./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/email_spec0_product16.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 8393723b Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1a3688b-b3bd-4115-ad80-41df6c7c59a8/bin/utaipan-I9t0OCRTmS/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1a3688b-b3bd-4115-ad80-41df6c7c59a8/bin/utaipan-I9t0OCRTmS/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1a3688b-b3bd-4115-ad80-41df6c7c59a8/bin/utaipan-I9t0OCRTmS/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1a3688b-b3bd-4115-ad80-41df6c7c59a8/bin/utaipan-I9t0OCRTmS/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/email_spec0_product16.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1a3688b-b3bd-4115-ad80-41df6c7c59a8/bin/utaipan-I9t0OCRTmS/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1a3688b-b3bd-4115-ad80-41df6c7c59a8/bin/utaipan-I9t0OCRTmS --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 5ce5fd5bda0c8594f52541a2ff1031f1544bc9165bf7645718c7801e066263fc --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-8393723 [2022-11-19 08:21:12,874 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-19 08:21:12,876 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-19 08:21:12,921 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-19 08:21:12,928 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-19 08:21:12,929 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-19 08:21:12,932 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-19 08:21:12,937 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-19 08:21:12,939 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-19 08:21:12,947 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-19 08:21:12,948 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-19 08:21:12,949 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-19 08:21:12,949 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-19 08:21:12,950 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-19 08:21:12,954 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-19 08:21:12,955 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-19 08:21:12,958 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-19 08:21:12,963 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-19 08:21:12,964 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-19 08:21:12,967 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-19 08:21:12,973 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-19 08:21:12,976 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-19 08:21:12,977 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-19 08:21:12,983 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-19 08:21:12,986 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-19 08:21:12,990 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-19 08:21:12,991 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-19 08:21:12,992 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-19 08:21:12,992 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-19 08:21:12,993 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-19 08:21:12,994 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-19 08:21:12,995 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-19 08:21:12,997 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-19 08:21:12,998 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-19 08:21:13,000 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-19 08:21:13,001 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-19 08:21:13,003 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-19 08:21:13,003 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-19 08:21:13,003 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-19 08:21:13,004 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-19 08:21:13,005 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-19 08:21:13,006 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1a3688b-b3bd-4115-ad80-41df6c7c59a8/bin/utaipan-I9t0OCRTmS/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-11-19 08:21:13,037 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-19 08:21:13,037 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-19 08:21:13,038 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-19 08:21:13,038 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-19 08:21:13,039 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-19 08:21:13,039 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-19 08:21:13,039 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-19 08:21:13,040 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-19 08:21:13,040 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-19 08:21:13,040 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-19 08:21:13,040 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-19 08:21:13,041 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-19 08:21:13,041 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-19 08:21:13,041 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-19 08:21:13,041 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-19 08:21:13,042 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-19 08:21:13,042 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-19 08:21:13,042 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-19 08:21:13,043 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-19 08:21:13,043 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-19 08:21:13,043 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-19 08:21:13,044 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-19 08:21:13,044 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-19 08:21:13,044 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-19 08:21:13,044 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-19 08:21:13,044 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-19 08:21:13,045 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-19 08:21:13,045 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-19 08:21:13,045 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-19 08:21:13,045 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-19 08:21:13,046 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-19 08:21:13,046 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-19 08:21:13,046 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-19 08:21:13,046 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-19 08:21:13,047 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-19 08:21:13,047 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-19 08:21:13,047 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-19 08:21:13,047 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-19 08:21:13,048 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-19 08:21:13,048 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-19 08:21:13,048 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-19 08:21:13,048 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1a3688b-b3bd-4115-ad80-41df6c7c59a8/bin/utaipan-I9t0OCRTmS/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1a3688b-b3bd-4115-ad80-41df6c7c59a8/bin/utaipan-I9t0OCRTmS Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5ce5fd5bda0c8594f52541a2ff1031f1544bc9165bf7645718c7801e066263fc [2022-11-19 08:21:13,291 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-19 08:21:13,312 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-19 08:21:13,314 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-19 08:21:13,316 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-19 08:21:13,334 INFO L275 PluginConnector]: CDTParser initialized [2022-11-19 08:21:13,335 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1a3688b-b3bd-4115-ad80-41df6c7c59a8/bin/utaipan-I9t0OCRTmS/../../sv-benchmarks/c/product-lines/email_spec0_product16.cil.c [2022-11-19 08:21:13,401 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1a3688b-b3bd-4115-ad80-41df6c7c59a8/bin/utaipan-I9t0OCRTmS/data/684af17ad/a8632614852a43a5b69376624091ae1b/FLAG31da134cc [2022-11-19 08:21:14,036 INFO L306 CDTParser]: Found 1 translation units. [2022-11-19 08:21:14,037 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1a3688b-b3bd-4115-ad80-41df6c7c59a8/sv-benchmarks/c/product-lines/email_spec0_product16.cil.c [2022-11-19 08:21:14,060 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1a3688b-b3bd-4115-ad80-41df6c7c59a8/bin/utaipan-I9t0OCRTmS/data/684af17ad/a8632614852a43a5b69376624091ae1b/FLAG31da134cc [2022-11-19 08:21:14,269 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1a3688b-b3bd-4115-ad80-41df6c7c59a8/bin/utaipan-I9t0OCRTmS/data/684af17ad/a8632614852a43a5b69376624091ae1b [2022-11-19 08:21:14,277 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-19 08:21:14,278 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-19 08:21:14,284 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-19 08:21:14,285 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-19 08:21:14,289 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-19 08:21:14,289 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 08:21:14" (1/1) ... [2022-11-19 08:21:14,292 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@64cbbc19 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:21:14, skipping insertion in model container [2022-11-19 08:21:14,292 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 08:21:14" (1/1) ... [2022-11-19 08:21:14,301 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-19 08:21:14,390 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-19 08:21:14,720 WARN L234 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_a1a3688b-b3bd-4115-ad80-41df6c7c59a8/sv-benchmarks/c/product-lines/email_spec0_product16.cil.c[7449,7462] [2022-11-19 08:21:15,093 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-19 08:21:15,106 INFO L203 MainTranslator]: Completed pre-run [2022-11-19 08:21:15,143 WARN L234 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_a1a3688b-b3bd-4115-ad80-41df6c7c59a8/sv-benchmarks/c/product-lines/email_spec0_product16.cil.c[7449,7462] [2022-11-19 08:21:15,219 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-19 08:21:15,248 INFO L208 MainTranslator]: Completed translation [2022-11-19 08:21:15,249 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:21:15 WrapperNode [2022-11-19 08:21:15,249 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-19 08:21:15,250 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-19 08:21:15,250 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-19 08:21:15,250 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-19 08:21:15,258 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:21:15" (1/1) ... [2022-11-19 08:21:15,282 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:21:15" (1/1) ... [2022-11-19 08:21:15,342 INFO L138 Inliner]: procedures = 125, calls = 195, calls flagged for inlining = 55, calls inlined = 50, statements flattened = 971 [2022-11-19 08:21:15,343 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-19 08:21:15,344 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-19 08:21:15,344 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-19 08:21:15,344 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-19 08:21:15,356 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:21:15" (1/1) ... [2022-11-19 08:21:15,356 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:21:15" (1/1) ... [2022-11-19 08:21:15,369 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:21:15" (1/1) ... [2022-11-19 08:21:15,370 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:21:15" (1/1) ... [2022-11-19 08:21:15,394 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:21:15" (1/1) ... [2022-11-19 08:21:15,409 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:21:15" (1/1) ... [2022-11-19 08:21:15,427 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:21:15" (1/1) ... [2022-11-19 08:21:15,431 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:21:15" (1/1) ... [2022-11-19 08:21:15,441 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-19 08:21:15,452 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-19 08:21:15,453 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-19 08:21:15,453 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-19 08:21:15,454 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:21:15" (1/1) ... [2022-11-19 08:21:15,461 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-19 08:21:15,472 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1a3688b-b3bd-4115-ad80-41df6c7c59a8/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 08:21:15,488 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1a3688b-b3bd-4115-ad80-41df6c7c59a8/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-19 08:21:15,501 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1a3688b-b3bd-4115-ad80-41df6c7c59a8/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-19 08:21:15,536 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailEncryptionKey [2022-11-19 08:21:15,537 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailEncryptionKey [2022-11-19 08:21:15,537 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailEncryptionKey [2022-11-19 08:21:15,537 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailEncryptionKey [2022-11-19 08:21:15,537 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2022-11-19 08:21:15,538 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2022-11-19 08:21:15,538 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2022-11-19 08:21:15,538 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2022-11-19 08:21:15,538 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable [2022-11-19 08:21:15,538 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable [2022-11-19 08:21:15,538 INFO L130 BoogieDeclarations]: Found specification of procedure createClientKeyringEntry [2022-11-19 08:21:15,539 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientKeyringEntry [2022-11-19 08:21:15,539 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsEncrypted [2022-11-19 08:21:15,539 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsEncrypted [2022-11-19 08:21:15,539 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAdd [2022-11-19 08:21:15,540 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAdd [2022-11-19 08:21:15,540 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2022-11-19 08:21:15,540 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2022-11-19 08:21:15,540 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2022-11-19 08:21:15,541 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-19 08:21:15,541 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringUser [2022-11-19 08:21:15,541 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringUser [2022-11-19 08:21:15,541 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringPublicKey [2022-11-19 08:21:15,541 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringPublicKey [2022-11-19 08:21:15,541 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2022-11-19 08:21:15,542 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2022-11-19 08:21:15,542 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2022-11-19 08:21:15,542 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2022-11-19 08:21:15,542 INFO L130 BoogieDeclarations]: Found specification of procedure isEncrypted [2022-11-19 08:21:15,543 INFO L138 BoogieDeclarations]: Found implementation of procedure isEncrypted [2022-11-19 08:21:15,543 INFO L130 BoogieDeclarations]: Found specification of procedure setClientPrivateKey [2022-11-19 08:21:15,543 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientPrivateKey [2022-11-19 08:21:15,543 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailTo [2022-11-19 08:21:15,544 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailTo [2022-11-19 08:21:15,544 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-19 08:21:15,544 INFO L130 BoogieDeclarations]: Found specification of procedure generateKeyPair [2022-11-19 08:21:15,544 INFO L138 BoogieDeclarations]: Found implementation of procedure generateKeyPair [2022-11-19 08:21:15,544 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-19 08:21:15,545 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-19 08:21:15,813 INFO L235 CfgBuilder]: Building ICFG [2022-11-19 08:21:15,816 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-19 08:21:16,684 INFO L276 CfgBuilder]: Performing block encoding [2022-11-19 08:21:17,111 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-19 08:21:17,112 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-19 08:21:17,114 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 08:21:17 BoogieIcfgContainer [2022-11-19 08:21:17,115 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-19 08:21:17,117 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-19 08:21:17,117 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-19 08:21:17,121 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-19 08:21:17,121 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 08:21:14" (1/3) ... [2022-11-19 08:21:17,122 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4826474b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 08:21:17, skipping insertion in model container [2022-11-19 08:21:17,122 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:21:15" (2/3) ... [2022-11-19 08:21:17,122 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4826474b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 08:21:17, skipping insertion in model container [2022-11-19 08:21:17,122 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 08:21:17" (3/3) ... [2022-11-19 08:21:17,124 INFO L112 eAbstractionObserver]: Analyzing ICFG email_spec0_product16.cil.c [2022-11-19 08:21:17,143 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-19 08:21:17,144 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-19 08:21:17,196 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-19 08:21:17,202 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@3641e1e5, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-19 08:21:17,203 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-19 08:21:17,210 INFO L276 IsEmpty]: Start isEmpty. Operand has 156 states, 92 states have (on average 1.358695652173913) internal successors, (125), 96 states have internal predecessors, (125), 45 states have call successors, (45), 17 states have call predecessors, (45), 17 states have return successors, (45), 45 states have call predecessors, (45), 45 states have call successors, (45) [2022-11-19 08:21:17,226 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-11-19 08:21:17,226 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:21:17,227 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 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] [2022-11-19 08:21:17,228 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 08:21:17,235 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:21:17,235 INFO L85 PathProgramCache]: Analyzing trace with hash 1766309514, now seen corresponding path program 1 times [2022-11-19 08:21:17,245 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 08:21:17,245 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [458876734] [2022-11-19 08:21:17,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:21:17,246 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 08:21:17,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:21:17,716 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-19 08:21:17,717 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 08:21:17,717 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [458876734] [2022-11-19 08:21:17,718 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [458876734] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 08:21:17,718 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 08:21:17,718 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-19 08:21:17,720 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [147554258] [2022-11-19 08:21:17,720 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 08:21:17,726 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-19 08:21:17,728 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 08:21:17,765 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-19 08:21:17,766 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-19 08:21:17,770 INFO L87 Difference]: Start difference. First operand has 156 states, 92 states have (on average 1.358695652173913) internal successors, (125), 96 states have internal predecessors, (125), 45 states have call successors, (45), 17 states have call predecessors, (45), 17 states have return successors, (45), 45 states have call predecessors, (45), 45 states have call successors, (45) Second operand has 2 states, 2 states have (on average 16.5) internal successors, (33), 2 states have internal predecessors, (33), 2 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-11-19 08:21:17,930 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 08:21:17,931 INFO L93 Difference]: Finished difference Result 229 states and 308 transitions. [2022-11-19 08:21:17,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-19 08:21:17,933 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 16.5) internal successors, (33), 2 states have internal predecessors, (33), 2 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 70 [2022-11-19 08:21:17,934 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 08:21:17,957 INFO L225 Difference]: With dead ends: 229 [2022-11-19 08:21:17,957 INFO L226 Difference]: Without dead ends: 153 [2022-11-19 08:21:17,962 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-19 08:21:17,967 INFO L413 NwaCegarLoop]: 181 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 181 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-19 08:21:17,969 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 181 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-19 08:21:17,991 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153 states. [2022-11-19 08:21:18,065 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153 to 153. [2022-11-19 08:21:18,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 153 states, 90 states have (on average 1.3222222222222222) internal successors, (119), 93 states have internal predecessors, (119), 45 states have call successors, (45), 17 states have call predecessors, (45), 17 states have return successors, (44), 44 states have call predecessors, (44), 44 states have call successors, (44) [2022-11-19 08:21:18,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 208 transitions. [2022-11-19 08:21:18,082 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 208 transitions. Word has length 70 [2022-11-19 08:21:18,084 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 08:21:18,084 INFO L495 AbstractCegarLoop]: Abstraction has 153 states and 208 transitions. [2022-11-19 08:21:18,085 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 16.5) internal successors, (33), 2 states have internal predecessors, (33), 2 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-11-19 08:21:18,086 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 208 transitions. [2022-11-19 08:21:18,091 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2022-11-19 08:21:18,091 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:21:18,092 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 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] [2022-11-19 08:21:18,092 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-19 08:21:18,092 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 08:21:18,093 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:21:18,093 INFO L85 PathProgramCache]: Analyzing trace with hash 594547950, now seen corresponding path program 1 times [2022-11-19 08:21:18,093 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 08:21:18,094 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2031294037] [2022-11-19 08:21:18,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:21:18,094 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 08:21:18,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:21:18,382 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-19 08:21:18,387 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 08:21:18,388 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2031294037] [2022-11-19 08:21:18,388 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2031294037] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 08:21:18,388 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 08:21:18,388 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 08:21:18,389 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [632661782] [2022-11-19 08:21:18,389 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 08:21:18,390 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 08:21:18,391 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 08:21:18,392 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 08:21:18,392 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 08:21:18,392 INFO L87 Difference]: Start difference. First operand 153 states and 208 transitions. Second operand has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 2 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-11-19 08:21:18,553 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 08:21:18,553 INFO L93 Difference]: Finished difference Result 225 states and 296 transitions. [2022-11-19 08:21:18,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 08:21:18,554 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 2 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 71 [2022-11-19 08:21:18,555 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 08:21:18,559 INFO L225 Difference]: With dead ends: 225 [2022-11-19 08:21:18,559 INFO L226 Difference]: Without dead ends: 155 [2022-11-19 08:21:18,562 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 08:21:18,564 INFO L413 NwaCegarLoop]: 178 mSDtfsCounter, 0 mSDsluCounter, 177 mSDsCounter, 0 mSdLazyCounter, 60 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 355 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 60 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-19 08:21:18,564 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 355 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 60 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-19 08:21:18,565 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155 states. [2022-11-19 08:21:18,576 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155 to 155. [2022-11-19 08:21:18,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 155 states, 92 states have (on average 1.315217391304348) internal successors, (121), 95 states have internal predecessors, (121), 45 states have call successors, (45), 17 states have call predecessors, (45), 17 states have return successors, (44), 44 states have call predecessors, (44), 44 states have call successors, (44) [2022-11-19 08:21:18,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 155 states and 210 transitions. [2022-11-19 08:21:18,578 INFO L78 Accepts]: Start accepts. Automaton has 155 states and 210 transitions. Word has length 71 [2022-11-19 08:21:18,579 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 08:21:18,580 INFO L495 AbstractCegarLoop]: Abstraction has 155 states and 210 transitions. [2022-11-19 08:21:18,581 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 2 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-11-19 08:21:18,581 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states and 210 transitions. [2022-11-19 08:21:18,587 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2022-11-19 08:21:18,588 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:21:18,588 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-19 08:21:18,588 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-19 08:21:18,588 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 08:21:18,589 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:21:18,589 INFO L85 PathProgramCache]: Analyzing trace with hash -985806257, now seen corresponding path program 1 times [2022-11-19 08:21:18,589 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 08:21:18,590 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [710341402] [2022-11-19 08:21:18,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:21:18,590 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 08:21:18,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:21:18,777 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-19 08:21:18,777 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 08:21:18,777 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [710341402] [2022-11-19 08:21:18,778 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [710341402] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 08:21:18,778 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 08:21:18,778 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 08:21:18,778 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1605553941] [2022-11-19 08:21:18,778 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 08:21:18,779 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 08:21:18,779 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 08:21:18,779 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 08:21:18,780 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 08:21:18,780 INFO L87 Difference]: Start difference. First operand 155 states and 210 transitions. Second operand has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 2 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-11-19 08:21:18,903 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 08:21:18,903 INFO L93 Difference]: Finished difference Result 340 states and 479 transitions. [2022-11-19 08:21:18,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 08:21:18,904 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 2 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 76 [2022-11-19 08:21:18,904 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 08:21:18,908 INFO L225 Difference]: With dead ends: 340 [2022-11-19 08:21:18,909 INFO L226 Difference]: Without dead ends: 203 [2022-11-19 08:21:18,911 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 08:21:18,918 INFO L413 NwaCegarLoop]: 196 mSDtfsCounter, 57 mSDsluCounter, 173 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 369 SdHoareTripleChecker+Invalid, 62 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-19 08:21:18,920 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [72 Valid, 369 Invalid, 62 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-19 08:21:18,923 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 203 states. [2022-11-19 08:21:18,952 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 203 to 198. [2022-11-19 08:21:18,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 198 states, 124 states have (on average 1.403225806451613) internal successors, (174), 127 states have internal predecessors, (174), 56 states have call successors, (56), 17 states have call predecessors, (56), 17 states have return successors, (55), 55 states have call predecessors, (55), 55 states have call successors, (55) [2022-11-19 08:21:18,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 198 states to 198 states and 285 transitions. [2022-11-19 08:21:18,957 INFO L78 Accepts]: Start accepts. Automaton has 198 states and 285 transitions. Word has length 76 [2022-11-19 08:21:18,959 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 08:21:18,959 INFO L495 AbstractCegarLoop]: Abstraction has 198 states and 285 transitions. [2022-11-19 08:21:18,959 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 2 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-11-19 08:21:18,960 INFO L276 IsEmpty]: Start isEmpty. Operand 198 states and 285 transitions. [2022-11-19 08:21:18,961 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-11-19 08:21:18,961 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:21:18,961 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-19 08:21:18,961 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-19 08:21:18,962 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 08:21:18,962 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:21:18,962 INFO L85 PathProgramCache]: Analyzing trace with hash -1010220095, now seen corresponding path program 1 times [2022-11-19 08:21:18,962 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 08:21:18,963 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [513569069] [2022-11-19 08:21:18,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:21:18,963 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 08:21:19,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:21:19,133 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-19 08:21:19,134 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 08:21:19,134 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [513569069] [2022-11-19 08:21:19,134 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [513569069] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-19 08:21:19,134 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [452536812] [2022-11-19 08:21:19,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:21:19,135 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 08:21:19,135 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1a3688b-b3bd-4115-ad80-41df6c7c59a8/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 08:21:19,138 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1a3688b-b3bd-4115-ad80-41df6c7c59a8/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 08:21:19,156 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1a3688b-b3bd-4115-ad80-41df6c7c59a8/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-19 08:21:19,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:21:19,486 INFO L263 TraceCheckSpWp]: Trace formula consists of 1004 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-19 08:21:19,493 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 08:21:19,578 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-19 08:21:19,578 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 08:21:19,687 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-19 08:21:19,688 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [452536812] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 08:21:19,688 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1330098179] [2022-11-19 08:21:19,714 INFO L159 IcfgInterpreter]: Started Sifa with 62 locations of interest [2022-11-19 08:21:19,714 INFO L166 IcfgInterpreter]: Building call graph [2022-11-19 08:21:19,720 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-19 08:21:19,725 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-19 08:21:19,726 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-19 08:21:47,779 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 439 for LOIs [2022-11-19 08:21:48,072 INFO L197 IcfgInterpreter]: Interpreting procedure setClientPrivateKey with input of size 441 for LOIs [2022-11-19 08:21:48,394 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-19 08:22:16,777 WARN L233 SmtUtils]: Spent 5.81s on a formula simplification. DAG size of input: 464 DAG size of output: 315 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 08:22:32,375 WARN L233 SmtUtils]: Spent 5.74s on a formula simplification. DAG size of input: 498 DAG size of output: 332 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 08:22:41,813 WARN L233 SmtUtils]: Spent 8.17s on a formula simplification. DAG size of input: 508 DAG size of output: 383 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 08:22:49,242 WARN L233 SmtUtils]: Spent 7.15s on a formula simplification. DAG size of input: 564 DAG size of output: 325 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 08:22:58,254 WARN L233 SmtUtils]: Spent 8.72s on a formula simplification. DAG size of input: 566 DAG size of output: 366 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 08:23:07,162 WARN L233 SmtUtils]: Spent 8.58s on a formula simplification. DAG size of input: 568 DAG size of output: 361 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 08:23:15,946 WARN L233 SmtUtils]: Spent 8.47s on a formula simplification. DAG size of input: 564 DAG size of output: 357 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 08:23:17,247 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [1330098179] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 08:23:17,247 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-11-19 08:23:17,248 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [4, 4, 4] total 26 [2022-11-19 08:23:17,248 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1705056928] [2022-11-19 08:23:17,248 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 08:23:17,249 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-11-19 08:23:17,249 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 08:23:17,250 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-11-19 08:23:17,250 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=567, Unknown=0, NotChecked=0, Total=650 [2022-11-19 08:23:17,251 INFO L87 Difference]: Start difference. First operand 198 states and 285 transitions. Second operand has 21 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 7 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (14), 7 states have call predecessors, (14), 7 states have call successors, (14) [2022-11-19 08:23:26,073 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 08:23:26,073 INFO L93 Difference]: Finished difference Result 475 states and 731 transitions. [2022-11-19 08:23:26,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-11-19 08:23:26,074 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 7 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (14), 7 states have call predecessors, (14), 7 states have call successors, (14) Word has length 77 [2022-11-19 08:23:26,075 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 08:23:26,077 INFO L225 Difference]: With dead ends: 475 [2022-11-19 08:23:26,077 INFO L226 Difference]: Without dead ends: 295 [2022-11-19 08:23:26,078 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 233 GetRequests, 209 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 145 ImplicationChecksByTransitivity, 88.8s TimeCoverageRelationStatistics Valid=83, Invalid=567, Unknown=0, NotChecked=0, Total=650 [2022-11-19 08:23:26,079 INFO L413 NwaCegarLoop]: 221 mSDtfsCounter, 140 mSDsluCounter, 2598 mSDsCounter, 0 mSdLazyCounter, 1982 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 140 SdHoareTripleChecker+Valid, 2819 SdHoareTripleChecker+Invalid, 1992 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 1982 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.5s IncrementalHoareTripleChecker+Time [2022-11-19 08:23:26,079 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [140 Valid, 2819 Invalid, 1992 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [10 Valid, 1982 Invalid, 0 Unknown, 0 Unchecked, 8.5s Time] [2022-11-19 08:23:26,080 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 295 states. [2022-11-19 08:23:26,257 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 295 to 221. [2022-11-19 08:23:26,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 221 states, 146 states have (on average 1.417808219178082) internal successors, (207), 149 states have internal predecessors, (207), 56 states have call successors, (56), 18 states have call predecessors, (56), 18 states have return successors, (55), 55 states have call predecessors, (55), 55 states have call successors, (55) [2022-11-19 08:23:26,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 221 states to 221 states and 318 transitions. [2022-11-19 08:23:26,260 INFO L78 Accepts]: Start accepts. Automaton has 221 states and 318 transitions. Word has length 77 [2022-11-19 08:23:26,260 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 08:23:26,260 INFO L495 AbstractCegarLoop]: Abstraction has 221 states and 318 transitions. [2022-11-19 08:23:26,260 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 7 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (14), 7 states have call predecessors, (14), 7 states have call successors, (14) [2022-11-19 08:23:26,261 INFO L276 IsEmpty]: Start isEmpty. Operand 221 states and 318 transitions. [2022-11-19 08:23:26,265 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2022-11-19 08:23:26,266 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:23:26,266 INFO L195 NwaCegarLoop]: trace histogram [4, 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, 1, 1] [2022-11-19 08:23:26,281 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1a3688b-b3bd-4115-ad80-41df6c7c59a8/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-19 08:23:26,474 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1a3688b-b3bd-4115-ad80-41df6c7c59a8/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 08:23:26,474 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 08:23:26,475 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:23:26,475 INFO L85 PathProgramCache]: Analyzing trace with hash 2119366253, now seen corresponding path program 1 times [2022-11-19 08:23:26,475 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 08:23:26,475 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [864706407] [2022-11-19 08:23:26,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:23:26,475 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 08:23:26,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:23:26,606 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-11-19 08:23:26,606 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 08:23:26,606 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [864706407] [2022-11-19 08:23:26,607 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [864706407] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 08:23:26,607 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 08:23:26,607 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 08:23:26,607 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [432058241] [2022-11-19 08:23:26,607 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 08:23:26,608 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 08:23:26,608 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 08:23:26,608 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 08:23:26,608 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 08:23:26,609 INFO L87 Difference]: Start difference. First operand 221 states and 318 transitions. Second operand has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-11-19 08:23:26,982 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 08:23:26,983 INFO L93 Difference]: Finished difference Result 535 states and 800 transitions. [2022-11-19 08:23:26,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 08:23:26,985 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 82 [2022-11-19 08:23:26,985 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 08:23:26,987 INFO L225 Difference]: With dead ends: 535 [2022-11-19 08:23:26,987 INFO L226 Difference]: Without dead ends: 338 [2022-11-19 08:23:26,988 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 08:23:26,989 INFO L413 NwaCegarLoop]: 197 mSDtfsCounter, 55 mSDsluCounter, 175 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 70 SdHoareTripleChecker+Valid, 372 SdHoareTripleChecker+Invalid, 63 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-19 08:23:26,989 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [70 Valid, 372 Invalid, 63 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-19 08:23:26,990 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 338 states. [2022-11-19 08:23:27,202 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 338 to 333. [2022-11-19 08:23:27,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 333 states, 233 states have (on average 1.4721030042918455) internal successors, (343), 236 states have internal predecessors, (343), 81 states have call successors, (81), 18 states have call predecessors, (81), 18 states have return successors, (80), 80 states have call predecessors, (80), 80 states have call successors, (80) [2022-11-19 08:23:27,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 333 states to 333 states and 504 transitions. [2022-11-19 08:23:27,205 INFO L78 Accepts]: Start accepts. Automaton has 333 states and 504 transitions. Word has length 82 [2022-11-19 08:23:27,205 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 08:23:27,205 INFO L495 AbstractCegarLoop]: Abstraction has 333 states and 504 transitions. [2022-11-19 08:23:27,205 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-11-19 08:23:27,206 INFO L276 IsEmpty]: Start isEmpty. Operand 333 states and 504 transitions. [2022-11-19 08:23:27,208 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2022-11-19 08:23:27,208 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:23:27,208 INFO L195 NwaCegarLoop]: trace histogram [4, 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, 1, 1, 1] [2022-11-19 08:23:27,208 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-19 08:23:27,209 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 08:23:27,209 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:23:27,209 INFO L85 PathProgramCache]: Analyzing trace with hash -101972100, now seen corresponding path program 1 times [2022-11-19 08:23:27,209 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 08:23:27,209 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1133022111] [2022-11-19 08:23:27,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:23:27,210 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 08:23:27,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:23:27,343 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-11-19 08:23:27,343 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 08:23:27,344 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1133022111] [2022-11-19 08:23:27,345 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1133022111] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-19 08:23:27,346 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1816466813] [2022-11-19 08:23:27,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:23:27,346 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 08:23:27,346 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1a3688b-b3bd-4115-ad80-41df6c7c59a8/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 08:23:27,348 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1a3688b-b3bd-4115-ad80-41df6c7c59a8/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 08:23:27,372 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1a3688b-b3bd-4115-ad80-41df6c7c59a8/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-19 08:23:27,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:23:27,674 INFO L263 TraceCheckSpWp]: Trace formula consists of 1034 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-19 08:23:27,679 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 08:23:27,704 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-11-19 08:23:27,704 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 08:23:27,781 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-11-19 08:23:27,781 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1816466813] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 08:23:27,782 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [736254415] [2022-11-19 08:23:27,785 INFO L159 IcfgInterpreter]: Started Sifa with 66 locations of interest [2022-11-19 08:23:27,785 INFO L166 IcfgInterpreter]: Building call graph [2022-11-19 08:23:27,786 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-19 08:23:27,786 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-19 08:23:27,786 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-19 08:24:19,179 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 439 for LOIs [2022-11-19 08:24:19,467 INFO L197 IcfgInterpreter]: Interpreting procedure setClientPrivateKey with input of size 450 for LOIs [2022-11-19 08:24:19,832 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-19 08:24:50,712 WARN L233 SmtUtils]: Spent 5.77s on a formula simplification. DAG size of input: 464 DAG size of output: 315 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 08:25:06,402 WARN L233 SmtUtils]: Spent 5.74s on a formula simplification. DAG size of input: 498 DAG size of output: 332 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 08:25:15,962 WARN L233 SmtUtils]: Spent 8.25s on a formula simplification. DAG size of input: 508 DAG size of output: 383 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 08:25:33,709 WARN L233 SmtUtils]: Spent 17.41s on a formula simplification. DAG size of input: 579 DAG size of output: 438 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 08:25:56,068 WARN L233 SmtUtils]: Spent 7.57s on a formula simplification. DAG size of input: 549 DAG size of output: 401 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 08:26:02,471 WARN L233 SmtUtils]: Spent 6.02s on a formula simplification. DAG size of input: 580 DAG size of output: 325 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 08:26:02,672 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [736254415] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 08:26:02,672 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-11-19 08:26:02,672 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [24] imperfect sequences [4, 4, 4] total 30 [2022-11-19 08:26:02,672 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1478949463] [2022-11-19 08:26:02,673 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 08:26:02,674 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-11-19 08:26:02,674 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 08:26:02,674 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-11-19 08:26:02,675 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=110, Invalid=760, Unknown=0, NotChecked=0, Total=870 [2022-11-19 08:26:02,675 INFO L87 Difference]: Start difference. First operand 333 states and 504 transitions. Second operand has 25 states, 19 states have (on average 2.210526315789474) internal successors, (42), 18 states have internal predecessors, (42), 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) [2022-11-19 08:26:20,562 WARN L233 SmtUtils]: Spent 16.03s on a formula simplification. DAG size of input: 476 DAG size of output: 438 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 08:26:26,463 WARN L233 SmtUtils]: Spent 5.68s on a formula simplification. DAG size of input: 537 DAG size of output: 367 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 08:26:33,091 WARN L233 SmtUtils]: Spent 6.41s on a formula simplification. DAG size of input: 538 DAG size of output: 368 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 08:26:39,796 WARN L233 SmtUtils]: Spent 6.34s on a formula simplification. DAG size of input: 536 DAG size of output: 366 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 08:26:46,748 WARN L233 SmtUtils]: Spent 6.63s on a formula simplification. DAG size of input: 537 DAG size of output: 367 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 08:26:53,730 WARN L233 SmtUtils]: Spent 6.57s on a formula simplification. DAG size of input: 535 DAG size of output: 365 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 08:27:02,871 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 08:27:02,871 INFO L93 Difference]: Finished difference Result 748 states and 1187 transitions. [2022-11-19 08:27:02,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-11-19 08:27:02,872 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 19 states have (on average 2.210526315789474) internal successors, (42), 18 states have internal predecessors, (42), 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 [2022-11-19 08:27:02,872 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 08:27:02,877 INFO L225 Difference]: With dead ends: 748 [2022-11-19 08:27:02,878 INFO L226 Difference]: Without dead ends: 478 [2022-11-19 08:27:02,880 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 257 GetRequests, 221 SyntacticMatches, 2 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 262 ImplicationChecksByTransitivity, 151.5s TimeCoverageRelationStatistics Valid=169, Invalid=1091, Unknown=0, NotChecked=0, Total=1260 [2022-11-19 08:27:02,881 INFO L413 NwaCegarLoop]: 191 mSDtfsCounter, 188 mSDsluCounter, 2663 mSDsCounter, 0 mSdLazyCounter, 2362 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 188 SdHoareTripleChecker+Valid, 2854 SdHoareTripleChecker+Invalid, 2380 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 2362 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.7s IncrementalHoareTripleChecker+Time [2022-11-19 08:27:02,883 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [188 Valid, 2854 Invalid, 2380 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [18 Valid, 2362 Invalid, 0 Unknown, 0 Unchecked, 10.7s Time] [2022-11-19 08:27:02,884 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 478 states. [2022-11-19 08:27:03,261 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 478 to 394. [2022-11-19 08:27:03,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 394 states, 290 states have (on average 1.5172413793103448) internal successors, (440), 295 states have internal predecessors, (440), 84 states have call successors, (84), 19 states have call predecessors, (84), 19 states have return successors, (83), 81 states have call predecessors, (83), 83 states have call successors, (83) [2022-11-19 08:27:03,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 394 states to 394 states and 607 transitions. [2022-11-19 08:27:03,264 INFO L78 Accepts]: Start accepts. Automaton has 394 states and 607 transitions. Word has length 83 [2022-11-19 08:27:03,265 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 08:27:03,265 INFO L495 AbstractCegarLoop]: Abstraction has 394 states and 607 transitions. [2022-11-19 08:27:03,265 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 19 states have (on average 2.210526315789474) internal successors, (42), 18 states have internal predecessors, (42), 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) [2022-11-19 08:27:03,265 INFO L276 IsEmpty]: Start isEmpty. Operand 394 states and 607 transitions. [2022-11-19 08:27:03,267 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2022-11-19 08:27:03,268 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:27:03,268 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 08:27:03,279 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1a3688b-b3bd-4115-ad80-41df6c7c59a8/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-19 08:27:03,475 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1a3688b-b3bd-4115-ad80-41df6c7c59a8/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2022-11-19 08:27:03,475 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 08:27:03,475 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:27:03,475 INFO L85 PathProgramCache]: Analyzing trace with hash -228070807, now seen corresponding path program 1 times [2022-11-19 08:27:03,476 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 08:27:03,476 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [453585844] [2022-11-19 08:27:03,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:27:03,476 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 08:27:03,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:27:03,631 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-19 08:27:03,631 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 08:27:03,631 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [453585844] [2022-11-19 08:27:03,632 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [453585844] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-19 08:27:03,632 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1843450423] [2022-11-19 08:27:03,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:27:03,632 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 08:27:03,632 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1a3688b-b3bd-4115-ad80-41df6c7c59a8/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 08:27:03,633 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1a3688b-b3bd-4115-ad80-41df6c7c59a8/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 08:27:03,637 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1a3688b-b3bd-4115-ad80-41df6c7c59a8/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-19 08:27:03,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:27:03,961 INFO L263 TraceCheckSpWp]: Trace formula consists of 1140 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-19 08:27:03,966 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 08:27:03,998 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-19 08:27:03,998 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 08:27:04,075 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-19 08:27:04,075 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1843450423] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 08:27:04,075 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1637943048] [2022-11-19 08:27:04,080 INFO L159 IcfgInterpreter]: Started Sifa with 71 locations of interest [2022-11-19 08:27:04,081 INFO L166 IcfgInterpreter]: Building call graph [2022-11-19 08:27:04,081 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-19 08:27:04,082 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-19 08:27:04,082 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-19 08:27:46,761 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 439 for LOIs [2022-11-19 08:27:47,043 INFO L197 IcfgInterpreter]: Interpreting procedure setClientKeyringPublicKey with input of size 234 for LOIs [2022-11-19 08:27:47,105 INFO L197 IcfgInterpreter]: Interpreting procedure setClientKeyringUser with input of size 243 for LOIs [2022-11-19 08:27:47,169 INFO L197 IcfgInterpreter]: Interpreting procedure createClientKeyringEntry with input of size 233 for LOIs [2022-11-19 08:27:47,237 INFO L197 IcfgInterpreter]: Interpreting procedure setClientPrivateKey with input of size 441 for LOIs [2022-11-19 08:27:47,531 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-19 08:28:15,462 WARN L233 SmtUtils]: Spent 5.80s on a formula simplification. DAG size of input: 464 DAG size of output: 315 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 08:28:30,975 WARN L233 SmtUtils]: Spent 5.66s on a formula simplification. DAG size of input: 498 DAG size of output: 332 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 08:28:40,380 WARN L233 SmtUtils]: Spent 8.17s on a formula simplification. DAG size of input: 508 DAG size of output: 383 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 08:28:56,013 WARN L233 SmtUtils]: Spent 15.32s on a formula simplification. DAG size of input: 619 DAG size of output: 470 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 08:29:08,898 WARN L233 SmtUtils]: Spent 7.51s on a formula simplification. DAG size of input: 545 DAG size of output: 397 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 08:29:21,015 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [1637943048] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 08:29:21,016 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-11-19 08:29:21,016 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [29] imperfect sequences [4, 4, 4] total 35 [2022-11-19 08:29:21,016 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1610276644] [2022-11-19 08:29:21,016 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 08:29:21,017 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2022-11-19 08:29:21,017 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 08:29:21,018 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2022-11-19 08:29:21,018 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=110, Invalid=1080, Unknown=0, NotChecked=0, Total=1190 [2022-11-19 08:29:21,019 INFO L87 Difference]: Start difference. First operand 394 states and 607 transitions. Second operand has 30 states, 19 states have (on average 2.210526315789474) internal successors, (42), 18 states have internal predecessors, (42), 10 states have call successors, (19), 6 states have call predecessors, (19), 6 states have return successors, (17), 10 states have call predecessors, (17), 10 states have call successors, (17) [2022-11-19 08:29:31,542 WARN L233 SmtUtils]: Spent 8.59s on a formula simplification. DAG size of input: 549 DAG size of output: 393 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 08:29:37,873 WARN L233 SmtUtils]: Spent 6.01s on a formula simplification. DAG size of input: 580 DAG size of output: 357 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 08:29:49,814 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 08:29:49,814 INFO L93 Difference]: Finished difference Result 871 states and 1395 transitions. [2022-11-19 08:29:49,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-11-19 08:29:49,815 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 19 states have (on average 2.210526315789474) internal successors, (42), 18 states have internal predecessors, (42), 10 states have call successors, (19), 6 states have call predecessors, (19), 6 states have return successors, (17), 10 states have call predecessors, (17), 10 states have call successors, (17) Word has length 86 [2022-11-19 08:29:49,815 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 08:29:49,819 INFO L225 Difference]: With dead ends: 871 [2022-11-19 08:29:49,819 INFO L226 Difference]: Without dead ends: 601 [2022-11-19 08:29:49,820 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 262 GetRequests, 225 SyntacticMatches, 2 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 294 ImplicationChecksByTransitivity, 108.5s TimeCoverageRelationStatistics Valid=128, Invalid=1204, Unknown=0, NotChecked=0, Total=1332 [2022-11-19 08:29:49,821 INFO L413 NwaCegarLoop]: 194 mSDtfsCounter, 174 mSDsluCounter, 3077 mSDsCounter, 0 mSdLazyCounter, 3064 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 174 SdHoareTripleChecker+Valid, 3271 SdHoareTripleChecker+Invalid, 3079 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 3064 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.8s IncrementalHoareTripleChecker+Time [2022-11-19 08:29:49,821 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [174 Valid, 3271 Invalid, 3079 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [15 Valid, 3064 Invalid, 0 Unknown, 0 Unchecked, 12.8s Time] [2022-11-19 08:29:49,822 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 601 states. [2022-11-19 08:29:50,357 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 601 to 525. [2022-11-19 08:29:50,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 525 states, 413 states have (on average 1.5665859564164648) internal successors, (647), 420 states have internal predecessors, (647), 89 states have call successors, (89), 22 states have call predecessors, (89), 22 states have return successors, (88), 84 states have call predecessors, (88), 88 states have call successors, (88) [2022-11-19 08:29:50,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 525 states to 525 states and 824 transitions. [2022-11-19 08:29:50,368 INFO L78 Accepts]: Start accepts. Automaton has 525 states and 824 transitions. Word has length 86 [2022-11-19 08:29:50,369 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 08:29:50,370 INFO L495 AbstractCegarLoop]: Abstraction has 525 states and 824 transitions. [2022-11-19 08:29:50,370 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 19 states have (on average 2.210526315789474) internal successors, (42), 18 states have internal predecessors, (42), 10 states have call successors, (19), 6 states have call predecessors, (19), 6 states have return successors, (17), 10 states have call predecessors, (17), 10 states have call successors, (17) [2022-11-19 08:29:50,370 INFO L276 IsEmpty]: Start isEmpty. Operand 525 states and 824 transitions. [2022-11-19 08:29:50,373 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2022-11-19 08:29:50,373 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:29:50,373 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1] [2022-11-19 08:29:50,386 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1a3688b-b3bd-4115-ad80-41df6c7c59a8/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-19 08:29:50,581 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1a3688b-b3bd-4115-ad80-41df6c7c59a8/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 08:29:50,581 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 08:29:50,582 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:29:50,582 INFO L85 PathProgramCache]: Analyzing trace with hash -499121030, now seen corresponding path program 1 times [2022-11-19 08:29:50,582 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 08:29:50,582 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1327326895] [2022-11-19 08:29:50,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:29:50,582 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 08:29:50,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:29:50,712 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-19 08:29:50,713 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 08:29:50,713 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1327326895] [2022-11-19 08:29:50,713 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1327326895] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-19 08:29:50,713 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [440652991] [2022-11-19 08:29:50,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:29:50,713 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 08:29:50,714 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1a3688b-b3bd-4115-ad80-41df6c7c59a8/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 08:29:50,715 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1a3688b-b3bd-4115-ad80-41df6c7c59a8/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 08:29:50,740 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1a3688b-b3bd-4115-ad80-41df6c7c59a8/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-19 08:29:51,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:29:51,021 INFO L263 TraceCheckSpWp]: Trace formula consists of 1045 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-19 08:29:51,024 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 08:29:51,059 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-19 08:29:51,060 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 08:29:51,147 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-19 08:29:51,147 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [440652991] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 08:29:51,147 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [993874850] [2022-11-19 08:29:51,155 INFO L159 IcfgInterpreter]: Started Sifa with 70 locations of interest [2022-11-19 08:29:51,155 INFO L166 IcfgInterpreter]: Building call graph [2022-11-19 08:29:51,156 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-19 08:29:51,156 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-19 08:29:51,157 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-19 08:30:42,973 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 444 for LOIs [2022-11-19 08:30:43,314 INFO L197 IcfgInterpreter]: Interpreting procedure setClientPrivateKey with input of size 441 for LOIs [2022-11-19 08:30:43,602 INFO L197 IcfgInterpreter]: Interpreting procedure sendEmail with input of size 465 for LOIs [2022-11-19 08:31:12,486 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing with input of size 463 for LOIs [2022-11-19 08:31:37,309 INFO L197 IcfgInterpreter]: Interpreting procedure isReadable with input of size 247 for LOIs [2022-11-19 08:31:37,987 INFO L197 IcfgInterpreter]: Interpreting procedure isEncrypted with input of size 247 for LOIs [2022-11-19 08:31:38,029 INFO L197 IcfgInterpreter]: Interpreting procedure getEmailTo with input of size 437 for LOIs [2022-11-19 08:31:38,284 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailTo with input of size 447 for LOIs [2022-11-19 08:31:38,961 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailFrom with input of size 448 for LOIs [2022-11-19 08:31:39,635 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-19 08:31:45,142 WARN L233 SmtUtils]: Spent 5.47s on a formula simplification. DAG size of input: 461 DAG size of output: 450 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 08:32:02,713 WARN L233 SmtUtils]: Spent 5.19s on a formula simplification. DAG size of input: 467 DAG size of output: 264 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 08:32:16,707 WARN L233 SmtUtils]: Spent 5.82s on a formula simplification. DAG size of input: 464 DAG size of output: 315 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 08:32:32,520 WARN L233 SmtUtils]: Spent 5.78s on a formula simplification. DAG size of input: 498 DAG size of output: 332 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 08:32:42,082 WARN L233 SmtUtils]: Spent 8.27s on a formula simplification. DAG size of input: 508 DAG size of output: 383 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 08:32:53,345 WARN L233 SmtUtils]: Spent 10.91s on a formula simplification. DAG size of input: 599 DAG size of output: 356 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 08:33:04,596 WARN L233 SmtUtils]: Spent 10.89s on a formula simplification. DAG size of input: 601 DAG size of output: 358 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 08:33:25,216 WARN L233 SmtUtils]: Spent 20.24s on a formula simplification. DAG size of input: 600 DAG size of output: 477 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 08:33:45,793 WARN L233 SmtUtils]: Spent 20.16s on a formula simplification. DAG size of input: 598 DAG size of output: 475 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 08:33:56,968 WARN L233 SmtUtils]: Spent 10.73s on a formula simplification. DAG size of input: 597 DAG size of output: 358 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 08:34:08,397 WARN L233 SmtUtils]: Spent 10.96s on a formula simplification. DAG size of input: 595 DAG size of output: 356 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 08:34:19,413 WARN L233 SmtUtils]: Spent 10.56s on a formula simplification. DAG size of input: 594 DAG size of output: 357 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 08:34:28,323 WARN L233 SmtUtils]: Spent 8.45s on a formula simplification. DAG size of input: 574 DAG size of output: 406 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 08:34:34,672 WARN L233 SmtUtils]: Spent 5.90s on a formula simplification. DAG size of input: 576 DAG size of output: 344 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 08:34:40,957 WARN L233 SmtUtils]: Spent 5.83s on a formula simplification. DAG size of input: 572 DAG size of output: 340 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate)