:32:32,584 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:32:32,585 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [279481007] [2021-11-23 02:32:32,585 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [279481007] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-23 02:32:32,585 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [608493843] [2021-11-23 02:32:32,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:32:32,586 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 02:32:32,586 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce77febe-4827-4c18-a711-91e984c128e3/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 02:32:32,587 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce77febe-4827-4c18-a711-91e984c128e3/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 02:32:32,605 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce77febe-4827-4c18-a711-91e984c128e3/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-23 02:32:32,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:32:32,926 INFO L263 TraceCheckSpWp]: Trace formula consists of 1124 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-23 02:32:32,932 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 02:32:33,108 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-11-23 02:32:33,109 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 02:32:33,333 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-11-23 02:32:33,333 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [608493843] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 02:32:33,334 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1809662043] [2021-11-23 02:32:33,342 INFO L159 IcfgInterpreter]: Started Sifa with 68 locations of interest [2021-11-23 02:32:33,342 INFO L166 IcfgInterpreter]: Building call graph [2021-11-23 02:32:33,343 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-23 02:32:33,343 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-23 02:32:33,343 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-23 02:33:46,790 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 443 for LOIs [2021-11-23 02:33:47,181 INFO L197 IcfgInterpreter]: Interpreting procedure setClientKeyringPublicKey with input of size 234 for LOIs [2021-11-23 02:33:47,260 INFO L197 IcfgInterpreter]: Interpreting procedure setClientKeyringUser with input of size 235 for LOIs [2021-11-23 02:33:47,337 INFO L197 IcfgInterpreter]: Interpreting procedure createClientKeyringEntry with input of size 281 for LOIs [2021-11-23 02:33:47,482 INFO L197 IcfgInterpreter]: Interpreting procedure setClientPrivateKey with input of size 445 for LOIs [2021-11-23 02:33:47,779 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-23 02:34:39,949 WARN L227 SmtUtils]: Spent 6.39s on a formula simplification. DAG size of input: 581 DAG size of output: 303 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 02:34:48,219 WARN L227 SmtUtils]: Spent 6.62s on a formula simplification. DAG size of input: 583 DAG size of output: 305 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 02:35:02,111 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSifa [1809662043] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:35:02,111 INFO L186 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2021-11-23 02:35:02,111 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [28] imperfect sequences [4, 4, 4] total 34 [2021-11-23 02:35:02,112 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [140778854] [2021-11-23 02:35:02,112 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:35:02,113 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2021-11-23 02:35:02,113 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:35:02,113 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2021-11-23 02:35:02,114 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=104, Invalid=1018, Unknown=0, NotChecked=0, Total=1122 [2021-11-23 02:35:02,114 INFO L87 Difference]: Start difference. First operand 393 states and 590 transitions. Second operand has 29 states, 19 states have (on average 2.1052631578947367) internal successors, (40), 17 states have internal predecessors, (40), 10 states have call successors, (18), 6 states have call predecessors, (18), 6 states have return successors, (15), 10 states have call predecessors, (15), 10 states have call successors, (15) [2021-11-23 02:35:29,806 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:35:29,806 INFO L93 Difference]: Finished difference Result 844 states and 1310 transitions. [2021-11-23 02:35:29,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2021-11-23 02:35:29,807 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 19 states have (on average 2.1052631578947367) internal successors, (40), 17 states have internal predecessors, (40), 10 states have call successors, (18), 6 states have call predecessors, (18), 6 states have return successors, (15), 10 states have call predecessors, (15), 10 states have call successors, (15) Word has length 79 [2021-11-23 02:35:29,807 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:35:29,812 INFO L225 Difference]: With dead ends: 844 [2021-11-23 02:35:29,812 INFO L226 Difference]: Without dead ends: 530 [2021-11-23 02:35:29,814 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 247 GetRequests, 207 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 307 ImplicationChecksByTransitivity, 91.7s TimeCoverageRelationStatistics Valid=172, Invalid=1550, Unknown=0, NotChecked=0, Total=1722 [2021-11-23 02:35:29,815 INFO L933 BasicCegarLoop]: 229 mSDtfsCounter, 168 mSDsluCounter, 3451 mSDsCounter, 0 mSdLazyCounter, 3302 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 168 SdHoareTripleChecker+Valid, 3576 SdHoareTripleChecker+Invalid, 3325 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 3302 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.9s IncrementalHoareTripleChecker+Time [2021-11-23 02:35:29,815 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [168 Valid, 3576 Invalid, 3325 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [23 Valid, 3302 Invalid, 0 Unknown, 0 Unchecked, 9.9s Time] [2021-11-23 02:35:29,817 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 530 states. [2021-11-23 02:35:29,979 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 530 to 432. [2021-11-23 02:35:29,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 432 states, 296 states have (on average 1.4391891891891893) internal successors, (426), 303 states have internal predecessors, (426), 109 states have call successors, (109), 26 states have call predecessors, (109), 26 states have return successors, (108), 104 states have call predecessors, (108), 108 states have call successors, (108) [2021-11-23 02:35:29,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 432 states to 432 states and 643 transitions. [2021-11-23 02:35:29,985 INFO L78 Accepts]: Start accepts. Automaton has 432 states and 643 transitions. Word has length 79 [2021-11-23 02:35:29,985 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:35:29,985 INFO L470 AbstractCegarLoop]: Abstraction has 432 states and 643 transitions. [2021-11-23 02:35:29,986 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 19 states have (on average 2.1052631578947367) internal successors, (40), 17 states have internal predecessors, (40), 10 states have call successors, (18), 6 states have call predecessors, (18), 6 states have return successors, (15), 10 states have call predecessors, (15), 10 states have call successors, (15) [2021-11-23 02:35:29,986 INFO L276 IsEmpty]: Start isEmpty. Operand 432 states and 643 transitions. [2021-11-23 02:35:29,988 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2021-11-23 02:35:29,988 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:35:29,988 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:35:30,022 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce77febe-4827-4c18-a711-91e984c128e3/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-11-23 02:35:30,201 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce77febe-4827-4c18-a711-91e984c128e3/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2021-11-23 02:35:30,201 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting outgoing__wrappee__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 02:35:30,202 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:35:30,202 INFO L85 PathProgramCache]: Analyzing trace with hash -17817753, now seen corresponding path program 1 times [2021-11-23 02:35:30,202 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:35:30,202 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [924752229] [2021-11-23 02:35:30,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:35:30,202 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:35:30,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:35:30,301 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-11-23 02:35:30,301 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:35:30,301 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [924752229] [2021-11-23 02:35:30,302 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [924752229] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-23 02:35:30,302 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [78592462] [2021-11-23 02:35:30,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:35:30,302 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 02:35:30,302 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce77febe-4827-4c18-a711-91e984c128e3/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 02:35:30,303 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce77febe-4827-4c18-a711-91e984c128e3/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 02:35:30,308 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce77febe-4827-4c18-a711-91e984c128e3/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-23 02:35:30,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:35:30,552 INFO L263 TraceCheckSpWp]: Trace formula consists of 1029 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-23 02:35:30,557 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 02:35:30,689 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-11-23 02:35:30,689 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 02:35:30,843 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-11-23 02:35:30,843 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [78592462] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 02:35:30,843 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1444775401] [2021-11-23 02:35:30,848 INFO L159 IcfgInterpreter]: Started Sifa with 67 locations of interest [2021-11-23 02:35:30,848 INFO L166 IcfgInterpreter]: Building call graph [2021-11-23 02:35:30,849 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-23 02:35:30,849 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-23 02:35:30,849 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-23 02:36:11,438 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 447 for LOIs [2021-11-23 02:36:11,690 INFO L197 IcfgInterpreter]: Interpreting procedure setClientPrivateKey with input of size 445 for LOIs [2021-11-23 02:36:11,939 INFO L197 IcfgInterpreter]: Interpreting procedure sendEmail with input of size 261 for LOIs [2021-11-23 02:36:13,547 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailTo with input of size 241 for LOIs [2021-11-23 02:36:13,590 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing with input of size 263 for LOIs [2021-11-23 02:36:14,301 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing__wrappee__Encrypt with input of size 270 for LOIs [2021-11-23 02:36:18,019 INFO L197 IcfgInterpreter]: Interpreting procedure getEmailTo with input of size 241 for LOIs [2021-11-23 02:36:18,065 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailFrom with input of size 473 for LOIs [2021-11-23 02:36:19,620 INFO L197 IcfgInterpreter]: Interpreting procedure getClientAddressBookSize with input of size 233 for LOIs [2021-11-23 02:36:19,665 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-23 02:37:10,861 WARN L227 SmtUtils]: Spent 7.07s on a formula simplification. DAG size of input: 579 DAG size of output: 327 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 02:37:19,750 WARN L227 SmtUtils]: Spent 7.27s on a formula simplification. DAG size of input: 575 DAG size of output: 323 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 02:37:35,608 WARN L227 SmtUtils]: Spent 5.73s on a formula simplification. DAG size of input: 570 DAG size of output: 370 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 02:37:42,096 WARN L227 SmtUtils]: Spent 5.89s on a formula simplification. DAG size of input: 566 DAG size of output: 366 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 02:38:18,445 WARN L227 SmtUtils]: Spent 7.06s on a formula simplification. DAG size of input: 473 DAG size of output: 270 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 02:38:55,868 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSifa [1444775401] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:38:55,868 INFO L186 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2021-11-23 02:38:55,868 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [53] imperfect sequences [4, 4, 4] total 59 [2021-11-23 02:38:55,868 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [995734874] [2021-11-23 02:38:55,868 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:38:55,869 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 54 states [2021-11-23 02:38:55,869 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:38:55,869 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2021-11-23 02:38:55,871 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=178, Invalid=3244, Unknown=0, NotChecked=0, Total=3422 [2021-11-23 02:38:55,871 INFO L87 Difference]: Start difference. First operand 432 states and 643 transitions. Second operand has 54 states, 39 states have (on average 1.1538461538461537) internal successors, (45), 36 states have internal predecessors, (45), 15 states have call successors, (15), 10 states have call predecessors, (15), 7 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12)