./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/email_spec8_product16.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_55bf3a3d-14c9-415b-a14d-ff43af74f7a8/bin/utaipan-EQgc7hIp5V/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55bf3a3d-14c9-415b-a14d-ff43af74f7a8/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_55bf3a3d-14c9-415b-a14d-ff43af74f7a8/bin/utaipan-EQgc7hIp5V/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55bf3a3d-14c9-415b-a14d-ff43af74f7a8/bin/utaipan-EQgc7hIp5V/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/email_spec8_product16.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55bf3a3d-14c9-415b-a14d-ff43af74f7a8/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_55bf3a3d-14c9-415b-a14d-ff43af74f7a8/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 8a7679b9688c44fd84543e8b684d34e72b379518d806d27199a245477e871776 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-aef121e [2021-11-23 02:40:06,986 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-23 02:40:06,989 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-23 02:40:07,020 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-23 02:40:07,021 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-23 02:40:07,022 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-23 02:40:07,024 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-23 02:40:07,027 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-23 02:40:07,029 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-23 02:40:07,031 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-23 02:40:07,032 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-23 02:40:07,034 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-23 02:40:07,035 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-23 02:40:07,036 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-23 02:40:07,038 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-23 02:40:07,040 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-23 02:40:07,041 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-23 02:40:07,043 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-23 02:40:07,046 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-23 02:40:07,048 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-23 02:40:07,051 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-23 02:40:07,053 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-23 02:40:07,054 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-23 02:40:07,056 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-23 02:40:07,060 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-23 02:40:07,061 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-23 02:40:07,061 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-23 02:40:07,062 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-23 02:40:07,063 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-23 02:40:07,065 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-23 02:40:07,065 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-23 02:40:07,066 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-23 02:40:07,067 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-23 02:40:07,068 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-23 02:40:07,070 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-23 02:40:07,070 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-23 02:40:07,071 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-23 02:40:07,071 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-23 02:40:07,072 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-23 02:40:07,073 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-23 02:40:07,074 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-23 02:40:07,075 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55bf3a3d-14c9-415b-a14d-ff43af74f7a8/bin/utaipan-EQgc7hIp5V/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-23 02:40:07,100 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-23 02:40:07,100 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-23 02:40:07,101 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-23 02:40:07,101 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-23 02:40:07,102 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-23 02:40:07,102 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-23 02:40:07,102 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-23 02:40:07,103 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-23 02:40:07,103 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-23 02:40:07,103 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-23 02:40:07,103 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-23 02:40:07,104 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-23 02:40:07,104 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-23 02:40:07,104 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-23 02:40:07,104 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-23 02:40:07,105 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-23 02:40:07,105 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-23 02:40:07,113 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-23 02:40:07,114 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-23 02:40:07,115 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-23 02:40:07,115 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-23 02:40:07,115 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-23 02:40:07,115 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-23 02:40:07,116 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-23 02:40:07,116 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-23 02:40:07,116 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-23 02:40:07,116 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-23 02:40:07,117 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-23 02:40:07,117 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-23 02:40:07,117 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-23 02:40:07,117 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-23 02:40:07,118 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-23 02:40:07,118 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 02:40:07,118 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-23 02:40:07,118 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-23 02:40:07,119 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-23 02:40:07,119 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-23 02:40:07,119 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-23 02:40:07,119 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-23 02:40:07,119 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-23 02:40:07,120 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-23 02:40:07,120 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_55bf3a3d-14c9-415b-a14d-ff43af74f7a8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55bf3a3d-14c9-415b-a14d-ff43af74f7a8/bin/utaipan-EQgc7hIp5V Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8a7679b9688c44fd84543e8b684d34e72b379518d806d27199a245477e871776 [2021-11-23 02:40:07,379 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-23 02:40:07,401 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-23 02:40:07,403 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-23 02:40:07,405 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-23 02:40:07,406 INFO L275 PluginConnector]: CDTParser initialized [2021-11-23 02:40:07,407 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55bf3a3d-14c9-415b-a14d-ff43af74f7a8/bin/utaipan-EQgc7hIp5V/../../sv-benchmarks/c/product-lines/email_spec8_product16.cil.c [2021-11-23 02:40:07,473 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55bf3a3d-14c9-415b-a14d-ff43af74f7a8/bin/utaipan-EQgc7hIp5V/data/f7444e4a2/6f768d785e90451cae7e44737f17b0c9/FLAG5cf42fdd9 [2021-11-23 02:40:08,084 INFO L306 CDTParser]: Found 1 translation units. [2021-11-23 02:40:08,097 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55bf3a3d-14c9-415b-a14d-ff43af74f7a8/sv-benchmarks/c/product-lines/email_spec8_product16.cil.c [2021-11-23 02:40:08,134 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55bf3a3d-14c9-415b-a14d-ff43af74f7a8/bin/utaipan-EQgc7hIp5V/data/f7444e4a2/6f768d785e90451cae7e44737f17b0c9/FLAG5cf42fdd9 [2021-11-23 02:40:08,330 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55bf3a3d-14c9-415b-a14d-ff43af74f7a8/bin/utaipan-EQgc7hIp5V/data/f7444e4a2/6f768d785e90451cae7e44737f17b0c9 [2021-11-23 02:40:08,332 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-23 02:40:08,334 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-23 02:40:08,336 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-23 02:40:08,336 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-23 02:40:08,339 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-23 02:40:08,340 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 02:40:08" (1/1) ... [2021-11-23 02:40:08,341 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@787bd2ff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:40:08, skipping insertion in model container [2021-11-23 02:40:08,342 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 02:40:08" (1/1) ... [2021-11-23 02:40:08,358 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-23 02:40:08,439 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-23 02:40:08,991 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_55bf3a3d-14c9-415b-a14d-ff43af74f7a8/sv-benchmarks/c/product-lines/email_spec8_product16.cil.c[51682,51695] [2021-11-23 02:40:09,026 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 02:40:09,038 INFO L203 MainTranslator]: Completed pre-run [2021-11-23 02:40:09,125 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_55bf3a3d-14c9-415b-a14d-ff43af74f7a8/sv-benchmarks/c/product-lines/email_spec8_product16.cil.c[51682,51695] [2021-11-23 02:40:09,139 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 02:40:09,183 INFO L208 MainTranslator]: Completed translation [2021-11-23 02:40:09,183 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:40:09 WrapperNode [2021-11-23 02:40:09,184 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-23 02:40:09,185 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-23 02:40:09,185 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-23 02:40:09,185 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-23 02:40:09,192 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:40:09" (1/1) ... [2021-11-23 02:40:09,221 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:40:09" (1/1) ... [2021-11-23 02:40:09,282 INFO L137 Inliner]: procedures = 126, calls = 201, calls flagged for inlining = 57, calls inlined = 52, statements flattened = 994 [2021-11-23 02:40:09,282 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-23 02:40:09,283 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-23 02:40:09,283 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-23 02:40:09,283 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-23 02:40:09,292 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:40:09" (1/1) ... [2021-11-23 02:40:09,293 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:40:09" (1/1) ... [2021-11-23 02:40:09,299 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:40:09" (1/1) ... [2021-11-23 02:40:09,300 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:40:09" (1/1) ... [2021-11-23 02:40:09,320 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:40:09" (1/1) ... [2021-11-23 02:40:09,330 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:40:09" (1/1) ... [2021-11-23 02:40:09,335 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:40:09" (1/1) ... [2021-11-23 02:40:09,344 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-23 02:40:09,345 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-23 02:40:09,345 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-23 02:40:09,345 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-23 02:40:09,346 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:40:09" (1/1) ... [2021-11-23 02:40:09,372 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 02:40:09,384 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55bf3a3d-14c9-415b-a14d-ff43af74f7a8/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 02:40:09,419 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55bf3a3d-14c9-415b-a14d-ff43af74f7a8/bin/utaipan-EQgc7hIp5V/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-23 02:40:09,481 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55bf3a3d-14c9-415b-a14d-ff43af74f7a8/bin/utaipan-EQgc7hIp5V/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-23 02:40:09,501 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailEncryptionKey [2021-11-23 02:40:09,502 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailEncryptionKey [2021-11-23 02:40:09,502 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailEncryptionKey [2021-11-23 02:40:09,502 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailEncryptionKey [2021-11-23 02:40:09,502 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2021-11-23 02:40:09,502 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2021-11-23 02:40:09,503 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2021-11-23 02:40:09,503 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2021-11-23 02:40:09,503 INFO L130 BoogieDeclarations]: Found specification of procedure createClientKeyringEntry [2021-11-23 02:40:09,503 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientKeyringEntry [2021-11-23 02:40:09,503 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsEncrypted [2021-11-23 02:40:09,503 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsEncrypted [2021-11-23 02:40:09,504 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAdd [2021-11-23 02:40:09,504 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAdd [2021-11-23 02:40:09,504 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2021-11-23 02:40:09,504 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2021-11-23 02:40:09,505 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2021-11-23 02:40:09,505 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-23 02:40:09,505 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringUser [2021-11-23 02:40:09,506 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringUser [2021-11-23 02:40:09,506 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringPublicKey [2021-11-23 02:40:09,506 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringPublicKey [2021-11-23 02:40:09,506 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2021-11-23 02:40:09,506 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2021-11-23 02:40:09,506 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2021-11-23 02:40:09,507 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2021-11-23 02:40:09,507 INFO L130 BoogieDeclarations]: Found specification of procedure isEncrypted [2021-11-23 02:40:09,507 INFO L138 BoogieDeclarations]: Found implementation of procedure isEncrypted [2021-11-23 02:40:09,508 INFO L130 BoogieDeclarations]: Found specification of procedure setClientPrivateKey [2021-11-23 02:40:09,508 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientPrivateKey [2021-11-23 02:40:09,508 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailTo [2021-11-23 02:40:09,510 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailTo [2021-11-23 02:40:09,510 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-23 02:40:09,510 INFO L130 BoogieDeclarations]: Found specification of procedure generateKeyPair [2021-11-23 02:40:09,510 INFO L138 BoogieDeclarations]: Found implementation of procedure generateKeyPair [2021-11-23 02:40:09,511 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-23 02:40:09,511 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-23 02:40:09,764 INFO L236 CfgBuilder]: Building ICFG [2021-11-23 02:40:09,766 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-23 02:40:10,648 INFO L277 CfgBuilder]: Performing block encoding [2021-11-23 02:40:11,034 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-23 02:40:11,034 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-11-23 02:40:11,037 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:40:11 BoogieIcfgContainer [2021-11-23 02:40:11,037 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-23 02:40:11,039 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-23 02:40:11,039 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-23 02:40:11,043 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-23 02:40:11,044 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 02:40:08" (1/3) ... [2021-11-23 02:40:11,046 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3c133b00 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 02:40:11, skipping insertion in model container [2021-11-23 02:40:11,046 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:40:09" (2/3) ... [2021-11-23 02:40:11,047 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3c133b00 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 02:40:11, skipping insertion in model container [2021-11-23 02:40:11,047 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:40:11" (3/3) ... [2021-11-23 02:40:11,048 INFO L111 eAbstractionObserver]: Analyzing ICFG email_spec8_product16.cil.c [2021-11-23 02:40:11,055 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-23 02:40:11,055 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-23 02:40:11,126 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-23 02:40:11,132 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 02:40:11,132 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-23 02:40:11,153 INFO L276 IsEmpty]: Start isEmpty. Operand has 155 states, 92 states have (on average 1.3695652173913044) internal successors, (126), 96 states have internal predecessors, (126), 45 states have call successors, (45), 16 states have call predecessors, (45), 16 states have return successors, (45), 45 states have call predecessors, (45), 45 states have call successors, (45) [2021-11-23 02:40:11,163 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2021-11-23 02:40:11,164 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:40:11,165 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] [2021-11-23 02:40:11,165 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 02:40:11,170 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:40:11,170 INFO L85 PathProgramCache]: Analyzing trace with hash -1798849747, now seen corresponding path program 1 times [2021-11-23 02:40:11,180 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:40:11,181 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [153259281] [2021-11-23 02:40:11,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:40:11,182 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:40:11,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:40:11,553 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 02:40:11,553 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:40:11,554 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [153259281] [2021-11-23 02:40:11,554 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [153259281] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:40:11,555 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:40:11,555 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-23 02:40:11,557 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2082320742] [2021-11-23 02:40:11,558 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:40:11,562 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-23 02:40:11,563 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:40:11,592 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-23 02:40:11,593 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-23 02:40:11,596 INFO L87 Difference]: Start difference. First operand has 155 states, 92 states have (on average 1.3695652173913044) internal successors, (126), 96 states have internal predecessors, (126), 45 states have call successors, (45), 16 states have call predecessors, (45), 16 states have return successors, (45), 45 states have call predecessors, (45), 45 states have call successors, (45) Second operand has 2 states, 2 states have (on average 13.5) internal successors, (27), 2 states have internal predecessors, (27), 2 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2021-11-23 02:40:11,704 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:40:11,704 INFO L93 Difference]: Finished difference Result 227 states and 310 transitions. [2021-11-23 02:40:11,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-23 02:40:11,707 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 13.5) internal successors, (27), 2 states have internal predecessors, (27), 2 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 56 [2021-11-23 02:40:11,707 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:40:11,719 INFO L225 Difference]: With dead ends: 227 [2021-11-23 02:40:11,719 INFO L226 Difference]: Without dead ends: 152 [2021-11-23 02:40:11,724 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 02:40:11,728 INFO L933 BasicCegarLoop]: 183 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 183 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 02:40:11,729 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 183 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 02:40:11,786 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152 states. [2021-11-23 02:40:11,822 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152 to 152. [2021-11-23 02:40:11,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 152 states, 90 states have (on average 1.3333333333333333) internal successors, (120), 93 states have internal predecessors, (120), 45 states have call successors, (45), 16 states have call predecessors, (45), 16 states have return successors, (44), 44 states have call predecessors, (44), 44 states have call successors, (44) [2021-11-23 02:40:11,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 209 transitions. [2021-11-23 02:40:11,830 INFO L78 Accepts]: Start accepts. Automaton has 152 states and 209 transitions. Word has length 56 [2021-11-23 02:40:11,831 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:40:11,832 INFO L470 AbstractCegarLoop]: Abstraction has 152 states and 209 transitions. [2021-11-23 02:40:11,832 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 13.5) internal successors, (27), 2 states have internal predecessors, (27), 2 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2021-11-23 02:40:11,832 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 209 transitions. [2021-11-23 02:40:11,836 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-11-23 02:40:11,837 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:40:11,837 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] [2021-11-23 02:40:11,837 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-23 02:40:11,838 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 02:40:11,839 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:40:11,839 INFO L85 PathProgramCache]: Analyzing trace with hash -127855960, now seen corresponding path program 1 times [2021-11-23 02:40:11,839 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:40:11,840 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [110772644] [2021-11-23 02:40:11,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:40:11,840 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:40:11,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:40:12,018 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 02:40:12,018 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:40:12,019 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [110772644] [2021-11-23 02:40:12,020 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [110772644] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:40:12,025 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:40:12,025 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 02:40:12,025 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1044707279] [2021-11-23 02:40:12,026 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:40:12,027 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 02:40:12,028 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:40:12,029 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 02:40:12,029 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 02:40:12,030 INFO L87 Difference]: Start difference. First operand 152 states and 209 transitions. Second operand has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 2 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2021-11-23 02:40:12,182 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:40:12,182 INFO L93 Difference]: Finished difference Result 223 states and 298 transitions. [2021-11-23 02:40:12,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 02:40:12,183 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 2 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 57 [2021-11-23 02:40:12,184 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:40:12,191 INFO L225 Difference]: With dead ends: 223 [2021-11-23 02:40:12,191 INFO L226 Difference]: Without dead ends: 154 [2021-11-23 02:40:12,199 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 02:40:12,202 INFO L933 BasicCegarLoop]: 180 mSDtfsCounter, 0 mSDsluCounter, 206 mSDsCounter, 0 mSdLazyCounter, 58 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 359 SdHoareTripleChecker+Invalid, 58 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 58 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 02:40:12,202 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 359 Invalid, 58 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 58 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 02:40:12,206 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154 states. [2021-11-23 02:40:12,240 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154 to 154. [2021-11-23 02:40:12,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 154 states, 92 states have (on average 1.326086956521739) internal successors, (122), 95 states have internal predecessors, (122), 45 states have call successors, (45), 16 states have call predecessors, (45), 16 states have return successors, (44), 44 states have call predecessors, (44), 44 states have call successors, (44) [2021-11-23 02:40:12,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 211 transitions. [2021-11-23 02:40:12,244 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 211 transitions. Word has length 57 [2021-11-23 02:40:12,244 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:40:12,244 INFO L470 AbstractCegarLoop]: Abstraction has 154 states and 211 transitions. [2021-11-23 02:40:12,245 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 2 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2021-11-23 02:40:12,245 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 211 transitions. [2021-11-23 02:40:12,248 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-11-23 02:40:12,248 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:40:12,248 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] [2021-11-23 02:40:12,249 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-23 02:40:12,249 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 02:40:12,251 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:40:12,251 INFO L85 PathProgramCache]: Analyzing trace with hash -377461035, now seen corresponding path program 1 times [2021-11-23 02:40:12,252 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:40:12,252 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1497867931] [2021-11-23 02:40:12,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:40:12,253 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:40:12,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:40:12,377 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 02:40:12,377 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:40:12,378 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1497867931] [2021-11-23 02:40:12,378 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1497867931] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:40:12,378 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:40:12,378 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 02:40:12,378 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1919866567] [2021-11-23 02:40:12,378 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:40:12,379 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 02:40:12,379 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:40:12,380 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 02:40:12,380 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 02:40:12,380 INFO L87 Difference]: Start difference. First operand 154 states and 211 transitions. Second operand has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 2 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2021-11-23 02:40:12,494 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:40:12,494 INFO L93 Difference]: Finished difference Result 338 states and 481 transitions. [2021-11-23 02:40:12,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 02:40:12,495 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 2 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 62 [2021-11-23 02:40:12,496 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:40:12,501 INFO L225 Difference]: With dead ends: 338 [2021-11-23 02:40:12,502 INFO L226 Difference]: Without dead ends: 202 [2021-11-23 02:40:12,503 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 02:40:12,511 INFO L933 BasicCegarLoop]: 201 mSDtfsCounter, 57 mSDsluCounter, 203 mSDsCounter, 0 mSdLazyCounter, 59 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 377 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 59 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 02:40:12,512 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [72 Valid, 377 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 59 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 02:40:12,514 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 202 states. [2021-11-23 02:40:12,536 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 202 to 197. [2021-11-23 02:40:12,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 197 states, 124 states have (on average 1.4112903225806452) internal successors, (175), 127 states have internal predecessors, (175), 56 states have call successors, (56), 16 states have call predecessors, (56), 16 states have return successors, (55), 55 states have call predecessors, (55), 55 states have call successors, (55) [2021-11-23 02:40:12,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 197 states to 197 states and 286 transitions. [2021-11-23 02:40:12,566 INFO L78 Accepts]: Start accepts. Automaton has 197 states and 286 transitions. Word has length 62 [2021-11-23 02:40:12,568 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:40:12,568 INFO L470 AbstractCegarLoop]: Abstraction has 197 states and 286 transitions. [2021-11-23 02:40:12,570 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 2 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2021-11-23 02:40:12,570 INFO L276 IsEmpty]: Start isEmpty. Operand 197 states and 286 transitions. [2021-11-23 02:40:12,577 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2021-11-23 02:40:12,577 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:40:12,577 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] [2021-11-23 02:40:12,577 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-23 02:40:12,578 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 02:40:12,578 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:40:12,578 INFO L85 PathProgramCache]: Analyzing trace with hash 1851970374, now seen corresponding path program 1 times [2021-11-23 02:40:12,579 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:40:12,579 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [62693106] [2021-11-23 02:40:12,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:40:12,579 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:40:12,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:40:12,703 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 02:40:12,704 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:40:12,704 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [62693106] [2021-11-23 02:40:12,704 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [62693106] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-23 02:40:12,704 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [145970268] [2021-11-23 02:40:12,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:40:12,705 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 02:40:12,705 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55bf3a3d-14c9-415b-a14d-ff43af74f7a8/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 02:40:12,707 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55bf3a3d-14c9-415b-a14d-ff43af74f7a8/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 02:40:12,733 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55bf3a3d-14c9-415b-a14d-ff43af74f7a8/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-23 02:40:13,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:40:13,033 INFO L263 TraceCheckSpWp]: Trace formula consists of 918 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-23 02:40:13,043 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 02:40:13,231 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 02:40:13,231 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 02:40:13,417 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 02:40:13,417 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [145970268] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 02:40:13,417 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [502509489] [2021-11-23 02:40:13,455 INFO L159 IcfgInterpreter]: Started Sifa with 52 locations of interest [2021-11-23 02:40:13,469 INFO L166 IcfgInterpreter]: Building call graph [2021-11-23 02:40:13,494 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-23 02:40:13,500 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-23 02:40:13,501 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-23 02:40:40,382 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 444 for LOIs [2021-11-23 02:40:40,729 INFO L197 IcfgInterpreter]: Interpreting procedure setClientPrivateKey with input of size 448 for LOIs [2021-11-23 02:40:41,061 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-23 02:40:52,676 WARN L227 SmtUtils]: Spent 5.19s on a formula simplification. DAG size of input: 444 DAG size of output: 308 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 02:40:58,126 WARN L227 SmtUtils]: Spent 5.33s on a formula simplification. DAG size of input: 467 DAG size of output: 328 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 02:41:04,117 WARN L227 SmtUtils]: Spent 5.24s on a formula simplification. DAG size of input: 448 DAG size of output: 305 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 02:41:09,785 WARN L227 SmtUtils]: Spent 5.49s on a formula simplification. DAG size of input: 472 DAG size of output: 325 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 02:41:14,994 WARN L227 SmtUtils]: Spent 5.00s on a formula simplification. DAG size of input: 468 DAG size of output: 332 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 02:41:24,731 WARN L227 SmtUtils]: Spent 5.33s on a formula simplification. DAG size of input: 490 DAG size of output: 341 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 02:41:36,170 WARN L227 SmtUtils]: Spent 5.53s on a formula simplification. DAG size of input: 512 DAG size of output: 349 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 02:41:46,441 WARN L227 SmtUtils]: Spent 8.97s on a formula simplification. DAG size of input: 582 DAG size of output: 330 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 02:42:06,604 WARN L227 SmtUtils]: Spent 18.74s on a formula simplification. DAG size of input: 584 DAG size of output: 452 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 02:42:14,308 WARN L227 SmtUtils]: Spent 7.16s on a formula simplification. DAG size of input: 572 DAG size of output: 422 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 02:42:22,591 WARN L227 SmtUtils]: Spent 7.73s on a formula simplification. DAG size of input: 570 DAG size of output: 344 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 02:42:28,282 WARN L227 SmtUtils]: Spent 5.40s on a formula simplification. DAG size of input: 570 DAG size of output: 357 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 02:42:28,285 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSifa [502509489] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:42:28,285 INFO L186 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2021-11-23 02:42:28,286 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [4, 4, 4] total 26 [2021-11-23 02:42:28,288 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [38121892] [2021-11-23 02:42:28,289 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:42:28,290 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-11-23 02:42:28,294 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:42:28,295 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-11-23 02:42:28,295 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=568, Unknown=0, NotChecked=0, Total=650 [2021-11-23 02:42:28,296 INFO L87 Difference]: Start difference. First operand 197 states and 286 transitions. Second operand has 21 states, 16 states have (on average 2.0625) internal successors, (33), 15 states have internal predecessors, (33), 7 states have call successors, (13), 3 states have call predecessors, (13), 3 states have return successors, (11), 7 states have call predecessors, (11), 7 states have call successors, (11) [2021-11-23 02:42:48,124 WARN L227 SmtUtils]: Spent 12.60s on a formula simplification. DAG size of input: 559 DAG size of output: 354 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 02:42:53,901 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:42:53,901 INFO L93 Difference]: Finished difference Result 474 states and 734 transitions. [2021-11-23 02:42:53,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-11-23 02:42:53,901 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 16 states have (on average 2.0625) internal successors, (33), 15 states have internal predecessors, (33), 7 states have call successors, (13), 3 states have call predecessors, (13), 3 states have return successors, (11), 7 states have call predecessors, (11), 7 states have call successors, (11) Word has length 63 [2021-11-23 02:42:53,902 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:42:53,905 INFO L225 Difference]: With dead ends: 474 [2021-11-23 02:42:53,905 INFO L226 Difference]: Without dead ends: 295 [2021-11-23 02:42:53,906 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 193 GetRequests, 167 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 154 ImplicationChecksByTransitivity, 125.4s TimeCoverageRelationStatistics Valid=99, Invalid=657, Unknown=0, NotChecked=0, Total=756 [2021-11-23 02:42:53,907 INFO L933 BasicCegarLoop]: 224 mSDtfsCounter, 110 mSDsluCounter, 2726 mSDsCounter, 0 mSdLazyCounter, 2050 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 110 SdHoareTripleChecker+Valid, 2870 SdHoareTripleChecker+Invalid, 2064 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 2050 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.2s IncrementalHoareTripleChecker+Time [2021-11-23 02:42:53,907 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [110 Valid, 2870 Invalid, 2064 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [14 Valid, 2050 Invalid, 0 Unknown, 0 Unchecked, 7.2s Time] [2021-11-23 02:42:53,908 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 295 states. [2021-11-23 02:42:53,977 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 295 to 220. [2021-11-23 02:42:53,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 220 states, 146 states have (on average 1.4246575342465753) internal successors, (208), 149 states have internal predecessors, (208), 56 states have call successors, (56), 17 states have call predecessors, (56), 17 states have return successors, (55), 55 states have call predecessors, (55), 55 states have call successors, (55) [2021-11-23 02:42:53,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 220 states to 220 states and 319 transitions. [2021-11-23 02:42:53,980 INFO L78 Accepts]: Start accepts. Automaton has 220 states and 319 transitions. Word has length 63 [2021-11-23 02:42:53,981 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:42:53,981 INFO L470 AbstractCegarLoop]: Abstraction has 220 states and 319 transitions. [2021-11-23 02:42:53,981 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 16 states have (on average 2.0625) internal successors, (33), 15 states have internal predecessors, (33), 7 states have call successors, (13), 3 states have call predecessors, (13), 3 states have return successors, (11), 7 states have call predecessors, (11), 7 states have call successors, (11) [2021-11-23 02:42:53,982 INFO L276 IsEmpty]: Start isEmpty. Operand 220 states and 319 transitions. [2021-11-23 02:42:53,983 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2021-11-23 02:42:53,984 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:42:53,984 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] [2021-11-23 02:42:54,023 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55bf3a3d-14c9-415b-a14d-ff43af74f7a8/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-23 02:42:54,202 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55bf3a3d-14c9-415b-a14d-ff43af74f7a8/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 02:42:54,202 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 02:42:54,203 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:42:54,203 INFO L85 PathProgramCache]: Analyzing trace with hash 195838519, now seen corresponding path program 1 times [2021-11-23 02:42:54,203 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:42:54,203 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [947422533] [2021-11-23 02:42:54,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:42:54,203 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:42:54,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:42:54,297 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 02:42:54,297 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:42:54,297 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [947422533] [2021-11-23 02:42:54,297 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [947422533] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:42:54,297 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:42:54,298 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 02:42:54,298 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [839690051] [2021-11-23 02:42:54,298 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:42:54,300 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 02:42:54,300 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:42:54,301 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 02:42:54,301 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 02:42:54,301 INFO L87 Difference]: Start difference. First operand 220 states and 319 transitions. Second operand has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 2 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2021-11-23 02:42:54,463 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:42:54,463 INFO L93 Difference]: Finished difference Result 533 states and 802 transitions. [2021-11-23 02:42:54,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 02:42:54,464 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 2 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 68 [2021-11-23 02:42:54,464 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:42:54,467 INFO L225 Difference]: With dead ends: 533 [2021-11-23 02:42:54,467 INFO L226 Difference]: Without dead ends: 337 [2021-11-23 02:42:54,468 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 02:42:54,469 INFO L933 BasicCegarLoop]: 198 mSDtfsCounter, 55 mSDsluCounter, 205 mSDsCounter, 0 mSdLazyCounter, 60 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 70 SdHoareTripleChecker+Valid, 375 SdHoareTripleChecker+Invalid, 61 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 60 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 02:42:54,470 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [70 Valid, 375 Invalid, 61 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 60 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 02:42:54,471 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 337 states. [2021-11-23 02:42:54,572 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 337 to 332. [2021-11-23 02:42:54,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 332 states, 233 states have (on average 1.4763948497854078) internal successors, (344), 236 states have internal predecessors, (344), 81 states have call successors, (81), 17 states have call predecessors, (81), 17 states have return successors, (80), 80 states have call predecessors, (80), 80 states have call successors, (80) [2021-11-23 02:42:54,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 332 states to 332 states and 505 transitions. [2021-11-23 02:42:54,576 INFO L78 Accepts]: Start accepts. Automaton has 332 states and 505 transitions. Word has length 68 [2021-11-23 02:42:54,576 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:42:54,576 INFO L470 AbstractCegarLoop]: Abstraction has 332 states and 505 transitions. [2021-11-23 02:42:54,577 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 2 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2021-11-23 02:42:54,577 INFO L276 IsEmpty]: Start isEmpty. Operand 332 states and 505 transitions. [2021-11-23 02:42:54,579 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2021-11-23 02:42:54,579 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:42:54,580 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] [2021-11-23 02:42:54,580 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-23 02:42:54,580 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 02:42:54,580 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:42:54,581 INFO L85 PathProgramCache]: Analyzing trace with hash -864267835, now seen corresponding path program 1 times [2021-11-23 02:42:54,581 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:42:54,581 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1071403451] [2021-11-23 02:42:54,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:42:54,581 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:42:54,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:42:54,649 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 02:42:54,650 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:42:54,650 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1071403451] [2021-11-23 02:42:54,650 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1071403451] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-23 02:42:54,650 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1071379407] [2021-11-23 02:42:54,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:42:54,651 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 02:42:54,651 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55bf3a3d-14c9-415b-a14d-ff43af74f7a8/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 02:42:54,657 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55bf3a3d-14c9-415b-a14d-ff43af74f7a8/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 02:42:54,677 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55bf3a3d-14c9-415b-a14d-ff43af74f7a8/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-23 02:42:54,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:42:54,891 INFO L263 TraceCheckSpWp]: Trace formula consists of 948 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-23 02:42:54,895 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 02:42:55,018 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 02:42:55,019 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 02:42:55,165 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 02:42:55,166 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1071379407] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 02:42:55,166 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1466970838] [2021-11-23 02:42:55,171 INFO L159 IcfgInterpreter]: Started Sifa with 56 locations of interest [2021-11-23 02:42:55,171 INFO L166 IcfgInterpreter]: Building call graph [2021-11-23 02:42:55,171 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-23 02:42:55,171 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-23 02:42:55,172 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-23 02:43:26,092 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 444 for LOIs [2021-11-23 02:43:26,356 INFO L197 IcfgInterpreter]: Interpreting procedure setClientPrivateKey with input of size 444 for LOIs [2021-11-23 02:43:26,610 INFO L197 IcfgInterpreter]: Interpreting procedure sendEmail with input of size 255 for LOIs [2021-11-23 02:43:28,319 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailTo with input of size 235 for LOIs [2021-11-23 02:43:28,360 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing with input of size 257 for LOIs [2021-11-23 02:43:42,594 INFO L197 IcfgInterpreter]: Interpreting procedure getEmailTo with input of size 227 for LOIs [2021-11-23 02:43:42,634 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailFrom with input of size 454 for LOIs [2021-11-23 02:43:43,184 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-23 02:43:54,559 WARN L227 SmtUtils]: Spent 5.27s on a formula simplification. DAG size of input: 444 DAG size of output: 308 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 02:44:00,221 WARN L227 SmtUtils]: Spent 5.54s on a formula simplification. DAG size of input: 467 DAG size of output: 328 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 02:44:16,067 WARN L227 SmtUtils]: Spent 5.08s on a formula simplification. DAG size of input: 468 DAG size of output: 332 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 02:44:25,921 WARN L227 SmtUtils]: Spent 5.35s on a formula simplification. DAG size of input: 490 DAG size of output: 341 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 02:44:37,492 WARN L227 SmtUtils]: Spent 5.63s on a formula simplification. DAG size of input: 512 DAG size of output: 349 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 02:44:57,747 WARN L227 SmtUtils]: Spent 18.83s on a formula simplification. DAG size of input: 587 DAG size of output: 457 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 02:45:08,454 WARN L227 SmtUtils]: Spent 9.09s on a formula simplification. DAG size of input: 589 DAG size of output: 337 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 02:45:14,064 WARN L227 SmtUtils]: Spent 5.09s on a formula simplification. DAG size of input: 569 DAG size of output: 353 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 02:46:02,227 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSifa [1466970838] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:46:02,228 INFO L186 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2021-11-23 02:46:02,228 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [43] imperfect sequences [4, 4, 4] total 49 [2021-11-23 02:46:02,228 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [330145524] [2021-11-23 02:46:02,228 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:46:02,229 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2021-11-23 02:46:02,229 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:46:02,230 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2021-11-23 02:46:02,231 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=134, Invalid=2218, Unknown=0, NotChecked=0, Total=2352 [2021-11-23 02:46:02,231 INFO L87 Difference]: Start difference. First operand 332 states and 505 transitions. Second operand has 44 states, 30 states have (on average 1.2) internal successors, (36), 28 states have internal predecessors, (36), 14 states have call successors, (14), 8 states have call predecessors, (14), 6 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2021-11-23 02:46:22,554 WARN L227 SmtUtils]: Spent 18.16s on a formula simplification. DAG size of input: 504 DAG size of output: 447 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 02:47:04,511 WARN L227 SmtUtils]: Spent 8.63s on a formula simplification. DAG size of input: 589 DAG size of output: 418 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 02:47:14,070 WARN L227 SmtUtils]: Spent 8.94s on a formula simplification. DAG size of input: 595 DAG size of output: 418 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 02:47:48,960 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:47:48,960 INFO L93 Difference]: Finished difference Result 786 states and 1247 transitions. [2021-11-23 02:47:48,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2021-11-23 02:47:48,961 INFO L78 Accepts]: Start accepts. Automaton has has 44 states, 30 states have (on average 1.2) internal successors, (36), 28 states have internal predecessors, (36), 14 states have call successors, (14), 8 states have call predecessors, (14), 6 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) Word has length 69 [2021-11-23 02:47:48,961 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:47:48,966 INFO L225 Difference]: With dead ends: 786 [2021-11-23 02:47:48,966 INFO L226 Difference]: Without dead ends: 517 [2021-11-23 02:47:48,968 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 229 GetRequests, 161 SyntacticMatches, 1 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 956 ImplicationChecksByTransitivity, 230.1s TimeCoverageRelationStatistics Valid=317, Invalid=4375, Unknown=0, NotChecked=0, Total=4692 [2021-11-23 02:47:48,969 INFO L933 BasicCegarLoop]: 200 mSDtfsCounter, 267 mSDsluCounter, 4490 mSDsCounter, 0 mSdLazyCounter, 5419 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 270 SdHoareTripleChecker+Valid, 4555 SdHoareTripleChecker+Invalid, 5460 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 5419 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15.2s IncrementalHoareTripleChecker+Time [2021-11-23 02:47:48,970 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [270 Valid, 4555 Invalid, 5460 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [41 Valid, 5419 Invalid, 0 Unknown, 0 Unchecked, 15.2s Time] [2021-11-23 02:47:48,971 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 517 states. [2021-11-23 02:47:49,140 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 517 to 415. [2021-11-23 02:47:49,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 415 states, 303 states have (on average 1.504950495049505) internal successors, (456), 308 states have internal predecessors, (456), 90 states have call successors, (90), 23 states have call predecessors, (90), 21 states have return successors, (89), 85 states have call predecessors, (89), 89 states have call successors, (89) [2021-11-23 02:47:49,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 415 states to 415 states and 635 transitions. [2021-11-23 02:47:49,145 INFO L78 Accepts]: Start accepts. Automaton has 415 states and 635 transitions. Word has length 69 [2021-11-23 02:47:49,146 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:47:49,146 INFO L470 AbstractCegarLoop]: Abstraction has 415 states and 635 transitions. [2021-11-23 02:47:49,146 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 44 states, 30 states have (on average 1.2) internal successors, (36), 28 states have internal predecessors, (36), 14 states have call successors, (14), 8 states have call predecessors, (14), 6 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2021-11-23 02:47:49,146 INFO L276 IsEmpty]: Start isEmpty. Operand 415 states and 635 transitions. [2021-11-23 02:47:49,149 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2021-11-23 02:47:49,149 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:47:49,149 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] [2021-11-23 02:47:49,179 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55bf3a3d-14c9-415b-a14d-ff43af74f7a8/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-23 02:47:49,365 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55bf3a3d-14c9-415b-a14d-ff43af74f7a8/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 02:47:49,365 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 02:47:49,366 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:47:49,366 INFO L85 PathProgramCache]: Analyzing trace with hash 1040193002, now seen corresponding path program 1 times [2021-11-23 02:47:49,366 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:47:49,366 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1170473924] [2021-11-23 02:47:49,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:47:49,366 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:47:49,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:47:49,508 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 02:47:49,508 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:47:49,508 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1170473924] [2021-11-23 02:47:49,509 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1170473924] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-23 02:47:49,509 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [579101146] [2021-11-23 02:47:49,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:47:49,509 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 02:47:49,509 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55bf3a3d-14c9-415b-a14d-ff43af74f7a8/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 02:47:49,510 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55bf3a3d-14c9-415b-a14d-ff43af74f7a8/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 02:47:49,529 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55bf3a3d-14c9-415b-a14d-ff43af74f7a8/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-23 02:47:49,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:47:49,781 INFO L263 TraceCheckSpWp]: Trace formula consists of 1054 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-23 02:47:49,786 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 02:47:49,905 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 02:47:49,906 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 02:47:50,068 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 02:47:50,069 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [579101146] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 02:47:50,069 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1109273493] [2021-11-23 02:47:50,073 INFO L159 IcfgInterpreter]: Started Sifa with 61 locations of interest [2021-11-23 02:47:50,073 INFO L166 IcfgInterpreter]: Building call graph [2021-11-23 02:47:50,073 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-23 02:47:50,074 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-23 02:47:50,074 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-23 02:49:20,697 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 444 for LOIs [2021-11-23 02:49:20,953 INFO L197 IcfgInterpreter]: Interpreting procedure setClientKeyringPublicKey with input of size 438 for LOIs [2021-11-23 02:49:21,228 INFO L197 IcfgInterpreter]: Interpreting procedure createClientKeyringEntry with input of size 279 for LOIs [2021-11-23 02:49:21,362 INFO L197 IcfgInterpreter]: Interpreting procedure setClientPrivateKey with input of size 448 for LOIs [2021-11-23 02:49:21,628 INFO L197 IcfgInterpreter]: Interpreting procedure setClientKeyringUser with input of size 457 for LOIs [2021-11-23 02:49:21,921 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-23 02:49:33,059 WARN L227 SmtUtils]: Spent 5.17s on a formula simplification. DAG size of input: 444 DAG size of output: 308 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 02:49:38,609 WARN L227 SmtUtils]: Spent 5.42s on a formula simplification. DAG size of input: 467 DAG size of output: 328 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 02:49:44,581 WARN L227 SmtUtils]: Spent 5.24s on a formula simplification. DAG size of input: 448 DAG size of output: 305 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 02:49:50,290 WARN L227 SmtUtils]: Spent 5.49s on a formula simplification. DAG size of input: 472 DAG size of output: 325 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 02:49:55,538 WARN L227 SmtUtils]: Spent 5.05s on a formula simplification. DAG size of input: 468 DAG size of output: 332 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 02:50:05,381 WARN L227 SmtUtils]: Spent 5.40s on a formula simplification. DAG size of input: 490 DAG size of output: 341 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 02:50:17,498 WARN L227 SmtUtils]: Spent 5.72s on a formula simplification. DAG size of input: 512 DAG size of output: 349 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 02:50:26,823 WARN L227 SmtUtils]: Spent 6.06s on a formula simplification. DAG size of input: 581 DAG size of output: 301 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 02:51:01,160 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSifa [1109273493] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:51:01,162 INFO L186 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2021-11-23 02:51:01,162 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [28] imperfect sequences [4, 4, 4] total 34 [2021-11-23 02:51:01,162 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [482196299] [2021-11-23 02:51:01,162 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:51:01,163 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2021-11-23 02:51:01,163 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:51:01,163 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2021-11-23 02:51:01,164 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=110, Invalid=1012, Unknown=0, NotChecked=0, Total=1122 [2021-11-23 02:51:01,164 INFO L87 Difference]: Start difference. First operand 415 states and 635 transitions. Second operand has 29 states, 19 states have (on average 1.894736842105263) internal successors, (36), 17 states have internal predecessors, (36), 10 states have call successors, (16), 6 states have call predecessors, (16), 6 states have return successors, (14), 10 states have call predecessors, (14), 10 states have call successors, (14) [2021-11-23 02:51:23,141 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:51:23,142 INFO L93 Difference]: Finished difference Result 816 states and 1288 transitions. [2021-11-23 02:51:23,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-11-23 02:51:23,142 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 19 states have (on average 1.894736842105263) internal successors, (36), 17 states have internal predecessors, (36), 10 states have call successors, (16), 6 states have call predecessors, (16), 6 states have return successors, (14), 10 states have call predecessors, (14), 10 states have call successors, (14) Word has length 72 [2021-11-23 02:51:23,143 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:51:23,148 INFO L225 Difference]: With dead ends: 816 [2021-11-23 02:51:23,148 INFO L226 Difference]: Without dead ends: 547 [2021-11-23 02:51:23,150 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 222 GetRequests, 186 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 277 ImplicationChecksByTransitivity, 112.1s TimeCoverageRelationStatistics Valid=142, Invalid=1264, Unknown=0, NotChecked=0, Total=1406 [2021-11-23 02:51:23,151 INFO L933 BasicCegarLoop]: 205 mSDtfsCounter, 174 mSDsluCounter, 3300 mSDsCounter, 0 mSdLazyCounter, 3186 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 174 SdHoareTripleChecker+Valid, 3411 SdHoareTripleChecker+Invalid, 3206 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 3186 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.7s IncrementalHoareTripleChecker+Time [2021-11-23 02:51:23,151 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [174 Valid, 3411 Invalid, 3206 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [20 Valid, 3186 Invalid, 0 Unknown, 0 Unchecked, 8.7s Time] [2021-11-23 02:51:23,153 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 547 states. [2021-11-23 02:51:23,373 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 547 to 455. [2021-11-23 02:51:23,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 455 states, 335 states have (on average 1.4955223880597015) internal successors, (501), 342 states have internal predecessors, (501), 95 states have call successors, (95), 26 states have call predecessors, (95), 24 states have return successors, (94), 88 states have call predecessors, (94), 94 states have call successors, (94) [2021-11-23 02:51:23,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 455 states to 455 states and 690 transitions. [2021-11-23 02:51:23,378 INFO L78 Accepts]: Start accepts. Automaton has 455 states and 690 transitions. Word has length 72 [2021-11-23 02:51:23,379 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:51:23,379 INFO L470 AbstractCegarLoop]: Abstraction has 455 states and 690 transitions. [2021-11-23 02:51:23,379 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 19 states have (on average 1.894736842105263) internal successors, (36), 17 states have internal predecessors, (36), 10 states have call successors, (16), 6 states have call predecessors, (16), 6 states have return successors, (14), 10 states have call predecessors, (14), 10 states have call successors, (14) [2021-11-23 02:51:23,379 INFO L276 IsEmpty]: Start isEmpty. Operand 455 states and 690 transitions. [2021-11-23 02:51:23,382 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2021-11-23 02:51:23,382 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:51:23,382 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] [2021-11-23 02:51:23,414 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55bf3a3d-14c9-415b-a14d-ff43af74f7a8/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-11-23 02:51:23,593 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55bf3a3d-14c9-415b-a14d-ff43af74f7a8/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2021-11-23 02:51:23,596 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 02:51:23,597 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:51:23,597 INFO L85 PathProgramCache]: Analyzing trace with hash 1650153239, now seen corresponding path program 1 times [2021-11-23 02:51:23,597 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:51:23,597 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [754324527] [2021-11-23 02:51:23,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:51:23,598 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:51:23,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:51:23,709 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 02:51:23,709 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:51:23,709 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [754324527] [2021-11-23 02:51:23,709 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [754324527] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-23 02:51:23,710 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1153604623] [2021-11-23 02:51:23,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:51:23,710 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 02:51:23,710 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55bf3a3d-14c9-415b-a14d-ff43af74f7a8/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 02:51:23,711 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55bf3a3d-14c9-415b-a14d-ff43af74f7a8/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 02:51:23,729 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55bf3a3d-14c9-415b-a14d-ff43af74f7a8/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-23 02:51:23,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:51:23,948 INFO L263 TraceCheckSpWp]: Trace formula consists of 959 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-23 02:51:23,952 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 02:51:24,076 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 02:51:24,076 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 02:51:24,225 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 02:51:24,225 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1153604623] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 02:51:24,225 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [218999452] [2021-11-23 02:51:24,229 INFO L159 IcfgInterpreter]: Started Sifa with 60 locations of interest [2021-11-23 02:51:24,230 INFO L166 IcfgInterpreter]: Building call graph [2021-11-23 02:51:24,231 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-23 02:51:24,231 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-23 02:51:24,231 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs