./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/email_spec1_product20.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_6182280d-4178-4163-84e2-ae3bc1306788/bin/utaipan-6cKwYrpEi9/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6182280d-4178-4163-84e2-ae3bc1306788/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_6182280d-4178-4163-84e2-ae3bc1306788/bin/utaipan-6cKwYrpEi9/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6182280d-4178-4163-84e2-ae3bc1306788/bin/utaipan-6cKwYrpEi9/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/email_spec1_product20.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6182280d-4178-4163-84e2-ae3bc1306788/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_6182280d-4178-4163-84e2-ae3bc1306788/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 e0e95c13964d33a58c84e6632b6635f09155542b4e87cc9520cc45bb7c6f5f1d --- 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 21:04:59,277 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-20 21:04:59,279 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-20 21:04:59,318 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-20 21:04:59,319 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-20 21:04:59,320 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-20 21:04:59,321 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-20 21:04:59,323 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-20 21:04:59,324 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-20 21:04:59,325 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-20 21:04:59,326 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-20 21:04:59,327 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-20 21:04:59,328 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-20 21:04:59,329 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-20 21:04:59,330 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-20 21:04:59,331 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-20 21:04:59,332 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-20 21:04:59,333 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-20 21:04:59,335 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-20 21:04:59,337 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-20 21:04:59,339 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-20 21:04:59,340 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-20 21:04:59,341 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-20 21:04:59,342 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-20 21:04:59,345 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-20 21:04:59,346 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-20 21:04:59,346 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-20 21:04:59,347 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-20 21:04:59,348 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-20 21:04:59,349 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-20 21:04:59,349 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-20 21:04:59,350 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-20 21:04:59,351 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-20 21:04:59,351 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-20 21:04:59,352 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-20 21:04:59,353 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-20 21:04:59,353 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-20 21:04:59,354 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-20 21:04:59,354 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-20 21:04:59,355 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-20 21:04:59,356 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-20 21:04:59,356 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6182280d-4178-4163-84e2-ae3bc1306788/bin/utaipan-6cKwYrpEi9/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-11-20 21:04:59,382 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-20 21:04:59,382 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-20 21:04:59,383 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-20 21:04:59,383 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-20 21:04:59,384 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-20 21:04:59,384 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-20 21:04:59,384 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-20 21:04:59,384 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-20 21:04:59,385 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-20 21:04:59,385 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-20 21:04:59,385 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-20 21:04:59,385 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-20 21:04:59,385 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-20 21:04:59,386 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-20 21:04:59,386 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-20 21:04:59,386 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-20 21:04:59,386 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-20 21:04:59,387 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-20 21:04:59,387 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-20 21:04:59,387 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-20 21:04:59,388 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-20 21:04:59,388 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-20 21:04:59,388 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-20 21:04:59,388 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-20 21:04:59,389 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-20 21:04:59,389 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-20 21:04:59,389 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-20 21:04:59,389 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-20 21:04:59,389 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-20 21:04:59,390 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-20 21:04:59,390 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-20 21:04:59,390 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-20 21:04:59,390 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 21:04:59,391 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-20 21:04:59,391 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-20 21:04:59,391 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-20 21:04:59,391 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-20 21:04:59,391 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-20 21:04:59,392 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-20 21:04:59,392 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-20 21:04:59,392 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-20 21:04:59,392 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_6182280d-4178-4163-84e2-ae3bc1306788/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6182280d-4178-4163-84e2-ae3bc1306788/bin/utaipan-6cKwYrpEi9 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e0e95c13964d33a58c84e6632b6635f09155542b4e87cc9520cc45bb7c6f5f1d [2022-11-20 21:04:59,696 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-20 21:04:59,736 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-20 21:04:59,739 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-20 21:04:59,740 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-20 21:04:59,741 INFO L275 PluginConnector]: CDTParser initialized [2022-11-20 21:04:59,742 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6182280d-4178-4163-84e2-ae3bc1306788/bin/utaipan-6cKwYrpEi9/../../sv-benchmarks/c/product-lines/email_spec1_product20.cil.c [2022-11-20 21:05:02,745 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-20 21:05:03,151 INFO L351 CDTParser]: Found 1 translation units. [2022-11-20 21:05:03,152 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6182280d-4178-4163-84e2-ae3bc1306788/sv-benchmarks/c/product-lines/email_spec1_product20.cil.c [2022-11-20 21:05:03,178 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6182280d-4178-4163-84e2-ae3bc1306788/bin/utaipan-6cKwYrpEi9/data/f1d005210/09d51c79f1124dde9974c57dc3a1f839/FLAGcb9bea41b [2022-11-20 21:05:03,192 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6182280d-4178-4163-84e2-ae3bc1306788/bin/utaipan-6cKwYrpEi9/data/f1d005210/09d51c79f1124dde9974c57dc3a1f839 [2022-11-20 21:05:03,194 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-20 21:05:03,195 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-20 21:05:03,197 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-20 21:05:03,202 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-20 21:05:03,206 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-20 21:05:03,207 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 09:05:03" (1/1) ... [2022-11-20 21:05:03,208 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@90c704a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:05:03, skipping insertion in model container [2022-11-20 21:05:03,208 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 09:05:03" (1/1) ... [2022-11-20 21:05:03,214 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-20 21:05:03,272 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-20 21:05:03,661 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_6182280d-4178-4163-84e2-ae3bc1306788/sv-benchmarks/c/product-lines/email_spec1_product20.cil.c[17698,17711] [2022-11-20 21:05:03,951 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 21:05:03,965 INFO L203 MainTranslator]: Completed pre-run [2022-11-20 21:05:04,002 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_6182280d-4178-4163-84e2-ae3bc1306788/sv-benchmarks/c/product-lines/email_spec1_product20.cil.c[17698,17711] [2022-11-20 21:05:04,088 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 21:05:04,132 INFO L208 MainTranslator]: Completed translation [2022-11-20 21:05:04,133 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:05:04 WrapperNode [2022-11-20 21:05:04,133 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-20 21:05:04,134 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-20 21:05:04,134 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-20 21:05:04,135 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-20 21:05:04,143 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:05:04" (1/1) ... [2022-11-20 21:05:04,176 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:05:04" (1/1) ... [2022-11-20 21:05:04,261 INFO L138 Inliner]: procedures = 128, calls = 215, calls flagged for inlining = 55, calls inlined = 48, statements flattened = 953 [2022-11-20 21:05:04,262 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-20 21:05:04,262 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-20 21:05:04,262 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-20 21:05:04,264 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-20 21:05:04,275 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:05:04" (1/1) ... [2022-11-20 21:05:04,275 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:05:04" (1/1) ... [2022-11-20 21:05:04,291 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:05:04" (1/1) ... [2022-11-20 21:05:04,295 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:05:04" (1/1) ... [2022-11-20 21:05:04,331 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:05:04" (1/1) ... [2022-11-20 21:05:04,340 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:05:04" (1/1) ... [2022-11-20 21:05:04,358 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:05:04" (1/1) ... [2022-11-20 21:05:04,362 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:05:04" (1/1) ... [2022-11-20 21:05:04,376 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-20 21:05:04,377 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-20 21:05:04,378 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-20 21:05:04,378 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-20 21:05:04,385 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:05:04" (1/1) ... [2022-11-20 21:05:04,391 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 21:05:04,402 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6182280d-4178-4163-84e2-ae3bc1306788/bin/utaipan-6cKwYrpEi9/z3 [2022-11-20 21:05:04,424 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6182280d-4178-4163-84e2-ae3bc1306788/bin/utaipan-6cKwYrpEi9/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-20 21:05:04,450 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6182280d-4178-4163-84e2-ae3bc1306788/bin/utaipan-6cKwYrpEi9/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-20 21:05:04,475 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookSize [2022-11-20 21:05:04,476 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookSize [2022-11-20 21:05:04,476 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailEncryptionKey [2022-11-20 21:05:04,476 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailEncryptionKey [2022-11-20 21:05:04,476 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookAddress [2022-11-20 21:05:04,476 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookAddress [2022-11-20 21:05:04,477 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailEncryptionKey [2022-11-20 21:05:04,477 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailEncryptionKey [2022-11-20 21:05:04,477 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2022-11-20 21:05:04,477 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2022-11-20 21:05:04,477 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing__wrappee__AutoResponder [2022-11-20 21:05:04,478 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing__wrappee__AutoResponder [2022-11-20 21:05:04,478 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2022-11-20 21:05:04,478 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2022-11-20 21:05:04,478 INFO L130 BoogieDeclarations]: Found specification of procedure createClientKeyringEntry [2022-11-20 21:05:04,479 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientKeyringEntry [2022-11-20 21:05:04,479 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsEncrypted [2022-11-20 21:05:04,479 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsEncrypted [2022-11-20 21:05:04,480 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAdd [2022-11-20 21:05:04,480 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAdd [2022-11-20 21:05:04,480 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2022-11-20 21:05:04,480 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailFrom [2022-11-20 21:05:04,481 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailFrom [2022-11-20 21:05:04,481 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2022-11-20 21:05:04,482 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2022-11-20 21:05:04,482 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-20 21:05:04,483 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookSize [2022-11-20 21:05:04,483 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookSize [2022-11-20 21:05:04,483 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringUser [2022-11-20 21:05:04,483 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringUser [2022-11-20 21:05:04,483 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringPublicKey [2022-11-20 21:05:04,484 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringPublicKey [2022-11-20 21:05:04,484 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2022-11-20 21:05:04,484 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2022-11-20 21:05:04,484 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2022-11-20 21:05:04,485 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2022-11-20 21:05:04,485 INFO L130 BoogieDeclarations]: Found specification of procedure isEncrypted [2022-11-20 21:05:04,485 INFO L138 BoogieDeclarations]: Found implementation of procedure isEncrypted [2022-11-20 21:05:04,485 INFO L130 BoogieDeclarations]: Found specification of procedure setClientPrivateKey [2022-11-20 21:05:04,485 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientPrivateKey [2022-11-20 21:05:04,486 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailTo [2022-11-20 21:05:04,486 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailTo [2022-11-20 21:05:04,486 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-20 21:05:04,486 INFO L130 BoogieDeclarations]: Found specification of procedure generateKeyPair [2022-11-20 21:05:04,487 INFO L138 BoogieDeclarations]: Found implementation of procedure generateKeyPair [2022-11-20 21:05:04,487 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookAddress [2022-11-20 21:05:04,488 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookAddress [2022-11-20 21:05:04,488 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-20 21:05:04,488 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-20 21:05:04,796 INFO L235 CfgBuilder]: Building ICFG [2022-11-20 21:05:04,798 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-20 21:05:05,790 INFO L276 CfgBuilder]: Performing block encoding [2022-11-20 21:05:06,359 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-20 21:05:06,360 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-20 21:05:06,363 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 09:05:06 BoogieIcfgContainer [2022-11-20 21:05:06,363 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-20 21:05:06,366 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-20 21:05:06,366 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-20 21:05:06,370 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-20 21:05:06,370 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 09:05:03" (1/3) ... [2022-11-20 21:05:06,372 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@524cba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 09:05:06, skipping insertion in model container [2022-11-20 21:05:06,372 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:05:04" (2/3) ... [2022-11-20 21:05:06,373 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@524cba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 09:05:06, skipping insertion in model container [2022-11-20 21:05:06,373 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 09:05:06" (3/3) ... [2022-11-20 21:05:06,375 INFO L112 eAbstractionObserver]: Analyzing ICFG email_spec1_product20.cil.c [2022-11-20 21:05:06,395 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-20 21:05:06,395 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-20 21:05:06,449 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-20 21:05:06,455 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;@25874036, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-20 21:05:06,456 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-20 21:05:06,461 INFO L276 IsEmpty]: Start isEmpty. Operand has 181 states, 103 states have (on average 1.3398058252427185) internal successors, (138), 108 states have internal predecessors, (138), 54 states have call successors, (54), 22 states have call predecessors, (54), 22 states have return successors, (54), 53 states have call predecessors, (54), 54 states have call successors, (54) [2022-11-20 21:05:06,474 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-11-20 21:05:06,474 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 21:05:06,475 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 21:05:06,475 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 21:05:06,480 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 21:05:06,480 INFO L85 PathProgramCache]: Analyzing trace with hash -933797065, now seen corresponding path program 1 times [2022-11-20 21:05:06,490 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 21:05:06,491 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [77602359] [2022-11-20 21:05:06,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 21:05:06,491 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 21:05:06,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 21:05:06,905 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-11-20 21:05:06,906 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 21:05:06,906 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [77602359] [2022-11-20 21:05:06,907 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [77602359] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 21:05:06,907 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 21:05:06,907 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-20 21:05:06,909 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [318167410] [2022-11-20 21:05:06,910 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 21:05:06,918 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-20 21:05:06,919 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 21:05:06,964 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-20 21:05:06,965 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-20 21:05:06,969 INFO L87 Difference]: Start difference. First operand has 181 states, 103 states have (on average 1.3398058252427185) internal successors, (138), 108 states have internal predecessors, (138), 54 states have call successors, (54), 22 states have call predecessors, (54), 22 states have return successors, (54), 53 states have call predecessors, (54), 54 states have call successors, (54) Second operand has 2 states, 2 states have (on average 15.5) internal successors, (31), 2 states have internal predecessors, (31), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-11-20 21:05:07,166 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 21:05:07,166 INFO L93 Difference]: Finished difference Result 270 states and 363 transitions. [2022-11-20 21:05:07,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-20 21:05:07,169 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 15.5) internal successors, (31), 2 states have internal predecessors, (31), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 63 [2022-11-20 21:05:07,169 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 21:05:07,186 INFO L225 Difference]: With dead ends: 270 [2022-11-20 21:05:07,186 INFO L226 Difference]: Without dead ends: 178 [2022-11-20 21:05:07,195 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 21:05:07,199 INFO L413 NwaCegarLoop]: 208 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 208 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 21:05:07,200 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 208 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 21:05:07,217 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178 states. [2022-11-20 21:05:07,266 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178 to 178. [2022-11-20 21:05:07,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 178 states, 101 states have (on average 1.306930693069307) internal successors, (132), 105 states have internal predecessors, (132), 54 states have call successors, (54), 22 states have call predecessors, (54), 22 states have return successors, (53), 52 states have call predecessors, (53), 53 states have call successors, (53) [2022-11-20 21:05:07,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 178 states to 178 states and 239 transitions. [2022-11-20 21:05:07,273 INFO L78 Accepts]: Start accepts. Automaton has 178 states and 239 transitions. Word has length 63 [2022-11-20 21:05:07,274 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 21:05:07,275 INFO L495 AbstractCegarLoop]: Abstraction has 178 states and 239 transitions. [2022-11-20 21:05:07,275 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 15.5) internal successors, (31), 2 states have internal predecessors, (31), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-11-20 21:05:07,275 INFO L276 IsEmpty]: Start isEmpty. Operand 178 states and 239 transitions. [2022-11-20 21:05:07,283 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2022-11-20 21:05:07,284 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 21:05:07,284 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 21:05:07,284 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-20 21:05:07,284 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 21:05:07,285 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 21:05:07,285 INFO L85 PathProgramCache]: Analyzing trace with hash -1109775274, now seen corresponding path program 1 times [2022-11-20 21:05:07,285 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 21:05:07,286 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2127664015] [2022-11-20 21:05:07,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 21:05:07,286 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 21:05:07,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 21:05:07,519 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-11-20 21:05:07,520 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 21:05:07,520 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2127664015] [2022-11-20 21:05:07,521 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2127664015] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 21:05:07,521 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 21:05:07,521 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 21:05:07,521 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1257531750] [2022-11-20 21:05:07,522 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 21:05:07,523 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 21:05:07,524 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 21:05:07,524 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 21:05:07,524 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 21:05:07,525 INFO L87 Difference]: Start difference. First operand 178 states and 239 transitions. Second operand has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-11-20 21:05:07,687 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 21:05:07,687 INFO L93 Difference]: Finished difference Result 266 states and 348 transitions. [2022-11-20 21:05:07,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 21:05:07,688 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 64 [2022-11-20 21:05:07,689 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 21:05:07,691 INFO L225 Difference]: With dead ends: 266 [2022-11-20 21:05:07,691 INFO L226 Difference]: Without dead ends: 180 [2022-11-20 21:05:07,692 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 21:05:07,693 INFO L413 NwaCegarLoop]: 205 mSDtfsCounter, 0 mSDsluCounter, 204 mSDsCounter, 0 mSdLazyCounter, 68 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 409 SdHoareTripleChecker+Invalid, 68 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 68 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 21:05:07,694 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 409 Invalid, 68 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 68 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 21:05:07,695 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 180 states. [2022-11-20 21:05:07,708 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 180 to 180. [2022-11-20 21:05:07,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 180 states, 103 states have (on average 1.3009708737864079) internal successors, (134), 107 states have internal predecessors, (134), 54 states have call successors, (54), 22 states have call predecessors, (54), 22 states have return successors, (53), 52 states have call predecessors, (53), 53 states have call successors, (53) [2022-11-20 21:05:07,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 180 states to 180 states and 241 transitions. [2022-11-20 21:05:07,716 INFO L78 Accepts]: Start accepts. Automaton has 180 states and 241 transitions. Word has length 64 [2022-11-20 21:05:07,716 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 21:05:07,717 INFO L495 AbstractCegarLoop]: Abstraction has 180 states and 241 transitions. [2022-11-20 21:05:07,717 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-11-20 21:05:07,717 INFO L276 IsEmpty]: Start isEmpty. Operand 180 states and 241 transitions. [2022-11-20 21:05:07,719 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-11-20 21:05:07,720 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 21:05:07,720 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] [2022-11-20 21:05:07,720 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-20 21:05:07,720 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 21:05:07,721 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 21:05:07,721 INFO L85 PathProgramCache]: Analyzing trace with hash -110976212, now seen corresponding path program 1 times [2022-11-20 21:05:07,721 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 21:05:07,722 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [735425673] [2022-11-20 21:05:07,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 21:05:07,722 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 21:05:07,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 21:05:07,934 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-11-20 21:05:07,934 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 21:05:07,934 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [735425673] [2022-11-20 21:05:07,934 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [735425673] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 21:05:07,935 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 21:05:07,935 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 21:05:07,935 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1925228366] [2022-11-20 21:05:07,935 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 21:05:07,936 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 21:05:07,936 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 21:05:07,937 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 21:05:07,937 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 21:05:07,937 INFO L87 Difference]: Start difference. First operand 180 states and 241 transitions. Second operand has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-11-20 21:05:08,059 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 21:05:08,059 INFO L93 Difference]: Finished difference Result 395 states and 549 transitions. [2022-11-20 21:05:08,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 21:05:08,060 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 69 [2022-11-20 21:05:08,060 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 21:05:08,062 INFO L225 Difference]: With dead ends: 395 [2022-11-20 21:05:08,063 INFO L226 Difference]: Without dead ends: 233 [2022-11-20 21:05:08,064 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 21:05:08,065 INFO L413 NwaCegarLoop]: 229 mSDtfsCounter, 59 mSDsluCounter, 202 mSDsCounter, 0 mSdLazyCounter, 71 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 77 SdHoareTripleChecker+Valid, 431 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 71 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 21:05:08,065 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [77 Valid, 431 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 71 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 21:05:08,067 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 233 states. [2022-11-20 21:05:08,097 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 233 to 228. [2022-11-20 21:05:08,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 228 states, 137 states have (on average 1.3795620437956204) internal successors, (189), 141 states have internal predecessors, (189), 68 states have call successors, (68), 22 states have call predecessors, (68), 22 states have return successors, (67), 66 states have call predecessors, (67), 67 states have call successors, (67) [2022-11-20 21:05:08,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 228 states to 228 states and 324 transitions. [2022-11-20 21:05:08,101 INFO L78 Accepts]: Start accepts. Automaton has 228 states and 324 transitions. Word has length 69 [2022-11-20 21:05:08,103 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 21:05:08,103 INFO L495 AbstractCegarLoop]: Abstraction has 228 states and 324 transitions. [2022-11-20 21:05:08,104 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, (15), 2 states have call predecessors, (15), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-11-20 21:05:08,104 INFO L276 IsEmpty]: Start isEmpty. Operand 228 states and 324 transitions. [2022-11-20 21:05:08,111 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-11-20 21:05:08,112 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 21:05:08,112 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] [2022-11-20 21:05:08,112 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-20 21:05:08,113 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 21:05:08,114 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 21:05:08,114 INFO L85 PathProgramCache]: Analyzing trace with hash -2146308305, now seen corresponding path program 1 times [2022-11-20 21:05:08,114 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 21:05:08,115 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [956808234] [2022-11-20 21:05:08,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 21:05:08,115 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 21:05:08,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 21:05:08,274 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-11-20 21:05:08,275 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 21:05:08,275 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [956808234] [2022-11-20 21:05:08,276 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [956808234] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 21:05:08,276 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1362823785] [2022-11-20 21:05:08,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 21:05:08,276 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 21:05:08,277 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6182280d-4178-4163-84e2-ae3bc1306788/bin/utaipan-6cKwYrpEi9/z3 [2022-11-20 21:05:08,281 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6182280d-4178-4163-84e2-ae3bc1306788/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 21:05:08,302 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6182280d-4178-4163-84e2-ae3bc1306788/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-20 21:05:08,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 21:05:08,609 INFO L263 TraceCheckSpWp]: Trace formula consists of 997 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-20 21:05:08,618 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 21:05:08,699 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-11-20 21:05:08,700 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 21:05:08,796 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-11-20 21:05:08,797 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1362823785] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 21:05:08,797 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [153752096] [2022-11-20 21:05:08,824 INFO L159 IcfgInterpreter]: Started Sifa with 59 locations of interest [2022-11-20 21:05:08,824 INFO L166 IcfgInterpreter]: Building call graph [2022-11-20 21:05:08,831 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-20 21:05:08,837 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-20 21:05:08,841 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-20 21:05:49,199 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 444 for LOIs [2022-11-20 21:05:49,541 INFO L197 IcfgInterpreter]: Interpreting procedure setClientPrivateKey with input of size 445 for LOIs [2022-11-20 21:05:49,877 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-20 21:06:07,651 WARN L233 SmtUtils]: Spent 5.09s on a formula simplification. DAG size of input: 467 DAG size of output: 263 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 21:06:21,038 WARN L233 SmtUtils]: Spent 5.05s on a formula simplification. DAG size of input: 468 DAG size of output: 288 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 21:06:31,749 WARN L233 SmtUtils]: Spent 5.01s on a formula simplification. DAG size of input: 490 DAG size of output: 285 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 21:07:00,448 WARN L233 SmtUtils]: Spent 17.09s on a formula simplification. DAG size of input: 588 DAG size of output: 439 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 21:07:11,129 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [153752096] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 21:07:11,129 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-11-20 21:07:11,129 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [4, 4, 4] total 26 [2022-11-20 21:07:11,130 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1486432172] [2022-11-20 21:07:11,130 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 21:07:11,131 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-11-20 21:07:11,131 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 21:07:11,132 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-11-20 21:07:11,132 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=572, Unknown=0, NotChecked=0, Total=650 [2022-11-20 21:07:11,133 INFO L87 Difference]: Start difference. First operand 228 states and 324 transitions. Second operand has 21 states, 16 states have (on average 2.3125) internal successors, (37), 15 states have internal predecessors, (37), 7 states have call successors, (15), 3 states have call predecessors, (15), 3 states have return successors, (12), 7 states have call predecessors, (12), 7 states have call successors, (12) [2022-11-20 21:07:19,964 WARN L233 SmtUtils]: Spent 7.40s on a formula simplification. DAG size of input: 520 DAG size of output: 408 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 21:07:36,894 WARN L233 SmtUtils]: Spent 8.06s on a formula simplification. DAG size of input: 532 DAG size of output: 431 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 21:07:47,211 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 21:07:47,212 INFO L93 Difference]: Finished difference Result 542 states and 822 transitions. [2022-11-20 21:07:47,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2022-11-20 21:07:47,212 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 16 states have (on average 2.3125) internal successors, (37), 15 states have internal predecessors, (37), 7 states have call successors, (15), 3 states have call predecessors, (15), 3 states have return successors, (12), 7 states have call predecessors, (12), 7 states have call successors, (12) Word has length 70 [2022-11-20 21:07:47,213 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 21:07:47,216 INFO L225 Difference]: With dead ends: 542 [2022-11-20 21:07:47,216 INFO L226 Difference]: Without dead ends: 332 [2022-11-20 21:07:47,217 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 218 GetRequests, 188 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 179 ImplicationChecksByTransitivity, 108.3s TimeCoverageRelationStatistics Valid=134, Invalid=858, Unknown=0, NotChecked=0, Total=992 [2022-11-20 21:07:47,218 INFO L413 NwaCegarLoop]: 229 mSDtfsCounter, 209 mSDsluCounter, 2739 mSDsCounter, 0 mSdLazyCounter, 1960 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 209 SdHoareTripleChecker+Valid, 2968 SdHoareTripleChecker+Invalid, 1983 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 1960 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.6s IncrementalHoareTripleChecker+Time [2022-11-20 21:07:47,219 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [209 Valid, 2968 Invalid, 1983 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [23 Valid, 1960 Invalid, 0 Unknown, 0 Unchecked, 8.6s Time] [2022-11-20 21:07:47,220 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 332 states. [2022-11-20 21:07:47,354 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 332 to 256. [2022-11-20 21:07:47,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 256 states, 164 states have (on average 1.3902439024390243) internal successors, (228), 168 states have internal predecessors, (228), 68 states have call successors, (68), 23 states have call predecessors, (68), 23 states have return successors, (67), 66 states have call predecessors, (67), 67 states have call successors, (67) [2022-11-20 21:07:47,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 256 states to 256 states and 363 transitions. [2022-11-20 21:07:47,357 INFO L78 Accepts]: Start accepts. Automaton has 256 states and 363 transitions. Word has length 70 [2022-11-20 21:07:47,358 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 21:07:47,358 INFO L495 AbstractCegarLoop]: Abstraction has 256 states and 363 transitions. [2022-11-20 21:07:47,359 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 16 states have (on average 2.3125) internal successors, (37), 15 states have internal predecessors, (37), 7 states have call successors, (15), 3 states have call predecessors, (15), 3 states have return successors, (12), 7 states have call predecessors, (12), 7 states have call successors, (12) [2022-11-20 21:07:47,359 INFO L276 IsEmpty]: Start isEmpty. Operand 256 states and 363 transitions. [2022-11-20 21:07:47,360 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2022-11-20 21:07:47,361 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 21:07:47,361 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 21:07:47,369 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6182280d-4178-4163-84e2-ae3bc1306788/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-20 21:07:47,569 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6182280d-4178-4163-84e2-ae3bc1306788/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 21:07:47,569 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 21:07:47,570 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 21:07:47,570 INFO L85 PathProgramCache]: Analyzing trace with hash -1353834432, now seen corresponding path program 1 times [2022-11-20 21:07:47,570 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 21:07:47,570 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [640225118] [2022-11-20 21:07:47,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 21:07:47,570 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 21:07:47,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 21:07:47,737 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-11-20 21:07:47,737 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 21:07:47,738 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [640225118] [2022-11-20 21:07:47,738 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [640225118] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 21:07:47,738 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [182336763] [2022-11-20 21:07:47,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 21:07:47,739 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 21:07:47,739 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6182280d-4178-4163-84e2-ae3bc1306788/bin/utaipan-6cKwYrpEi9/z3 [2022-11-20 21:07:47,740 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6182280d-4178-4163-84e2-ae3bc1306788/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 21:07:47,744 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6182280d-4178-4163-84e2-ae3bc1306788/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-20 21:07:48,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 21:07:48,043 INFO L263 TraceCheckSpWp]: Trace formula consists of 1018 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-20 21:07:48,047 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 21:07:48,081 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-11-20 21:07:48,081 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 21:07:48,144 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-11-20 21:07:48,144 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [182336763] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 21:07:48,144 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [167436082] [2022-11-20 21:07:48,148 INFO L159 IcfgInterpreter]: Started Sifa with 63 locations of interest [2022-11-20 21:07:48,148 INFO L166 IcfgInterpreter]: Building call graph [2022-11-20 21:07:48,149 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-20 21:07:48,149 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-20 21:07:48,150 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-20 21:08:29,746 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 447 for LOIs [2022-11-20 21:08:30,206 INFO L197 IcfgInterpreter]: Interpreting procedure setClientPrivateKey with input of size 446 for LOIs [2022-11-20 21:08:30,493 INFO L197 IcfgInterpreter]: Interpreting procedure sendEmail with input of size 257 for LOIs [2022-11-20 21:08:32,360 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailTo with input of size 237 for LOIs [2022-11-20 21:08:32,409 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing with input of size 259 for LOIs [2022-11-20 21:08:33,238 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing__wrappee__AutoResponder with input of size 266 for LOIs [2022-11-20 21:08:43,461 INFO L197 IcfgInterpreter]: Interpreting procedure getEmailTo with input of size 237 for LOIs [2022-11-20 21:08:43,498 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailFrom with input of size 454 for LOIs [2022-11-20 21:08:44,185 INFO L197 IcfgInterpreter]: Interpreting procedure getClientAddressBookSize with input of size 229 for LOIs [2022-11-20 21:08:44,224 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-20 21:09:14,021 WARN L233 SmtUtils]: Spent 5.02s on a formula simplification. DAG size of input: 468 DAG size of output: 288 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 21:09:24,659 WARN L233 SmtUtils]: Spent 5.01s on a formula simplification. DAG size of input: 490 DAG size of output: 285 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 21:09:46,803 WARN L233 SmtUtils]: Spent 10.67s on a formula simplification. DAG size of input: 587 DAG size of output: 337 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 21:10:07,501 WARN L233 SmtUtils]: Spent 20.36s on a formula simplification. DAG size of input: 589 DAG size of output: 461 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 21:10:13,887 WARN L233 SmtUtils]: Spent 6.06s on a formula simplification. DAG size of input: 569 DAG size of output: 343 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 21:11:14,150 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [167436082] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 21:11:14,150 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-11-20 21:11:14,150 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [49] imperfect sequences [4, 4, 4] total 55 [2022-11-20 21:11:14,150 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [989687188] [2022-11-20 21:11:14,151 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 21:11:14,151 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 50 states [2022-11-20 21:11:14,151 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 21:11:14,152 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2022-11-20 21:11:14,154 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=143, Invalid=2827, Unknown=0, NotChecked=0, Total=2970 [2022-11-20 21:11:14,154 INFO L87 Difference]: Start difference. First operand 256 states and 363 transitions. Second operand has 50 states, 34 states have (on average 1.1764705882352942) internal successors, (40), 31 states have internal predecessors, (40), 16 states have call successors, (16), 10 states have call predecessors, (16), 7 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2022-11-20 21:11:36,150 WARN L233 SmtUtils]: Spent 15.85s on a formula simplification. DAG size of input: 569 DAG size of output: 418 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 21:12:13,666 WARN L233 SmtUtils]: Spent 9.90s on a formula simplification. DAG size of input: 592 DAG size of output: 403 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 21:12:53,655 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 21:12:53,656 INFO L93 Difference]: Finished difference Result 628 states and 944 transitions. [2022-11-20 21:12:53,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2022-11-20 21:12:53,675 INFO L78 Accepts]: Start accepts. Automaton has has 50 states, 34 states have (on average 1.1764705882352942) internal successors, (40), 31 states have internal predecessors, (40), 16 states have call successors, (16), 10 states have call predecessors, (16), 7 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) Word has length 76 [2022-11-20 21:12:53,676 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 21:12:53,687 INFO L225 Difference]: With dead ends: 628 [2022-11-20 21:12:53,687 INFO L226 Difference]: Without dead ends: 418 [2022-11-20 21:12:53,690 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 251 GetRequests, 175 SyntacticMatches, 2 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1183 ImplicationChecksByTransitivity, 222.3s TimeCoverageRelationStatistics Valid=319, Invalid=5381, Unknown=0, NotChecked=0, Total=5700 [2022-11-20 21:12:53,692 INFO L413 NwaCegarLoop]: 221 mSDtfsCounter, 316 mSDsluCounter, 5331 mSDsCounter, 0 mSdLazyCounter, 6798 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 24.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 319 SdHoareTripleChecker+Valid, 5552 SdHoareTripleChecker+Invalid, 6847 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 6798 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 26.4s IncrementalHoareTripleChecker+Time [2022-11-20 21:12:53,693 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [319 Valid, 5552 Invalid, 6847 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [49 Valid, 6798 Invalid, 0 Unknown, 0 Unchecked, 26.4s Time] [2022-11-20 21:12:53,696 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 418 states. [2022-11-20 21:12:53,945 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 418 to 320. [2022-11-20 21:12:53,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 320 states, 213 states have (on average 1.403755868544601) internal successors, (299), 218 states have internal predecessors, (299), 78 states have call successors, (78), 31 states have call predecessors, (78), 28 states have return successors, (77), 72 states have call predecessors, (77), 77 states have call successors, (77) [2022-11-20 21:12:53,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 320 states to 320 states and 454 transitions. [2022-11-20 21:12:53,949 INFO L78 Accepts]: Start accepts. Automaton has 320 states and 454 transitions. Word has length 76 [2022-11-20 21:12:53,949 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 21:12:53,949 INFO L495 AbstractCegarLoop]: Abstraction has 320 states and 454 transitions. [2022-11-20 21:12:53,950 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 50 states, 34 states have (on average 1.1764705882352942) internal successors, (40), 31 states have internal predecessors, (40), 16 states have call successors, (16), 10 states have call predecessors, (16), 7 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2022-11-20 21:12:53,950 INFO L276 IsEmpty]: Start isEmpty. Operand 320 states and 454 transitions. [2022-11-20 21:12:53,951 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-11-20 21:12:53,952 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 21:12:53,952 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 21:12:53,962 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6182280d-4178-4163-84e2-ae3bc1306788/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-20 21:12:54,152 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6182280d-4178-4163-84e2-ae3bc1306788/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 21:12:54,153 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 21:12:54,153 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 21:12:54,153 INFO L85 PathProgramCache]: Analyzing trace with hash -369417964, now seen corresponding path program 1 times [2022-11-20 21:12:54,153 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 21:12:54,153 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [949726690] [2022-11-20 21:12:54,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 21:12:54,154 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 21:12:54,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 21:12:54,335 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-11-20 21:12:54,335 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 21:12:54,335 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [949726690] [2022-11-20 21:12:54,337 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [949726690] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 21:12:54,337 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [979297816] [2022-11-20 21:12:54,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 21:12:54,338 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 21:12:54,338 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6182280d-4178-4163-84e2-ae3bc1306788/bin/utaipan-6cKwYrpEi9/z3 [2022-11-20 21:12:54,339 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6182280d-4178-4163-84e2-ae3bc1306788/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 21:12:54,366 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6182280d-4178-4163-84e2-ae3bc1306788/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-20 21:12:54,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 21:12:54,638 INFO L263 TraceCheckSpWp]: Trace formula consists of 1124 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-20 21:12:54,643 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 21:12:54,668 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-11-20 21:12:54,668 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 21:12:54,749 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-11-20 21:12:54,749 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [979297816] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 21:12:54,749 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [98002022] [2022-11-20 21:12:54,753 INFO L159 IcfgInterpreter]: Started Sifa with 68 locations of interest [2022-11-20 21:12:54,753 INFO L166 IcfgInterpreter]: Building call graph [2022-11-20 21:12:54,754 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-20 21:12:54,754 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-20 21:12:54,754 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-20 21:13:57,543 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 447 for LOIs [2022-11-20 21:13:57,856 INFO L197 IcfgInterpreter]: Interpreting procedure setClientKeyringPublicKey with input of size 238 for LOIs [2022-11-20 21:13:57,923 INFO L197 IcfgInterpreter]: Interpreting procedure setClientKeyringUser with input of size 456 for LOIs [2022-11-20 21:13:58,238 INFO L197 IcfgInterpreter]: Interpreting procedure createClientKeyringEntry with input of size 453 for LOIs [2022-11-20 21:13:58,572 INFO L197 IcfgInterpreter]: Interpreting procedure setClientPrivateKey with input of size 445 for LOIs [2022-11-20 21:13:58,874 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-20 21:14:28,587 WARN L233 SmtUtils]: Spent 5.07s on a formula simplification. DAG size of input: 468 DAG size of output: 288 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 21:14:39,366 WARN L233 SmtUtils]: Spent 5.06s on a formula simplification. DAG size of input: 490 DAG size of output: 285 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 21:15:11,088 WARN L233 SmtUtils]: Spent 20.02s on a formula simplification. DAG size of input: 636 DAG size of output: 514 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 21:15:22,273 WARN L233 SmtUtils]: Spent 10.80s on a formula simplification. DAG size of input: 638 DAG size of output: 408 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 21:15:33,052 WARN L233 SmtUtils]: Spent 5.08s on a formula simplification. DAG size of input: 575 DAG size of output: 341 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 21:15:49,401 WARN L233 SmtUtils]: Spent 7.29s on a formula simplification. DAG size of input: 564 DAG size of output: 346 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 21:16:01,130 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [98002022] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 21:16:01,130 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-11-20 21:16:01,130 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [29] imperfect sequences [4, 4, 4] total 35 [2022-11-20 21:16:01,130 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1529923166] [2022-11-20 21:16:01,131 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 21:16:01,131 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2022-11-20 21:16:01,131 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 21:16:01,132 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2022-11-20 21:16:01,132 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=110, Invalid=1080, Unknown=0, NotChecked=0, Total=1190 [2022-11-20 21:16:01,132 INFO L87 Difference]: Start difference. First operand 320 states and 454 transitions. Second operand has 30 states, 19 states have (on average 2.1052631578947367) internal successors, (40), 18 states have internal predecessors, (40), 10 states have call successors, (18), 6 states have call predecessors, (18), 6 states have return successors, (15), 10 states have call predecessors, (15), 10 states have call successors, (15) [2022-11-20 21:16:12,519 WARN L233 SmtUtils]: Spent 9.29s on a formula simplification. DAG size of input: 623 DAG size of output: 430 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 21:16:29,779 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 21:16:29,779 INFO L93 Difference]: Finished difference Result 650 states and 973 transitions. [2022-11-20 21:16:29,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-11-20 21:16:29,780 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 19 states have (on average 2.1052631578947367) internal successors, (40), 18 states have internal predecessors, (40), 10 states have call successors, (18), 6 states have call predecessors, (18), 6 states have return successors, (15), 10 states have call predecessors, (15), 10 states have call successors, (15) Word has length 79 [2022-11-20 21:16:29,780 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 21:16:29,783 INFO L225 Difference]: With dead ends: 650 [2022-11-20 21:16:29,783 INFO L226 Difference]: Without dead ends: 440 [2022-11-20 21:16:29,785 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 241 GetRequests, 206 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 276 ImplicationChecksByTransitivity, 134.4s TimeCoverageRelationStatistics Valid=128, Invalid=1204, Unknown=0, NotChecked=0, Total=1332 [2022-11-20 21:16:29,785 INFO L413 NwaCegarLoop]: 217 mSDtfsCounter, 207 mSDsluCounter, 3388 mSDsCounter, 0 mSdLazyCounter, 3474 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 15.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 207 SdHoareTripleChecker+Valid, 3605 SdHoareTripleChecker+Invalid, 3490 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 3474 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15.9s IncrementalHoareTripleChecker+Time [2022-11-20 21:16:29,786 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [207 Valid, 3605 Invalid, 3490 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [16 Valid, 3474 Invalid, 0 Unknown, 0 Unchecked, 15.9s Time] [2022-11-20 21:16:29,787 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 440 states. [2022-11-20 21:16:30,061 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 440 to 379. [2022-11-20 21:16:30,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 379 states, 265 states have (on average 1.430188679245283) internal successors, (379), 271 states have internal predecessors, (379), 82 states have call successors, (82), 34 states have call predecessors, (82), 31 states have return successors, (81), 75 states have call predecessors, (81), 81 states have call successors, (81) [2022-11-20 21:16:30,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 379 states to 379 states and 542 transitions. [2022-11-20 21:16:30,064 INFO L78 Accepts]: Start accepts. Automaton has 379 states and 542 transitions. Word has length 79 [2022-11-20 21:16:30,065 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 21:16:30,065 INFO L495 AbstractCegarLoop]: Abstraction has 379 states and 542 transitions. [2022-11-20 21:16:30,065 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 19 states have (on average 2.1052631578947367) internal successors, (40), 18 states have internal predecessors, (40), 10 states have call successors, (18), 6 states have call predecessors, (18), 6 states have return successors, (15), 10 states have call predecessors, (15), 10 states have call successors, (15) [2022-11-20 21:16:30,065 INFO L276 IsEmpty]: Start isEmpty. Operand 379 states and 542 transitions. [2022-11-20 21:16:30,067 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-11-20 21:16:30,067 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 21:16:30,067 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 21:16:30,083 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6182280d-4178-4163-84e2-ae3bc1306788/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-20 21:16:30,275 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6182280d-4178-4163-84e2-ae3bc1306788/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 21:16:30,276 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 21:16:30,276 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 21:16:30,276 INFO L85 PathProgramCache]: Analyzing trace with hash -1566901141, now seen corresponding path program 1 times [2022-11-20 21:16:30,276 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 21:16:30,276 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [503830639] [2022-11-20 21:16:30,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 21:16:30,277 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 21:16:30,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 21:16:30,455 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-11-20 21:16:30,455 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 21:16:30,455 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [503830639] [2022-11-20 21:16:30,456 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [503830639] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 21:16:30,456 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1178665881] [2022-11-20 21:16:30,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 21:16:30,456 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 21:16:30,457 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6182280d-4178-4163-84e2-ae3bc1306788/bin/utaipan-6cKwYrpEi9/z3 [2022-11-20 21:16:30,458 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6182280d-4178-4163-84e2-ae3bc1306788/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 21:16:30,464 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6182280d-4178-4163-84e2-ae3bc1306788/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-20 21:16:30,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 21:16:30,787 INFO L263 TraceCheckSpWp]: Trace formula consists of 1020 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-20 21:16:30,791 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 21:16:30,827 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-11-20 21:16:30,827 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 21:16:30,915 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-11-20 21:16:30,915 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1178665881] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 21:16:30,916 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1732267845] [2022-11-20 21:16:30,919 INFO L159 IcfgInterpreter]: Started Sifa with 67 locations of interest [2022-11-20 21:16:30,919 INFO L166 IcfgInterpreter]: Building call graph [2022-11-20 21:16:30,920 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-20 21:16:30,920 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-20 21:16:30,921 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-20 21:17:07,706 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 447 for LOIs [2022-11-20 21:17:08,000 INFO L197 IcfgInterpreter]: Interpreting procedure setClientPrivateKey with input of size 445 for LOIs [2022-11-20 21:17:08,310 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-20 21:17:38,621 WARN L233 SmtUtils]: Spent 5.25s on a formula simplification. DAG size of input: 468 DAG size of output: 288 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 21:17:49,816 WARN L233 SmtUtils]: Spent 5.23s on a formula simplification. DAG size of input: 490 DAG size of output: 285 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 21:17:55,103 WARN L233 SmtUtils]: Spent 5.06s on a formula simplification. DAG size of input: 502 DAG size of output: 306 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 21:18:01,559 WARN L233 SmtUtils]: Spent 5.10s on a formula simplification. DAG size of input: 512 DAG size of output: 288 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 21:18:23,524 WARN L233 SmtUtils]: Spent 21.61s on a formula simplification. DAG size of input: 601 DAG size of output: 465 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate)