./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/email_spec27_product24.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5e519f3a Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff4b14c5-09d7-4ace-825d-60e4a0ba6a5f/bin/utaipan-7li7fVZpFI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff4b14c5-09d7-4ace-825d-60e4a0ba6a5f/bin/utaipan-7li7fVZpFI/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff4b14c5-09d7-4ace-825d-60e4a0ba6a5f/bin/utaipan-7li7fVZpFI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff4b14c5-09d7-4ace-825d-60e4a0ba6a5f/bin/utaipan-7li7fVZpFI/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/email_spec27_product24.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff4b14c5-09d7-4ace-825d-60e4a0ba6a5f/bin/utaipan-7li7fVZpFI/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff4b14c5-09d7-4ace-825d-60e4a0ba6a5f/bin/utaipan-7li7fVZpFI --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash f1a760a25f6e6d96f820367881f3fbbc32febc8ce03434205938078db6a21524 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-5e519f3 [2022-11-03 01:36:16,021 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-03 01:36:16,023 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-03 01:36:16,053 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-03 01:36:16,054 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-03 01:36:16,055 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-03 01:36:16,057 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-03 01:36:16,058 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-03 01:36:16,060 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-03 01:36:16,061 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-03 01:36:16,062 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-03 01:36:16,064 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-03 01:36:16,064 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-03 01:36:16,066 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-03 01:36:16,067 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-03 01:36:16,068 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-03 01:36:16,069 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-03 01:36:16,070 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-03 01:36:16,072 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-03 01:36:16,073 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-03 01:36:16,075 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-03 01:36:16,076 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-03 01:36:16,078 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-03 01:36:16,079 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-03 01:36:16,082 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-03 01:36:16,083 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-03 01:36:16,083 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-03 01:36:16,084 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-03 01:36:16,085 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-03 01:36:16,086 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-03 01:36:16,086 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-03 01:36:16,087 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-03 01:36:16,088 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-03 01:36:16,089 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-03 01:36:16,090 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-03 01:36:16,090 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-03 01:36:16,091 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-03 01:36:16,091 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-03 01:36:16,092 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-03 01:36:16,093 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-03 01:36:16,094 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-03 01:36:16,095 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff4b14c5-09d7-4ace-825d-60e4a0ba6a5f/bin/utaipan-7li7fVZpFI/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-11-03 01:36:16,119 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-03 01:36:16,120 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-03 01:36:16,120 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-03 01:36:16,120 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-03 01:36:16,121 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-03 01:36:16,121 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-03 01:36:16,121 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-03 01:36:16,122 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-03 01:36:16,122 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-03 01:36:16,122 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-03 01:36:16,122 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-03 01:36:16,123 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-03 01:36:16,123 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-03 01:36:16,123 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-03 01:36:16,123 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-03 01:36:16,124 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-03 01:36:16,124 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-03 01:36:16,124 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-03 01:36:16,125 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-03 01:36:16,125 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-03 01:36:16,125 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-03 01:36:16,126 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-03 01:36:16,126 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-03 01:36:16,126 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-03 01:36:16,126 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-03 01:36:16,127 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-03 01:36:16,127 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-03 01:36:16,127 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-03 01:36:16,127 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-03 01:36:16,128 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-03 01:36:16,128 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-03 01:36:16,128 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-03 01:36:16,128 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 01:36:16,129 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-03 01:36:16,129 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-03 01:36:16,129 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-03 01:36:16,130 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-03 01:36:16,130 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-03 01:36:16,130 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-03 01:36:16,130 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-03 01:36:16,130 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-03 01:36:16,131 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff4b14c5-09d7-4ace-825d-60e4a0ba6a5f/bin/utaipan-7li7fVZpFI/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff4b14c5-09d7-4ace-825d-60e4a0ba6a5f/bin/utaipan-7li7fVZpFI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f1a760a25f6e6d96f820367881f3fbbc32febc8ce03434205938078db6a21524 [2022-11-03 01:36:16,438 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-03 01:36:16,473 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-03 01:36:16,477 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-03 01:36:16,478 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-03 01:36:16,479 INFO L275 PluginConnector]: CDTParser initialized [2022-11-03 01:36:16,480 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff4b14c5-09d7-4ace-825d-60e4a0ba6a5f/bin/utaipan-7li7fVZpFI/../../sv-benchmarks/c/product-lines/email_spec27_product24.cil.c [2022-11-03 01:36:16,563 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff4b14c5-09d7-4ace-825d-60e4a0ba6a5f/bin/utaipan-7li7fVZpFI/data/e20bee7e6/7411cee7274245fbbb41720cc09addef/FLAG5959df1c1 [2022-11-03 01:36:17,186 INFO L306 CDTParser]: Found 1 translation units. [2022-11-03 01:36:17,187 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff4b14c5-09d7-4ace-825d-60e4a0ba6a5f/sv-benchmarks/c/product-lines/email_spec27_product24.cil.c [2022-11-03 01:36:17,220 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff4b14c5-09d7-4ace-825d-60e4a0ba6a5f/bin/utaipan-7li7fVZpFI/data/e20bee7e6/7411cee7274245fbbb41720cc09addef/FLAG5959df1c1 [2022-11-03 01:36:17,379 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff4b14c5-09d7-4ace-825d-60e4a0ba6a5f/bin/utaipan-7li7fVZpFI/data/e20bee7e6/7411cee7274245fbbb41720cc09addef [2022-11-03 01:36:17,381 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-03 01:36:17,383 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-03 01:36:17,384 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-03 01:36:17,384 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-03 01:36:17,388 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-03 01:36:17,389 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 01:36:17" (1/1) ... [2022-11-03 01:36:17,390 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2c685b0e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:36:17, skipping insertion in model container [2022-11-03 01:36:17,390 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 01:36:17" (1/1) ... [2022-11-03 01:36:17,397 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-03 01:36:17,466 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-03 01:36:18,093 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_ff4b14c5-09d7-4ace-825d-60e4a0ba6a5f/sv-benchmarks/c/product-lines/email_spec27_product24.cil.c[62587,62600] [2022-11-03 01:36:18,098 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 01:36:18,110 INFO L203 MainTranslator]: Completed pre-run [2022-11-03 01:36:18,279 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_ff4b14c5-09d7-4ace-825d-60e4a0ba6a5f/sv-benchmarks/c/product-lines/email_spec27_product24.cil.c[62587,62600] [2022-11-03 01:36:18,282 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 01:36:18,320 INFO L208 MainTranslator]: Completed translation [2022-11-03 01:36:18,320 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:36:18 WrapperNode [2022-11-03 01:36:18,321 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-03 01:36:18,322 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-03 01:36:18,322 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-03 01:36:18,322 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-03 01:36:18,330 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:36:18" (1/1) ... [2022-11-03 01:36:18,363 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:36:18" (1/1) ... [2022-11-03 01:36:18,421 INFO L138 Inliner]: procedures = 130, calls = 210, calls flagged for inlining = 62, calls inlined = 57, statements flattened = 1001 [2022-11-03 01:36:18,421 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-03 01:36:18,422 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-03 01:36:18,422 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-03 01:36:18,422 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-03 01:36:18,432 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:36:18" (1/1) ... [2022-11-03 01:36:18,432 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:36:18" (1/1) ... [2022-11-03 01:36:18,439 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:36:18" (1/1) ... [2022-11-03 01:36:18,439 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:36:18" (1/1) ... [2022-11-03 01:36:18,469 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:36:18" (1/1) ... [2022-11-03 01:36:18,477 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:36:18" (1/1) ... [2022-11-03 01:36:18,494 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:36:18" (1/1) ... [2022-11-03 01:36:18,497 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:36:18" (1/1) ... [2022-11-03 01:36:18,503 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-03 01:36:18,557 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-03 01:36:18,557 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-03 01:36:18,557 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-03 01:36:18,558 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:36:18" (1/1) ... [2022-11-03 01:36:18,569 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 01:36:18,582 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff4b14c5-09d7-4ace-825d-60e4a0ba6a5f/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 01:36:18,600 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff4b14c5-09d7-4ace-825d-60e4a0ba6a5f/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-03 01:36:18,629 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff4b14c5-09d7-4ace-825d-60e4a0ba6a5f/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-03 01:36:18,656 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2022-11-03 01:36:18,656 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2022-11-03 01:36:18,656 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2022-11-03 01:36:18,657 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2022-11-03 01:36:18,657 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable [2022-11-03 01:36:18,657 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable [2022-11-03 01:36:18,657 INFO L130 BoogieDeclarations]: Found specification of procedure createClientKeyringEntry [2022-11-03 01:36:18,657 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientKeyringEntry [2022-11-03 01:36:18,657 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSignKey [2022-11-03 01:36:18,658 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSignKey [2022-11-03 01:36:18,658 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAdd [2022-11-03 01:36:18,658 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAdd [2022-11-03 01:36:18,658 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2022-11-03 01:36:18,658 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailFrom [2022-11-03 01:36:18,659 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailFrom [2022-11-03 01:36:18,659 INFO L130 BoogieDeclarations]: Found specification of procedure queue [2022-11-03 01:36:18,660 INFO L138 BoogieDeclarations]: Found implementation of procedure queue [2022-11-03 01:36:18,660 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2022-11-03 01:36:18,660 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2022-11-03 01:36:18,660 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-03 01:36:18,660 INFO L130 BoogieDeclarations]: Found specification of procedure isSigned [2022-11-03 01:36:18,660 INFO L138 BoogieDeclarations]: Found implementation of procedure isSigned [2022-11-03 01:36:18,661 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringUser [2022-11-03 01:36:18,661 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringUser [2022-11-03 01:36:18,661 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringPublicKey [2022-11-03 01:36:18,661 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringPublicKey [2022-11-03 01:36:18,661 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2022-11-03 01:36:18,662 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2022-11-03 01:36:18,662 INFO L130 BoogieDeclarations]: Found specification of procedure isVerified [2022-11-03 01:36:18,662 INFO L138 BoogieDeclarations]: Found implementation of procedure isVerified [2022-11-03 01:36:18,666 INFO L130 BoogieDeclarations]: Found specification of procedure findPublicKey [2022-11-03 01:36:18,667 INFO L138 BoogieDeclarations]: Found implementation of procedure findPublicKey [2022-11-03 01:36:18,667 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2022-11-03 01:36:18,667 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2022-11-03 01:36:18,667 INFO L130 BoogieDeclarations]: Found specification of procedure setClientPrivateKey [2022-11-03 01:36:18,667 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientPrivateKey [2022-11-03 01:36:18,668 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailTo [2022-11-03 01:36:18,668 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailTo [2022-11-03 01:36:18,668 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-03 01:36:18,668 INFO L130 BoogieDeclarations]: Found specification of procedure generateKeyPair [2022-11-03 01:36:18,669 INFO L138 BoogieDeclarations]: Found implementation of procedure generateKeyPair [2022-11-03 01:36:18,669 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-03 01:36:18,669 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-03 01:36:18,974 INFO L235 CfgBuilder]: Building ICFG [2022-11-03 01:36:18,977 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-03 01:36:19,931 INFO L276 CfgBuilder]: Performing block encoding [2022-11-03 01:36:20,481 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-03 01:36:20,482 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-03 01:36:20,485 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 01:36:20 BoogieIcfgContainer [2022-11-03 01:36:20,485 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-03 01:36:20,487 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-03 01:36:20,487 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-03 01:36:20,491 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-03 01:36:20,491 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 01:36:17" (1/3) ... [2022-11-03 01:36:20,492 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5a525bb4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 01:36:20, skipping insertion in model container [2022-11-03 01:36:20,492 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:36:18" (2/3) ... [2022-11-03 01:36:20,493 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5a525bb4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 01:36:20, skipping insertion in model container [2022-11-03 01:36:20,493 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 01:36:20" (3/3) ... [2022-11-03 01:36:20,495 INFO L112 eAbstractionObserver]: Analyzing ICFG email_spec27_product24.cil.c [2022-11-03 01:36:20,514 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-03 01:36:20,515 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-03 01:36:20,581 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-03 01:36:20,602 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@2205298, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-03 01:36:20,602 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-03 01:36:20,607 INFO L276 IsEmpty]: Start isEmpty. Operand has 174 states, 103 states have (on average 1.3300970873786409) internal successors, (137), 105 states have internal predecessors, (137), 50 states have call successors, (50), 19 states have call predecessors, (50), 19 states have return successors, (50), 50 states have call predecessors, (50), 50 states have call successors, (50) [2022-11-03 01:36:20,622 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-11-03 01:36:20,622 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:36:20,623 INFO L195 NwaCegarLoop]: 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, 1, 1, 1] [2022-11-03 01:36:20,623 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 01:36:20,630 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:36:20,630 INFO L85 PathProgramCache]: Analyzing trace with hash -377720430, now seen corresponding path program 1 times [2022-11-03 01:36:20,640 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:36:20,640 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [812181337] [2022-11-03 01:36:20,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:36:20,641 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:36:20,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:36:20,986 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-11-03 01:36:20,987 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:36:20,987 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [812181337] [2022-11-03 01:36:20,988 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [812181337] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:36:20,988 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:36:20,988 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-03 01:36:20,990 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1281786144] [2022-11-03 01:36:20,991 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:36:21,013 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-03 01:36:21,014 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:36:21,053 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-03 01:36:21,055 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-03 01:36:21,058 INFO L87 Difference]: Start difference. First operand has 174 states, 103 states have (on average 1.3300970873786409) internal successors, (137), 105 states have internal predecessors, (137), 50 states have call successors, (50), 19 states have call predecessors, (50), 19 states have return successors, (50), 50 states have call predecessors, (50), 50 states have call successors, (50) Second operand has 2 states, 2 states have (on average 16.5) internal successors, (33), 2 states have internal predecessors, (33), 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) [2022-11-03 01:36:21,247 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:36:21,248 INFO L93 Difference]: Finished difference Result 265 states and 352 transitions. [2022-11-03 01:36:21,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-03 01:36:21,251 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 16.5) internal successors, (33), 2 states have internal predecessors, (33), 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 68 [2022-11-03 01:36:21,252 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:36:21,266 INFO L225 Difference]: With dead ends: 265 [2022-11-03 01:36:21,266 INFO L226 Difference]: Without dead ends: 171 [2022-11-03 01:36:21,275 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-03 01:36:21,278 INFO L413 NwaCegarLoop]: 200 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 200 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 01:36:21,279 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 200 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 01:36:21,309 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171 states. [2022-11-03 01:36:21,355 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171 to 171. [2022-11-03 01:36:21,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 171 states, 101 states have (on average 1.297029702970297) internal successors, (131), 102 states have internal predecessors, (131), 50 states have call successors, (50), 19 states have call predecessors, (50), 19 states have return successors, (49), 49 states have call predecessors, (49), 49 states have call successors, (49) [2022-11-03 01:36:21,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171 states to 171 states and 230 transitions. [2022-11-03 01:36:21,361 INFO L78 Accepts]: Start accepts. Automaton has 171 states and 230 transitions. Word has length 68 [2022-11-03 01:36:21,363 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:36:21,363 INFO L495 AbstractCegarLoop]: Abstraction has 171 states and 230 transitions. [2022-11-03 01:36:21,363 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 16.5) internal successors, (33), 2 states have internal predecessors, (33), 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) [2022-11-03 01:36:21,364 INFO L276 IsEmpty]: Start isEmpty. Operand 171 states and 230 transitions. [2022-11-03 01:36:21,367 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-11-03 01:36:21,367 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:36:21,368 INFO L195 NwaCegarLoop]: 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, 1, 1, 1, 1] [2022-11-03 01:36:21,368 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-03 01:36:21,369 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 01:36:21,369 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:36:21,370 INFO L85 PathProgramCache]: Analyzing trace with hash -1295193005, now seen corresponding path program 1 times [2022-11-03 01:36:21,370 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:36:21,370 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2049623578] [2022-11-03 01:36:21,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:36:21,371 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:36:21,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:36:21,648 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-11-03 01:36:21,649 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:36:21,649 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2049623578] [2022-11-03 01:36:21,650 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2049623578] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:36:21,650 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:36:21,650 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 01:36:21,650 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1211092908] [2022-11-03 01:36:21,651 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:36:21,652 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 01:36:21,652 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:36:21,653 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 01:36:21,653 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 01:36:21,654 INFO L87 Difference]: Start difference. First operand 171 states and 230 transitions. Second operand has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 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) [2022-11-03 01:36:21,792 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:36:21,793 INFO L93 Difference]: Finished difference Result 261 states and 340 transitions. [2022-11-03 01:36:21,793 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 01:36:21,793 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 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 69 [2022-11-03 01:36:21,794 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:36:21,796 INFO L225 Difference]: With dead ends: 261 [2022-11-03 01:36:21,796 INFO L226 Difference]: Without dead ends: 173 [2022-11-03 01:36:21,797 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 01:36:21,798 INFO L413 NwaCegarLoop]: 197 mSDtfsCounter, 0 mSDsluCounter, 227 mSDsCounter, 0 mSdLazyCounter, 66 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 393 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 66 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 01:36:21,799 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 393 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 66 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 01:36:21,800 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 173 states. [2022-11-03 01:36:21,834 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 173 to 173. [2022-11-03 01:36:21,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 173 states, 103 states have (on average 1.2912621359223302) internal successors, (133), 104 states have internal predecessors, (133), 50 states have call successors, (50), 19 states have call predecessors, (50), 19 states have return successors, (49), 49 states have call predecessors, (49), 49 states have call successors, (49) [2022-11-03 01:36:21,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 173 states to 173 states and 232 transitions. [2022-11-03 01:36:21,842 INFO L78 Accepts]: Start accepts. Automaton has 173 states and 232 transitions. Word has length 69 [2022-11-03 01:36:21,842 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:36:21,843 INFO L495 AbstractCegarLoop]: Abstraction has 173 states and 232 transitions. [2022-11-03 01:36:21,844 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 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) [2022-11-03 01:36:21,844 INFO L276 IsEmpty]: Start isEmpty. Operand 173 states and 232 transitions. [2022-11-03 01:36:21,849 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-11-03 01:36:21,855 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:36:21,856 INFO L195 NwaCegarLoop]: 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] [2022-11-03 01:36:21,856 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-03 01:36:21,856 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 01:36:21,858 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:36:21,863 INFO L85 PathProgramCache]: Analyzing trace with hash -902352069, now seen corresponding path program 1 times [2022-11-03 01:36:21,863 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:36:21,864 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [462514442] [2022-11-03 01:36:21,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:36:21,864 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:36:21,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:36:22,043 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-11-03 01:36:22,043 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:36:22,043 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [462514442] [2022-11-03 01:36:22,044 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [462514442] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:36:22,044 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:36:22,044 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 01:36:22,044 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1299137917] [2022-11-03 01:36:22,044 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:36:22,045 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 01:36:22,045 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:36:22,045 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 01:36:22,046 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 01:36:22,046 INFO L87 Difference]: Start difference. First operand 173 states and 232 transitions. Second operand has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 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) [2022-11-03 01:36:22,203 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:36:22,203 INFO L93 Difference]: Finished difference Result 376 states and 523 transitions. [2022-11-03 01:36:22,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 01:36:22,204 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 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 74 [2022-11-03 01:36:22,206 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:36:22,212 INFO L225 Difference]: With dead ends: 376 [2022-11-03 01:36:22,213 INFO L226 Difference]: Without dead ends: 221 [2022-11-03 01:36:22,214 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 01:36:22,215 INFO L413 NwaCegarLoop]: 214 mSDtfsCounter, 57 mSDsluCounter, 221 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 404 SdHoareTripleChecker+Invalid, 68 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 67 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 01:36:22,215 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [72 Valid, 404 Invalid, 68 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 67 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 01:36:22,216 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 221 states. [2022-11-03 01:36:22,247 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 221 to 216. [2022-11-03 01:36:22,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 216 states, 135 states have (on average 1.3777777777777778) internal successors, (186), 136 states have internal predecessors, (186), 61 states have call successors, (61), 19 states have call predecessors, (61), 19 states have return successors, (60), 60 states have call predecessors, (60), 60 states have call successors, (60) [2022-11-03 01:36:22,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 216 states to 216 states and 307 transitions. [2022-11-03 01:36:22,250 INFO L78 Accepts]: Start accepts. Automaton has 216 states and 307 transitions. Word has length 74 [2022-11-03 01:36:22,250 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:36:22,254 INFO L495 AbstractCegarLoop]: Abstraction has 216 states and 307 transitions. [2022-11-03 01:36:22,254 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 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) [2022-11-03 01:36:22,254 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states and 307 transitions. [2022-11-03 01:36:22,259 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-11-03 01:36:22,259 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:36:22,259 INFO L195 NwaCegarLoop]: 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] [2022-11-03 01:36:22,259 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-03 01:36:22,260 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 01:36:22,261 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:36:22,261 INFO L85 PathProgramCache]: Analyzing trace with hash 55977405, now seen corresponding path program 1 times [2022-11-03 01:36:22,261 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:36:22,261 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1601214710] [2022-11-03 01:36:22,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:36:22,262 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:36:22,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:36:22,488 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-11-03 01:36:22,488 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:36:22,488 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1601214710] [2022-11-03 01:36:22,488 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1601214710] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 01:36:22,489 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1577045555] [2022-11-03 01:36:22,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:36:22,489 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 01:36:22,489 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff4b14c5-09d7-4ace-825d-60e4a0ba6a5f/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 01:36:22,491 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff4b14c5-09d7-4ace-825d-60e4a0ba6a5f/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 01:36:22,525 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff4b14c5-09d7-4ace-825d-60e4a0ba6a5f/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-03 01:36:22,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:36:22,854 INFO L263 TraceCheckSpWp]: Trace formula consists of 1032 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-03 01:36:22,862 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 01:36:22,923 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-11-03 01:36:22,924 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 01:36:23,011 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-11-03 01:36:23,011 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1577045555] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 01:36:23,011 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1499506874] [2022-11-03 01:36:23,033 INFO L159 IcfgInterpreter]: Started Sifa with 64 locations of interest [2022-11-03 01:36:23,033 INFO L166 IcfgInterpreter]: Building call graph [2022-11-03 01:36:23,037 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-03 01:36:23,042 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-03 01:36:23,043 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-03 01:36:56,282 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 444 for LOIs [2022-11-03 01:36:56,567 INFO L197 IcfgInterpreter]: Interpreting procedure setClientPrivateKey with input of size 441 for LOIs [2022-11-03 01:36:56,879 INFO L197 IcfgInterpreter]: Interpreting procedure sendEmail with input of size 259 for LOIs [2022-11-03 01:36:58,840 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailTo with input of size 237 for LOIs [2022-11-03 01:36:58,892 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing with input of size 261 for LOIs [2022-11-03 01:37:09,658 INFO L197 IcfgInterpreter]: Interpreting procedure isReadable with input of size 251 for LOIs [2022-11-03 01:37:09,698 INFO L197 IcfgInterpreter]: Interpreting procedure getEmailTo with input of size 251 for LOIs [2022-11-03 01:37:09,740 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailFrom with input of size 449 for LOIs [2022-11-03 01:37:10,422 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-03 01:37:23,595 WARN L234 SmtUtils]: Spent 5.63s on a formula simplification. DAG size of input: 444 DAG size of output: 244 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 01:37:29,664 WARN L234 SmtUtils]: Spent 5.91s on a formula simplification. DAG size of input: 467 DAG size of output: 264 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 01:37:53,989 WARN L234 SmtUtils]: Spent 6.34s on a formula simplification. DAG size of input: 486 DAG size of output: 333 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 01:38:05,247 WARN L234 SmtUtils]: Spent 5.71s on a formula simplification. DAG size of input: 508 DAG size of output: 310 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 01:38:25,071 WARN L234 SmtUtils]: Spent 19.49s on a formula simplification. DAG size of input: 583 DAG size of output: 441 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 01:38:38,486 WARN L234 SmtUtils]: Spent 11.78s on a formula simplification. DAG size of input: 591 DAG size of output: 346 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 01:38:49,157 WARN L234 SmtUtils]: Spent 6.10s on a formula simplification. DAG size of input: 562 DAG size of output: 350 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 01:39:28,123 WARN L234 SmtUtils]: Spent 5.96s on a formula simplification. DAG size of input: 567 DAG size of output: 380 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 01:39:40,607 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [1499506874] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:39:40,607 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-11-03 01:39:40,607 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [42] imperfect sequences [4, 4, 4] total 48 [2022-11-03 01:39:40,608 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [256283573] [2022-11-03 01:39:40,608 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:39:40,609 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2022-11-03 01:39:40,609 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:39:40,610 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2022-11-03 01:39:40,611 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=125, Invalid=2131, Unknown=0, NotChecked=0, Total=2256 [2022-11-03 01:39:40,611 INFO L87 Difference]: Start difference. First operand 216 states and 307 transitions. Second operand has 43 states, 28 states have (on average 1.3928571428571428) internal successors, (39), 26 states have internal predecessors, (39), 14 states have call successors, (16), 9 states have call predecessors, (16), 7 states have return successors, (14), 12 states have call predecessors, (14), 12 states have call successors, (14) [2022-11-03 01:39:52,169 WARN L234 SmtUtils]: Spent 8.81s on a formula simplification. DAG size of input: 518 DAG size of output: 395 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 01:40:06,803 WARN L234 SmtUtils]: Spent 5.37s on a formula simplification. DAG size of input: 425 DAG size of output: 339 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 01:40:20,432 WARN L234 SmtUtils]: Spent 8.91s on a formula simplification. DAG size of input: 528 DAG size of output: 417 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 01:40:31,313 WARN L234 SmtUtils]: Spent 9.95s on a formula simplification. DAG size of input: 568 DAG size of output: 415 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 01:40:55,237 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:40:55,238 INFO L93 Difference]: Finished difference Result 569 states and 858 transitions. [2022-11-03 01:40:55,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2022-11-03 01:40:55,238 INFO L78 Accepts]: Start accepts. Automaton has has 43 states, 28 states have (on average 1.3928571428571428) internal successors, (39), 26 states have internal predecessors, (39), 14 states have call successors, (16), 9 states have call predecessors, (16), 7 states have return successors, (14), 12 states have call predecessors, (14), 12 states have call successors, (14) Word has length 75 [2022-11-03 01:40:55,239 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:40:55,243 INFO L225 Difference]: With dead ends: 569 [2022-11-03 01:40:55,243 INFO L226 Difference]: Without dead ends: 371 [2022-11-03 01:40:55,245 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 235 GetRequests, 181 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 572 ImplicationChecksByTransitivity, 202.0s TimeCoverageRelationStatistics Valid=194, Invalid=2886, Unknown=0, NotChecked=0, Total=3080 [2022-11-03 01:40:55,246 INFO L413 NwaCegarLoop]: 248 mSDtfsCounter, 313 mSDsluCounter, 4866 mSDsCounter, 0 mSdLazyCounter, 5562 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 20.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 323 SdHoareTripleChecker+Valid, 4963 SdHoareTripleChecker+Invalid, 5603 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.3s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 5562 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 22.1s IncrementalHoareTripleChecker+Time [2022-11-03 01:40:55,247 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [323 Valid, 4963 Invalid, 5603 Unknown, 0 Unchecked, 0.3s Time], IncrementalHoareTripleChecker [41 Valid, 5562 Invalid, 0 Unknown, 0 Unchecked, 22.1s Time] [2022-11-03 01:40:55,248 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 371 states. [2022-11-03 01:40:55,466 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 371 to 308. [2022-11-03 01:40:55,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 308 states, 208 states have (on average 1.3798076923076923) internal successors, (287), 210 states have internal predecessors, (287), 74 states have call successors, (74), 26 states have call predecessors, (74), 25 states have return successors, (74), 71 states have call predecessors, (74), 73 states have call successors, (74) [2022-11-03 01:40:55,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 308 states to 308 states and 435 transitions. [2022-11-03 01:40:55,470 INFO L78 Accepts]: Start accepts. Automaton has 308 states and 435 transitions. Word has length 75 [2022-11-03 01:40:55,471 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:40:55,471 INFO L495 AbstractCegarLoop]: Abstraction has 308 states and 435 transitions. [2022-11-03 01:40:55,472 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 28 states have (on average 1.3928571428571428) internal successors, (39), 26 states have internal predecessors, (39), 14 states have call successors, (16), 9 states have call predecessors, (16), 7 states have return successors, (14), 12 states have call predecessors, (14), 12 states have call successors, (14) [2022-11-03 01:40:55,472 INFO L276 IsEmpty]: Start isEmpty. Operand 308 states and 435 transitions. [2022-11-03 01:40:55,477 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2022-11-03 01:40:55,477 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:40:55,477 INFO L195 NwaCegarLoop]: 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] [2022-11-03 01:40:55,507 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff4b14c5-09d7-4ace-825d-60e4a0ba6a5f/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-03 01:40:55,678 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff4b14c5-09d7-4ace-825d-60e4a0ba6a5f/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 01:40:55,678 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 01:40:55,679 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:40:55,679 INFO L85 PathProgramCache]: Analyzing trace with hash 1917925688, now seen corresponding path program 1 times [2022-11-03 01:40:55,679 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:40:55,679 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1896522550] [2022-11-03 01:40:55,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:40:55,680 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:40:55,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:40:55,886 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-11-03 01:40:55,886 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:40:55,887 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1896522550] [2022-11-03 01:40:55,887 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1896522550] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 01:40:55,888 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2131112338] [2022-11-03 01:40:55,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:40:55,888 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 01:40:55,888 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff4b14c5-09d7-4ace-825d-60e4a0ba6a5f/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 01:40:55,891 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff4b14c5-09d7-4ace-825d-60e4a0ba6a5f/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 01:40:55,895 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff4b14c5-09d7-4ace-825d-60e4a0ba6a5f/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-03 01:40:56,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:40:56,180 INFO L263 TraceCheckSpWp]: Trace formula consists of 1046 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-03 01:40:56,184 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 01:40:56,214 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-11-03 01:40:56,215 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 01:40:56,282 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-11-03 01:40:56,282 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2131112338] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 01:40:56,282 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [932278800] [2022-11-03 01:40:56,286 INFO L159 IcfgInterpreter]: Started Sifa with 69 locations of interest [2022-11-03 01:40:56,286 INFO L166 IcfgInterpreter]: Building call graph [2022-11-03 01:40:56,287 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-03 01:40:56,287 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-03 01:40:56,287 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-03 01:41:36,450 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 444 for LOIs [2022-11-03 01:41:36,735 INFO L197 IcfgInterpreter]: Interpreting procedure sendEmail with input of size 259 for LOIs [2022-11-03 01:41:38,302 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailTo with input of size 237 for LOIs [2022-11-03 01:41:38,338 INFO L197 IcfgInterpreter]: Interpreting procedure setClientPrivateKey with input of size 441 for LOIs [2022-11-03 01:41:38,604 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing with input of size 259 for LOIs [2022-11-03 01:42:18,475 INFO L197 IcfgInterpreter]: Interpreting procedure isReadable with input of size 435 for LOIs [2022-11-03 01:42:18,691 INFO L197 IcfgInterpreter]: Interpreting procedure getEmailTo with input of size 251 for LOIs [2022-11-03 01:42:18,730 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailFrom with input of size 444 for LOIs [2022-11-03 01:42:19,391 INFO L197 IcfgInterpreter]: Interpreting procedure isVerified with input of size 251 for LOIs [2022-11-03 01:42:19,430 INFO L197 IcfgInterpreter]: Interpreting procedure isSigned with input of size 435 for LOIs [2022-11-03 01:42:19,658 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-03 01:42:32,357 WARN L234 SmtUtils]: Spent 5.52s on a formula simplification. DAG size of input: 444 DAG size of output: 244 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 01:42:38,317 WARN L234 SmtUtils]: Spent 5.81s on a formula simplification. DAG size of input: 467 DAG size of output: 264 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 01:43:02,076 WARN L234 SmtUtils]: Spent 6.21s on a formula simplification. DAG size of input: 486 DAG size of output: 333 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 01:43:13,023 WARN L234 SmtUtils]: Spent 5.60s on a formula simplification. DAG size of input: 508 DAG size of output: 310 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 01:43:27,275 WARN L234 SmtUtils]: Spent 6.73s on a formula simplification. DAG size of input: 559 DAG size of output: 368 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 01:43:34,500 WARN L234 SmtUtils]: Spent 6.83s on a formula simplification. DAG size of input: 565 DAG size of output: 374 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 01:44:17,819 WARN L234 SmtUtils]: Spent 6.43s on a formula simplification. DAG size of input: 567 DAG size of output: 394 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 01:44:25,324 WARN L234 SmtUtils]: Spent 6.80s on a formula simplification. DAG size of input: 583 DAG size of output: 410 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 01:44:41,113 WARN L234 SmtUtils]: Spent 7.79s on a formula simplification. DAG size of input: 603 DAG size of output: 384 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 01:44:48,182 WARN L234 SmtUtils]: Spent 6.36s on a formula simplification. DAG size of input: 603 DAG size of output: 395 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 01:44:59,254 WARN L234 SmtUtils]: Spent 5.07s on a formula simplification. DAG size of input: 453 DAG size of output: 324 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 01:45:25,800 WARN L234 SmtUtils]: Spent 13.02s on a formula simplification. DAG size of input: 668 DAG size of output: 559 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 01:45:39,851 WARN L234 SmtUtils]: Spent 13.03s on a formula simplification. DAG size of input: 668 DAG size of output: 559 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 01:45:39,854 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [932278800] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:45:39,854 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-11-03 01:45:39,854 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [52] imperfect sequences [4, 4, 4] total 58 [2022-11-03 01:45:39,855 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [354693484] [2022-11-03 01:45:39,855 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:45:39,855 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 53 states [2022-11-03 01:45:39,855 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:45:39,856 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2022-11-03 01:45:39,857 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=182, Invalid=3124, Unknown=0, NotChecked=0, Total=3306 [2022-11-03 01:45:39,857 INFO L87 Difference]: Start difference. First operand 308 states and 435 transitions. Second operand has 53 states, 35 states have (on average 1.2) internal successors, (42), 32 states have internal predecessors, (42), 16 states have call successors, (17), 11 states have call predecessors, (17), 9 states have return successors, (15), 14 states have call predecessors, (15), 14 states have call successors, (15) [2022-11-03 01:46:34,355 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:46:34,355 INFO L93 Difference]: Finished difference Result 563 states and 812 transitions. [2022-11-03 01:46:34,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2022-11-03 01:46:34,356 INFO L78 Accepts]: Start accepts. Automaton has has 53 states, 35 states have (on average 1.2) internal successors, (42), 32 states have internal predecessors, (42), 16 states have call successors, (17), 11 states have call predecessors, (17), 9 states have return successors, (15), 14 states have call predecessors, (15), 14 states have call successors, (15) Word has length 80 [2022-11-03 01:46:34,357 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:46:34,360 INFO L225 Difference]: With dead ends: 563 [2022-11-03 01:46:34,360 INFO L226 Difference]: Without dead ends: 471 [2022-11-03 01:46:34,362 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 250 GetRequests, 186 SyntacticMatches, 0 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 890 ImplicationChecksByTransitivity, 231.4s TimeCoverageRelationStatistics Valid=247, Invalid=4043, Unknown=0, NotChecked=0, Total=4290 [2022-11-03 01:46:34,363 INFO L413 NwaCegarLoop]: 226 mSDtfsCounter, 330 mSDsluCounter, 4341 mSDsCounter, 0 mSdLazyCounter, 5644 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 21.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 342 SdHoareTripleChecker+Valid, 4412 SdHoareTripleChecker+Invalid, 5688 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 5644 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 22.5s IncrementalHoareTripleChecker+Time [2022-11-03 01:46:34,364 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [342 Valid, 4412 Invalid, 5688 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [44 Valid, 5644 Invalid, 0 Unknown, 0 Unchecked, 22.5s Time] [2022-11-03 01:46:34,365 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 471 states. [2022-11-03 01:46:34,663 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 471 to 335. [2022-11-03 01:46:34,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 335 states, 232 states have (on average 1.4267241379310345) internal successors, (331), 234 states have internal predecessors, (331), 75 states have call successors, (75), 28 states have call predecessors, (75), 27 states have return successors, (75), 72 states have call predecessors, (75), 74 states have call successors, (75) [2022-11-03 01:46:34,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 335 states to 335 states and 481 transitions. [2022-11-03 01:46:34,671 INFO L78 Accepts]: Start accepts. Automaton has 335 states and 481 transitions. Word has length 80 [2022-11-03 01:46:34,671 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:46:34,671 INFO L495 AbstractCegarLoop]: Abstraction has 335 states and 481 transitions. [2022-11-03 01:46:34,672 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 53 states, 35 states have (on average 1.2) internal successors, (42), 32 states have internal predecessors, (42), 16 states have call successors, (17), 11 states have call predecessors, (17), 9 states have return successors, (15), 14 states have call predecessors, (15), 14 states have call successors, (15) [2022-11-03 01:46:34,672 INFO L276 IsEmpty]: Start isEmpty. Operand 335 states and 481 transitions. [2022-11-03 01:46:34,674 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2022-11-03 01:46:34,674 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:46:34,674 INFO L195 NwaCegarLoop]: 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, 1, 1, 1, 1] [2022-11-03 01:46:34,700 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff4b14c5-09d7-4ace-825d-60e4a0ba6a5f/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-03 01:46:34,882 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff4b14c5-09d7-4ace-825d-60e4a0ba6a5f/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 01:46:34,883 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 01:46:34,883 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:46:34,883 INFO L85 PathProgramCache]: Analyzing trace with hash -346804167, now seen corresponding path program 1 times [2022-11-03 01:46:34,883 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:46:34,884 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1578272100] [2022-11-03 01:46:34,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:46:34,884 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:46:34,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:46:35,045 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-11-03 01:46:35,047 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:46:35,047 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1578272100] [2022-11-03 01:46:35,047 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1578272100] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 01:46:35,047 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1806115928] [2022-11-03 01:46:35,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:46:35,047 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 01:46:35,048 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff4b14c5-09d7-4ace-825d-60e4a0ba6a5f/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 01:46:35,049 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff4b14c5-09d7-4ace-825d-60e4a0ba6a5f/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 01:46:35,066 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff4b14c5-09d7-4ace-825d-60e4a0ba6a5f/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-03 01:46:35,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:46:35,343 INFO L263 TraceCheckSpWp]: Trace formula consists of 1053 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-03 01:46:35,347 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 01:46:35,376 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-11-03 01:46:35,376 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 01:46:35,451 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-11-03 01:46:35,451 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1806115928] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 01:46:35,451 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1081484704] [2022-11-03 01:46:35,458 INFO L159 IcfgInterpreter]: Started Sifa with 68 locations of interest [2022-11-03 01:46:35,458 INFO L166 IcfgInterpreter]: Building call graph [2022-11-03 01:46:35,459 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-03 01:46:35,459 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-03 01:46:35,460 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-03 01:47:11,807 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 444 for LOIs [2022-11-03 01:47:12,094 INFO L197 IcfgInterpreter]: Interpreting procedure setClientPrivateKey with input of size 442 for LOIs [2022-11-03 01:47:12,369 INFO L197 IcfgInterpreter]: Interpreting procedure sendEmail with input of size 255 for LOIs [2022-11-03 01:47:13,930 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailTo with input of size 233 for LOIs [2022-11-03 01:47:13,965 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing with input of size 255 for LOIs [2022-11-03 01:47:24,194 INFO L197 IcfgInterpreter]: Interpreting procedure isReadable with input of size 247 for LOIs [2022-11-03 01:47:24,227 INFO L197 IcfgInterpreter]: Interpreting procedure getEmailTo with input of size 247 for LOIs [2022-11-03 01:47:24,270 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailFrom with input of size 451 for LOIs [2022-11-03 01:47:24,975 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-03 01:47:37,732 WARN L234 SmtUtils]: Spent 5.58s on a formula simplification. DAG size of input: 444 DAG size of output: 244 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 01:47:43,716 WARN L234 SmtUtils]: Spent 5.83s on a formula simplification. DAG size of input: 467 DAG size of output: 264 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 01:48:09,171 WARN L234 SmtUtils]: Spent 6.22s on a formula simplification. DAG size of input: 486 DAG size of output: 333 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 01:48:20,163 WARN L234 SmtUtils]: Spent 5.62s on a formula simplification. DAG size of input: 508 DAG size of output: 310 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 01:48:32,905 WARN L234 SmtUtils]: Spent 11.44s on a formula simplification. DAG size of input: 584 DAG size of output: 333 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 01:48:45,749 WARN L234 SmtUtils]: Spent 11.49s on a formula simplification. DAG size of input: 585 DAG size of output: 335 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate)