./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/email_spec1_product31.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_bacf8c7c-743a-4344-990b-170b3445179e/bin/utaipan-EQgc7hIp5V/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bacf8c7c-743a-4344-990b-170b3445179e/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_bacf8c7c-743a-4344-990b-170b3445179e/bin/utaipan-EQgc7hIp5V/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bacf8c7c-743a-4344-990b-170b3445179e/bin/utaipan-EQgc7hIp5V/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/email_spec1_product31.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bacf8c7c-743a-4344-990b-170b3445179e/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_bacf8c7c-743a-4344-990b-170b3445179e/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 ca4739abfecd00b8d2b799ccc2617c6e4b4e221f88b8a7e722070835771a8404 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-aef121e [2021-11-23 02:26:19,046 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-23 02:26:19,048 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-23 02:26:19,118 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-23 02:26:19,119 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-23 02:26:19,121 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-23 02:26:19,122 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-23 02:26:19,125 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-23 02:26:19,127 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-23 02:26:19,128 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-23 02:26:19,130 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-23 02:26:19,131 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-23 02:26:19,132 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-23 02:26:19,139 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-23 02:26:19,141 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-23 02:26:19,145 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-23 02:26:19,147 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-23 02:26:19,154 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-23 02:26:19,156 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-23 02:26:19,161 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-23 02:26:19,168 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-23 02:26:19,170 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-23 02:26:19,171 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-23 02:26:19,173 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-23 02:26:19,179 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-23 02:26:19,186 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-23 02:26:19,187 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-23 02:26:19,188 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-23 02:26:19,190 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-23 02:26:19,192 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-23 02:26:19,193 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-23 02:26:19,195 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-23 02:26:19,196 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-23 02:26:19,197 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-23 02:26:19,199 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-23 02:26:19,200 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-23 02:26:19,202 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-23 02:26:19,202 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-23 02:26:19,202 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-23 02:26:19,203 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-23 02:26:19,204 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-23 02:26:19,205 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bacf8c7c-743a-4344-990b-170b3445179e/bin/utaipan-EQgc7hIp5V/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-23 02:26:19,237 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-23 02:26:19,237 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-23 02:26:19,238 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-23 02:26:19,238 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-23 02:26:19,238 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-23 02:26:19,239 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-23 02:26:19,239 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-23 02:26:19,239 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-23 02:26:19,239 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-23 02:26:19,240 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-23 02:26:19,240 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-23 02:26:19,240 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-23 02:26:19,240 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-23 02:26:19,240 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-23 02:26:19,241 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-23 02:26:19,241 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-23 02:26:19,241 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-23 02:26:19,241 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-23 02:26:19,242 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-23 02:26:19,242 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-23 02:26:19,242 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-23 02:26:19,243 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-23 02:26:19,243 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-23 02:26:19,243 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-23 02:26:19,243 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-23 02:26:19,243 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-23 02:26:19,244 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-23 02:26:19,244 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-23 02:26:19,244 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-23 02:26:19,244 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-23 02:26:19,244 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-23 02:26:19,245 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-23 02:26:19,245 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 02:26:19,245 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-23 02:26:19,245 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-23 02:26:19,245 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-23 02:26:19,246 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-23 02:26:19,246 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-23 02:26:19,246 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-23 02:26:19,246 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-23 02:26:19,246 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-23 02:26:19,247 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_bacf8c7c-743a-4344-990b-170b3445179e/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bacf8c7c-743a-4344-990b-170b3445179e/bin/utaipan-EQgc7hIp5V Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ca4739abfecd00b8d2b799ccc2617c6e4b4e221f88b8a7e722070835771a8404 [2021-11-23 02:26:19,495 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-23 02:26:19,516 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-23 02:26:19,519 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-23 02:26:19,520 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-23 02:26:19,521 INFO L275 PluginConnector]: CDTParser initialized [2021-11-23 02:26:19,522 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bacf8c7c-743a-4344-990b-170b3445179e/bin/utaipan-EQgc7hIp5V/../../sv-benchmarks/c/product-lines/email_spec1_product31.cil.c [2021-11-23 02:26:19,580 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bacf8c7c-743a-4344-990b-170b3445179e/bin/utaipan-EQgc7hIp5V/data/02ae61d4f/77e38862f4904bfa997d9f0097d3727d/FLAG4698ab2c7 [2021-11-23 02:26:20,179 INFO L306 CDTParser]: Found 1 translation units. [2021-11-23 02:26:20,180 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bacf8c7c-743a-4344-990b-170b3445179e/sv-benchmarks/c/product-lines/email_spec1_product31.cil.c [2021-11-23 02:26:20,201 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bacf8c7c-743a-4344-990b-170b3445179e/bin/utaipan-EQgc7hIp5V/data/02ae61d4f/77e38862f4904bfa997d9f0097d3727d/FLAG4698ab2c7 [2021-11-23 02:26:20,421 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bacf8c7c-743a-4344-990b-170b3445179e/bin/utaipan-EQgc7hIp5V/data/02ae61d4f/77e38862f4904bfa997d9f0097d3727d [2021-11-23 02:26:20,424 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-23 02:26:20,425 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-23 02:26:20,427 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-23 02:26:20,427 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-23 02:26:20,431 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-23 02:26:20,432 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 02:26:20" (1/1) ... [2021-11-23 02:26:20,433 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@35ea8af6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:26:20, skipping insertion in model container [2021-11-23 02:26:20,433 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 02:26:20" (1/1) ... [2021-11-23 02:26:20,440 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-23 02:26:20,516 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-23 02:26:21,172 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_bacf8c7c-743a-4344-990b-170b3445179e/sv-benchmarks/c/product-lines/email_spec1_product31.cil.c[64142,64155] [2021-11-23 02:26:21,175 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 02:26:21,189 INFO L203 MainTranslator]: Completed pre-run [2021-11-23 02:26:21,346 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_bacf8c7c-743a-4344-990b-170b3445179e/sv-benchmarks/c/product-lines/email_spec1_product31.cil.c[64142,64155] [2021-11-23 02:26:21,347 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 02:26:21,391 INFO L208 MainTranslator]: Completed translation [2021-11-23 02:26:21,392 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:26:21 WrapperNode [2021-11-23 02:26:21,392 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-23 02:26:21,393 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-23 02:26:21,394 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-23 02:26:21,394 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-23 02:26:21,402 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:26:21" (1/1) ... [2021-11-23 02:26:21,449 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:26:21" (1/1) ... [2021-11-23 02:26:21,525 INFO L137 Inliner]: procedures = 131, calls = 218, calls flagged for inlining = 61, calls inlined = 56, statements flattened = 1018 [2021-11-23 02:26:21,526 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-23 02:26:21,527 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-23 02:26:21,527 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-23 02:26:21,527 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-23 02:26:21,536 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:26:21" (1/1) ... [2021-11-23 02:26:21,550 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:26:21" (1/1) ... [2021-11-23 02:26:21,558 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:26:21" (1/1) ... [2021-11-23 02:26:21,559 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:26:21" (1/1) ... [2021-11-23 02:26:21,598 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:26:21" (1/1) ... [2021-11-23 02:26:21,609 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:26:21" (1/1) ... [2021-11-23 02:26:21,614 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:26:21" (1/1) ... [2021-11-23 02:26:21,623 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-23 02:26:21,624 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-23 02:26:21,625 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-23 02:26:21,625 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-23 02:26:21,626 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:26:21" (1/1) ... [2021-11-23 02:26:21,634 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 02:26:21,647 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bacf8c7c-743a-4344-990b-170b3445179e/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 02:26:21,659 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bacf8c7c-743a-4344-990b-170b3445179e/bin/utaipan-EQgc7hIp5V/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-23 02:26:21,680 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bacf8c7c-743a-4344-990b-170b3445179e/bin/utaipan-EQgc7hIp5V/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-23 02:26:21,718 INFO L130 BoogieDeclarations]: Found specification of procedure getClientPrivateKey [2021-11-23 02:26:21,718 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientPrivateKey [2021-11-23 02:26:21,718 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailEncryptionKey [2021-11-23 02:26:21,719 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailEncryptionKey [2021-11-23 02:26:21,719 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailEncryptionKey [2021-11-23 02:26:21,719 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailEncryptionKey [2021-11-23 02:26:21,719 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2021-11-23 02:26:21,720 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2021-11-23 02:26:21,720 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2021-11-23 02:26:21,720 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2021-11-23 02:26:21,720 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable [2021-11-23 02:26:21,721 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable [2021-11-23 02:26:21,721 INFO L130 BoogieDeclarations]: Found specification of procedure createClientKeyringEntry [2021-11-23 02:26:21,721 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientKeyringEntry [2021-11-23 02:26:21,721 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsEncrypted [2021-11-23 02:26:21,722 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsEncrypted [2021-11-23 02:26:21,722 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSignKey [2021-11-23 02:26:21,722 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSignKey [2021-11-23 02:26:21,722 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAdd [2021-11-23 02:26:21,723 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAdd [2021-11-23 02:26:21,723 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2021-11-23 02:26:21,723 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailFrom [2021-11-23 02:26:21,723 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailFrom [2021-11-23 02:26:21,724 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2021-11-23 02:26:21,724 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2021-11-23 02:26:21,724 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-23 02:26:21,724 INFO L130 BoogieDeclarations]: Found specification of procedure isSigned [2021-11-23 02:26:21,724 INFO L138 BoogieDeclarations]: Found implementation of procedure isSigned [2021-11-23 02:26:21,725 INFO L130 BoogieDeclarations]: Found specification of procedure isKeyPairValid [2021-11-23 02:26:21,725 INFO L138 BoogieDeclarations]: Found implementation of procedure isKeyPairValid [2021-11-23 02:26:21,725 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringUser [2021-11-23 02:26:21,725 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringUser [2021-11-23 02:26:21,726 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringPublicKey [2021-11-23 02:26:21,726 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringPublicKey [2021-11-23 02:26:21,726 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2021-11-23 02:26:21,726 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2021-11-23 02:26:21,727 INFO L130 BoogieDeclarations]: Found specification of procedure findPublicKey [2021-11-23 02:26:21,727 INFO L138 BoogieDeclarations]: Found implementation of procedure findPublicKey [2021-11-23 02:26:21,727 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2021-11-23 02:26:21,727 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2021-11-23 02:26:21,728 INFO L130 BoogieDeclarations]: Found specification of procedure isEncrypted [2021-11-23 02:26:21,728 INFO L138 BoogieDeclarations]: Found implementation of procedure isEncrypted [2021-11-23 02:26:21,728 INFO L130 BoogieDeclarations]: Found specification of procedure setClientPrivateKey [2021-11-23 02:26:21,728 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientPrivateKey [2021-11-23 02:26:21,728 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailTo [2021-11-23 02:26:21,729 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailTo [2021-11-23 02:26:21,729 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-23 02:26:21,729 INFO L130 BoogieDeclarations]: Found specification of procedure generateKeyPair [2021-11-23 02:26:21,729 INFO L138 BoogieDeclarations]: Found implementation of procedure generateKeyPair [2021-11-23 02:26:21,730 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-23 02:26:21,731 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-23 02:26:22,041 INFO L236 CfgBuilder]: Building ICFG [2021-11-23 02:26:22,043 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-23 02:26:22,936 INFO L277 CfgBuilder]: Performing block encoding [2021-11-23 02:26:23,397 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-23 02:26:23,397 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-11-23 02:26:23,400 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:26:23 BoogieIcfgContainer [2021-11-23 02:26:23,400 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-23 02:26:23,402 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-23 02:26:23,402 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-23 02:26:23,405 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-23 02:26:23,406 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 02:26:20" (1/3) ... [2021-11-23 02:26:23,406 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4e7181fa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 02:26:23, skipping insertion in model container [2021-11-23 02:26:23,407 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:26:21" (2/3) ... [2021-11-23 02:26:23,407 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4e7181fa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 02:26:23, skipping insertion in model container [2021-11-23 02:26:23,407 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:26:23" (3/3) ... [2021-11-23 02:26:23,408 INFO L111 eAbstractionObserver]: Analyzing ICFG email_spec1_product31.cil.c [2021-11-23 02:26:23,414 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-23 02:26:23,414 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-23 02:26:23,467 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-23 02:26:23,474 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 02:26:23,475 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-23 02:26:23,497 INFO L276 IsEmpty]: Start isEmpty. Operand has 201 states, 117 states have (on average 1.3162393162393162) internal successors, (154), 121 states have internal predecessors, (154), 59 states have call successors, (59), 23 states have call predecessors, (59), 23 states have return successors, (59), 59 states have call predecessors, (59), 59 states have call successors, (59) [2021-11-23 02:26:23,507 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2021-11-23 02:26:23,508 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:26:23,508 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:26:23,509 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 02:26:23,514 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:26:23,514 INFO L85 PathProgramCache]: Analyzing trace with hash -1783309674, now seen corresponding path program 1 times [2021-11-23 02:26:23,524 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:26:23,524 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1345265943] [2021-11-23 02:26:23,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:26:23,525 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:26:23,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:26:23,899 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 02:26:23,900 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:26:23,900 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1345265943] [2021-11-23 02:26:23,901 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1345265943] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:26:23,901 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:26:23,902 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-23 02:26:23,903 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1367840458] [2021-11-23 02:26:23,904 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:26:23,909 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-23 02:26:23,909 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:26:23,937 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-23 02:26:23,938 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-23 02:26:23,941 INFO L87 Difference]: Start difference. First operand has 201 states, 117 states have (on average 1.3162393162393162) internal successors, (154), 121 states have internal predecessors, (154), 59 states have call successors, (59), 23 states have call predecessors, (59), 23 states have return successors, (59), 59 states have call predecessors, (59), 59 states have call successors, (59) Second operand has 2 states, 2 states have (on average 15.5) internal successors, (31), 2 states have internal predecessors, (31), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2021-11-23 02:26:24,133 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:26:24,134 INFO L93 Difference]: Finished difference Result 319 states and 422 transitions. [2021-11-23 02:26:24,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-23 02:26:24,136 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 15.5) internal successors, (31), 2 states have internal predecessors, (31), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 64 [2021-11-23 02:26:24,137 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:26:24,155 INFO L225 Difference]: With dead ends: 319 [2021-11-23 02:26:24,155 INFO L226 Difference]: Without dead ends: 198 [2021-11-23 02:26:24,165 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 02:26:24,169 INFO L933 BasicCegarLoop]: 232 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 232 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 02:26:24,170 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 232 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 02:26:24,188 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 198 states. [2021-11-23 02:26:24,252 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 198 to 198. [2021-11-23 02:26:24,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 198 states, 115 states have (on average 1.2869565217391303) internal successors, (148), 118 states have internal predecessors, (148), 59 states have call successors, (59), 23 states have call predecessors, (59), 23 states have return successors, (58), 58 states have call predecessors, (58), 58 states have call successors, (58) [2021-11-23 02:26:24,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 198 states to 198 states and 265 transitions. [2021-11-23 02:26:24,267 INFO L78 Accepts]: Start accepts. Automaton has 198 states and 265 transitions. Word has length 64 [2021-11-23 02:26:24,268 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:26:24,268 INFO L470 AbstractCegarLoop]: Abstraction has 198 states and 265 transitions. [2021-11-23 02:26:24,269 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 15.5) internal successors, (31), 2 states have internal predecessors, (31), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2021-11-23 02:26:24,270 INFO L276 IsEmpty]: Start isEmpty. Operand 198 states and 265 transitions. [2021-11-23 02:26:24,281 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-11-23 02:26:24,281 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:26:24,285 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:26:24,285 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-23 02:26:24,285 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 02:26:24,286 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:26:24,286 INFO L85 PathProgramCache]: Analyzing trace with hash 485538171, now seen corresponding path program 1 times [2021-11-23 02:26:24,286 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:26:24,287 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [166637292] [2021-11-23 02:26:24,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:26:24,287 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:26:24,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:26:24,458 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 02:26:24,459 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:26:24,460 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [166637292] [2021-11-23 02:26:24,460 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [166637292] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:26:24,460 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:26:24,460 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 02:26:24,460 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [982533120] [2021-11-23 02:26:24,461 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:26:24,462 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 02:26:24,462 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:26:24,463 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 02:26:24,463 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 02:26:24,464 INFO L87 Difference]: Start difference. First operand 198 states and 265 transitions. Second operand has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2021-11-23 02:26:24,619 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:26:24,619 INFO L93 Difference]: Finished difference Result 315 states and 410 transitions. [2021-11-23 02:26:24,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 02:26:24,620 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 65 [2021-11-23 02:26:24,620 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:26:24,628 INFO L225 Difference]: With dead ends: 315 [2021-11-23 02:26:24,628 INFO L226 Difference]: Without dead ends: 200 [2021-11-23 02:26:24,633 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 02:26:24,635 INFO L933 BasicCegarLoop]: 229 mSDtfsCounter, 0 mSDsluCounter, 262 mSDsCounter, 0 mSdLazyCounter, 72 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 457 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 72 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 02:26:24,636 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 457 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 72 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 02:26:24,640 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 200 states. [2021-11-23 02:26:24,667 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 200 to 200. [2021-11-23 02:26:24,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 200 states, 117 states have (on average 1.2820512820512822) internal successors, (150), 120 states have internal predecessors, (150), 59 states have call successors, (59), 23 states have call predecessors, (59), 23 states have return successors, (58), 58 states have call predecessors, (58), 58 states have call successors, (58) [2021-11-23 02:26:24,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 200 states to 200 states and 267 transitions. [2021-11-23 02:26:24,674 INFO L78 Accepts]: Start accepts. Automaton has 200 states and 267 transitions. Word has length 65 [2021-11-23 02:26:24,674 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:26:24,675 INFO L470 AbstractCegarLoop]: Abstraction has 200 states and 267 transitions. [2021-11-23 02:26:24,675 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2021-11-23 02:26:24,676 INFO L276 IsEmpty]: Start isEmpty. Operand 200 states and 267 transitions. [2021-11-23 02:26:24,680 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2021-11-23 02:26:24,681 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:26:24,682 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:26:24,682 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-23 02:26:24,682 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 02:26:24,683 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:26:24,683 INFO L85 PathProgramCache]: Analyzing trace with hash 1704321633, now seen corresponding path program 1 times [2021-11-23 02:26:24,683 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:26:24,683 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1430252134] [2021-11-23 02:26:24,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:26:24,684 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:26:24,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:26:24,822 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 02:26:24,822 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:26:24,823 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1430252134] [2021-11-23 02:26:24,823 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1430252134] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:26:24,823 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:26:24,823 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 02:26:24,824 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1507428276] [2021-11-23 02:26:24,824 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:26:24,824 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 02:26:24,825 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:26:24,825 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 02:26:24,825 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 02:26:24,826 INFO L87 Difference]: Start difference. First operand 200 states and 267 transitions. Second operand has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2021-11-23 02:26:24,974 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:26:24,974 INFO L93 Difference]: Finished difference Result 430 states and 593 transitions. [2021-11-23 02:26:24,974 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 02:26:24,974 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 70 [2021-11-23 02:26:24,975 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:26:24,977 INFO L225 Difference]: With dead ends: 430 [2021-11-23 02:26:24,978 INFO L226 Difference]: Without dead ends: 248 [2021-11-23 02:26:24,979 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 02:26:24,988 INFO L933 BasicCegarLoop]: 250 mSDtfsCounter, 57 mSDsluCounter, 258 mSDsCounter, 0 mSdLazyCounter, 75 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 474 SdHoareTripleChecker+Invalid, 76 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 75 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 02:26:24,989 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [72 Valid, 474 Invalid, 76 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 75 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 02:26:24,991 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 248 states. [2021-11-23 02:26:25,026 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 248 to 243. [2021-11-23 02:26:25,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 243 states, 149 states have (on average 1.3624161073825503) internal successors, (203), 152 states have internal predecessors, (203), 70 states have call successors, (70), 23 states have call predecessors, (70), 23 states have return successors, (69), 69 states have call predecessors, (69), 69 states have call successors, (69) [2021-11-23 02:26:25,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 243 states to 243 states and 342 transitions. [2021-11-23 02:26:25,031 INFO L78 Accepts]: Start accepts. Automaton has 243 states and 342 transitions. Word has length 70 [2021-11-23 02:26:25,031 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:26:25,031 INFO L470 AbstractCegarLoop]: Abstraction has 243 states and 342 transitions. [2021-11-23 02:26:25,032 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2021-11-23 02:26:25,032 INFO L276 IsEmpty]: Start isEmpty. Operand 243 states and 342 transitions. [2021-11-23 02:26:25,034 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2021-11-23 02:26:25,034 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:26:25,034 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 02:26:25,034 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-23 02:26:25,035 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 02:26:25,035 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:26:25,035 INFO L85 PathProgramCache]: Analyzing trace with hash -1873049773, now seen corresponding path program 1 times [2021-11-23 02:26:25,036 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:26:25,036 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1081702886] [2021-11-23 02:26:25,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:26:25,036 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:26:25,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:26:25,142 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 02:26:25,143 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:26:25,143 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1081702886] [2021-11-23 02:26:25,143 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1081702886] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-23 02:26:25,143 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [256962699] [2021-11-23 02:26:25,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:26:25,144 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 02:26:25,144 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bacf8c7c-743a-4344-990b-170b3445179e/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 02:26:25,146 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bacf8c7c-743a-4344-990b-170b3445179e/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 02:26:25,164 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bacf8c7c-743a-4344-990b-170b3445179e/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-23 02:26:25,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:26:25,446 INFO L263 TraceCheckSpWp]: Trace formula consists of 1003 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-23 02:26:25,455 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 02:26:25,635 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 02:26:25,636 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 02:26:25,809 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 02:26:25,809 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [256962699] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 02:26:25,810 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [602771306] [2021-11-23 02:26:25,831 INFO L159 IcfgInterpreter]: Started Sifa with 60 locations of interest [2021-11-23 02:26:25,831 INFO L166 IcfgInterpreter]: Building call graph [2021-11-23 02:26:25,836 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-23 02:26:25,842 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-23 02:26:25,842 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-23 02:26:51,079 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 443 for LOIs [2021-11-23 02:26:51,349 INFO L197 IcfgInterpreter]: Interpreting procedure setClientPrivateKey with input of size 445 for LOIs [2021-11-23 02:26:51,593 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-23 02:27:23,757 WARN L227 SmtUtils]: Spent 5.48s on a formula simplification. DAG size of input: 490 DAG size of output: 352 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 02:27:45,799 WARN L227 SmtUtils]: Spent 7.89s on a formula simplification. DAG size of input: 570 DAG size of output: 347 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 02:27:51,583 WARN L227 SmtUtils]: Spent 5.35s on a formula simplification. DAG size of input: 572 DAG size of output: 324 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 02:27:57,378 WARN L227 SmtUtils]: Spent 5.31s on a formula simplification. DAG size of input: 568 DAG size of output: 320 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 02:28:03,101 WARN L227 SmtUtils]: Spent 5.42s on a formula simplification. DAG size of input: 568 DAG size of output: 360 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 02:28:03,112 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSifa [602771306] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:28:03,112 INFO L186 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2021-11-23 02:28:03,112 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [4, 4, 4] total 26 [2021-11-23 02:28:03,113 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2145584387] [2021-11-23 02:28:03,113 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:28:03,114 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-11-23 02:28:03,114 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:28:03,115 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-11-23 02:28:03,115 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=567, Unknown=0, NotChecked=0, Total=650 [2021-11-23 02:28:03,116 INFO L87 Difference]: Start difference. First operand 243 states and 342 transitions. Second operand has 21 states, 16 states have (on average 2.3125) internal successors, (37), 15 states have internal predecessors, (37), 7 states have call successors, (15), 3 states have call predecessors, (15), 3 states have return successors, (13), 7 states have call predecessors, (13), 7 states have call successors, (13) [2021-11-23 02:28:11,398 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:28:11,398 INFO L93 Difference]: Finished difference Result 565 states and 845 transitions. [2021-11-23 02:28:11,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-11-23 02:28:11,399 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 16 states have (on average 2.3125) internal successors, (37), 15 states have internal predecessors, (37), 7 states have call successors, (15), 3 states have call predecessors, (15), 3 states have return successors, (13), 7 states have call predecessors, (13), 7 states have call successors, (13) Word has length 71 [2021-11-23 02:28:11,400 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:28:11,403 INFO L225 Difference]: With dead ends: 565 [2021-11-23 02:28:11,403 INFO L226 Difference]: Without dead ends: 340 [2021-11-23 02:28:11,404 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 215 GetRequests, 191 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 145 ImplicationChecksByTransitivity, 71.5s TimeCoverageRelationStatistics Valid=83, Invalid=567, Unknown=0, NotChecked=0, Total=650 [2021-11-23 02:28:11,405 INFO L933 BasicCegarLoop]: 272 mSDtfsCounter, 110 mSDsluCounter, 3467 mSDsCounter, 0 mSdLazyCounter, 2192 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 110 SdHoareTripleChecker+Valid, 3625 SdHoareTripleChecker+Invalid, 2205 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 2192 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.0s IncrementalHoareTripleChecker+Time [2021-11-23 02:28:11,406 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [110 Valid, 3625 Invalid, 2205 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [13 Valid, 2192 Invalid, 0 Unknown, 0 Unchecked, 8.0s Time] [2021-11-23 02:28:11,407 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 340 states. [2021-11-23 02:28:11,498 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 340 to 266. [2021-11-23 02:28:11,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 266 states, 171 states have (on average 1.3801169590643274) internal successors, (236), 174 states have internal predecessors, (236), 70 states have call successors, (70), 24 states have call predecessors, (70), 24 states have return successors, (69), 69 states have call predecessors, (69), 69 states have call successors, (69) [2021-11-23 02:28:11,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 266 states to 266 states and 375 transitions. [2021-11-23 02:28:11,506 INFO L78 Accepts]: Start accepts. Automaton has 266 states and 375 transitions. Word has length 71 [2021-11-23 02:28:11,506 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:28:11,507 INFO L470 AbstractCegarLoop]: Abstraction has 266 states and 375 transitions. [2021-11-23 02:28:11,507 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 16 states have (on average 2.3125) internal successors, (37), 15 states have internal predecessors, (37), 7 states have call successors, (15), 3 states have call predecessors, (15), 3 states have return successors, (13), 7 states have call predecessors, (13), 7 states have call successors, (13) [2021-11-23 02:28:11,507 INFO L276 IsEmpty]: Start isEmpty. Operand 266 states and 375 transitions. [2021-11-23 02:28:11,509 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2021-11-23 02:28:11,509 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:28:11,509 INFO L514 BasicCegarLoop]: trace histogram [4, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:28:11,546 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bacf8c7c-743a-4344-990b-170b3445179e/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2021-11-23 02:28:11,732 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bacf8c7c-743a-4344-990b-170b3445179e/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 02:28:11,733 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 02:28:11,733 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:28:11,733 INFO L85 PathProgramCache]: Analyzing trace with hash -1817652384, now seen corresponding path program 1 times [2021-11-23 02:28:11,733 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:28:11,733 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1266732896] [2021-11-23 02:28:11,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:28:11,733 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:28:11,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:28:11,818 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 02:28:11,819 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:28:11,819 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1266732896] [2021-11-23 02:28:11,819 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1266732896] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:28:11,819 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:28:11,819 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 02:28:11,820 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [36315414] [2021-11-23 02:28:11,820 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:28:11,820 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 02:28:11,821 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:28:11,821 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 02:28:11,821 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 02:28:11,822 INFO L87 Difference]: Start difference. First operand 266 states and 375 transitions. Second operand has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 2 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2021-11-23 02:28:12,047 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:28:12,048 INFO L93 Difference]: Finished difference Result 625 states and 914 transitions. [2021-11-23 02:28:12,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 02:28:12,048 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 2 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 76 [2021-11-23 02:28:12,049 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:28:12,052 INFO L225 Difference]: With dead ends: 625 [2021-11-23 02:28:12,052 INFO L226 Difference]: Without dead ends: 383 [2021-11-23 02:28:12,053 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 02:28:12,054 INFO L933 BasicCegarLoop]: 249 mSDtfsCounter, 55 mSDsluCounter, 262 mSDsCounter, 0 mSdLazyCounter, 74 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 70 SdHoareTripleChecker+Valid, 476 SdHoareTripleChecker+Invalid, 75 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 74 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 02:28:12,055 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [70 Valid, 476 Invalid, 75 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 74 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 02:28:12,056 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 383 states. [2021-11-23 02:28:12,172 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 383 to 378. [2021-11-23 02:28:12,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 378 states, 258 states have (on average 1.441860465116279) internal successors, (372), 261 states have internal predecessors, (372), 95 states have call successors, (95), 24 states have call predecessors, (95), 24 states have return successors, (94), 94 states have call predecessors, (94), 94 states have call successors, (94) [2021-11-23 02:28:12,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 378 states to 378 states and 561 transitions. [2021-11-23 02:28:12,177 INFO L78 Accepts]: Start accepts. Automaton has 378 states and 561 transitions. Word has length 76 [2021-11-23 02:28:12,177 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:28:12,178 INFO L470 AbstractCegarLoop]: Abstraction has 378 states and 561 transitions. [2021-11-23 02:28:12,178 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 2 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2021-11-23 02:28:12,178 INFO L276 IsEmpty]: Start isEmpty. Operand 378 states and 561 transitions. [2021-11-23 02:28:12,180 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2021-11-23 02:28:12,181 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:28:12,181 INFO L514 BasicCegarLoop]: trace histogram [4, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:28:12,181 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-23 02:28:12,181 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 02:28:12,182 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:28:12,182 INFO L85 PathProgramCache]: Analyzing trace with hash -75576913, now seen corresponding path program 1 times [2021-11-23 02:28:12,182 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:28:12,182 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2126329852] [2021-11-23 02:28:12,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:28:12,183 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:28:12,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:28:12,249 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 02:28:12,249 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:28:12,250 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2126329852] [2021-11-23 02:28:12,250 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2126329852] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-23 02:28:12,250 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [19805275] [2021-11-23 02:28:12,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:28:12,250 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 02:28:12,250 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bacf8c7c-743a-4344-990b-170b3445179e/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 02:28:12,251 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bacf8c7c-743a-4344-990b-170b3445179e/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 02:28:12,271 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bacf8c7c-743a-4344-990b-170b3445179e/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-23 02:28:12,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:28:12,523 INFO L263 TraceCheckSpWp]: Trace formula consists of 1033 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-23 02:28:12,528 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 02:28:12,670 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 02:28:12,670 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 02:28:12,839 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 02:28:12,839 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [19805275] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 02:28:12,839 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [164543052] [2021-11-23 02:28:12,843 INFO L159 IcfgInterpreter]: Started Sifa with 64 locations of interest [2021-11-23 02:28:12,843 INFO L166 IcfgInterpreter]: Building call graph [2021-11-23 02:28:12,844 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-23 02:28:12,844 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-23 02:28:12,844 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-23 02:28:47,426 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 447 for LOIs [2021-11-23 02:28:47,713 INFO L197 IcfgInterpreter]: Interpreting procedure setClientPrivateKey with input of size 446 for LOIs [2021-11-23 02:28:47,968 INFO L197 IcfgInterpreter]: Interpreting procedure sendEmail with input of size 268 for LOIs [2021-11-23 02:28:50,023 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailTo with input of size 236 for LOIs [2021-11-23 02:28:50,065 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing with input of size 270 for LOIs [2021-11-23 02:29:05,766 INFO L197 IcfgInterpreter]: Interpreting procedure getClientPrivateKey with input of size 228 for LOIs [2021-11-23 02:29:05,825 INFO L197 IcfgInterpreter]: Interpreting procedure findPublicKey with input of size 248 for LOIs [2021-11-23 02:29:05,904 INFO L197 IcfgInterpreter]: Interpreting procedure getEmailTo with input of size 253 for LOIs [2021-11-23 02:29:05,953 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailFrom with input of size 480 for LOIs [2021-11-23 02:29:07,556 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-23 02:29:40,817 WARN L227 SmtUtils]: Spent 5.41s on a formula simplification. DAG size of input: 490 DAG size of output: 352 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 02:30:05,648 WARN L227 SmtUtils]: Spent 14.73s on a formula simplification. DAG size of input: 591 DAG size of output: 334 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 02:30:22,315 WARN L227 SmtUtils]: Spent 14.93s on a formula simplification. DAG size of input: 593 DAG size of output: 336 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 02:30:42,416 WARN L227 SmtUtils]: Spent 5.65s on a formula simplification. DAG size of input: 576 DAG size of output: 363 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 02:30:52,909 WARN L227 SmtUtils]: Spent 6.77s on a formula simplification. DAG size of input: 480 DAG size of output: 278 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 02:31:29,762 WARN L227 SmtUtils]: Spent 6.80s on a formula simplification. DAG size of input: 543 DAG size of output: 427 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 02:31:37,312 WARN L227 SmtUtils]: Spent 6.91s on a formula simplification. DAG size of input: 545 DAG size of output: 429 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 02:31:46,150 WARN L227 SmtUtils]: Spent 7.42s on a formula simplification. DAG size of input: 587 DAG size of output: 452 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 02:31:49,730 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSifa [164543052] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:31:49,731 INFO L186 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2021-11-23 02:31:49,731 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [51] imperfect sequences [4, 4, 4] total 57 [2021-11-23 02:31:49,731 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [122896414] [2021-11-23 02:31:49,731 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:31:49,732 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 52 states [2021-11-23 02:31:49,732 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:31:49,732 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2021-11-23 02:31:49,734 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=147, Invalid=3045, Unknown=0, NotChecked=0, Total=3192 [2021-11-23 02:31:49,734 INFO L87 Difference]: Start difference. First operand 378 states and 561 transitions. Second operand has 52 states, 34 states have (on average 1.1764705882352942) internal successors, (40), 32 states have internal predecessors, (40), 16 states have call successors, (16), 10 states have call predecessors, (16), 8 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) [2021-11-23 02:31:57,292 WARN L227 SmtUtils]: Spent 5.02s on a formula simplification. DAG size of input: 369 DAG size of output: 350 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 02:32:02,823 WARN L227 SmtUtils]: Spent 5.17s on a formula simplification. DAG size of input: 371 DAG size of output: 352 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 02:32:09,534 WARN L227 SmtUtils]: Spent 6.17s on a formula simplification. DAG size of input: 369 DAG size of output: 350 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 02:32:16,571 WARN L227 SmtUtils]: Spent 6.36s on a formula simplification. DAG size of input: 367 DAG size of output: 348 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 02:32:23,456 WARN L227 SmtUtils]: Spent 6.28s on a formula simplification. DAG size of input: 369 DAG size of output: 350 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 02:32:31,506 WARN L227 SmtUtils]: Spent 7.27s on a formula simplification. DAG size of input: 375 DAG size of output: 344 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 02:32:58,404 WARN L227 SmtUtils]: Spent 6.46s on a formula simplification. DAG size of input: 340 DAG size of output: 332 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 02:33:14,599 WARN L227 SmtUtils]: Spent 5.23s on a formula simplification. DAG size of input: 554 DAG size of output: 378 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 02:33:21,421 WARN L227 SmtUtils]: Spent 6.26s on a formula simplification. DAG size of input: 556 DAG size of output: 380 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 02:33:28,569 WARN L227 SmtUtils]: Spent 6.55s on a formula simplification. DAG size of input: 578 DAG size of output: 402 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 02:33:37,028 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:33:37,029 INFO L93 Difference]: Finished difference Result 873 states and 1345 transitions. [2021-11-23 02:33:37,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2021-11-23 02:33:37,029 INFO L78 Accepts]: Start accepts. Automaton has has 52 states, 34 states have (on average 1.1764705882352942) internal successors, (40), 32 states have internal predecessors, (40), 16 states have call successors, (16), 10 states have call predecessors, (16), 8 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) Word has length 77 [2021-11-23 02:33:37,030 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:33:37,035 INFO L225 Difference]: With dead ends: 873 [2021-11-23 02:33:37,035 INFO L226 Difference]: Without dead ends: 558 [2021-11-23 02:33:37,040 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 249 GetRequests, 176 SyntacticMatches, 2 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1062 ImplicationChecksByTransitivity, 247.8s TimeCoverageRelationStatistics Valid=273, Invalid=4983, Unknown=0, NotChecked=0, Total=5256 [2021-11-23 02:33:37,041 INFO L933 BasicCegarLoop]: 263 mSDtfsCounter, 394 mSDsluCounter, 7371 mSDsCounter, 0 mSdLazyCounter, 7164 mSolverCounterSat, 67 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 19.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 397 SdHoareTripleChecker+Valid, 7428 SdHoareTripleChecker+Invalid, 7231 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 67 IncrementalHoareTripleChecker+Valid, 7164 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 21.0s IncrementalHoareTripleChecker+Time [2021-11-23 02:33:37,041 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [397 Valid, 7428 Invalid, 7231 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [67 Valid, 7164 Invalid, 0 Unknown, 0 Unchecked, 21.0s Time] [2021-11-23 02:33:37,043 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 558 states. [2021-11-23 02:33:37,241 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 558 to 474. [2021-11-23 02:33:37,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 474 states, 337 states have (on average 1.4688427299703264) internal successors, (495), 342 states have internal predecessors, (495), 106 states have call successors, (106), 32 states have call predecessors, (106), 30 states have return successors, (105), 101 states have call predecessors, (105), 105 states have call successors, (105) [2021-11-23 02:33:37,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 474 states to 474 states and 706 transitions. [2021-11-23 02:33:37,248 INFO L78 Accepts]: Start accepts. Automaton has 474 states and 706 transitions. Word has length 77 [2021-11-23 02:33:37,248 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:33:37,248 INFO L470 AbstractCegarLoop]: Abstraction has 474 states and 706 transitions. [2021-11-23 02:33:37,249 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 52 states, 34 states have (on average 1.1764705882352942) internal successors, (40), 32 states have internal predecessors, (40), 16 states have call successors, (16), 10 states have call predecessors, (16), 8 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) [2021-11-23 02:33:37,249 INFO L276 IsEmpty]: Start isEmpty. Operand 474 states and 706 transitions. [2021-11-23 02:33:37,251 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2021-11-23 02:33:37,251 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:33:37,252 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:33:37,287 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bacf8c7c-743a-4344-990b-170b3445179e/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-23 02:33:37,468 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bacf8c7c-743a-4344-990b-170b3445179e/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2021-11-23 02:33:37,468 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 02:33:37,469 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:33:37,469 INFO L85 PathProgramCache]: Analyzing trace with hash -1103746270, now seen corresponding path program 1 times [2021-11-23 02:33:37,469 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:33:37,469 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1503897744] [2021-11-23 02:33:37,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:33:37,469 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:33:37,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:33:37,554 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 02:33:37,554 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:33:37,556 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1503897744] [2021-11-23 02:33:37,557 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1503897744] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-23 02:33:37,557 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [680393505] [2021-11-23 02:33:37,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:33:37,558 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 02:33:37,558 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bacf8c7c-743a-4344-990b-170b3445179e/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 02:33:37,559 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bacf8c7c-743a-4344-990b-170b3445179e/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 02:33:37,584 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bacf8c7c-743a-4344-990b-170b3445179e/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-23 02:33:37,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:33:37,853 INFO L263 TraceCheckSpWp]: Trace formula consists of 1139 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-23 02:33:37,858 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 02:33:37,995 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 02:33:37,995 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 02:33:38,204 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 02:33:38,204 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [680393505] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 02:33:38,204 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [141970129] [2021-11-23 02:33:38,211 INFO L159 IcfgInterpreter]: Started Sifa with 69 locations of interest [2021-11-23 02:33:38,211 INFO L166 IcfgInterpreter]: Building call graph [2021-11-23 02:33:38,212 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-23 02:33:38,215 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-23 02:33:38,216 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-23 02:34:08,378 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 447 for LOIs [2021-11-23 02:34:08,638 INFO L197 IcfgInterpreter]: Interpreting procedure setClientKeyringPublicKey with input of size 233 for LOIs [2021-11-23 02:34:08,707 INFO L197 IcfgInterpreter]: Interpreting procedure setClientKeyringUser with input of size 232 for LOIs [2021-11-23 02:34:08,786 INFO L197 IcfgInterpreter]: Interpreting procedure sendEmail with input of size 244 for LOIs [2021-11-23 02:34:10,317 INFO L197 IcfgInterpreter]: Interpreting procedure createClientKeyringEntry with input of size 215 for LOIs [2021-11-23 02:34:10,384 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailTo with input of size 212 for LOIs [2021-11-23 02:34:10,423 INFO L197 IcfgInterpreter]: Interpreting procedure setClientPrivateKey with input of size 445 for LOIs [2021-11-23 02:34:10,698 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing with input of size 244 for LOIs [2021-11-23 02:34:23,958 INFO L197 IcfgInterpreter]: Interpreting procedure getClientPrivateKey with input of size 202 for LOIs [2021-11-23 02:34:24,001 INFO L197 IcfgInterpreter]: Interpreting procedure findPublicKey with input of size 224 for LOIs [2021-11-23 02:34:24,074 INFO L197 IcfgInterpreter]: Interpreting procedure getEmailTo with input of size 229 for LOIs [2021-11-23 02:34:24,121 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailFrom with input of size 424 for LOIs [2021-11-23 02:34:25,402 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-23 02:35:06,567 WARN L227 SmtUtils]: Spent 6.61s on a formula simplification. DAG size of input: 490 DAG size of output: 352 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 02:35:16,609 WARN L227 SmtUtils]: Spent 5.08s on a formula simplification. DAG size of input: 512 DAG size of output: 301 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 02:35:32,454 WARN L227 SmtUtils]: Spent 5.75s on a formula simplification. DAG size of input: 511 DAG size of output: 330 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 02:35:50,355 WARN L227 SmtUtils]: Spent 5.97s on a formula simplification. DAG size of input: 504 DAG size of output: 323 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 02:36:05,333 WARN L227 SmtUtils]: Spent 11.45s on a formula simplification. DAG size of input: 424 DAG size of output: 327 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 02:36:57,315 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSifa [141970129] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:36:57,315 INFO L186 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2021-11-23 02:36:57,315 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [56] imperfect sequences [4, 4, 4] total 62 [2021-11-23 02:36:57,316 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1237153163] [2021-11-23 02:36:57,316 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:36:57,317 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 57 states [2021-11-23 02:36:57,317 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:36:57,317 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 57 interpolants. [2021-11-23 02:36:57,319 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=164, Invalid=3618, Unknown=0, NotChecked=0, Total=3782 [2021-11-23 02:36:57,319 INFO L87 Difference]: Start difference. First operand 474 states and 706 transitions. Second operand has 57 states, 35 states have (on average 1.1428571428571428) internal successors, (40), 33 states have internal predecessors, (40), 18 states have call successors, (18), 13 states have call predecessors, (18), 11 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16)