./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/email_spec27_product13.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_b4c92895-09cc-4792-98de-933245bc93af/bin/utaipan-EQgc7hIp5V/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4c92895-09cc-4792-98de-933245bc93af/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_b4c92895-09cc-4792-98de-933245bc93af/bin/utaipan-EQgc7hIp5V/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4c92895-09cc-4792-98de-933245bc93af/bin/utaipan-EQgc7hIp5V/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/email_spec27_product13.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4c92895-09cc-4792-98de-933245bc93af/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_b4c92895-09cc-4792-98de-933245bc93af/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 102266cd9873aec631509424dd889c2e48b781667738cfaa50930481a41b1570 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-aef121e [2021-11-23 02:02:12,887 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-23 02:02:12,889 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-23 02:02:12,944 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-23 02:02:12,945 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-23 02:02:12,949 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-23 02:02:12,951 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-23 02:02:12,955 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-23 02:02:12,958 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-23 02:02:12,964 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-23 02:02:12,965 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-23 02:02:12,967 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-23 02:02:12,968 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-23 02:02:12,970 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-23 02:02:12,973 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-23 02:02:12,978 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-23 02:02:12,983 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-23 02:02:12,985 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-23 02:02:12,987 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-23 02:02:12,995 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-23 02:02:12,997 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-23 02:02:12,998 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-23 02:02:13,001 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-23 02:02:13,003 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-23 02:02:13,012 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-23 02:02:13,012 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-23 02:02:13,012 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-23 02:02:13,014 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-23 02:02:13,015 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-23 02:02:13,017 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-23 02:02:13,017 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-23 02:02:13,018 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-23 02:02:13,021 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-23 02:02:13,022 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-23 02:02:13,023 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-23 02:02:13,024 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-23 02:02:13,024 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-23 02:02:13,025 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-23 02:02:13,025 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-23 02:02:13,026 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-23 02:02:13,027 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-23 02:02:13,028 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4c92895-09cc-4792-98de-933245bc93af/bin/utaipan-EQgc7hIp5V/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-23 02:02:13,076 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-23 02:02:13,078 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-23 02:02:13,079 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-23 02:02:13,079 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-23 02:02:13,080 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-23 02:02:13,080 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-23 02:02:13,081 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-23 02:02:13,081 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-23 02:02:13,081 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-23 02:02:13,081 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-23 02:02:13,083 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-23 02:02:13,083 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-23 02:02:13,083 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-23 02:02:13,084 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-23 02:02:13,084 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-23 02:02:13,084 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-23 02:02:13,084 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-23 02:02:13,085 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-23 02:02:13,086 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-23 02:02:13,086 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-23 02:02:13,086 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-23 02:02:13,086 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-23 02:02:13,087 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-23 02:02:13,087 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-23 02:02:13,087 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-23 02:02:13,087 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-23 02:02:13,089 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-23 02:02:13,089 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-23 02:02:13,089 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-23 02:02:13,090 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-23 02:02:13,090 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-23 02:02:13,090 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-23 02:02:13,090 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 02:02:13,091 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-23 02:02:13,091 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-23 02:02:13,091 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-23 02:02:13,091 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-23 02:02:13,092 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-23 02:02:13,092 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-23 02:02:13,092 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-23 02:02:13,092 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-23 02:02:13,092 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_b4c92895-09cc-4792-98de-933245bc93af/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4c92895-09cc-4792-98de-933245bc93af/bin/utaipan-EQgc7hIp5V Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 102266cd9873aec631509424dd889c2e48b781667738cfaa50930481a41b1570 [2021-11-23 02:02:13,368 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-23 02:02:13,401 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-23 02:02:13,404 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-23 02:02:13,405 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-23 02:02:13,405 INFO L275 PluginConnector]: CDTParser initialized [2021-11-23 02:02:13,406 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4c92895-09cc-4792-98de-933245bc93af/bin/utaipan-EQgc7hIp5V/../../sv-benchmarks/c/product-lines/email_spec27_product13.cil.c [2021-11-23 02:02:13,471 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4c92895-09cc-4792-98de-933245bc93af/bin/utaipan-EQgc7hIp5V/data/fd3a3dab4/2d5f1ea6b83c40c2b02fbe15d0133d71/FLAG6752d5ffc [2021-11-23 02:02:14,097 INFO L306 CDTParser]: Found 1 translation units. [2021-11-23 02:02:14,097 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4c92895-09cc-4792-98de-933245bc93af/sv-benchmarks/c/product-lines/email_spec27_product13.cil.c [2021-11-23 02:02:14,140 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4c92895-09cc-4792-98de-933245bc93af/bin/utaipan-EQgc7hIp5V/data/fd3a3dab4/2d5f1ea6b83c40c2b02fbe15d0133d71/FLAG6752d5ffc [2021-11-23 02:02:14,353 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4c92895-09cc-4792-98de-933245bc93af/bin/utaipan-EQgc7hIp5V/data/fd3a3dab4/2d5f1ea6b83c40c2b02fbe15d0133d71 [2021-11-23 02:02:14,355 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-23 02:02:14,357 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-23 02:02:14,358 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-23 02:02:14,359 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-23 02:02:14,363 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-23 02:02:14,363 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 02:02:14" (1/1) ... [2021-11-23 02:02:14,364 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2c274844 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:02:14, skipping insertion in model container [2021-11-23 02:02:14,364 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 02:02:14" (1/1) ... [2021-11-23 02:02:14,371 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-23 02:02:14,462 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-23 02:02:15,029 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_b4c92895-09cc-4792-98de-933245bc93af/sv-benchmarks/c/product-lines/email_spec27_product13.cil.c[61687,61700] [2021-11-23 02:02:15,033 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 02:02:15,049 INFO L203 MainTranslator]: Completed pre-run [2021-11-23 02:02:15,186 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_b4c92895-09cc-4792-98de-933245bc93af/sv-benchmarks/c/product-lines/email_spec27_product13.cil.c[61687,61700] [2021-11-23 02:02:15,187 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 02:02:15,222 INFO L208 MainTranslator]: Completed translation [2021-11-23 02:02:15,222 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:02:15 WrapperNode [2021-11-23 02:02:15,222 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-23 02:02:15,224 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-23 02:02:15,224 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-23 02:02:15,224 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-23 02:02:15,232 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:02:15" (1/1) ... [2021-11-23 02:02:15,262 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:02:15" (1/1) ... [2021-11-23 02:02:15,358 INFO L137 Inliner]: procedures = 124, calls = 190, calls flagged for inlining = 52, calls inlined = 44, statements flattened = 819 [2021-11-23 02:02:15,359 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-23 02:02:15,360 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-23 02:02:15,362 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-23 02:02:15,362 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-23 02:02:15,372 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:02:15" (1/1) ... [2021-11-23 02:02:15,372 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:02:15" (1/1) ... [2021-11-23 02:02:15,381 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:02:15" (1/1) ... [2021-11-23 02:02:15,381 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:02:15" (1/1) ... [2021-11-23 02:02:15,401 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:02:15" (1/1) ... [2021-11-23 02:02:15,412 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:02:15" (1/1) ... [2021-11-23 02:02:15,417 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:02:15" (1/1) ... [2021-11-23 02:02:15,426 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-23 02:02:15,427 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-23 02:02:15,427 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-23 02:02:15,428 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-23 02:02:15,429 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:02:15" (1/1) ... [2021-11-23 02:02:15,448 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 02:02:15,469 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4c92895-09cc-4792-98de-933245bc93af/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 02:02:15,494 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4c92895-09cc-4792-98de-933245bc93af/bin/utaipan-EQgc7hIp5V/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-23 02:02:15,514 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4c92895-09cc-4792-98de-933245bc93af/bin/utaipan-EQgc7hIp5V/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-23 02:02:15,549 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2021-11-23 02:02:15,549 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2021-11-23 02:02:15,550 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2021-11-23 02:02:15,550 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2021-11-23 02:02:15,550 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable [2021-11-23 02:02:15,550 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable [2021-11-23 02:02:15,550 INFO L130 BoogieDeclarations]: Found specification of procedure createClientKeyringEntry [2021-11-23 02:02:15,550 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientKeyringEntry [2021-11-23 02:02:15,551 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSignKey [2021-11-23 02:02:15,551 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSignKey [2021-11-23 02:02:15,551 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAdd [2021-11-23 02:02:15,551 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAdd [2021-11-23 02:02:15,551 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2021-11-23 02:02:15,551 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailFrom [2021-11-23 02:02:15,552 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailFrom [2021-11-23 02:02:15,552 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2021-11-23 02:02:15,552 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2021-11-23 02:02:15,552 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-23 02:02:15,552 INFO L130 BoogieDeclarations]: Found specification of procedure isSigned [2021-11-23 02:02:15,553 INFO L138 BoogieDeclarations]: Found implementation of procedure isSigned [2021-11-23 02:02:15,553 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringUser [2021-11-23 02:02:15,553 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringUser [2021-11-23 02:02:15,553 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringPublicKey [2021-11-23 02:02:15,553 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringPublicKey [2021-11-23 02:02:15,553 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2021-11-23 02:02:15,554 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2021-11-23 02:02:15,554 INFO L130 BoogieDeclarations]: Found specification of procedure isVerified [2021-11-23 02:02:15,554 INFO L138 BoogieDeclarations]: Found implementation of procedure isVerified [2021-11-23 02:02:15,555 INFO L130 BoogieDeclarations]: Found specification of procedure findPublicKey [2021-11-23 02:02:15,555 INFO L138 BoogieDeclarations]: Found implementation of procedure findPublicKey [2021-11-23 02:02:15,555 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2021-11-23 02:02:15,555 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2021-11-23 02:02:15,555 INFO L130 BoogieDeclarations]: Found specification of procedure setClientPrivateKey [2021-11-23 02:02:15,555 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientPrivateKey [2021-11-23 02:02:15,556 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-23 02:02:15,556 INFO L130 BoogieDeclarations]: Found specification of procedure generateKeyPair [2021-11-23 02:02:15,556 INFO L138 BoogieDeclarations]: Found implementation of procedure generateKeyPair [2021-11-23 02:02:15,556 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-23 02:02:15,556 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-23 02:02:15,790 INFO L236 CfgBuilder]: Building ICFG [2021-11-23 02:02:15,806 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-23 02:02:16,610 INFO L277 CfgBuilder]: Performing block encoding [2021-11-23 02:02:17,037 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-23 02:02:17,037 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-11-23 02:02:17,040 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:02:17 BoogieIcfgContainer [2021-11-23 02:02:17,040 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-23 02:02:17,044 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-23 02:02:17,045 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-23 02:02:17,049 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-23 02:02:17,049 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 02:02:14" (1/3) ... [2021-11-23 02:02:17,050 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@56ec8926 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 02:02:17, skipping insertion in model container [2021-11-23 02:02:17,050 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:02:15" (2/3) ... [2021-11-23 02:02:17,050 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@56ec8926 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 02:02:17, skipping insertion in model container [2021-11-23 02:02:17,051 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:02:17" (3/3) ... [2021-11-23 02:02:17,052 INFO L111 eAbstractionObserver]: Analyzing ICFG email_spec27_product13.cil.c [2021-11-23 02:02:17,062 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-23 02:02:17,062 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-23 02:02:17,125 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-23 02:02:17,131 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 02:02:17,131 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-23 02:02:17,153 INFO L276 IsEmpty]: Start isEmpty. Operand has 144 states, 87 states have (on average 1.367816091954023) internal successors, (119), 89 states have internal predecessors, (119), 38 states have call successors, (38), 17 states have call predecessors, (38), 17 states have return successors, (38), 38 states have call predecessors, (38), 38 states have call successors, (38) [2021-11-23 02:02:17,164 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-11-23 02:02:17,164 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:02:17,165 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:02:17,166 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 02:02:17,171 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:02:17,171 INFO L85 PathProgramCache]: Analyzing trace with hash 1905076130, now seen corresponding path program 1 times [2021-11-23 02:02:17,180 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:02:17,180 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1223502402] [2021-11-23 02:02:17,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:02:17,181 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:02:17,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:02:17,510 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 02:02:17,510 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:02:17,511 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1223502402] [2021-11-23 02:02:17,511 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1223502402] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:02:17,512 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:02:17,512 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-23 02:02:17,514 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1989383258] [2021-11-23 02:02:17,515 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:02:17,520 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-23 02:02:17,520 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:02:17,549 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-23 02:02:17,550 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-23 02:02:17,553 INFO L87 Difference]: Start difference. First operand has 144 states, 87 states have (on average 1.367816091954023) internal successors, (119), 89 states have internal predecessors, (119), 38 states have call successors, (38), 17 states have call predecessors, (38), 17 states have return successors, (38), 38 states have call predecessors, (38), 38 states have call successors, (38) Second operand has 2 states, 2 states have (on average 16.0) internal successors, (32), 2 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 02:02:17,653 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:02:17,653 INFO L93 Difference]: Finished difference Result 205 states and 268 transitions. [2021-11-23 02:02:17,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-23 02:02:17,656 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 16.0) internal successors, (32), 2 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 02:02:17,657 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:02:17,668 INFO L225 Difference]: With dead ends: 205 [2021-11-23 02:02:17,668 INFO L226 Difference]: Without dead ends: 141 [2021-11-23 02:02:17,672 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 02:02:17,676 INFO L933 BasicCegarLoop]: 168 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 168 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 02:02:17,677 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 168 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 02:02:17,696 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141 states. [2021-11-23 02:02:17,730 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141 to 141. [2021-11-23 02:02:17,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 141 states, 85 states have (on average 1.3294117647058823) internal successors, (113), 86 states have internal predecessors, (113), 38 states have call successors, (38), 17 states have call predecessors, (38), 17 states have return successors, (37), 37 states have call predecessors, (37), 37 states have call successors, (37) [2021-11-23 02:02:17,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 188 transitions. [2021-11-23 02:02:17,737 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 188 transitions. Word has length 65 [2021-11-23 02:02:17,738 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:02:17,739 INFO L470 AbstractCegarLoop]: Abstraction has 141 states and 188 transitions. [2021-11-23 02:02:17,739 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 16.0) internal successors, (32), 2 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 02:02:17,739 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 188 transitions. [2021-11-23 02:02:17,744 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2021-11-23 02:02:17,745 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:02:17,745 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, 1] [2021-11-23 02:02:17,745 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-23 02:02:17,746 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 02:02:17,747 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:02:17,747 INFO L85 PathProgramCache]: Analyzing trace with hash 477040369, now seen corresponding path program 1 times [2021-11-23 02:02:17,747 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:02:17,747 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [414908259] [2021-11-23 02:02:17,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:02:17,748 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:02:17,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:02:17,907 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 02:02:17,907 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:02:17,907 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [414908259] [2021-11-23 02:02:17,908 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [414908259] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:02:17,908 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:02:17,908 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 02:02:17,909 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [449114579] [2021-11-23 02:02:17,909 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:02:17,910 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 02:02:17,911 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:02:17,911 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 02:02:17,912 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 02:02:17,912 INFO L87 Difference]: Start difference. First operand 141 states and 188 transitions. Second operand has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 2 states have call successors, (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 02:02:18,024 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:02:18,027 INFO L93 Difference]: Finished difference Result 201 states and 256 transitions. [2021-11-23 02:02:18,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 02:02:18,028 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 2 states have call successors, (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 66 [2021-11-23 02:02:18,029 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:02:18,033 INFO L225 Difference]: With dead ends: 201 [2021-11-23 02:02:18,036 INFO L226 Difference]: Without dead ends: 143 [2021-11-23 02:02:18,037 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 02:02:18,038 INFO L933 BasicCegarLoop]: 165 mSDtfsCounter, 0 mSDsluCounter, 185 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 329 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 02:02:18,038 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 329 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 02:02:18,039 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143 states. [2021-11-23 02:02:18,056 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143 to 143. [2021-11-23 02:02:18,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 143 states, 87 states have (on average 1.3218390804597702) internal successors, (115), 88 states have internal predecessors, (115), 38 states have call successors, (38), 17 states have call predecessors, (38), 17 states have return successors, (37), 37 states have call predecessors, (37), 37 states have call successors, (37) [2021-11-23 02:02:18,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 190 transitions. [2021-11-23 02:02:18,059 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 190 transitions. Word has length 66 [2021-11-23 02:02:18,059 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:02:18,060 INFO L470 AbstractCegarLoop]: Abstraction has 143 states and 190 transitions. [2021-11-23 02:02:18,060 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 2 states have call successors, (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 02:02:18,060 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 190 transitions. [2021-11-23 02:02:18,064 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2021-11-23 02:02:18,064 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:02:18,064 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 02:02:18,064 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-23 02:02:18,065 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 02:02:18,065 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:02:18,066 INFO L85 PathProgramCache]: Analyzing trace with hash -811667588, now seen corresponding path program 1 times [2021-11-23 02:02:18,066 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:02:18,066 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1010509478] [2021-11-23 02:02:18,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:02:18,066 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:02:18,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:02:18,216 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 02:02:18,217 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:02:18,217 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1010509478] [2021-11-23 02:02:18,217 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1010509478] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:02:18,217 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:02:18,218 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 02:02:18,218 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1752699732] [2021-11-23 02:02:18,218 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:02:18,219 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 02:02:18,219 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:02:18,219 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 02:02:18,220 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 02:02:18,220 INFO L87 Difference]: Start difference. First operand 143 states and 190 transitions. Second operand has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 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 02:02:18,327 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:02:18,327 INFO L93 Difference]: Finished difference Result 316 states and 439 transitions. [2021-11-23 02:02:18,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 02:02:18,328 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 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 71 [2021-11-23 02:02:18,328 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:02:18,331 INFO L225 Difference]: With dead ends: 316 [2021-11-23 02:02:18,331 INFO L226 Difference]: Without dead ends: 191 [2021-11-23 02:02:18,333 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 02:02:18,335 INFO L933 BasicCegarLoop]: 182 mSDtfsCounter, 57 mSDsluCounter, 181 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 342 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 02:02:18,335 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [72 Valid, 342 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 02:02:18,337 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 191 states. [2021-11-23 02:02:18,355 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 191 to 186. [2021-11-23 02:02:18,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 186 states, 119 states have (on average 1.411764705882353) internal successors, (168), 120 states have internal predecessors, (168), 49 states have call successors, (49), 17 states have call predecessors, (49), 17 states have return successors, (48), 48 states have call predecessors, (48), 48 states have call successors, (48) [2021-11-23 02:02:18,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 186 states to 186 states and 265 transitions. [2021-11-23 02:02:18,358 INFO L78 Accepts]: Start accepts. Automaton has 186 states and 265 transitions. Word has length 71 [2021-11-23 02:02:18,359 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:02:18,359 INFO L470 AbstractCegarLoop]: Abstraction has 186 states and 265 transitions. [2021-11-23 02:02:18,359 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 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 02:02:18,359 INFO L276 IsEmpty]: Start isEmpty. Operand 186 states and 265 transitions. [2021-11-23 02:02:18,364 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2021-11-23 02:02:18,364 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:02:18,364 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:02:18,364 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-23 02:02:18,365 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 02:02:18,365 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:02:18,365 INFO L85 PathProgramCache]: Analyzing trace with hash 911755670, now seen corresponding path program 1 times [2021-11-23 02:02:18,366 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:02:18,366 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1397564233] [2021-11-23 02:02:18,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:02:18,366 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:02:18,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:02:18,485 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 02:02:18,485 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:02:18,485 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1397564233] [2021-11-23 02:02:18,486 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1397564233] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-23 02:02:18,486 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [434934340] [2021-11-23 02:02:18,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:02:18,487 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 02:02:18,487 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4c92895-09cc-4792-98de-933245bc93af/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 02:02:18,493 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4c92895-09cc-4792-98de-933245bc93af/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 02:02:18,515 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4c92895-09cc-4792-98de-933245bc93af/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-23 02:02:18,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:02:18,811 INFO L263 TraceCheckSpWp]: Trace formula consists of 960 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-23 02:02:18,820 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 02:02:19,035 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 02:02:19,035 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 02:02:19,225 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-11-23 02:02:19,225 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [434934340] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 02:02:19,226 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1610495679] [2021-11-23 02:02:19,259 INFO L159 IcfgInterpreter]: Started Sifa with 61 locations of interest [2021-11-23 02:02:19,259 INFO L166 IcfgInterpreter]: Building call graph [2021-11-23 02:02:19,265 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-23 02:02:19,271 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-23 02:02:19,271 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-23 02:02:50,740 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 439 for LOIs [2021-11-23 02:02:51,021 INFO L197 IcfgInterpreter]: Interpreting procedure setClientPrivateKey with input of size 450 for LOIs [2021-11-23 02:02:51,318 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-23 02:03:46,723 WARN L227 SmtUtils]: Spent 9.69s on a formula simplification. DAG size of input: 583 DAG size of output: 332 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 02:03:52,543 WARN L227 SmtUtils]: Spent 5.35s on a formula simplification. DAG size of input: 570 DAG size of output: 322 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 02:04:01,177 WARN L227 SmtUtils]: Spent 8.14s on a formula simplification. DAG size of input: 570 DAG size of output: 367 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 02:04:10,014 WARN L227 SmtUtils]: Spent 8.50s on a formula simplification. DAG size of input: 568 DAG size of output: 365 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 02:04:15,828 WARN L227 SmtUtils]: Spent 5.51s on a formula simplification. DAG size of input: 566 DAG size of output: 359 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 02:04:15,832 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSifa [1610495679] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:04:15,832 INFO L186 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2021-11-23 02:04:15,832 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [4, 4, 4] total 26 [2021-11-23 02:04:15,833 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1043921375] [2021-11-23 02:04:15,833 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:04:15,834 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-11-23 02:04:15,834 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:04:15,835 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-11-23 02:04:15,836 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=567, Unknown=0, NotChecked=0, Total=650 [2021-11-23 02:04:15,836 INFO L87 Difference]: Start difference. First operand 186 states and 265 transitions. Second operand has 21 states, 16 states have (on average 2.375) internal successors, (38), 15 states have internal predecessors, (38), 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 02:04:22,170 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:04:22,171 INFO L93 Difference]: Finished difference Result 451 states and 691 transitions. [2021-11-23 02:04:22,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-11-23 02:04:22,172 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 16 states have (on average 2.375) internal successors, (38), 15 states have internal predecessors, (38), 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 72 [2021-11-23 02:04:22,173 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:04:22,177 INFO L225 Difference]: With dead ends: 451 [2021-11-23 02:04:22,178 INFO L226 Difference]: Without dead ends: 283 [2021-11-23 02:04:22,180 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 218 GetRequests, 194 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 145 ImplicationChecksByTransitivity, 84.5s TimeCoverageRelationStatistics Valid=83, Invalid=567, Unknown=0, NotChecked=0, Total=650 [2021-11-23 02:04:22,181 INFO L933 BasicCegarLoop]: 209 mSDtfsCounter, 169 mSDsluCounter, 2051 mSDsCounter, 0 mSdLazyCounter, 1622 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 169 SdHoareTripleChecker+Valid, 2225 SdHoareTripleChecker+Invalid, 1635 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 1622 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.1s IncrementalHoareTripleChecker+Time [2021-11-23 02:04:22,182 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [169 Valid, 2225 Invalid, 1635 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [13 Valid, 1622 Invalid, 0 Unknown, 0 Unchecked, 6.1s Time] [2021-11-23 02:04:22,183 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 283 states. [2021-11-23 02:04:22,269 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 283 to 209. [2021-11-23 02:04:22,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 209 states, 141 states have (on average 1.425531914893617) internal successors, (201), 142 states have internal predecessors, (201), 49 states have call successors, (49), 18 states have call predecessors, (49), 18 states have return successors, (48), 48 states have call predecessors, (48), 48 states have call successors, (48) [2021-11-23 02:04:22,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 209 states to 209 states and 298 transitions. [2021-11-23 02:04:22,272 INFO L78 Accepts]: Start accepts. Automaton has 209 states and 298 transitions. Word has length 72 [2021-11-23 02:04:22,273 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:04:22,273 INFO L470 AbstractCegarLoop]: Abstraction has 209 states and 298 transitions. [2021-11-23 02:04:22,273 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 16 states have (on average 2.375) internal successors, (38), 15 states have internal predecessors, (38), 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 02:04:22,274 INFO L276 IsEmpty]: Start isEmpty. Operand 209 states and 298 transitions. [2021-11-23 02:04:22,277 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2021-11-23 02:04:22,278 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:04:22,278 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 02:04:22,316 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4c92895-09cc-4792-98de-933245bc93af/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-23 02:04:22,501 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4c92895-09cc-4792-98de-933245bc93af/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 02:04:22,501 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 02:04:22,502 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:04:22,502 INFO L85 PathProgramCache]: Analyzing trace with hash 1616610466, now seen corresponding path program 1 times [2021-11-23 02:04:22,502 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:04:22,502 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1513107596] [2021-11-23 02:04:22,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:04:22,503 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:04:22,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:04:22,609 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 02:04:22,609 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:04:22,609 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1513107596] [2021-11-23 02:04:22,609 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1513107596] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:04:22,610 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:04:22,610 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 02:04:22,610 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2096904729] [2021-11-23 02:04:22,610 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:04:22,611 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 02:04:22,611 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:04:22,611 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 02:04:22,612 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 02:04:22,612 INFO L87 Difference]: Start difference. First operand 209 states and 298 transitions. Second operand has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 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 02:04:22,794 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:04:22,794 INFO L93 Difference]: Finished difference Result 511 states and 760 transitions. [2021-11-23 02:04:22,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 02:04:22,795 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 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 77 [2021-11-23 02:04:22,795 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:04:22,799 INFO L225 Difference]: With dead ends: 511 [2021-11-23 02:04:22,799 INFO L226 Difference]: Without dead ends: 326 [2021-11-23 02:04:22,800 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 02:04:22,802 INFO L933 BasicCegarLoop]: 184 mSDtfsCounter, 55 mSDsluCounter, 184 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 70 SdHoareTripleChecker+Valid, 346 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 02:04:22,802 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [70 Valid, 346 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 02:04:22,804 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 326 states. [2021-11-23 02:04:22,935 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 326 to 321. [2021-11-23 02:04:22,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 321 states, 228 states have (on average 1.4780701754385965) internal successors, (337), 229 states have internal predecessors, (337), 74 states have call successors, (74), 18 states have call predecessors, (74), 18 states have return successors, (73), 73 states have call predecessors, (73), 73 states have call successors, (73) [2021-11-23 02:04:22,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 321 states to 321 states and 484 transitions. [2021-11-23 02:04:22,939 INFO L78 Accepts]: Start accepts. Automaton has 321 states and 484 transitions. Word has length 77 [2021-11-23 02:04:22,940 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:04:22,941 INFO L470 AbstractCegarLoop]: Abstraction has 321 states and 484 transitions. [2021-11-23 02:04:22,941 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 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 02:04:22,941 INFO L276 IsEmpty]: Start isEmpty. Operand 321 states and 484 transitions. [2021-11-23 02:04:22,945 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2021-11-23 02:04:22,946 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:04:22,947 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, 1] [2021-11-23 02:04:22,947 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-23 02:04:22,947 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 02:04:22,948 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:04:22,948 INFO L85 PathProgramCache]: Analyzing trace with hash 1782444031, now seen corresponding path program 1 times [2021-11-23 02:04:22,948 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:04:22,948 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [615028345] [2021-11-23 02:04:22,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:04:22,949 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:04:22,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:04:23,061 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 02:04:23,061 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:04:23,061 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [615028345] [2021-11-23 02:04:23,062 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [615028345] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-23 02:04:23,062 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1612035093] [2021-11-23 02:04:23,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:04:23,062 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 02:04:23,063 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4c92895-09cc-4792-98de-933245bc93af/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 02:04:23,064 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4c92895-09cc-4792-98de-933245bc93af/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 02:04:23,067 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4c92895-09cc-4792-98de-933245bc93af/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-23 02:04:23,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:04:23,305 INFO L263 TraceCheckSpWp]: Trace formula consists of 990 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-23 02:04:23,310 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 02:04:23,438 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 02:04:23,438 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 02:04:23,586 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 02:04:23,586 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1612035093] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 02:04:23,586 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1130303253] [2021-11-23 02:04:23,590 INFO L159 IcfgInterpreter]: Started Sifa with 65 locations of interest [2021-11-23 02:04:23,590 INFO L166 IcfgInterpreter]: Building call graph [2021-11-23 02:04:23,591 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-23 02:04:23,591 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-23 02:04:23,591 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-23 02:04:58,652 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 444 for LOIs [2021-11-23 02:04:58,931 INFO L197 IcfgInterpreter]: Interpreting procedure setClientPrivateKey with input of size 442 for LOIs [2021-11-23 02:04:59,202 INFO L197 IcfgInterpreter]: Interpreting procedure sendEmail with input of size 246 for LOIs [2021-11-23 02:04:59,981 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing with input of size 241 for LOIs [2021-11-23 02:05:16,841 INFO L197 IcfgInterpreter]: Interpreting procedure isReadable with input of size 441 for LOIs [2021-11-23 02:05:17,085 INFO L197 IcfgInterpreter]: Interpreting procedure getEmailTo with input of size 243 for LOIs [2021-11-23 02:05:17,134 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailFrom with input of size 450 for LOIs [2021-11-23 02:05:17,719 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-23 02:06:26,503 WARN L227 SmtUtils]: Spent 19.46s on a formula simplification. DAG size of input: 591 DAG size of output: 458 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 02:07:20,065 WARN L227 SmtUtils]: Spent 5.83s on a formula simplification. DAG size of input: 594 DAG size of output: 363 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 02:07:25,024 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSifa [1130303253] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:07:25,024 INFO L186 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2021-11-23 02:07:25,024 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [43] imperfect sequences [4, 4, 4] total 49 [2021-11-23 02:07:25,024 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1259112595] [2021-11-23 02:07:25,024 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:07:25,025 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2021-11-23 02:07:25,025 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:07:25,026 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2021-11-23 02:07:25,027 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=152, Invalid=2200, Unknown=0, NotChecked=0, Total=2352 [2021-11-23 02:07:25,028 INFO L87 Difference]: Start difference. First operand 321 states and 484 transitions. Second operand has 44 states, 30 states have (on average 1.3666666666666667) internal successors, (41), 28 states have internal predecessors, (41), 14 states have call successors, (16), 8 states have call predecessors, (16), 6 states have return successors, (14), 12 states have call predecessors, (14), 12 states have call successors, (14) [2021-11-23 02:07:43,618 WARN L227 SmtUtils]: Spent 16.92s on a formula simplification. DAG size of input: 564 DAG size of output: 445 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 02:08:08,454 WARN L227 SmtUtils]: Spent 8.52s on a formula simplification. DAG size of input: 584 DAG size of output: 433 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 02:08:17,374 WARN L227 SmtUtils]: Spent 8.34s on a formula simplification. DAG size of input: 586 DAG size of output: 434 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 02:08:25,755 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:08:25,755 INFO L93 Difference]: Finished difference Result 781 states and 1233 transitions. [2021-11-23 02:08:25,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2021-11-23 02:08:25,756 INFO L78 Accepts]: Start accepts. Automaton has has 44 states, 30 states have (on average 1.3666666666666667) internal successors, (41), 28 states have internal predecessors, (41), 14 states have call successors, (16), 8 states have call predecessors, (16), 6 states have return successors, (14), 12 states have call predecessors, (14), 12 states have call successors, (14) Word has length 78 [2021-11-23 02:08:25,756 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:08:25,761 INFO L225 Difference]: With dead ends: 781 [2021-11-23 02:08:25,761 INFO L226 Difference]: Without dead ends: 523 [2021-11-23 02:08:25,764 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 246 GetRequests, 189 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 709 ImplicationChecksByTransitivity, 176.2s TimeCoverageRelationStatistics Valid=244, Invalid=3178, Unknown=0, NotChecked=0, Total=3422 [2021-11-23 02:08:25,765 INFO L933 BasicCegarLoop]: 188 mSDtfsCounter, 337 mSDsluCounter, 3167 mSDsCounter, 0 mSdLazyCounter, 4188 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 351 SdHoareTripleChecker+Valid, 3305 SdHoareTripleChecker+Invalid, 4240 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 4188 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.4s IncrementalHoareTripleChecker+Time [2021-11-23 02:08:25,765 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [351 Valid, 3305 Invalid, 4240 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [52 Valid, 4188 Invalid, 0 Unknown, 0 Unchecked, 11.4s Time] [2021-11-23 02:08:25,767 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 523 states. [2021-11-23 02:08:25,948 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 523 to 434. [2021-11-23 02:08:25,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 434 states, 321 states have (on average 1.5202492211838006) internal successors, (488), 325 states have internal predecessors, (488), 89 states have call successors, (89), 24 states have call predecessors, (89), 23 states have return successors, (89), 84 states have call predecessors, (89), 88 states have call successors, (89) [2021-11-23 02:08:25,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 434 states to 434 states and 666 transitions. [2021-11-23 02:08:25,953 INFO L78 Accepts]: Start accepts. Automaton has 434 states and 666 transitions. Word has length 78 [2021-11-23 02:08:25,954 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:08:25,954 INFO L470 AbstractCegarLoop]: Abstraction has 434 states and 666 transitions. [2021-11-23 02:08:25,954 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 44 states, 30 states have (on average 1.3666666666666667) internal successors, (41), 28 states have internal predecessors, (41), 14 states have call successors, (16), 8 states have call predecessors, (16), 6 states have return successors, (14), 12 states have call predecessors, (14), 12 states have call successors, (14) [2021-11-23 02:08:25,955 INFO L276 IsEmpty]: Start isEmpty. Operand 434 states and 666 transitions. [2021-11-23 02:08:25,957 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2021-11-23 02:08:25,958 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:08:25,958 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, 1] [2021-11-23 02:08:25,991 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4c92895-09cc-4792-98de-933245bc93af/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-23 02:08:26,180 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4c92895-09cc-4792-98de-933245bc93af/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 02:08:26,180 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 02:08:26,181 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:08:26,181 INFO L85 PathProgramCache]: Analyzing trace with hash 1612043769, now seen corresponding path program 1 times [2021-11-23 02:08:26,181 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:08:26,181 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2035531351] [2021-11-23 02:08:26,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:08:26,181 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:08:26,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:08:26,320 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 02:08:26,320 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:08:26,320 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2035531351] [2021-11-23 02:08:26,321 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2035531351] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-23 02:08:26,321 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1394930017] [2021-11-23 02:08:26,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:08:26,321 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 02:08:26,321 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4c92895-09cc-4792-98de-933245bc93af/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 02:08:26,336 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4c92895-09cc-4792-98de-933245bc93af/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 02:08:26,344 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4c92895-09cc-4792-98de-933245bc93af/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-23 02:08:26,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:08:26,602 INFO L263 TraceCheckSpWp]: Trace formula consists of 1096 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-23 02:08:26,607 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 02:08:26,725 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 02:08:26,725 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 02:08:26,917 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 02:08:26,917 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1394930017] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 02:08:26,917 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [775607705] [2021-11-23 02:08:26,925 INFO L159 IcfgInterpreter]: Started Sifa with 70 locations of interest [2021-11-23 02:08:26,925 INFO L166 IcfgInterpreter]: Building call graph [2021-11-23 02:08:26,926 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-23 02:08:26,930 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-23 02:08:26,930 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-23 02:09:11,831 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 439 for LOIs [2021-11-23 02:09:12,086 INFO L197 IcfgInterpreter]: Interpreting procedure setClientKeyringPublicKey with input of size 234 for LOIs [2021-11-23 02:09:12,192 INFO L197 IcfgInterpreter]: Interpreting procedure setClientKeyringUser with input of size 243 for LOIs [2021-11-23 02:09:12,269 INFO L197 IcfgInterpreter]: Interpreting procedure createClientKeyringEntry with input of size 278 for LOIs [2021-11-23 02:09:12,395 INFO L197 IcfgInterpreter]: Interpreting procedure setClientPrivateKey with input of size 450 for LOIs [2021-11-23 02:09:12,659 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-23 02:10:11,764 WARN L227 SmtUtils]: Spent 13.70s on a formula simplification. DAG size of input: 623 DAG size of output: 447 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 02:10:26,168 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSifa [775607705] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:10:26,168 INFO L186 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2021-11-23 02:10:26,168 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [28] imperfect sequences [4, 4, 4] total 34 [2021-11-23 02:10:26,168 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2014395292] [2021-11-23 02:10:26,168 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:10:26,169 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2021-11-23 02:10:26,169 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:10:26,169 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2021-11-23 02:10:26,170 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=104, Invalid=1018, Unknown=0, NotChecked=0, Total=1122 [2021-11-23 02:10:26,170 INFO L87 Difference]: Start difference. First operand 434 states and 666 transitions. Second operand has 29 states, 19 states have (on average 2.1578947368421053) internal successors, (41), 17 states have internal predecessors, (41), 10 states have call successors, (18), 6 states have call predecessors, (18), 6 states have return successors, (16), 10 states have call predecessors, (16), 10 states have call successors, (16) [2021-11-23 02:10:44,872 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:10:44,873 INFO L93 Difference]: Finished difference Result 813 states and 1276 transitions. [2021-11-23 02:10:44,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-11-23 02:10:44,873 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 19 states have (on average 2.1578947368421053) internal successors, (41), 17 states have internal predecessors, (41), 10 states have call successors, (18), 6 states have call predecessors, (18), 6 states have return successors, (16), 10 states have call predecessors, (16), 10 states have call successors, (16) Word has length 81 [2021-11-23 02:10:44,874 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:10:44,878 INFO L225 Difference]: With dead ends: 813 [2021-11-23 02:10:44,878 INFO L226 Difference]: Without dead ends: 555 [2021-11-23 02:10:44,880 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 249 GetRequests, 210 SyntacticMatches, 3 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 295 ImplicationChecksByTransitivity, 84.4s TimeCoverageRelationStatistics Valid=134, Invalid=1272, Unknown=0, NotChecked=0, Total=1406 [2021-11-23 02:10:44,881 INFO L933 BasicCegarLoop]: 182 mSDtfsCounter, 206 mSDsluCounter, 2766 mSDsCounter, 0 mSdLazyCounter, 3027 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 206 SdHoareTripleChecker+Valid, 2897 SdHoareTripleChecker+Invalid, 3049 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 3027 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.4s IncrementalHoareTripleChecker+Time [2021-11-23 02:10:44,881 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [206 Valid, 2897 Invalid, 3049 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [22 Valid, 3027 Invalid, 0 Unknown, 0 Unchecked, 7.4s Time] [2021-11-23 02:10:44,882 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 555 states. [2021-11-23 02:10:45,067 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 555 to 489. [2021-11-23 02:10:45,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 489 states, 368 states have (on average 1.5081521739130435) internal successors, (555), 374 states have internal predecessors, (555), 94 states have call successors, (94), 27 states have call predecessors, (94), 26 states have return successors, (94), 87 states have call predecessors, (94), 93 states have call successors, (94) [2021-11-23 02:10:45,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 489 states to 489 states and 743 transitions. [2021-11-23 02:10:45,073 INFO L78 Accepts]: Start accepts. Automaton has 489 states and 743 transitions. Word has length 81 [2021-11-23 02:10:45,073 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:10:45,074 INFO L470 AbstractCegarLoop]: Abstraction has 489 states and 743 transitions. [2021-11-23 02:10:45,074 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 19 states have (on average 2.1578947368421053) internal successors, (41), 17 states have internal predecessors, (41), 10 states have call successors, (18), 6 states have call predecessors, (18), 6 states have return successors, (16), 10 states have call predecessors, (16), 10 states have call successors, (16) [2021-11-23 02:10:45,074 INFO L276 IsEmpty]: Start isEmpty. Operand 489 states and 743 transitions. [2021-11-23 02:10:45,077 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2021-11-23 02:10:45,077 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:10:45,078 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, 1, 1, 1, 1, 1, 1] [2021-11-23 02:10:45,105 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4c92895-09cc-4792-98de-933245bc93af/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2021-11-23 02:10:45,292 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4c92895-09cc-4792-98de-933245bc93af/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2021-11-23 02:10:45,292 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 02:10:45,293 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:10:45,293 INFO L85 PathProgramCache]: Analyzing trace with hash 235456908, now seen corresponding path program 1 times [2021-11-23 02:10:45,293 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:10:45,293 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [200040179] [2021-11-23 02:10:45,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:10:45,293 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:10:45,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:10:45,401 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 02:10:45,401 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:10:45,402 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [200040179] [2021-11-23 02:10:45,402 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [200040179] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-23 02:10:45,402 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [860812904] [2021-11-23 02:10:45,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:10:45,402 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 02:10:45,403 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4c92895-09cc-4792-98de-933245bc93af/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 02:10:45,404 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4c92895-09cc-4792-98de-933245bc93af/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 02:10:45,424 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4c92895-09cc-4792-98de-933245bc93af/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-23 02:10:45,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:10:45,636 INFO L263 TraceCheckSpWp]: Trace formula consists of 1004 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-23 02:10:45,640 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 02:10:45,764 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 02:10:45,764 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 02:10:45,917 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 02:10:45,917 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [860812904] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 02:10:45,917 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1057854977] [2021-11-23 02:10:45,926 INFO L159 IcfgInterpreter]: Started Sifa with 70 locations of interest [2021-11-23 02:10:45,926 INFO L166 IcfgInterpreter]: Building call graph [2021-11-23 02:10:45,928 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-23 02:10:45,929 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-23 02:10:45,929 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-23 02:11:20,939 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 439 for LOIs [2021-11-23 02:11:21,241 INFO L197 IcfgInterpreter]: Interpreting procedure setClientPrivateKey with input of size 442 for LOIs [2021-11-23 02:11:21,495 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-23 02:12:15,329 WARN L227 SmtUtils]: Spent 9.79s on a formula simplification. DAG size of input: 589 DAG size of output: 338 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 02:12:24,017 WARN L227 SmtUtils]: Spent 8.23s on a formula simplification. DAG size of input: 569 DAG size of output: 409 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 02:12:31,953 WARN L227 SmtUtils]: Spent 7.68s on a formula simplification. DAG size of input: 569 DAG size of output: 344 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 02:12:39,882 WARN L227 SmtUtils]: Spent 7.65s on a formula simplification. DAG size of input: 567 DAG size of output: 342 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 02:12:47,311 WARN L227 SmtUtils]: Spent 6.88s on a formula simplification. DAG size of input: 567 DAG size of output: 333 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 02:12:54,667 WARN L227 SmtUtils]: Spent 6.74s on a formula simplification. DAG size of input: 565 DAG size of output: 331 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 02:13:00,332 WARN L227 SmtUtils]: Spent 5.36s on a formula simplification. DAG size of input: 562 DAG size of output: 357 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 02:13:02,633 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSifa [1057854977] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:13:02,633 INFO L186 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2021-11-23 02:13:02,633 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [24] imperfect sequences [4, 4, 4] total 30 [2021-11-23 02:13:02,633 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1783070034] [2021-11-23 02:13:02,633 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:13:02,634 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2021-11-23 02:13:02,634 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:13:02,635 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-11-23 02:13:02,635 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=765, Unknown=0, NotChecked=0, Total=870 [2021-11-23 02:13:02,636 INFO L87 Difference]: Start difference. First operand 489 states and 743 transitions. Second operand has 25 states, 19 states have (on average 2.3157894736842106) internal successors, (44), 18 states have internal predecessors, (44), 8 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (15), 8 states have call predecessors, (15), 8 states have call successors, (15) [2021-11-23 02:13:43,475 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:13:43,476 INFO L93 Difference]: Finished difference Result 659 states and 985 transitions. [2021-11-23 02:13:43,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-11-23 02:13:43,482 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 19 states have (on average 2.3157894736842106) internal successors, (44), 18 states have internal predecessors, (44), 8 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (15), 8 states have call predecessors, (15), 8 states have call successors, (15) Word has length 83 [2021-11-23 02:13:43,482 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:13:43,492 INFO L225 Difference]: With dead ends: 659 [2021-11-23 02:13:43,492 INFO L226 Difference]: Without dead ends: 568 [2021-11-23 02:13:43,494 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 260 GetRequests, 223 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 265 ImplicationChecksByTransitivity, 135.3s TimeCoverageRelationStatistics Valid=191, Invalid=1291, Unknown=0, NotChecked=0, Total=1482 [2021-11-23 02:13:43,495 INFO L933 BasicCegarLoop]: 176 mSDtfsCounter, 191 mSDsluCounter, 2288 mSDsCounter, 0 mSdLazyCounter, 1992 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 194 SdHoareTripleChecker+Valid, 2416 SdHoareTripleChecker+Invalid, 2016 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 1992 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.3s IncrementalHoareTripleChecker+Time [2021-11-23 02:13:43,495 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [194 Valid, 2416 Invalid, 2016 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 1992 Invalid, 0 Unknown, 0 Unchecked, 6.3s Time] [2021-11-23 02:13:43,496 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 568 states. [2021-11-23 02:13:43,686 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 568 to 489. [2021-11-23 02:13:43,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 489 states, 368 states have (on average 1.5054347826086956) internal successors, (554), 374 states have internal predecessors, (554), 94 states have call successors, (94), 27 states have call predecessors, (94), 26 states have return successors, (94), 87 states have call predecessors, (94), 93 states have call successors, (94) [2021-11-23 02:13:43,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 489 states to 489 states and 742 transitions. [2021-11-23 02:13:43,692 INFO L78 Accepts]: Start accepts. Automaton has 489 states and 742 transitions. Word has length 83 [2021-11-23 02:13:43,692 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:13:43,692 INFO L470 AbstractCegarLoop]: Abstraction has 489 states and 742 transitions. [2021-11-23 02:13:43,692 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 19 states have (on average 2.3157894736842106) internal successors, (44), 18 states have internal predecessors, (44), 8 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (15), 8 states have call predecessors, (15), 8 states have call successors, (15) [2021-11-23 02:13:43,693 INFO L276 IsEmpty]: Start isEmpty. Operand 489 states and 742 transitions. [2021-11-23 02:13:43,695 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2021-11-23 02:13:43,696 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:13:43,696 INFO L514 BasicCegarLoop]: trace histogram [4, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:13:43,723 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4c92895-09cc-4792-98de-933245bc93af/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2021-11-23 02:13:43,904 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4c92895-09cc-4792-98de-933245bc93af/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 02:13:43,904 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 02:13:43,905 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:13:43,905 INFO L85 PathProgramCache]: Analyzing trace with hash 1607049437, now seen corresponding path program 1 times [2021-11-23 02:13:43,905 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:13:43,905 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [961197787] [2021-11-23 02:13:43,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:13:43,906 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:13:43,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:13:44,004 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 5 proven. 2 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2021-11-23 02:13:44,004 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:13:44,004 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [961197787] [2021-11-23 02:13:44,004 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [961197787] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-23 02:13:44,004 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1871804473] [2021-11-23 02:13:44,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:13:44,005 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 02:13:44,005 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4c92895-09cc-4792-98de-933245bc93af/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 02:13:44,006 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4c92895-09cc-4792-98de-933245bc93af/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 02:13:44,028 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4c92895-09cc-4792-98de-933245bc93af/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-11-23 02:13:44,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:13:44,250 INFO L263 TraceCheckSpWp]: Trace formula consists of 1004 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-23 02:13:44,253 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 02:13:44,412 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2021-11-23 02:13:44,412 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 02:13:44,587 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2021-11-23 02:13:44,587 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1871804473] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 02:13:44,587 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1490043570] [2021-11-23 02:13:44,590 INFO L159 IcfgInterpreter]: Started Sifa with 65 locations of interest [2021-11-23 02:13:44,590 INFO L166 IcfgInterpreter]: Building call graph [2021-11-23 02:13:44,591 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-23 02:13:44,591 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-23 02:13:44,591 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs