./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/email_spec0_product40.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 4e7fbc69 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_6e52e672-dc62-4493-bafd-c5683f7cc59b/bin/utaipan-Q6hlc19bkW/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e52e672-dc62-4493-bafd-c5683f7cc59b/bin/utaipan-Q6hlc19bkW/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e52e672-dc62-4493-bafd-c5683f7cc59b/bin/utaipan-Q6hlc19bkW/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e52e672-dc62-4493-bafd-c5683f7cc59b/bin/utaipan-Q6hlc19bkW/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/email_spec0_product40.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e52e672-dc62-4493-bafd-c5683f7cc59b/bin/utaipan-Q6hlc19bkW/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e52e672-dc62-4493-bafd-c5683f7cc59b/bin/utaipan-Q6hlc19bkW --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 b2243f2ebf184fce0ef7b08cdc971efef96ae919ab8c33e807ab93ab6dbfb0b7 --- 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-4e7fbc6 [2022-11-23 15:10:09,276 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-23 15:10:09,278 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-23 15:10:09,319 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-23 15:10:09,320 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-23 15:10:09,324 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-23 15:10:09,327 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-23 15:10:09,330 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-23 15:10:09,333 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-23 15:10:09,338 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-23 15:10:09,340 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-23 15:10:09,342 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-23 15:10:09,343 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-23 15:10:09,345 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-23 15:10:09,348 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-23 15:10:09,351 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-23 15:10:09,352 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-23 15:10:09,354 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-23 15:10:09,355 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-23 15:10:09,361 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-23 15:10:09,363 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-23 15:10:09,366 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-23 15:10:09,367 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-23 15:10:09,368 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-23 15:10:09,376 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-23 15:10:09,378 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-23 15:10:09,379 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-23 15:10:09,381 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-23 15:10:09,381 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-23 15:10:09,384 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-23 15:10:09,385 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-23 15:10:09,386 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-23 15:10:09,387 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-23 15:10:09,388 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-23 15:10:09,389 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-23 15:10:09,389 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-23 15:10:09,390 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-23 15:10:09,390 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-23 15:10:09,390 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-23 15:10:09,392 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-23 15:10:09,393 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-23 15:10:09,394 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e52e672-dc62-4493-bafd-c5683f7cc59b/bin/utaipan-Q6hlc19bkW/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-11-23 15:10:09,435 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-23 15:10:09,435 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-23 15:10:09,436 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-23 15:10:09,436 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-23 15:10:09,437 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-23 15:10:09,437 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-23 15:10:09,438 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-23 15:10:09,438 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-23 15:10:09,438 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-23 15:10:09,438 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-23 15:10:09,439 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-23 15:10:09,440 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-23 15:10:09,440 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-23 15:10:09,440 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-23 15:10:09,440 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-23 15:10:09,440 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-23 15:10:09,441 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-23 15:10:09,441 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-23 15:10:09,442 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-23 15:10:09,442 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-23 15:10:09,443 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-23 15:10:09,443 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-23 15:10:09,443 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-23 15:10:09,443 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-23 15:10:09,443 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-23 15:10:09,444 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-23 15:10:09,444 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-23 15:10:09,444 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-23 15:10:09,444 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-23 15:10:09,444 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-23 15:10:09,445 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-23 15:10:09,445 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-23 15:10:09,445 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 15:10:09,446 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-23 15:10:09,446 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-23 15:10:09,446 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-23 15:10:09,446 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-23 15:10:09,446 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-23 15:10:09,447 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-23 15:10:09,447 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-23 15:10:09,447 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-23 15:10:09,448 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_6e52e672-dc62-4493-bafd-c5683f7cc59b/bin/utaipan-Q6hlc19bkW/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e52e672-dc62-4493-bafd-c5683f7cc59b/bin/utaipan-Q6hlc19bkW Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b2243f2ebf184fce0ef7b08cdc971efef96ae919ab8c33e807ab93ab6dbfb0b7 [2022-11-23 15:10:09,758 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-23 15:10:09,779 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-23 15:10:09,782 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-23 15:10:09,783 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-23 15:10:09,784 INFO L275 PluginConnector]: CDTParser initialized [2022-11-23 15:10:09,785 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e52e672-dc62-4493-bafd-c5683f7cc59b/bin/utaipan-Q6hlc19bkW/../../sv-benchmarks/c/product-lines/email_spec0_product40.cil.c [2022-11-23 15:10:12,829 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-23 15:10:13,109 INFO L351 CDTParser]: Found 1 translation units. [2022-11-23 15:10:13,110 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e52e672-dc62-4493-bafd-c5683f7cc59b/sv-benchmarks/c/product-lines/email_spec0_product40.cil.c [2022-11-23 15:10:13,143 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e52e672-dc62-4493-bafd-c5683f7cc59b/bin/utaipan-Q6hlc19bkW/data/ebe8cf66e/1f2e1e6efa7342c1bdc234fceedf5ed8/FLAG7a4479380 [2022-11-23 15:10:13,158 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e52e672-dc62-4493-bafd-c5683f7cc59b/bin/utaipan-Q6hlc19bkW/data/ebe8cf66e/1f2e1e6efa7342c1bdc234fceedf5ed8 [2022-11-23 15:10:13,161 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-23 15:10:13,163 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-23 15:10:13,164 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-23 15:10:13,165 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-23 15:10:13,168 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-23 15:10:13,169 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 03:10:13" (1/1) ... [2022-11-23 15:10:13,171 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5ff8263 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:10:13, skipping insertion in model container [2022-11-23 15:10:13,171 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 03:10:13" (1/1) ... [2022-11-23 15:10:13,179 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-23 15:10:13,246 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-23 15:10:13,667 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_6e52e672-dc62-4493-bafd-c5683f7cc59b/sv-benchmarks/c/product-lines/email_spec0_product40.cil.c[7657,7670] [2022-11-23 15:10:13,900 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 15:10:13,923 INFO L203 MainTranslator]: Completed pre-run [2022-11-23 15:10:13,974 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_6e52e672-dc62-4493-bafd-c5683f7cc59b/sv-benchmarks/c/product-lines/email_spec0_product40.cil.c[7657,7670] [2022-11-23 15:10:14,070 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 15:10:14,101 INFO L208 MainTranslator]: Completed translation [2022-11-23 15:10:14,101 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:10:14 WrapperNode [2022-11-23 15:10:14,102 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-23 15:10:14,103 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-23 15:10:14,103 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-23 15:10:14,103 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-23 15:10:14,111 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:10:14" (1/1) ... [2022-11-23 15:10:14,136 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:10:14" (1/1) ... [2022-11-23 15:10:14,186 INFO L138 Inliner]: procedures = 127, calls = 205, calls flagged for inlining = 52, calls inlined = 49, statements flattened = 907 [2022-11-23 15:10:14,187 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-23 15:10:14,188 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-23 15:10:14,188 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-23 15:10:14,188 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-23 15:10:14,197 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:10:14" (1/1) ... [2022-11-23 15:10:14,198 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:10:14" (1/1) ... [2022-11-23 15:10:14,204 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:10:14" (1/1) ... [2022-11-23 15:10:14,204 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:10:14" (1/1) ... [2022-11-23 15:10:14,226 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:10:14" (1/1) ... [2022-11-23 15:10:14,245 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:10:14" (1/1) ... [2022-11-23 15:10:14,258 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:10:14" (1/1) ... [2022-11-23 15:10:14,261 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:10:14" (1/1) ... [2022-11-23 15:10:14,268 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-23 15:10:14,269 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-23 15:10:14,269 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-23 15:10:14,270 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-23 15:10:14,271 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:10:14" (1/1) ... [2022-11-23 15:10:14,285 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 15:10:14,298 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e52e672-dc62-4493-bafd-c5683f7cc59b/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 15:10:14,320 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e52e672-dc62-4493-bafd-c5683f7cc59b/bin/utaipan-Q6hlc19bkW/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-23 15:10:14,328 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e52e672-dc62-4493-bafd-c5683f7cc59b/bin/utaipan-Q6hlc19bkW/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-23 15:10:14,361 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookSize [2022-11-23 15:10:14,361 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookSize [2022-11-23 15:10:14,361 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookAddress [2022-11-23 15:10:14,362 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookAddress [2022-11-23 15:10:14,362 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2022-11-23 15:10:14,362 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2022-11-23 15:10:14,362 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing__wrappee__AutoResponder [2022-11-23 15:10:14,362 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing__wrappee__AutoResponder [2022-11-23 15:10:14,362 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2022-11-23 15:10:14,362 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2022-11-23 15:10:14,363 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable [2022-11-23 15:10:14,363 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable [2022-11-23 15:10:14,363 INFO L130 BoogieDeclarations]: Found specification of procedure createClientKeyringEntry [2022-11-23 15:10:14,363 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientKeyringEntry [2022-11-23 15:10:14,363 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAdd [2022-11-23 15:10:14,363 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAdd [2022-11-23 15:10:14,363 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2022-11-23 15:10:14,364 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailFrom [2022-11-23 15:10:14,364 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailFrom [2022-11-23 15:10:14,364 INFO L130 BoogieDeclarations]: Found specification of procedure queue [2022-11-23 15:10:14,364 INFO L138 BoogieDeclarations]: Found implementation of procedure queue [2022-11-23 15:10:14,364 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2022-11-23 15:10:14,364 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2022-11-23 15:10:14,365 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-23 15:10:14,365 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookSize [2022-11-23 15:10:14,365 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookSize [2022-11-23 15:10:14,365 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringUser [2022-11-23 15:10:14,365 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringUser [2022-11-23 15:10:14,365 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringPublicKey [2022-11-23 15:10:14,365 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringPublicKey [2022-11-23 15:10:14,366 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2022-11-23 15:10:14,366 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2022-11-23 15:10:14,366 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2022-11-23 15:10:14,366 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2022-11-23 15:10:14,366 INFO L130 BoogieDeclarations]: Found specification of procedure setClientPrivateKey [2022-11-23 15:10:14,366 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientPrivateKey [2022-11-23 15:10:14,366 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailTo [2022-11-23 15:10:14,367 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailTo [2022-11-23 15:10:14,367 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-23 15:10:14,367 INFO L130 BoogieDeclarations]: Found specification of procedure generateKeyPair [2022-11-23 15:10:14,367 INFO L138 BoogieDeclarations]: Found implementation of procedure generateKeyPair [2022-11-23 15:10:14,367 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookAddress [2022-11-23 15:10:14,367 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookAddress [2022-11-23 15:10:14,367 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-23 15:10:14,368 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-23 15:10:14,578 INFO L235 CfgBuilder]: Building ICFG [2022-11-23 15:10:14,580 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-23 15:10:15,651 INFO L276 CfgBuilder]: Performing block encoding [2022-11-23 15:10:16,213 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-23 15:10:16,214 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-23 15:10:16,218 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 03:10:16 BoogieIcfgContainer [2022-11-23 15:10:16,218 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-23 15:10:16,221 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-23 15:10:16,222 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-23 15:10:16,225 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-23 15:10:16,225 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 03:10:13" (1/3) ... [2022-11-23 15:10:16,227 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@68382564 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 03:10:16, skipping insertion in model container [2022-11-23 15:10:16,227 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:10:14" (2/3) ... [2022-11-23 15:10:16,228 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@68382564 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 03:10:16, skipping insertion in model container [2022-11-23 15:10:16,229 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 03:10:16" (3/3) ... [2022-11-23 15:10:16,237 INFO L112 eAbstractionObserver]: Analyzing ICFG email_spec0_product40.cil.c [2022-11-23 15:10:16,257 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-23 15:10:16,258 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-23 15:10:16,330 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-23 15:10:16,339 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;@532c3f6f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-23 15:10:16,340 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-23 15:10:16,346 INFO L276 IsEmpty]: Start isEmpty. Operand has 171 states, 97 states have (on average 1.3195876288659794) internal successors, (128), 100 states have internal predecessors, (128), 52 states have call successors, (52), 20 states have call predecessors, (52), 20 states have return successors, (52), 51 states have call predecessors, (52), 52 states have call successors, (52) [2022-11-23 15:10:16,364 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-11-23 15:10:16,364 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:10:16,365 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] [2022-11-23 15:10:16,366 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 15:10:16,374 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:10:16,374 INFO L85 PathProgramCache]: Analyzing trace with hash -2096607006, now seen corresponding path program 1 times [2022-11-23 15:10:16,386 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:10:16,386 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1784145048] [2022-11-23 15:10:16,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:10:16,387 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:10:16,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:10:16,787 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-23 15:10:16,788 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:10:16,788 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1784145048] [2022-11-23 15:10:16,789 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1784145048] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:10:16,789 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 15:10:16,789 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-23 15:10:16,791 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [749485680] [2022-11-23 15:10:16,792 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:10:16,797 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-23 15:10:16,797 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:10:16,824 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-23 15:10:16,825 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-23 15:10:16,828 INFO L87 Difference]: Start difference. First operand has 171 states, 97 states have (on average 1.3195876288659794) internal successors, (128), 100 states have internal predecessors, (128), 52 states have call successors, (52), 20 states have call predecessors, (52), 20 states have return successors, (52), 51 states have call predecessors, (52), 52 states have call successors, (52) Second operand has 2 states, 2 states have (on average 16.0) internal successors, (32), 2 states have internal predecessors, (32), 2 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-11-23 15:10:17,001 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:10:17,001 INFO L93 Difference]: Finished difference Result 250 states and 335 transitions. [2022-11-23 15:10:17,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-23 15:10:17,004 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 16.0) internal successors, (32), 2 states have internal predecessors, (32), 2 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 67 [2022-11-23 15:10:17,005 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:10:17,020 INFO L225 Difference]: With dead ends: 250 [2022-11-23 15:10:17,020 INFO L226 Difference]: Without dead ends: 168 [2022-11-23 15:10:17,025 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 [2022-11-23 15:10:17,031 INFO L413 NwaCegarLoop]: 196 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 196 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-23 15:10:17,032 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 196 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-23 15:10:17,050 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 168 states. [2022-11-23 15:10:17,103 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 168 to 168. [2022-11-23 15:10:17,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 168 states, 95 states have (on average 1.2842105263157895) internal successors, (122), 97 states have internal predecessors, (122), 52 states have call successors, (52), 20 states have call predecessors, (52), 20 states have return successors, (51), 50 states have call predecessors, (51), 51 states have call successors, (51) [2022-11-23 15:10:17,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 168 states to 168 states and 225 transitions. [2022-11-23 15:10:17,116 INFO L78 Accepts]: Start accepts. Automaton has 168 states and 225 transitions. Word has length 67 [2022-11-23 15:10:17,118 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:10:17,120 INFO L495 AbstractCegarLoop]: Abstraction has 168 states and 225 transitions. [2022-11-23 15:10:17,123 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 16.0) internal successors, (32), 2 states have internal predecessors, (32), 2 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-11-23 15:10:17,124 INFO L276 IsEmpty]: Start isEmpty. Operand 168 states and 225 transitions. [2022-11-23 15:10:17,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-11-23 15:10:17,133 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:10:17,133 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] [2022-11-23 15:10:17,134 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-23 15:10:17,135 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 15:10:17,136 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:10:17,136 INFO L85 PathProgramCache]: Analyzing trace with hash -1417664613, now seen corresponding path program 1 times [2022-11-23 15:10:17,137 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:10:17,138 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1528979821] [2022-11-23 15:10:17,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:10:17,138 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:10:17,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:10:17,365 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-23 15:10:17,366 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:10:17,366 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1528979821] [2022-11-23 15:10:17,366 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1528979821] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:10:17,367 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 15:10:17,367 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 15:10:17,367 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [591961385] [2022-11-23 15:10:17,367 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:10:17,369 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 15:10:17,369 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:10:17,369 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 15:10:17,370 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 15:10:17,370 INFO L87 Difference]: Start difference. First operand 168 states and 225 transitions. Second operand has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 2 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-11-23 15:10:17,523 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:10:17,523 INFO L93 Difference]: Finished difference Result 246 states and 320 transitions. [2022-11-23 15:10:17,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 15:10:17,524 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 2 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 68 [2022-11-23 15:10:17,525 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:10:17,530 INFO L225 Difference]: With dead ends: 246 [2022-11-23 15:10:17,530 INFO L226 Difference]: Without dead ends: 170 [2022-11-23 15:10:17,538 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 [2022-11-23 15:10:17,541 INFO L413 NwaCegarLoop]: 193 mSDtfsCounter, 0 mSDsluCounter, 192 mSDsCounter, 0 mSdLazyCounter, 64 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 385 SdHoareTripleChecker+Invalid, 64 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 64 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-23 15:10:17,541 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 385 Invalid, 64 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 64 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-23 15:10:17,542 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170 states. [2022-11-23 15:10:17,554 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170 to 170. [2022-11-23 15:10:17,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 170 states, 97 states have (on average 1.2783505154639174) internal successors, (124), 99 states have internal predecessors, (124), 52 states have call successors, (52), 20 states have call predecessors, (52), 20 states have return successors, (51), 50 states have call predecessors, (51), 51 states have call successors, (51) [2022-11-23 15:10:17,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 170 states to 170 states and 227 transitions. [2022-11-23 15:10:17,557 INFO L78 Accepts]: Start accepts. Automaton has 170 states and 227 transitions. Word has length 68 [2022-11-23 15:10:17,557 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:10:17,558 INFO L495 AbstractCegarLoop]: Abstraction has 170 states and 227 transitions. [2022-11-23 15:10:17,558 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 2 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-11-23 15:10:17,558 INFO L276 IsEmpty]: Start isEmpty. Operand 170 states and 227 transitions. [2022-11-23 15:10:17,560 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2022-11-23 15:10:17,561 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:10:17,561 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 15:10:17,561 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-23 15:10:17,561 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 15:10:17,562 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:10:17,562 INFO L85 PathProgramCache]: Analyzing trace with hash 406767680, now seen corresponding path program 1 times [2022-11-23 15:10:17,562 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:10:17,562 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1435030169] [2022-11-23 15:10:17,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:10:17,562 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:10:17,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:10:17,738 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-23 15:10:17,738 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:10:17,738 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1435030169] [2022-11-23 15:10:17,738 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1435030169] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:10:17,739 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 15:10:17,739 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 15:10:17,739 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1558656009] [2022-11-23 15:10:17,739 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:10:17,740 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 15:10:17,740 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:10:17,740 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 15:10:17,740 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 15:10:17,741 INFO L87 Difference]: Start difference. First operand 170 states and 227 transitions. Second operand has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 2 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-11-23 15:10:17,909 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:10:17,909 INFO L93 Difference]: Finished difference Result 375 states and 521 transitions. [2022-11-23 15:10:17,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 15:10:17,911 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 2 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 73 [2022-11-23 15:10:17,912 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:10:17,915 INFO L225 Difference]: With dead ends: 375 [2022-11-23 15:10:17,915 INFO L226 Difference]: Without dead ends: 223 [2022-11-23 15:10:17,918 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 [2022-11-23 15:10:17,924 INFO L413 NwaCegarLoop]: 218 mSDtfsCounter, 59 mSDsluCounter, 190 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 77 SdHoareTripleChecker+Valid, 408 SdHoareTripleChecker+Invalid, 68 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 67 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-23 15:10:17,925 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [77 Valid, 408 Invalid, 68 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 67 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-23 15:10:17,927 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 223 states. [2022-11-23 15:10:17,958 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 223 to 218. [2022-11-23 15:10:17,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 218 states, 131 states have (on average 1.366412213740458) internal successors, (179), 133 states have internal predecessors, (179), 66 states have call successors, (66), 20 states have call predecessors, (66), 20 states have return successors, (65), 64 states have call predecessors, (65), 65 states have call successors, (65) [2022-11-23 15:10:17,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 218 states and 310 transitions. [2022-11-23 15:10:17,961 INFO L78 Accepts]: Start accepts. Automaton has 218 states and 310 transitions. Word has length 73 [2022-11-23 15:10:17,961 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:10:17,961 INFO L495 AbstractCegarLoop]: Abstraction has 218 states and 310 transitions. [2022-11-23 15:10:17,962 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 2 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-11-23 15:10:17,962 INFO L276 IsEmpty]: Start isEmpty. Operand 218 states and 310 transitions. [2022-11-23 15:10:17,963 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-11-23 15:10:17,964 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:10:17,964 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 15:10:17,964 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-23 15:10:17,964 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 15:10:17,965 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:10:17,965 INFO L85 PathProgramCache]: Analyzing trace with hash -1636340600, now seen corresponding path program 1 times [2022-11-23 15:10:17,965 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:10:17,965 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1438133257] [2022-11-23 15:10:17,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:10:17,965 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:10:18,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:10:18,206 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-23 15:10:18,206 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:10:18,207 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1438133257] [2022-11-23 15:10:18,207 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1438133257] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 15:10:18,207 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1480147269] [2022-11-23 15:10:18,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:10:18,207 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 15:10:18,208 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e52e672-dc62-4493-bafd-c5683f7cc59b/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 15:10:18,211 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e52e672-dc62-4493-bafd-c5683f7cc59b/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 15:10:18,234 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e52e672-dc62-4493-bafd-c5683f7cc59b/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-23 15:10:18,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:10:18,576 INFO L263 TraceCheckSpWp]: Trace formula consists of 988 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-23 15:10:18,584 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 15:10:18,655 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-23 15:10:18,656 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 15:10:18,750 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-23 15:10:18,751 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1480147269] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 15:10:18,751 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1296048922] [2022-11-23 15:10:18,773 INFO L159 IcfgInterpreter]: Started Sifa with 61 locations of interest [2022-11-23 15:10:18,773 INFO L166 IcfgInterpreter]: Building call graph [2022-11-23 15:10:18,777 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-23 15:10:18,783 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-23 15:10:18,783 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-23 15:10:53,737 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 439 for LOIs [2022-11-23 15:10:54,055 INFO L197 IcfgInterpreter]: Interpreting procedure setClientPrivateKey with input of size 441 for LOIs [2022-11-23 15:10:54,372 INFO L197 IcfgInterpreter]: Interpreting procedure sendEmail with input of size 246 for LOIs [2022-11-23 15:10:56,256 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing with input of size 248 for LOIs [2022-11-23 15:10:57,033 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing__wrappee__AutoResponder with input of size 251 for LOIs [2022-11-23 15:11:00,487 INFO L197 IcfgInterpreter]: Interpreting procedure getEmailTo with input of size 239 for LOIs [2022-11-23 15:11:00,529 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailFrom with input of size 468 for LOIs [2022-11-23 15:11:05,332 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailTo with input of size 236 for LOIs [2022-11-23 15:11:05,372 INFO L197 IcfgInterpreter]: Interpreting procedure getClientAddressBookSize with input of size 228 for LOIs [2022-11-23 15:11:05,415 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-23 15:11:48,150 WARN L233 SmtUtils]: Spent 6.55s on a formula simplification. DAG size of input: 504 DAG size of output: 358 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 15:11:56,321 WARN L233 SmtUtils]: Spent 6.82s on a formula simplification. DAG size of input: 514 DAG size of output: 343 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 15:12:17,338 WARN L233 SmtUtils]: Spent 20.69s on a formula simplification. DAG size of input: 595 DAG size of output: 468 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 15:12:24,225 WARN L233 SmtUtils]: Spent 6.57s on a formula simplification. DAG size of input: 566 DAG size of output: 359 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 15:12:33,635 WARN L233 SmtUtils]: Spent 9.10s on a formula simplification. DAG size of input: 568 DAG size of output: 425 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 15:12:41,328 WARN L233 SmtUtils]: Spent 7.34s on a formula simplification. DAG size of input: 568 DAG size of output: 382 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 15:12:48,918 WARN L233 SmtUtils]: Spent 7.24s on a formula simplification. DAG size of input: 566 DAG size of output: 380 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 15:12:59,583 WARN L233 SmtUtils]: Spent 5.77s on a formula simplification. DAG size of input: 468 DAG size of output: 257 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 15:13:06,728 WARN L233 SmtUtils]: Spent 6.68s on a formula simplification. DAG size of input: 490 DAG size of output: 263 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 15:13:38,482 WARN L233 SmtUtils]: Spent 5.46s on a formula simplification. DAG size of input: 492 DAG size of output: 336 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 15:13:45,617 WARN L233 SmtUtils]: Spent 6.47s on a formula simplification. DAG size of input: 556 DAG size of output: 380 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 15:13:52,730 WARN L233 SmtUtils]: Spent 6.41s on a formula simplification. DAG size of input: 554 DAG size of output: 379 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 15:14:00,254 WARN L233 SmtUtils]: Spent 6.78s on a formula simplification. DAG size of input: 587 DAG size of output: 392 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 15:14:00,264 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [1296048922] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:14:00,265 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-11-23 15:14:00,265 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [47] imperfect sequences [4, 4, 4] total 53 [2022-11-23 15:14:00,265 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [270104968] [2022-11-23 15:14:00,265 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:14:00,266 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2022-11-23 15:14:00,266 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:14:00,267 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2022-11-23 15:14:00,268 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=147, Invalid=2609, Unknown=0, NotChecked=0, Total=2756 [2022-11-23 15:14:00,269 INFO L87 Difference]: Start difference. First operand 218 states and 310 transitions. Second operand has 48 states, 33 states have (on average 1.1515151515151516) internal successors, (38), 30 states have internal predecessors, (38), 15 states have call successors, (16), 10 states have call predecessors, (16), 7 states have return successors, (13), 12 states have call predecessors, (13), 12 states have call successors, (13) [2022-11-23 15:14:13,760 WARN L233 SmtUtils]: Spent 10.57s on a formula simplification. DAG size of input: 524 DAG size of output: 398 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 15:14:19,665 WARN L233 SmtUtils]: Spent 5.52s on a formula simplification. DAG size of input: 467 DAG size of output: 385 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 15:14:45,647 WARN L233 SmtUtils]: Spent 11.38s on a formula simplification. DAG size of input: 533 DAG size of output: 412 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 15:14:59,275 WARN L233 SmtUtils]: Spent 12.28s on a formula simplification. DAG size of input: 593 DAG size of output: 389 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 15:15:24,506 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:15:24,507 INFO L93 Difference]: Finished difference Result 577 states and 888 transitions. [2022-11-23 15:15:24,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2022-11-23 15:15:24,508 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 33 states have (on average 1.1515151515151516) internal successors, (38), 30 states have internal predecessors, (38), 15 states have call successors, (16), 10 states have call predecessors, (16), 7 states have return successors, (13), 12 states have call predecessors, (13), 12 states have call successors, (13) Word has length 74 [2022-11-23 15:15:24,508 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:15:24,511 INFO L225 Difference]: With dead ends: 577 [2022-11-23 15:15:24,511 INFO L226 Difference]: Without dead ends: 377 [2022-11-23 15:15:24,514 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 233 GetRequests, 172 SyntacticMatches, 1 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 824 ImplicationChecksByTransitivity, 232.3s TimeCoverageRelationStatistics Valid=215, Invalid=3567, Unknown=0, NotChecked=0, Total=3782 [2022-11-23 15:15:24,515 INFO L413 NwaCegarLoop]: 234 mSDtfsCounter, 193 mSDsluCounter, 5116 mSDsCounter, 0 mSdLazyCounter, 6651 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 25.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 196 SdHoareTripleChecker+Valid, 5350 SdHoareTripleChecker+Invalid, 6683 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.3s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 6651 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 26.0s IncrementalHoareTripleChecker+Time [2022-11-23 15:15:24,515 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [196 Valid, 5350 Invalid, 6683 Unknown, 0 Unchecked, 0.3s Time], IncrementalHoareTripleChecker [32 Valid, 6651 Invalid, 0 Unknown, 0 Unchecked, 26.0s Time] [2022-11-23 15:15:24,516 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 377 states. [2022-11-23 15:15:24,672 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 377 to 274. [2022-11-23 15:15:24,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 274 states, 173 states have (on average 1.3583815028901733) internal successors, (235), 176 states have internal predecessors, (235), 74 states have call successors, (74), 28 states have call predecessors, (74), 26 states have return successors, (74), 69 states have call predecessors, (74), 73 states have call successors, (74) [2022-11-23 15:15:24,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 274 states to 274 states and 383 transitions. [2022-11-23 15:15:24,676 INFO L78 Accepts]: Start accepts. Automaton has 274 states and 383 transitions. Word has length 74 [2022-11-23 15:15:24,676 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:15:24,676 INFO L495 AbstractCegarLoop]: Abstraction has 274 states and 383 transitions. [2022-11-23 15:15:24,676 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 33 states have (on average 1.1515151515151516) internal successors, (38), 30 states have internal predecessors, (38), 15 states have call successors, (16), 10 states have call predecessors, (16), 7 states have return successors, (13), 12 states have call predecessors, (13), 12 states have call successors, (13) [2022-11-23 15:15:24,677 INFO L276 IsEmpty]: Start isEmpty. Operand 274 states and 383 transitions. [2022-11-23 15:15:24,678 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-11-23 15:15:24,678 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:15:24,679 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 15:15:24,688 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e52e672-dc62-4493-bafd-c5683f7cc59b/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-23 15:15:24,881 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e52e672-dc62-4493-bafd-c5683f7cc59b/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 15:15:24,882 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 15:15:24,882 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:15:24,882 INFO L85 PathProgramCache]: Analyzing trace with hash -232047059, now seen corresponding path program 1 times [2022-11-23 15:15:24,882 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:15:24,882 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [752592235] [2022-11-23 15:15:24,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:15:24,882 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:15:24,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:15:24,993 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-11-23 15:15:24,993 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:15:24,994 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [752592235] [2022-11-23 15:15:24,994 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [752592235] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:15:24,994 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 15:15:24,994 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 15:15:24,995 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [133126450] [2022-11-23 15:15:24,995 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:15:24,995 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 15:15:24,995 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:15:24,996 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 15:15:24,996 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 15:15:24,996 INFO L87 Difference]: Start difference. First operand 274 states and 383 transitions. Second operand has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-11-23 15:15:25,353 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:15:25,353 INFO L93 Difference]: Finished difference Result 650 states and 946 transitions. [2022-11-23 15:15:25,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 15:15:25,356 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 79 [2022-11-23 15:15:25,356 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:15:25,359 INFO L225 Difference]: With dead ends: 650 [2022-11-23 15:15:25,359 INFO L226 Difference]: Without dead ends: 402 [2022-11-23 15:15:25,360 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 [2022-11-23 15:15:25,361 INFO L413 NwaCegarLoop]: 219 mSDtfsCounter, 57 mSDsluCounter, 193 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 75 SdHoareTripleChecker+Valid, 412 SdHoareTripleChecker+Invalid, 68 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 67 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-23 15:15:25,361 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [75 Valid, 412 Invalid, 68 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 67 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-23 15:15:25,362 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 402 states. [2022-11-23 15:15:25,590 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 402 to 395. [2022-11-23 15:15:25,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 395 states, 263 states have (on average 1.4258555133079849) internal successors, (375), 266 states have internal predecessors, (375), 105 states have call successors, (105), 28 states have call predecessors, (105), 26 states have return successors, (105), 100 states have call predecessors, (105), 104 states have call successors, (105) [2022-11-23 15:15:25,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 395 states to 395 states and 585 transitions. [2022-11-23 15:15:25,594 INFO L78 Accepts]: Start accepts. Automaton has 395 states and 585 transitions. Word has length 79 [2022-11-23 15:15:25,595 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:15:25,595 INFO L495 AbstractCegarLoop]: Abstraction has 395 states and 585 transitions. [2022-11-23 15:15:25,595 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-11-23 15:15:25,595 INFO L276 IsEmpty]: Start isEmpty. Operand 395 states and 585 transitions. [2022-11-23 15:15:25,597 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2022-11-23 15:15:25,598 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:15:25,598 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 15:15:25,598 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-23 15:15:25,598 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 15:15:25,598 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:15:25,599 INFO L85 PathProgramCache]: Analyzing trace with hash -1403259784, now seen corresponding path program 1 times [2022-11-23 15:15:25,599 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:15:25,599 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [271728506] [2022-11-23 15:15:25,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:15:25,599 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:15:25,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:15:25,727 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-11-23 15:15:25,727 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:15:25,728 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [271728506] [2022-11-23 15:15:25,728 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [271728506] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 15:15:25,728 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [280432036] [2022-11-23 15:15:25,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:15:25,728 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 15:15:25,728 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e52e672-dc62-4493-bafd-c5683f7cc59b/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 15:15:25,729 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e52e672-dc62-4493-bafd-c5683f7cc59b/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 15:15:25,757 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e52e672-dc62-4493-bafd-c5683f7cc59b/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-23 15:15:26,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:15:26,017 INFO L263 TraceCheckSpWp]: Trace formula consists of 1009 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-23 15:15:26,021 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 15:15:26,048 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-11-23 15:15:26,048 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 15:15:26,117 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-11-23 15:15:26,117 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [280432036] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 15:15:26,117 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [741167198] [2022-11-23 15:15:26,121 INFO L159 IcfgInterpreter]: Started Sifa with 65 locations of interest [2022-11-23 15:15:26,121 INFO L166 IcfgInterpreter]: Building call graph [2022-11-23 15:15:26,122 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-23 15:15:26,122 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-23 15:15:26,122 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-23 15:16:11,018 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 440 for LOIs [2022-11-23 15:16:11,310 INFO L197 IcfgInterpreter]: Interpreting procedure setClientPrivateKey with input of size 450 for LOIs [2022-11-23 15:16:11,613 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-23 15:16:29,125 WARN L233 SmtUtils]: Spent 5.03s on a formula simplification. DAG size of input: 463 DAG size of output: 259 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 15:16:40,079 WARN L233 SmtUtils]: Spent 5.07s on a formula simplification. DAG size of input: 473 DAG size of output: 265 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 15:16:59,744 WARN L233 SmtUtils]: Spent 6.62s on a formula simplification. DAG size of input: 504 DAG size of output: 358 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 15:17:07,937 WARN L233 SmtUtils]: Spent 6.86s on a formula simplification. DAG size of input: 514 DAG size of output: 343 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 15:17:22,341 WARN L233 SmtUtils]: Spent 14.08s on a formula simplification. DAG size of input: 583 DAG size of output: 380 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 15:17:42,173 WARN L233 SmtUtils]: Spent 5.37s on a formula simplification. DAG size of input: 553 DAG size of output: 335 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 15:17:49,396 WARN L233 SmtUtils]: Spent 6.75s on a formula simplification. DAG size of input: 584 DAG size of output: 333 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 15:17:49,402 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [741167198] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:17:49,402 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-11-23 15:17:49,402 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [24] imperfect sequences [4, 4, 4] total 30 [2022-11-23 15:17:49,402 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1742000152] [2022-11-23 15:17:49,403 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:17:49,403 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-11-23 15:17:49,403 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:17:49,404 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-11-23 15:17:49,404 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=110, Invalid=760, Unknown=0, NotChecked=0, Total=870 [2022-11-23 15:17:49,405 INFO L87 Difference]: Start difference. First operand 395 states and 585 transitions. Second operand has 25 states, 19 states have (on average 2.1578947368421053) internal successors, (41), 18 states have internal predecessors, (41), 8 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (14), 8 states have call predecessors, (14), 8 states have call successors, (14) [2022-11-23 15:17:58,924 WARN L233 SmtUtils]: Spent 7.67s on a formula simplification. DAG size of input: 469 DAG size of output: 389 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 15:18:32,755 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:18:32,755 INFO L93 Difference]: Finished difference Result 780 states and 1194 transitions. [2022-11-23 15:18:32,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-11-23 15:18:32,756 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 19 states have (on average 2.1578947368421053) internal successors, (41), 18 states have internal predecessors, (41), 8 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (14), 8 states have call predecessors, (14), 8 states have call successors, (14) Word has length 80 [2022-11-23 15:18:32,757 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:18:32,760 INFO L225 Difference]: With dead ends: 780 [2022-11-23 15:18:32,761 INFO L226 Difference]: Without dead ends: 480 [2022-11-23 15:18:32,762 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 248 GetRequests, 214 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 244 ImplicationChecksByTransitivity, 130.1s TimeCoverageRelationStatistics Valid=169, Invalid=1091, Unknown=0, NotChecked=0, Total=1260 [2022-11-23 15:18:32,763 INFO L413 NwaCegarLoop]: 189 mSDtfsCounter, 93 mSDsluCounter, 2831 mSDsCounter, 0 mSdLazyCounter, 2202 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 93 SdHoareTripleChecker+Valid, 3020 SdHoareTripleChecker+Invalid, 2219 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 2202 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.5s IncrementalHoareTripleChecker+Time [2022-11-23 15:18:32,763 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [93 Valid, 3020 Invalid, 2219 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [17 Valid, 2202 Invalid, 0 Unknown, 0 Unchecked, 10.5s Time] [2022-11-23 15:18:32,765 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 480 states. [2022-11-23 15:18:33,136 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 480 to 425. [2022-11-23 15:18:33,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 425 states, 291 states have (on average 1.429553264604811) internal successors, (416), 294 states have internal predecessors, (416), 106 states have call successors, (106), 29 states have call predecessors, (106), 27 states have return successors, (106), 101 states have call predecessors, (106), 105 states have call successors, (106) [2022-11-23 15:18:33,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 425 states to 425 states and 628 transitions. [2022-11-23 15:18:33,140 INFO L78 Accepts]: Start accepts. Automaton has 425 states and 628 transitions. Word has length 80 [2022-11-23 15:18:33,140 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:18:33,141 INFO L495 AbstractCegarLoop]: Abstraction has 425 states and 628 transitions. [2022-11-23 15:18:33,141 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 19 states have (on average 2.1578947368421053) internal successors, (41), 18 states have internal predecessors, (41), 8 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (14), 8 states have call predecessors, (14), 8 states have call successors, (14) [2022-11-23 15:18:33,141 INFO L276 IsEmpty]: Start isEmpty. Operand 425 states and 628 transitions. [2022-11-23 15:18:33,144 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2022-11-23 15:18:33,145 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:18:33,145 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 15:18:33,155 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e52e672-dc62-4493-bafd-c5683f7cc59b/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-11-23 15:18:33,353 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e52e672-dc62-4493-bafd-c5683f7cc59b/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 15:18:33,354 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 15:18:33,354 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:18:33,354 INFO L85 PathProgramCache]: Analyzing trace with hash 552425912, now seen corresponding path program 1 times [2022-11-23 15:18:33,354 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:18:33,355 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [484677530] [2022-11-23 15:18:33,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:18:33,355 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:18:33,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:18:33,517 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-11-23 15:18:33,518 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:18:33,518 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [484677530] [2022-11-23 15:18:33,518 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [484677530] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 15:18:33,518 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [796555640] [2022-11-23 15:18:33,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:18:33,519 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 15:18:33,519 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e52e672-dc62-4493-bafd-c5683f7cc59b/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 15:18:33,520 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e52e672-dc62-4493-bafd-c5683f7cc59b/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 15:18:33,544 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e52e672-dc62-4493-bafd-c5683f7cc59b/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-23 15:18:33,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:18:33,948 INFO L263 TraceCheckSpWp]: Trace formula consists of 1058 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-23 15:18:33,953 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 15:18:33,987 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-11-23 15:18:33,987 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 15:18:34,077 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-11-23 15:18:34,078 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [796555640] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 15:18:34,078 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [69866436] [2022-11-23 15:18:34,088 INFO L159 IcfgInterpreter]: Started Sifa with 70 locations of interest [2022-11-23 15:18:34,088 INFO L166 IcfgInterpreter]: Building call graph [2022-11-23 15:18:34,089 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-23 15:18:34,089 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-23 15:18:34,090 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-23 15:19:03,441 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 440 for LOIs [2022-11-23 15:19:03,758 INFO L197 IcfgInterpreter]: Interpreting procedure sendEmail with input of size 245 for LOIs [2022-11-23 15:19:05,584 INFO L197 IcfgInterpreter]: Interpreting procedure setClientPrivateKey with input of size 441 for LOIs [2022-11-23 15:19:06,111 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing with input of size 245 for LOIs [2022-11-23 15:19:06,974 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing__wrappee__AutoResponder with input of size 250 for LOIs [2022-11-23 15:19:26,219 INFO L197 IcfgInterpreter]: Interpreting procedure queue with input of size 448 for LOIs [2022-11-23 15:19:26,536 INFO L197 IcfgInterpreter]: Interpreting procedure getEmailFrom with input of size 439 for LOIs [2022-11-23 15:19:26,851 INFO L197 IcfgInterpreter]: Interpreting procedure getEmailTo with input of size 238 for LOIs [2022-11-23 15:19:26,897 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailFrom with input of size 469 for LOIs [2022-11-23 15:19:32,273 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailTo with input of size 470 for LOIs [2022-11-23 15:19:36,084 INFO L197 IcfgInterpreter]: Interpreting procedure getClientAddressBookSize with input of size 227 for LOIs [2022-11-23 15:19:36,125 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-23 15:19:49,423 WARN L233 SmtUtils]: Spent 5.06s on a formula simplification. DAG size of input: 440 DAG size of output: 239 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 15:19:54,965 WARN L233 SmtUtils]: Spent 5.41s on a formula simplification. DAG size of input: 463 DAG size of output: 259 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 15:20:25,014 WARN L233 SmtUtils]: Spent 7.13s on a formula simplification. DAG size of input: 504 DAG size of output: 358 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 15:20:33,298 WARN L233 SmtUtils]: Spent 6.96s on a formula simplification. DAG size of input: 514 DAG size of output: 343 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 15:20:45,869 WARN L233 SmtUtils]: Spent 12.22s on a formula simplification. DAG size of input: 596 DAG size of output: 349 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 15:20:53,335 WARN L233 SmtUtils]: Spent 7.17s on a formula simplification. DAG size of input: 567 DAG size of output: 374 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 15:21:01,229 WARN L233 SmtUtils]: Spent 7.59s on a formula simplification. DAG size of input: 569 DAG size of output: 383 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 15:21:07,203 WARN L233 SmtUtils]: Spent 5.63s on a formula simplification. DAG size of input: 569 DAG size of output: 335 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 15:21:13,059 WARN L233 SmtUtils]: Spent 5.50s on a formula simplification. DAG size of input: 567 DAG size of output: 333 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 15:21:23,987 WARN L233 SmtUtils]: Spent 5.90s on a formula simplification. DAG size of input: 469 DAG size of output: 256 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 15:21:31,565 WARN L233 SmtUtils]: Spent 7.07s on a formula simplification. DAG size of input: 491 DAG size of output: 262 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 15:21:40,131 WARN L233 SmtUtils]: Spent 6.03s on a formula simplification. DAG size of input: 470 DAG size of output: 258 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 15:22:17,566 WARN L233 SmtUtils]: Spent 5.52s on a formula simplification. DAG size of input: 557 DAG size of output: 355 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 15:22:24,100 WARN L233 SmtUtils]: Spent 5.82s on a formula simplification. DAG size of input: 567 DAG size of output: 365 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 15:22:47,713 WARN L233 SmtUtils]: Spent 10.29s on a formula simplification. DAG size of input: 581 DAG size of output: 397 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 15:22:54,070 WARN L233 SmtUtils]: Spent 5.63s on a formula simplification. DAG size of input: 448 DAG size of output: 320 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 15:23:00,518 WARN L233 SmtUtils]: Spent 5.79s on a formula simplification. DAG size of input: 452 DAG size of output: 324 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 15:23:15,450 WARN L233 SmtUtils]: Spent 14.02s on a formula simplification. DAG size of input: 584 DAG size of output: 472 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 15:23:23,387 WARN L233 SmtUtils]: Spent 6.12s on a formula simplification. DAG size of input: 617 DAG size of output: 388 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 15:23:23,391 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [69866436] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:23:23,391 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-11-23 15:23:23,391 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [55] imperfect sequences [4, 4, 4] total 61 [2022-11-23 15:23:23,392 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1869240518] [2022-11-23 15:23:23,392 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:23:23,393 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 56 states [2022-11-23 15:23:23,393 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:23:23,393 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2022-11-23 15:23:23,395 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=165, Invalid=3495, Unknown=0, NotChecked=0, Total=3660 [2022-11-23 15:23:23,395 INFO L87 Difference]: Start difference. First operand 425 states and 628 transitions. Second operand has 56 states, 36 states have (on average 1.1666666666666667) internal successors, (42), 34 states have internal predecessors, (42), 18 states have call successors, (19), 12 states have call predecessors, (19), 9 states have return successors, (16), 15 states have call predecessors, (16), 15 states have call successors, (16)