./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/email_spec11_product26.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6b4ec56b Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7279b0a-e984-4379-8b06-301e548d9f3b/bin/utaipan-6cKwYrpEi9/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7279b0a-e984-4379-8b06-301e548d9f3b/bin/utaipan-6cKwYrpEi9/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7279b0a-e984-4379-8b06-301e548d9f3b/bin/utaipan-6cKwYrpEi9/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7279b0a-e984-4379-8b06-301e548d9f3b/bin/utaipan-6cKwYrpEi9/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/email_spec11_product26.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7279b0a-e984-4379-8b06-301e548d9f3b/bin/utaipan-6cKwYrpEi9/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7279b0a-e984-4379-8b06-301e548d9f3b/bin/utaipan-6cKwYrpEi9 --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 f29a19c3efa542dcf2ceb090606fb32840c0b6e985b77630bcd852a7818d8a39 --- 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-6b4ec56 [2022-11-20 21:19:56,052 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-20 21:19:56,054 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-20 21:19:56,080 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-20 21:19:56,081 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-20 21:19:56,082 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-20 21:19:56,083 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-20 21:19:56,084 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-20 21:19:56,086 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-20 21:19:56,087 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-20 21:19:56,088 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-20 21:19:56,089 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-20 21:19:56,089 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-20 21:19:56,090 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-20 21:19:56,091 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-20 21:19:56,092 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-20 21:19:56,093 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-20 21:19:56,102 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-20 21:19:56,105 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-20 21:19:56,112 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-20 21:19:56,114 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-20 21:19:56,115 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-20 21:19:56,116 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-20 21:19:56,117 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-20 21:19:56,120 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-20 21:19:56,120 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-20 21:19:56,121 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-20 21:19:56,121 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-20 21:19:56,122 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-20 21:19:56,123 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-20 21:19:56,123 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-20 21:19:56,124 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-20 21:19:56,125 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-20 21:19:56,125 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-20 21:19:56,127 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-20 21:19:56,127 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-20 21:19:56,128 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-20 21:19:56,128 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-20 21:19:56,128 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-20 21:19:56,129 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-20 21:19:56,130 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-20 21:19:56,131 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7279b0a-e984-4379-8b06-301e548d9f3b/bin/utaipan-6cKwYrpEi9/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-11-20 21:19:56,154 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-20 21:19:56,154 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-20 21:19:56,155 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-20 21:19:56,155 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-20 21:19:56,156 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-20 21:19:56,156 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-20 21:19:56,156 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-20 21:19:56,156 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-20 21:19:56,157 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-20 21:19:56,157 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-20 21:19:56,157 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-20 21:19:56,157 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-20 21:19:56,157 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-20 21:19:56,157 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-20 21:19:56,158 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-20 21:19:56,158 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-20 21:19:56,158 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-20 21:19:56,158 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-20 21:19:56,159 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-20 21:19:56,159 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-20 21:19:56,159 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-20 21:19:56,159 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-20 21:19:56,159 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-20 21:19:56,159 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-20 21:19:56,160 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-20 21:19:56,160 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-20 21:19:56,160 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-20 21:19:56,160 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-20 21:19:56,160 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-20 21:19:56,160 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-20 21:19:56,161 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-20 21:19:56,161 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-20 21:19:56,161 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 21:19:56,161 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-20 21:19:56,161 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-20 21:19:56,161 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-20 21:19:56,162 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-20 21:19:56,162 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-20 21:19:56,162 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-20 21:19:56,162 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-20 21:19:56,162 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-20 21:19:56,162 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_a7279b0a-e984-4379-8b06-301e548d9f3b/bin/utaipan-6cKwYrpEi9/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7279b0a-e984-4379-8b06-301e548d9f3b/bin/utaipan-6cKwYrpEi9 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f29a19c3efa542dcf2ceb090606fb32840c0b6e985b77630bcd852a7818d8a39 [2022-11-20 21:19:56,402 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-20 21:19:56,427 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-20 21:19:56,429 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-20 21:19:56,430 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-20 21:19:56,431 INFO L275 PluginConnector]: CDTParser initialized [2022-11-20 21:19:56,432 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7279b0a-e984-4379-8b06-301e548d9f3b/bin/utaipan-6cKwYrpEi9/../../sv-benchmarks/c/product-lines/email_spec11_product26.cil.c [2022-11-20 21:19:59,533 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-20 21:19:59,879 INFO L351 CDTParser]: Found 1 translation units. [2022-11-20 21:19:59,880 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7279b0a-e984-4379-8b06-301e548d9f3b/sv-benchmarks/c/product-lines/email_spec11_product26.cil.c [2022-11-20 21:19:59,911 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7279b0a-e984-4379-8b06-301e548d9f3b/bin/utaipan-6cKwYrpEi9/data/61583859c/b88aa3643a1a484e9afa233d74205554/FLAG359e47a67 [2022-11-20 21:19:59,926 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7279b0a-e984-4379-8b06-301e548d9f3b/bin/utaipan-6cKwYrpEi9/data/61583859c/b88aa3643a1a484e9afa233d74205554 [2022-11-20 21:19:59,933 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-20 21:19:59,935 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-20 21:19:59,942 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-20 21:19:59,942 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-20 21:19:59,946 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-20 21:19:59,947 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 09:19:59" (1/1) ... [2022-11-20 21:19:59,948 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@13e2414a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:19:59, skipping insertion in model container [2022-11-20 21:19:59,949 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 09:19:59" (1/1) ... [2022-11-20 21:19:59,957 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-20 21:20:00,044 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-20 21:20:00,704 WARN L237 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_a7279b0a-e984-4379-8b06-301e548d9f3b/sv-benchmarks/c/product-lines/email_spec11_product26.cil.c[63627,63640] [2022-11-20 21:20:00,717 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 21:20:00,734 INFO L203 MainTranslator]: Completed pre-run [2022-11-20 21:20:00,921 WARN L237 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_a7279b0a-e984-4379-8b06-301e548d9f3b/sv-benchmarks/c/product-lines/email_spec11_product26.cil.c[63627,63640] [2022-11-20 21:20:00,922 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 21:20:00,960 INFO L208 MainTranslator]: Completed translation [2022-11-20 21:20:00,960 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:20:00 WrapperNode [2022-11-20 21:20:00,961 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-20 21:20:00,962 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-20 21:20:00,962 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-20 21:20:00,962 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-20 21:20:00,969 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:20:00" (1/1) ... [2022-11-20 21:20:01,010 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:20:00" (1/1) ... [2022-11-20 21:20:01,054 INFO L138 Inliner]: procedures = 131, calls = 224, calls flagged for inlining = 59, calls inlined = 56, statements flattened = 1089 [2022-11-20 21:20:01,055 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-20 21:20:01,055 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-20 21:20:01,055 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-20 21:20:01,056 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-20 21:20:01,065 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:20:00" (1/1) ... [2022-11-20 21:20:01,065 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:20:00" (1/1) ... [2022-11-20 21:20:01,069 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:20:00" (1/1) ... [2022-11-20 21:20:01,070 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:20:00" (1/1) ... [2022-11-20 21:20:01,086 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:20:00" (1/1) ... [2022-11-20 21:20:01,094 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:20:00" (1/1) ... [2022-11-20 21:20:01,099 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:20:00" (1/1) ... [2022-11-20 21:20:01,103 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:20:00" (1/1) ... [2022-11-20 21:20:01,110 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-20 21:20:01,110 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-20 21:20:01,111 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-20 21:20:01,111 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-20 21:20:01,112 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:20:00" (1/1) ... [2022-11-20 21:20:01,118 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 21:20:01,130 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7279b0a-e984-4379-8b06-301e548d9f3b/bin/utaipan-6cKwYrpEi9/z3 [2022-11-20 21:20:01,143 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7279b0a-e984-4379-8b06-301e548d9f3b/bin/utaipan-6cKwYrpEi9/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-20 21:20:01,154 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7279b0a-e984-4379-8b06-301e548d9f3b/bin/utaipan-6cKwYrpEi9/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-20 21:20:01,181 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookSize [2022-11-20 21:20:01,181 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookSize [2022-11-20 21:20:01,181 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailEncryptionKey [2022-11-20 21:20:01,182 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailEncryptionKey [2022-11-20 21:20:01,182 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookAddress [2022-11-20 21:20:01,182 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookAddress [2022-11-20 21:20:01,182 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailEncryptionKey [2022-11-20 21:20:01,182 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailEncryptionKey [2022-11-20 21:20:01,182 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2022-11-20 21:20:01,183 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2022-11-20 21:20:01,183 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing__wrappee__AutoResponder [2022-11-20 21:20:01,183 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing__wrappee__AutoResponder [2022-11-20 21:20:01,183 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2022-11-20 21:20:01,183 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2022-11-20 21:20:01,184 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable [2022-11-20 21:20:01,184 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable [2022-11-20 21:20:01,184 INFO L130 BoogieDeclarations]: Found specification of procedure createClientKeyringEntry [2022-11-20 21:20:01,184 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientKeyringEntry [2022-11-20 21:20:01,184 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsEncrypted [2022-11-20 21:20:01,184 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsEncrypted [2022-11-20 21:20:01,185 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAdd [2022-11-20 21:20:01,185 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAdd [2022-11-20 21:20:01,185 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2022-11-20 21:20:01,185 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailFrom [2022-11-20 21:20:01,185 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailFrom [2022-11-20 21:20:01,185 INFO L130 BoogieDeclarations]: Found specification of procedure queue [2022-11-20 21:20:01,186 INFO L138 BoogieDeclarations]: Found implementation of procedure queue [2022-11-20 21:20:01,186 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2022-11-20 21:20:01,186 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2022-11-20 21:20:01,186 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-20 21:20:01,186 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookSize [2022-11-20 21:20:01,187 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookSize [2022-11-20 21:20:01,187 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringUser [2022-11-20 21:20:01,187 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringUser [2022-11-20 21:20:01,187 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringPublicKey [2022-11-20 21:20:01,187 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringPublicKey [2022-11-20 21:20:01,187 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2022-11-20 21:20:01,188 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2022-11-20 21:20:01,188 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2022-11-20 21:20:01,188 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2022-11-20 21:20:01,188 INFO L130 BoogieDeclarations]: Found specification of procedure isEncrypted [2022-11-20 21:20:01,188 INFO L138 BoogieDeclarations]: Found implementation of procedure isEncrypted [2022-11-20 21:20:01,188 INFO L130 BoogieDeclarations]: Found specification of procedure setClientPrivateKey [2022-11-20 21:20:01,189 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientPrivateKey [2022-11-20 21:20:01,189 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailTo [2022-11-20 21:20:01,189 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailTo [2022-11-20 21:20:01,189 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-20 21:20:01,189 INFO L130 BoogieDeclarations]: Found specification of procedure generateKeyPair [2022-11-20 21:20:01,189 INFO L138 BoogieDeclarations]: Found implementation of procedure generateKeyPair [2022-11-20 21:20:01,190 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookAddress [2022-11-20 21:20:01,190 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookAddress [2022-11-20 21:20:01,190 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-20 21:20:01,190 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-20 21:20:01,395 INFO L235 CfgBuilder]: Building ICFG [2022-11-20 21:20:01,397 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-20 21:20:02,412 INFO L276 CfgBuilder]: Performing block encoding [2022-11-20 21:20:03,020 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-20 21:20:03,021 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-20 21:20:03,024 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 09:20:03 BoogieIcfgContainer [2022-11-20 21:20:03,025 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-20 21:20:03,029 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-20 21:20:03,029 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-20 21:20:03,033 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-20 21:20:03,033 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 09:19:59" (1/3) ... [2022-11-20 21:20:03,036 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@a514adc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 09:20:03, skipping insertion in model container [2022-11-20 21:20:03,037 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:20:00" (2/3) ... [2022-11-20 21:20:03,039 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@a514adc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 09:20:03, skipping insertion in model container [2022-11-20 21:20:03,039 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 09:20:03" (3/3) ... [2022-11-20 21:20:03,043 INFO L112 eAbstractionObserver]: Analyzing ICFG email_spec11_product26.cil.c [2022-11-20 21:20:03,063 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-20 21:20:03,063 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-20 21:20:03,141 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-20 21:20:03,151 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;@6043640, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-20 21:20:03,152 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-20 21:20:03,160 INFO L276 IsEmpty]: Start isEmpty. Operand has 201 states, 113 states have (on average 1.3097345132743363) internal successors, (148), 118 states have internal predecessors, (148), 62 states have call successors, (62), 24 states have call predecessors, (62), 24 states have return successors, (62), 61 states have call predecessors, (62), 62 states have call successors, (62) [2022-11-20 21:20:03,183 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2022-11-20 21:20:03,184 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 21:20:03,185 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 21:20:03,185 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 21:20:03,193 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 21:20:03,194 INFO L85 PathProgramCache]: Analyzing trace with hash 120790459, now seen corresponding path program 1 times [2022-11-20 21:20:03,206 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 21:20:03,207 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [69073303] [2022-11-20 21:20:03,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 21:20:03,208 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 21:20:03,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 21:20:03,632 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-11-20 21:20:03,633 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 21:20:03,633 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [69073303] [2022-11-20 21:20:03,634 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [69073303] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 21:20:03,635 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 21:20:03,635 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-20 21:20:03,637 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [151604303] [2022-11-20 21:20:03,637 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 21:20:03,643 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-20 21:20:03,645 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 21:20:03,690 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-20 21:20:03,692 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-20 21:20:03,695 INFO L87 Difference]: Start difference. First operand has 201 states, 113 states have (on average 1.3097345132743363) internal successors, (148), 118 states have internal predecessors, (148), 62 states have call successors, (62), 24 states have call predecessors, (62), 24 states have return successors, (62), 61 states have call predecessors, (62), 62 states have call successors, (62) Second operand has 2 states, 2 states have (on average 19.5) internal successors, (39), 2 states have internal predecessors, (39), 2 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-11-20 21:20:03,884 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 21:20:03,884 INFO L93 Difference]: Finished difference Result 310 states and 415 transitions. [2022-11-20 21:20:03,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-20 21:20:03,888 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 19.5) internal successors, (39), 2 states have internal predecessors, (39), 2 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 84 [2022-11-20 21:20:03,889 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 21:20:03,900 INFO L225 Difference]: With dead ends: 310 [2022-11-20 21:20:03,900 INFO L226 Difference]: Without dead ends: 198 [2022-11-20 21:20:03,905 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 [2022-11-20 21:20:03,910 INFO L413 NwaCegarLoop]: 228 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 228 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 21:20:03,912 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 228 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 21:20:03,931 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 198 states. [2022-11-20 21:20:03,967 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 198 to 198. [2022-11-20 21:20:03,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 198 states, 111 states have (on average 1.2792792792792793) internal successors, (142), 115 states have internal predecessors, (142), 62 states have call successors, (62), 24 states have call predecessors, (62), 24 states have return successors, (61), 60 states have call predecessors, (61), 61 states have call successors, (61) [2022-11-20 21:20:03,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 198 states to 198 states and 265 transitions. [2022-11-20 21:20:03,975 INFO L78 Accepts]: Start accepts. Automaton has 198 states and 265 transitions. Word has length 84 [2022-11-20 21:20:03,976 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 21:20:03,977 INFO L495 AbstractCegarLoop]: Abstraction has 198 states and 265 transitions. [2022-11-20 21:20:03,977 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 19.5) internal successors, (39), 2 states have internal predecessors, (39), 2 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-11-20 21:20:03,977 INFO L276 IsEmpty]: Start isEmpty. Operand 198 states and 265 transitions. [2022-11-20 21:20:03,981 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-11-20 21:20:03,981 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 21:20:03,981 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 21:20:03,982 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-20 21:20:03,982 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 21:20:03,983 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 21:20:03,983 INFO L85 PathProgramCache]: Analyzing trace with hash 458755224, now seen corresponding path program 1 times [2022-11-20 21:20:03,983 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 21:20:03,984 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [180000448] [2022-11-20 21:20:03,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 21:20:03,984 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 21:20:04,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 21:20:04,311 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-20 21:20:04,312 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 21:20:04,313 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [180000448] [2022-11-20 21:20:04,314 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [180000448] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 21:20:04,314 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 21:20:04,314 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 21:20:04,314 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1809274044] [2022-11-20 21:20:04,315 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 21:20:04,316 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 21:20:04,318 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 21:20:04,319 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 21:20:04,319 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 21:20:04,319 INFO L87 Difference]: Start difference. First operand 198 states and 265 transitions. Second operand has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-11-20 21:20:04,510 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 21:20:04,511 INFO L93 Difference]: Finished difference Result 306 states and 400 transitions. [2022-11-20 21:20:04,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 21:20:04,514 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 74 [2022-11-20 21:20:04,515 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 21:20:04,517 INFO L225 Difference]: With dead ends: 306 [2022-11-20 21:20:04,519 INFO L226 Difference]: Without dead ends: 200 [2022-11-20 21:20:04,521 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 [2022-11-20 21:20:04,527 INFO L413 NwaCegarLoop]: 225 mSDtfsCounter, 0 mSDsluCounter, 224 mSDsCounter, 0 mSdLazyCounter, 80 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 449 SdHoareTripleChecker+Invalid, 80 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 80 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-20 21:20:04,527 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 449 Invalid, 80 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 80 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-20 21:20:04,530 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 200 states. [2022-11-20 21:20:04,582 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 200 to 200. [2022-11-20 21:20:04,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 200 states, 113 states have (on average 1.2743362831858407) internal successors, (144), 117 states have internal predecessors, (144), 62 states have call successors, (62), 24 states have call predecessors, (62), 24 states have return successors, (61), 60 states have call predecessors, (61), 61 states have call successors, (61) [2022-11-20 21:20:04,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 200 states to 200 states and 267 transitions. [2022-11-20 21:20:04,590 INFO L78 Accepts]: Start accepts. Automaton has 200 states and 267 transitions. Word has length 74 [2022-11-20 21:20:04,590 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 21:20:04,590 INFO L495 AbstractCegarLoop]: Abstraction has 200 states and 267 transitions. [2022-11-20 21:20:04,591 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-11-20 21:20:04,591 INFO L276 IsEmpty]: Start isEmpty. Operand 200 states and 267 transitions. [2022-11-20 21:20:04,594 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-11-20 21:20:04,599 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 21:20:04,599 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, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 21:20:04,600 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-20 21:20:04,600 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 21:20:04,601 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 21:20:04,606 INFO L85 PathProgramCache]: Analyzing trace with hash 1350248299, now seen corresponding path program 1 times [2022-11-20 21:20:04,606 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 21:20:04,606 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1597928523] [2022-11-20 21:20:04,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 21:20:04,607 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 21:20:04,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 21:20:04,797 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-20 21:20:04,798 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 21:20:04,798 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1597928523] [2022-11-20 21:20:04,799 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1597928523] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 21:20:04,799 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 21:20:04,801 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 21:20:04,801 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [940768947] [2022-11-20 21:20:04,801 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 21:20:04,802 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 21:20:04,803 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 21:20:04,803 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 21:20:04,804 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 21:20:04,804 INFO L87 Difference]: Start difference. First operand 200 states and 267 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, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-11-20 21:20:04,974 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 21:20:04,974 INFO L93 Difference]: Finished difference Result 435 states and 601 transitions. [2022-11-20 21:20:04,974 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 21:20:04,975 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, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 79 [2022-11-20 21:20:04,975 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 21:20:04,982 INFO L225 Difference]: With dead ends: 435 [2022-11-20 21:20:04,982 INFO L226 Difference]: Without dead ends: 253 [2022-11-20 21:20:04,988 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 [2022-11-20 21:20:04,991 INFO L413 NwaCegarLoop]: 245 mSDtfsCounter, 59 mSDsluCounter, 219 mSDsCounter, 0 mSdLazyCounter, 83 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 77 SdHoareTripleChecker+Valid, 464 SdHoareTripleChecker+Invalid, 84 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 83 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 21:20:04,992 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [77 Valid, 464 Invalid, 84 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 83 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 21:20:04,995 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 253 states. [2022-11-20 21:20:05,019 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 253 to 248. [2022-11-20 21:20:05,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 248 states, 147 states have (on average 1.3537414965986394) internal successors, (199), 151 states have internal predecessors, (199), 76 states have call successors, (76), 24 states have call predecessors, (76), 24 states have return successors, (75), 74 states have call predecessors, (75), 75 states have call successors, (75) [2022-11-20 21:20:05,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 248 states to 248 states and 350 transitions. [2022-11-20 21:20:05,022 INFO L78 Accepts]: Start accepts. Automaton has 248 states and 350 transitions. Word has length 79 [2022-11-20 21:20:05,022 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 21:20:05,022 INFO L495 AbstractCegarLoop]: Abstraction has 248 states and 350 transitions. [2022-11-20 21:20:05,023 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, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-11-20 21:20:05,023 INFO L276 IsEmpty]: Start isEmpty. Operand 248 states and 350 transitions. [2022-11-20 21:20:05,025 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2022-11-20 21:20:05,026 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 21:20:05,026 INFO L195 NwaCegarLoop]: trace histogram [3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 21:20:05,026 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-20 21:20:05,027 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 21:20:05,027 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 21:20:05,027 INFO L85 PathProgramCache]: Analyzing trace with hash -184388308, now seen corresponding path program 1 times [2022-11-20 21:20:05,028 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 21:20:05,037 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1060083203] [2022-11-20 21:20:05,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 21:20:05,038 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 21:20:05,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 21:20:05,212 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-11-20 21:20:05,213 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 21:20:05,213 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1060083203] [2022-11-20 21:20:05,213 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1060083203] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 21:20:05,213 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [24141613] [2022-11-20 21:20:05,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 21:20:05,214 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 21:20:05,214 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7279b0a-e984-4379-8b06-301e548d9f3b/bin/utaipan-6cKwYrpEi9/z3 [2022-11-20 21:20:05,216 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7279b0a-e984-4379-8b06-301e548d9f3b/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 21:20:05,223 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7279b0a-e984-4379-8b06-301e548d9f3b/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-20 21:20:05,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 21:20:05,615 INFO L263 TraceCheckSpWp]: Trace formula consists of 1151 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-20 21:20:05,624 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 21:20:05,689 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-11-20 21:20:05,690 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 21:20:05,783 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-11-20 21:20:05,784 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [24141613] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 21:20:05,784 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [916104380] [2022-11-20 21:20:05,806 INFO L159 IcfgInterpreter]: Started Sifa with 74 locations of interest [2022-11-20 21:20:05,806 INFO L166 IcfgInterpreter]: Building call graph [2022-11-20 21:20:05,810 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-20 21:20:05,815 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-20 21:20:05,816 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-20 21:20:47,114 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 440 for LOIs [2022-11-20 21:20:47,536 INFO L197 IcfgInterpreter]: Interpreting procedure setClientPrivateKey with input of size 441 for LOIs [2022-11-20 21:20:47,874 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-20 21:21:05,656 WARN L233 SmtUtils]: Spent 5.01s on a formula simplification. DAG size of input: 463 DAG size of output: 259 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 21:21:24,278 WARN L233 SmtUtils]: Spent 6.90s on a formula simplification. DAG size of input: 476 DAG size of output: 363 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 21:21:31,096 WARN L233 SmtUtils]: Spent 5.76s on a formula simplification. DAG size of input: 486 DAG size of output: 311 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 21:21:36,364 WARN L233 SmtUtils]: Spent 5.06s on a formula simplification. DAG size of input: 498 DAG size of output: 312 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 21:21:44,553 WARN L233 SmtUtils]: Spent 6.91s on a formula simplification. DAG size of input: 508 DAG size of output: 345 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 21:22:05,034 WARN L233 SmtUtils]: Spent 20.17s on a formula simplification. DAG size of input: 589 DAG size of output: 463 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 21:22:25,786 WARN L233 SmtUtils]: Spent 20.40s on a formula simplification. DAG size of input: 591 DAG size of output: 463 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 21:22:46,412 WARN L233 SmtUtils]: Spent 20.22s on a formula simplification. DAG size of input: 590 DAG size of output: 464 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 21:23:06,907 WARN L233 SmtUtils]: Spent 20.08s on a formula simplification. DAG size of input: 588 DAG size of output: 462 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 21:23:11,231 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [916104380] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 21:23:11,232 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-11-20 21:23:11,232 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [4, 4, 4] total 26 [2022-11-20 21:23:11,233 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1789610790] [2022-11-20 21:23:11,233 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 21:23:11,233 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-11-20 21:23:11,234 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 21:23:11,234 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-11-20 21:23:11,235 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=571, Unknown=0, NotChecked=0, Total=650 [2022-11-20 21:23:11,235 INFO L87 Difference]: Start difference. First operand 248 states and 350 transitions. Second operand has 21 states, 16 states have (on average 2.8125) internal successors, (45), 15 states have internal predecessors, (45), 7 states have call successors, (20), 3 states have call predecessors, (20), 3 states have return successors, (17), 7 states have call predecessors, (17), 7 states have call successors, (17) [2022-11-20 21:23:23,395 WARN L233 SmtUtils]: Spent 10.29s on a formula simplification. DAG size of input: 511 DAG size of output: 424 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 21:23:33,981 WARN L233 SmtUtils]: Spent 10.30s on a formula simplification. DAG size of input: 511 DAG size of output: 424 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 21:23:45,025 WARN L233 SmtUtils]: Spent 10.75s on a formula simplification. DAG size of input: 518 DAG size of output: 430 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 21:23:55,657 WARN L233 SmtUtils]: Spent 10.27s on a formula simplification. DAG size of input: 509 DAG size of output: 425 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 21:24:04,110 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 21:24:04,111 INFO L93 Difference]: Finished difference Result 547 states and 807 transitions. [2022-11-20 21:24:04,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2022-11-20 21:24:04,112 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 16 states have (on average 2.8125) internal successors, (45), 15 states have internal predecessors, (45), 7 states have call successors, (20), 3 states have call predecessors, (20), 3 states have return successors, (17), 7 states have call predecessors, (17), 7 states have call successors, (17) Word has length 91 [2022-11-20 21:24:04,112 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 21:24:04,114 INFO L225 Difference]: With dead ends: 547 [2022-11-20 21:24:04,114 INFO L226 Difference]: Without dead ends: 317 [2022-11-20 21:24:04,116 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 279 GetRequests, 251 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 162 ImplicationChecksByTransitivity, 185.7s TimeCoverageRelationStatistics Valid=118, Invalid=752, Unknown=0, NotChecked=0, Total=870 [2022-11-20 21:24:04,117 INFO L413 NwaCegarLoop]: 225 mSDtfsCounter, 129 mSDsluCounter, 3290 mSDsCounter, 0 mSdLazyCounter, 1919 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 129 SdHoareTripleChecker+Valid, 3515 SdHoareTripleChecker+Invalid, 1941 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 1919 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.2s IncrementalHoareTripleChecker+Time [2022-11-20 21:24:04,117 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [129 Valid, 3515 Invalid, 1941 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [22 Valid, 1919 Invalid, 0 Unknown, 0 Unchecked, 10.2s Time] [2022-11-20 21:24:04,118 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 317 states. [2022-11-20 21:24:04,287 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 317 to 276. [2022-11-20 21:24:04,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 276 states, 174 states have (on average 1.367816091954023) internal successors, (238), 178 states have internal predecessors, (238), 76 states have call successors, (76), 25 states have call predecessors, (76), 25 states have return successors, (75), 74 states have call predecessors, (75), 75 states have call successors, (75) [2022-11-20 21:24:04,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 276 states to 276 states and 389 transitions. [2022-11-20 21:24:04,296 INFO L78 Accepts]: Start accepts. Automaton has 276 states and 389 transitions. Word has length 91 [2022-11-20 21:24:04,298 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 21:24:04,299 INFO L495 AbstractCegarLoop]: Abstraction has 276 states and 389 transitions. [2022-11-20 21:24:04,299 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 16 states have (on average 2.8125) internal successors, (45), 15 states have internal predecessors, (45), 7 states have call successors, (20), 3 states have call predecessors, (20), 3 states have return successors, (17), 7 states have call predecessors, (17), 7 states have call successors, (17) [2022-11-20 21:24:04,299 INFO L276 IsEmpty]: Start isEmpty. Operand 276 states and 389 transitions. [2022-11-20 21:24:04,308 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2022-11-20 21:24:04,308 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 21:24:04,309 INFO L195 NwaCegarLoop]: trace histogram [4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 21:24:04,321 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7279b0a-e984-4379-8b06-301e548d9f3b/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-20 21:24:04,516 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7279b0a-e984-4379-8b06-301e548d9f3b/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 21:24:04,516 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 21:24:04,517 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 21:24:04,517 INFO L85 PathProgramCache]: Analyzing trace with hash 990561314, now seen corresponding path program 1 times [2022-11-20 21:24:04,517 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 21:24:04,517 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [514245364] [2022-11-20 21:24:04,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 21:24:04,517 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 21:24:04,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 21:24:04,681 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-11-20 21:24:04,682 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 21:24:04,682 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [514245364] [2022-11-20 21:24:04,682 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [514245364] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 21:24:04,682 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1102071032] [2022-11-20 21:24:04,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 21:24:04,683 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 21:24:04,683 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7279b0a-e984-4379-8b06-301e548d9f3b/bin/utaipan-6cKwYrpEi9/z3 [2022-11-20 21:24:04,684 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7279b0a-e984-4379-8b06-301e548d9f3b/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 21:24:04,722 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7279b0a-e984-4379-8b06-301e548d9f3b/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-20 21:24:05,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 21:24:05,043 INFO L263 TraceCheckSpWp]: Trace formula consists of 1109 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-20 21:24:05,047 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 21:24:05,094 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-11-20 21:24:05,094 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 21:24:05,179 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-11-20 21:24:05,179 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1102071032] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 21:24:05,180 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1131102331] [2022-11-20 21:24:05,184 INFO L159 IcfgInterpreter]: Started Sifa with 71 locations of interest [2022-11-20 21:24:05,184 INFO L166 IcfgInterpreter]: Building call graph [2022-11-20 21:24:05,184 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-20 21:24:05,185 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-20 21:24:05,185 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-20 21:24:44,249 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 439 for LOIs [2022-11-20 21:24:44,544 INFO L197 IcfgInterpreter]: Interpreting procedure setClientPrivateKey with input of size 442 for LOIs [2022-11-20 21:24:44,829 INFO L197 IcfgInterpreter]: Interpreting procedure sendEmail with input of size 248 for LOIs [2022-11-20 21:24:46,328 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailTo with input of size 230 for LOIs [2022-11-20 21:24:46,364 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing with input of size 250 for LOIs [2022-11-20 21:24:47,042 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing__wrappee__AutoResponder with input of size 257 for LOIs [2022-11-20 21:24:53,896 INFO L197 IcfgInterpreter]: Interpreting procedure getEmailTo with input of size 435 for LOIs [2022-11-20 21:24:54,439 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailFrom with input of size 468 for LOIs [2022-11-20 21:24:57,536 INFO L197 IcfgInterpreter]: Interpreting procedure getClientAddressBookSize with input of size 222 for LOIs [2022-11-20 21:24:57,593 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-20 21:25:32,598 WARN L233 SmtUtils]: Spent 6.90s on a formula simplification. DAG size of input: 476 DAG size of output: 363 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 21:25:39,412 WARN L233 SmtUtils]: Spent 5.75s on a formula simplification. DAG size of input: 486 DAG size of output: 311 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 21:25:44,695 WARN L233 SmtUtils]: Spent 5.09s on a formula simplification. DAG size of input: 498 DAG size of output: 312 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 21:25:52,831 WARN L233 SmtUtils]: Spent 6.88s on a formula simplification. DAG size of input: 508 DAG size of output: 345 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 21:26:05,659 WARN L233 SmtUtils]: Spent 12.49s on a formula simplification. DAG size of input: 587 DAG size of output: 330 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 21:26:25,947 WARN L233 SmtUtils]: Spent 19.95s on a formula simplification. DAG size of input: 589 DAG size of output: 457 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 21:26:48,099 WARN L233 SmtUtils]: Spent 5.55s on a formula simplification. DAG size of input: 468 DAG size of output: 259 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 21:27:18,197 WARN L233 SmtUtils]: Spent 5.64s on a formula simplification. DAG size of input: 435 DAG size of output: 241 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 21:27:24,555 WARN L233 SmtUtils]: Spent 5.68s on a formula simplification. DAG size of input: 454 DAG size of output: 249 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 21:27:49,531 WARN L233 SmtUtils]: Spent 5.28s on a formula simplification. DAG size of input: 587 DAG size of output: 376 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 21:27:55,584 WARN L233 SmtUtils]: Spent 5.29s on a formula simplification. DAG size of input: 588 DAG size of output: 374 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 21:28:02,582 WARN L233 SmtUtils]: Spent 6.15s on a formula simplification. DAG size of input: 652 DAG size of output: 417 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 21:28:02,585 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [1131102331] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 21:28:02,585 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-11-20 21:28:02,586 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [53] imperfect sequences [4, 4, 4] total 59 [2022-11-20 21:28:02,586 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [344999482] [2022-11-20 21:28:02,586 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 21:28:02,587 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 54 states [2022-11-20 21:28:02,587 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 21:28:02,587 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2022-11-20 21:28:02,589 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=160, Invalid=3262, Unknown=0, NotChecked=0, Total=3422 [2022-11-20 21:28:02,589 INFO L87 Difference]: Start difference. First operand 276 states and 389 transitions. Second operand has 54 states, 37 states have (on average 1.2162162162162162) internal successors, (45), 34 states have internal predecessors, (45), 17 states have call successors, (18), 10 states have call predecessors, (18), 7 states have return successors, (15), 14 states have call predecessors, (15), 14 states have call successors, (15) [2022-11-20 21:28:12,276 WARN L233 SmtUtils]: Spent 6.57s on a formula simplification. DAG size of input: 458 DAG size of output: 338 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 21:28:31,728 WARN L233 SmtUtils]: Spent 19.00s on a formula simplification. DAG size of input: 504 DAG size of output: 456 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 21:28:40,392 WARN L233 SmtUtils]: Spent 8.23s on a formula simplification. DAG size of input: 458 DAG size of output: 380 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 21:28:49,127 WARN L233 SmtUtils]: Spent 8.18s on a formula simplification. DAG size of input: 456 DAG size of output: 378 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 21:29:55,391 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 21:29:55,392 INFO L93 Difference]: Finished difference Result 663 states and 976 transitions. [2022-11-20 21:29:55,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2022-11-20 21:29:55,392 INFO L78 Accepts]: Start accepts. Automaton has has 54 states, 37 states have (on average 1.2162162162162162) internal successors, (45), 34 states have internal predecessors, (45), 17 states have call successors, (18), 10 states have call predecessors, (18), 7 states have return successors, (15), 14 states have call predecessors, (15), 14 states have call successors, (15) Word has length 86 [2022-11-20 21:29:55,393 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 21:29:55,396 INFO L225 Difference]: With dead ends: 663 [2022-11-20 21:29:55,396 INFO L226 Difference]: Without dead ends: 433 [2022-11-20 21:29:55,398 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 276 GetRequests, 201 SyntacticMatches, 2 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1147 ImplicationChecksByTransitivity, 269.0s TimeCoverageRelationStatistics Valid=257, Invalid=5293, Unknown=0, NotChecked=0, Total=5550 [2022-11-20 21:29:55,399 INFO L413 NwaCegarLoop]: 230 mSDtfsCounter, 223 mSDsluCounter, 5398 mSDsCounter, 0 mSdLazyCounter, 6820 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 26.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 235 SdHoareTripleChecker+Valid, 5628 SdHoareTripleChecker+Invalid, 6858 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 6820 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 28.0s IncrementalHoareTripleChecker+Time [2022-11-20 21:29:55,400 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [235 Valid, 5628 Invalid, 6858 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [38 Valid, 6820 Invalid, 0 Unknown, 0 Unchecked, 28.0s Time] [2022-11-20 21:29:55,401 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 433 states. [2022-11-20 21:29:55,673 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 433 to 350. [2022-11-20 21:29:55,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 350 states, 230 states have (on average 1.3608695652173912) internal successors, (313), 235 states have internal predecessors, (313), 88 states have call successors, (88), 33 states have call predecessors, (88), 31 states have return successors, (88), 83 states have call predecessors, (88), 87 states have call successors, (88) [2022-11-20 21:29:55,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 350 states to 350 states and 489 transitions. [2022-11-20 21:29:55,677 INFO L78 Accepts]: Start accepts. Automaton has 350 states and 489 transitions. Word has length 86 [2022-11-20 21:29:55,677 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 21:29:55,677 INFO L495 AbstractCegarLoop]: Abstraction has 350 states and 489 transitions. [2022-11-20 21:29:55,678 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 54 states, 37 states have (on average 1.2162162162162162) internal successors, (45), 34 states have internal predecessors, (45), 17 states have call successors, (18), 10 states have call predecessors, (18), 7 states have return successors, (15), 14 states have call predecessors, (15), 14 states have call successors, (15) [2022-11-20 21:29:55,678 INFO L276 IsEmpty]: Start isEmpty. Operand 350 states and 489 transitions. [2022-11-20 21:29:55,680 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2022-11-20 21:29:55,680 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 21:29:55,680 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 21:29:55,687 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7279b0a-e984-4379-8b06-301e548d9f3b/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-20 21:29:55,887 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7279b0a-e984-4379-8b06-301e548d9f3b/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 21:29:55,888 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 21:29:55,888 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 21:29:55,888 INFO L85 PathProgramCache]: Analyzing trace with hash -2014060439, now seen corresponding path program 1 times [2022-11-20 21:29:55,888 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 21:29:55,888 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1081951616] [2022-11-20 21:29:55,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 21:29:55,889 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 21:29:55,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 21:29:56,154 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-20 21:29:56,154 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 21:29:56,155 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1081951616] [2022-11-20 21:29:56,155 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1081951616] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 21:29:56,155 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [996803721] [2022-11-20 21:29:56,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 21:29:56,155 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 21:29:56,155 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7279b0a-e984-4379-8b06-301e548d9f3b/bin/utaipan-6cKwYrpEi9/z3 [2022-11-20 21:29:56,156 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7279b0a-e984-4379-8b06-301e548d9f3b/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 21:29:56,181 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7279b0a-e984-4379-8b06-301e548d9f3b/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-20 21:29:56,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 21:29:56,512 INFO L263 TraceCheckSpWp]: Trace formula consists of 1215 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-20 21:29:56,517 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 21:29:56,540 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-20 21:29:56,541 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 21:29:56,624 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-20 21:29:56,625 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [996803721] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 21:29:56,625 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1713887774] [2022-11-20 21:29:56,629 INFO L159 IcfgInterpreter]: Started Sifa with 76 locations of interest [2022-11-20 21:29:56,629 INFO L166 IcfgInterpreter]: Building call graph [2022-11-20 21:29:56,629 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-20 21:29:56,630 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-20 21:29:56,630 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-20 21:30:41,850 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 440 for LOIs [2022-11-20 21:30:42,157 INFO L197 IcfgInterpreter]: Interpreting procedure setClientKeyringPublicKey with input of size 234 for LOIs [2022-11-20 21:30:42,226 INFO L197 IcfgInterpreter]: Interpreting procedure setClientKeyringUser with input of size 243 for LOIs [2022-11-20 21:30:42,292 INFO L197 IcfgInterpreter]: Interpreting procedure createClientKeyringEntry with input of size 233 for LOIs [2022-11-20 21:30:42,356 INFO L197 IcfgInterpreter]: Interpreting procedure setClientPrivateKey with input of size 441 for LOIs [2022-11-20 21:30:42,704 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-20 21:31:18,584 WARN L233 SmtUtils]: Spent 6.92s on a formula simplification. DAG size of input: 476 DAG size of output: 363 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 21:31:25,414 WARN L233 SmtUtils]: Spent 5.77s on a formula simplification. DAG size of input: 486 DAG size of output: 311 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 21:31:30,704 WARN L233 SmtUtils]: Spent 5.09s on a formula simplification. DAG size of input: 498 DAG size of output: 312 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 21:31:38,871 WARN L233 SmtUtils]: Spent 6.90s on a formula simplification. DAG size of input: 508 DAG size of output: 345 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 21:31:49,577 WARN L233 SmtUtils]: Spent 10.35s on a formula simplification. DAG size of input: 632 DAG size of output: 404 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 21:32:09,362 WARN L233 SmtUtils]: Spent 19.41s on a formula simplification. DAG size of input: 634 DAG size of output: 510 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 21:32:26,872 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [1713887774] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 21:32:26,872 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-11-20 21:32:26,872 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [29] imperfect sequences [4, 4, 4] total 35 [2022-11-20 21:32:26,872 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [25082284] [2022-11-20 21:32:26,872 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 21:32:26,873 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2022-11-20 21:32:26,873 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 21:32:26,874 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2022-11-20 21:32:26,874 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=110, Invalid=1080, Unknown=0, NotChecked=0, Total=1190 [2022-11-20 21:32:26,874 INFO L87 Difference]: Start difference. First operand 350 states and 489 transitions. Second operand has 30 states, 19 states have (on average 2.3684210526315788) internal successors, (45), 18 states have internal predecessors, (45), 10 states have call successors, (20), 6 states have call predecessors, (20), 6 states have return successors, (17), 10 states have call predecessors, (17), 10 states have call successors, (17) [2022-11-20 21:32:43,881 WARN L233 SmtUtils]: Spent 9.84s on a formula simplification. DAG size of input: 558 DAG size of output: 425 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 21:32:57,701 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 21:32:57,701 INFO L93 Difference]: Finished difference Result 675 states and 983 transitions. [2022-11-20 21:32:57,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-11-20 21:32:57,702 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 19 states have (on average 2.3684210526315788) internal successors, (45), 18 states have internal predecessors, (45), 10 states have call successors, (20), 6 states have call predecessors, (20), 6 states have return successors, (17), 10 states have call predecessors, (17), 10 states have call successors, (17) Word has length 89 [2022-11-20 21:32:57,702 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 21:32:57,705 INFO L225 Difference]: With dead ends: 675 [2022-11-20 21:32:57,705 INFO L226 Difference]: Without dead ends: 445 [2022-11-20 21:32:57,707 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 271 GetRequests, 236 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 276 ImplicationChecksByTransitivity, 119.2s TimeCoverageRelationStatistics Valid=128, Invalid=1204, Unknown=0, NotChecked=0, Total=1332 [2022-11-20 21:32:57,707 INFO L413 NwaCegarLoop]: 223 mSDtfsCounter, 99 mSDsluCounter, 3874 mSDsCounter, 0 mSdLazyCounter, 3457 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 99 SdHoareTripleChecker+Valid, 4097 SdHoareTripleChecker+Invalid, 3472 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 3457 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15.1s IncrementalHoareTripleChecker+Time [2022-11-20 21:32:57,708 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [99 Valid, 4097 Invalid, 3472 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [15 Valid, 3457 Invalid, 0 Unknown, 0 Unchecked, 15.1s Time] [2022-11-20 21:32:57,709 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 445 states. [2022-11-20 21:32:58,003 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 445 to 386. [2022-11-20 21:32:58,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 386 states, 260 states have (on average 1.3653846153846154) internal successors, (355), 265 states have internal predecessors, (355), 91 states have call successors, (91), 36 states have call predecessors, (91), 34 states have return successors, (91), 86 states have call predecessors, (91), 90 states have call successors, (91) [2022-11-20 21:32:58,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 386 states to 386 states and 537 transitions. [2022-11-20 21:32:58,008 INFO L78 Accepts]: Start accepts. Automaton has 386 states and 537 transitions. Word has length 89 [2022-11-20 21:32:58,008 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 21:32:58,008 INFO L495 AbstractCegarLoop]: Abstraction has 386 states and 537 transitions. [2022-11-20 21:32:58,008 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 19 states have (on average 2.3684210526315788) internal successors, (45), 18 states have internal predecessors, (45), 10 states have call successors, (20), 6 states have call predecessors, (20), 6 states have return successors, (17), 10 states have call predecessors, (17), 10 states have call successors, (17) [2022-11-20 21:32:58,009 INFO L276 IsEmpty]: Start isEmpty. Operand 386 states and 537 transitions. [2022-11-20 21:32:58,011 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2022-11-20 21:32:58,011 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 21:32:58,011 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, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 21:32:58,017 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7279b0a-e984-4379-8b06-301e548d9f3b/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-20 21:32:58,217 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7279b0a-e984-4379-8b06-301e548d9f3b/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 21:32:58,217 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 21:32:58,218 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 21:32:58,218 INFO L85 PathProgramCache]: Analyzing trace with hash -176031617, now seen corresponding path program 1 times [2022-11-20 21:32:58,218 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 21:32:58,218 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [783977060] [2022-11-20 21:32:58,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 21:32:58,218 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 21:32:58,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 21:32:58,361 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-11-20 21:32:58,362 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 21:32:58,362 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [783977060] [2022-11-20 21:32:58,362 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [783977060] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 21:32:58,362 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1632069173] [2022-11-20 21:32:58,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 21:32:58,363 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 21:32:58,363 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7279b0a-e984-4379-8b06-301e548d9f3b/bin/utaipan-6cKwYrpEi9/z3 [2022-11-20 21:32:58,364 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7279b0a-e984-4379-8b06-301e548d9f3b/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 21:32:58,374 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7279b0a-e984-4379-8b06-301e548d9f3b/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-20 21:32:58,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 21:32:58,696 INFO L263 TraceCheckSpWp]: Trace formula consists of 1123 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-20 21:32:58,699 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 21:32:58,728 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-11-20 21:32:58,729 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 21:32:58,796 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-11-20 21:32:58,797 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1632069173] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 21:32:58,797 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [915788943] [2022-11-20 21:32:58,804 INFO L159 IcfgInterpreter]: Started Sifa with 74 locations of interest [2022-11-20 21:32:58,804 INFO L166 IcfgInterpreter]: Building call graph [2022-11-20 21:32:58,805 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-20 21:32:58,805 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-20 21:32:58,805 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs