./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/email_spec0_product24.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 8393723b 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_1bc68cc4-46a6-4898-ac39-d9d6e3cc2b26/bin/utaipan-I9t0OCRTmS/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bc68cc4-46a6-4898-ac39-d9d6e3cc2b26/bin/utaipan-I9t0OCRTmS/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bc68cc4-46a6-4898-ac39-d9d6e3cc2b26/bin/utaipan-I9t0OCRTmS/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bc68cc4-46a6-4898-ac39-d9d6e3cc2b26/bin/utaipan-I9t0OCRTmS/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/email_spec0_product24.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bc68cc4-46a6-4898-ac39-d9d6e3cc2b26/bin/utaipan-I9t0OCRTmS/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bc68cc4-46a6-4898-ac39-d9d6e3cc2b26/bin/utaipan-I9t0OCRTmS --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash b453d764da4cb622a1911439b5a79bae9155e32b42a83c5d4472e5a8d62a8d39 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-8393723 [2022-11-19 06:49:25,225 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-19 06:49:25,227 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-19 06:49:25,248 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-19 06:49:25,249 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-19 06:49:25,250 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-19 06:49:25,251 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-19 06:49:25,253 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-19 06:49:25,255 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-19 06:49:25,256 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-19 06:49:25,257 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-19 06:49:25,259 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-19 06:49:25,259 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-19 06:49:25,260 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-19 06:49:25,261 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-19 06:49:25,263 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-19 06:49:25,264 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-19 06:49:25,265 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-19 06:49:25,267 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-19 06:49:25,269 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-19 06:49:25,271 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-19 06:49:25,275 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-19 06:49:25,276 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-19 06:49:25,279 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-19 06:49:25,283 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-19 06:49:25,284 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-19 06:49:25,294 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-19 06:49:25,296 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-19 06:49:25,296 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-19 06:49:25,297 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-19 06:49:25,297 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-19 06:49:25,298 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-19 06:49:25,299 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-19 06:49:25,300 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-19 06:49:25,301 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-19 06:49:25,301 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-19 06:49:25,302 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-19 06:49:25,305 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-19 06:49:25,305 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-19 06:49:25,307 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-19 06:49:25,307 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-19 06:49:25,308 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bc68cc4-46a6-4898-ac39-d9d6e3cc2b26/bin/utaipan-I9t0OCRTmS/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-11-19 06:49:25,344 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-19 06:49:25,351 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-19 06:49:25,352 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-19 06:49:25,352 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-19 06:49:25,353 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-19 06:49:25,354 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-19 06:49:25,354 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-19 06:49:25,354 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-19 06:49:25,354 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-19 06:49:25,354 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-19 06:49:25,356 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-19 06:49:25,356 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-19 06:49:25,356 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-19 06:49:25,356 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-19 06:49:25,356 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-19 06:49:25,357 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-19 06:49:25,357 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-19 06:49:25,357 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-19 06:49:25,358 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-19 06:49:25,358 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-19 06:49:25,358 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-19 06:49:25,358 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-19 06:49:25,359 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-19 06:49:25,361 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-19 06:49:25,361 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-19 06:49:25,361 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-19 06:49:25,361 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-19 06:49:25,362 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-19 06:49:25,362 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-19 06:49:25,362 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-19 06:49:25,362 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-19 06:49:25,363 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-19 06:49:25,363 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-19 06:49:25,364 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-19 06:49:25,364 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-19 06:49:25,365 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-19 06:49:25,365 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-19 06:49:25,365 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-19 06:49:25,365 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-19 06:49:25,365 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-19 06:49:25,366 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-19 06:49:25,366 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_1bc68cc4-46a6-4898-ac39-d9d6e3cc2b26/bin/utaipan-I9t0OCRTmS/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bc68cc4-46a6-4898-ac39-d9d6e3cc2b26/bin/utaipan-I9t0OCRTmS Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b453d764da4cb622a1911439b5a79bae9155e32b42a83c5d4472e5a8d62a8d39 [2022-11-19 06:49:25,656 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-19 06:49:25,683 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-19 06:49:25,686 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-19 06:49:25,688 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-19 06:49:25,689 INFO L275 PluginConnector]: CDTParser initialized [2022-11-19 06:49:25,691 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bc68cc4-46a6-4898-ac39-d9d6e3cc2b26/bin/utaipan-I9t0OCRTmS/../../sv-benchmarks/c/product-lines/email_spec0_product24.cil.c [2022-11-19 06:49:25,771 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bc68cc4-46a6-4898-ac39-d9d6e3cc2b26/bin/utaipan-I9t0OCRTmS/data/cd71b95f8/ef558a5b99374ff9a620ecefa08e178b/FLAG4ed970c05 [2022-11-19 06:49:26,413 INFO L306 CDTParser]: Found 1 translation units. [2022-11-19 06:49:26,414 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bc68cc4-46a6-4898-ac39-d9d6e3cc2b26/sv-benchmarks/c/product-lines/email_spec0_product24.cil.c [2022-11-19 06:49:26,432 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bc68cc4-46a6-4898-ac39-d9d6e3cc2b26/bin/utaipan-I9t0OCRTmS/data/cd71b95f8/ef558a5b99374ff9a620ecefa08e178b/FLAG4ed970c05 [2022-11-19 06:49:26,616 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bc68cc4-46a6-4898-ac39-d9d6e3cc2b26/bin/utaipan-I9t0OCRTmS/data/cd71b95f8/ef558a5b99374ff9a620ecefa08e178b [2022-11-19 06:49:26,618 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-19 06:49:26,620 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-19 06:49:26,622 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-19 06:49:26,622 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-19 06:49:26,630 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-19 06:49:26,630 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 06:49:26" (1/1) ... [2022-11-19 06:49:26,631 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@226a60b6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:49:26, skipping insertion in model container [2022-11-19 06:49:26,632 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 06:49:26" (1/1) ... [2022-11-19 06:49:26,637 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-19 06:49:26,731 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-19 06:49:27,156 WARN L234 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bc68cc4-46a6-4898-ac39-d9d6e3cc2b26/sv-benchmarks/c/product-lines/email_spec0_product24.cil.c[25283,25296] [2022-11-19 06:49:27,338 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-19 06:49:27,358 INFO L203 MainTranslator]: Completed pre-run [2022-11-19 06:49:27,437 WARN L234 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bc68cc4-46a6-4898-ac39-d9d6e3cc2b26/sv-benchmarks/c/product-lines/email_spec0_product24.cil.c[25283,25296] [2022-11-19 06:49:27,504 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-19 06:49:27,530 INFO L208 MainTranslator]: Completed translation [2022-11-19 06:49:27,531 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:49:27 WrapperNode [2022-11-19 06:49:27,531 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-19 06:49:27,532 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-19 06:49:27,532 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-19 06:49:27,532 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-19 06:49:27,540 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:49:27" (1/1) ... [2022-11-19 06:49:27,574 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:49:27" (1/1) ... [2022-11-19 06:49:27,635 INFO L138 Inliner]: procedures = 130, calls = 208, calls flagged for inlining = 64, calls inlined = 59, statements flattened = 1046 [2022-11-19 06:49:27,636 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-19 06:49:27,636 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-19 06:49:27,636 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-19 06:49:27,637 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-19 06:49:27,646 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:49:27" (1/1) ... [2022-11-19 06:49:27,646 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:49:27" (1/1) ... [2022-11-19 06:49:27,650 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:49:27" (1/1) ... [2022-11-19 06:49:27,650 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:49:27" (1/1) ... [2022-11-19 06:49:27,665 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:49:27" (1/1) ... [2022-11-19 06:49:27,673 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:49:27" (1/1) ... [2022-11-19 06:49:27,676 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:49:27" (1/1) ... [2022-11-19 06:49:27,680 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:49:27" (1/1) ... [2022-11-19 06:49:27,686 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-19 06:49:27,687 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-19 06:49:27,687 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-19 06:49:27,687 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-19 06:49:27,688 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:49:27" (1/1) ... [2022-11-19 06:49:27,694 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-19 06:49:27,705 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bc68cc4-46a6-4898-ac39-d9d6e3cc2b26/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 06:49:27,718 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bc68cc4-46a6-4898-ac39-d9d6e3cc2b26/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-19 06:49:27,763 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bc68cc4-46a6-4898-ac39-d9d6e3cc2b26/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-19 06:49:27,790 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2022-11-19 06:49:27,790 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2022-11-19 06:49:27,791 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2022-11-19 06:49:27,791 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2022-11-19 06:49:27,791 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable [2022-11-19 06:49:27,791 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable [2022-11-19 06:49:27,791 INFO L130 BoogieDeclarations]: Found specification of procedure createClientKeyringEntry [2022-11-19 06:49:27,792 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientKeyringEntry [2022-11-19 06:49:27,792 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSignKey [2022-11-19 06:49:27,792 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSignKey [2022-11-19 06:49:27,804 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAdd [2022-11-19 06:49:27,804 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAdd [2022-11-19 06:49:27,804 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2022-11-19 06:49:27,804 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailFrom [2022-11-19 06:49:27,805 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailFrom [2022-11-19 06:49:27,805 INFO L130 BoogieDeclarations]: Found specification of procedure queue [2022-11-19 06:49:27,805 INFO L138 BoogieDeclarations]: Found implementation of procedure queue [2022-11-19 06:49:27,805 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2022-11-19 06:49:27,805 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2022-11-19 06:49:27,805 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-19 06:49:27,805 INFO L130 BoogieDeclarations]: Found specification of procedure isSigned [2022-11-19 06:49:27,805 INFO L138 BoogieDeclarations]: Found implementation of procedure isSigned [2022-11-19 06:49:27,805 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringUser [2022-11-19 06:49:27,805 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringUser [2022-11-19 06:49:27,806 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringPublicKey [2022-11-19 06:49:27,806 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringPublicKey [2022-11-19 06:49:27,806 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2022-11-19 06:49:27,806 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2022-11-19 06:49:27,806 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2022-11-19 06:49:27,807 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2022-11-19 06:49:27,807 INFO L130 BoogieDeclarations]: Found specification of procedure setClientPrivateKey [2022-11-19 06:49:27,807 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientPrivateKey [2022-11-19 06:49:27,807 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailTo [2022-11-19 06:49:27,807 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailTo [2022-11-19 06:49:27,807 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-19 06:49:27,807 INFO L130 BoogieDeclarations]: Found specification of procedure generateKeyPair [2022-11-19 06:49:27,807 INFO L138 BoogieDeclarations]: Found implementation of procedure generateKeyPair [2022-11-19 06:49:27,808 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-19 06:49:27,808 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-19 06:49:28,043 INFO L235 CfgBuilder]: Building ICFG [2022-11-19 06:49:28,045 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-19 06:49:28,888 INFO L276 CfgBuilder]: Performing block encoding [2022-11-19 06:49:29,369 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-19 06:49:29,370 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-19 06:49:29,373 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 06:49:29 BoogieIcfgContainer [2022-11-19 06:49:29,373 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-19 06:49:29,377 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-19 06:49:29,377 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-19 06:49:29,381 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-19 06:49:29,382 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 06:49:26" (1/3) ... [2022-11-19 06:49:29,383 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@eaeaaf1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 06:49:29, skipping insertion in model container [2022-11-19 06:49:29,383 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:49:27" (2/3) ... [2022-11-19 06:49:29,384 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@eaeaaf1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 06:49:29, skipping insertion in model container [2022-11-19 06:49:29,384 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 06:49:29" (3/3) ... [2022-11-19 06:49:29,386 INFO L112 eAbstractionObserver]: Analyzing ICFG email_spec0_product24.cil.c [2022-11-19 06:49:29,407 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-19 06:49:29,407 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-19 06:49:29,463 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-19 06:49:29,475 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;@dd9db87, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-19 06:49:29,476 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-19 06:49:29,480 INFO L276 IsEmpty]: Start isEmpty. Operand has 161 states, 96 states have (on average 1.34375) internal successors, (129), 98 states have internal predecessors, (129), 46 states have call successors, (46), 17 states have call predecessors, (46), 17 states have return successors, (46), 46 states have call predecessors, (46), 46 states have call successors, (46) [2022-11-19 06:49:29,493 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-11-19 06:49:29,493 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 06:49:29,494 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] [2022-11-19 06:49:29,494 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 06:49:29,500 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 06:49:29,500 INFO L85 PathProgramCache]: Analyzing trace with hash -1364414858, now seen corresponding path program 1 times [2022-11-19 06:49:29,510 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 06:49:29,510 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [647987057] [2022-11-19 06:49:29,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:49:29,511 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 06:49:29,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:49:29,985 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-19 06:49:29,985 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 06:49:29,986 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [647987057] [2022-11-19 06:49:29,987 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [647987057] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 06:49:29,987 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 06:49:29,987 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-19 06:49:29,990 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1778606343] [2022-11-19 06:49:29,991 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 06:49:29,997 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-19 06:49:29,999 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 06:49:30,038 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-19 06:49:30,039 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-19 06:49:30,042 INFO L87 Difference]: Start difference. First operand has 161 states, 96 states have (on average 1.34375) internal successors, (129), 98 states have internal predecessors, (129), 46 states have call successors, (46), 17 states have call predecessors, (46), 17 states have return successors, (46), 46 states have call predecessors, (46), 46 states have call successors, (46) Second operand has 2 states, 2 states have (on average 15.5) internal successors, (31), 2 states have internal predecessors, (31), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-11-19 06:49:30,238 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 06:49:30,239 INFO L93 Difference]: Finished difference Result 239 states and 320 transitions. [2022-11-19 06:49:30,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-19 06:49:30,241 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 15.5) internal successors, (31), 2 states have internal predecessors, (31), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 66 [2022-11-19 06:49:30,243 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 06:49:30,267 INFO L225 Difference]: With dead ends: 239 [2022-11-19 06:49:30,268 INFO L226 Difference]: Without dead ends: 158 [2022-11-19 06:49:30,271 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-19 06:49:30,274 INFO L413 NwaCegarLoop]: 186 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 186 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-19 06:49:30,275 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 186 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-19 06:49:30,297 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states. [2022-11-19 06:49:30,346 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 158. [2022-11-19 06:49:30,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 158 states, 94 states have (on average 1.3085106382978724) internal successors, (123), 95 states have internal predecessors, (123), 46 states have call successors, (46), 17 states have call predecessors, (46), 17 states have return successors, (45), 45 states have call predecessors, (45), 45 states have call successors, (45) [2022-11-19 06:49:30,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158 states to 158 states and 214 transitions. [2022-11-19 06:49:30,361 INFO L78 Accepts]: Start accepts. Automaton has 158 states and 214 transitions. Word has length 66 [2022-11-19 06:49:30,363 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 06:49:30,363 INFO L495 AbstractCegarLoop]: Abstraction has 158 states and 214 transitions. [2022-11-19 06:49:30,364 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 15.5) internal successors, (31), 2 states have internal predecessors, (31), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-11-19 06:49:30,364 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states and 214 transitions. [2022-11-19 06:49:30,372 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-11-19 06:49:30,372 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 06:49:30,372 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] [2022-11-19 06:49:30,373 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-19 06:49:30,373 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 06:49:30,374 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 06:49:30,374 INFO L85 PathProgramCache]: Analyzing trace with hash -1593684723, now seen corresponding path program 1 times [2022-11-19 06:49:30,374 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 06:49:30,374 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [921060484] [2022-11-19 06:49:30,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:49:30,375 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 06:49:30,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:49:30,676 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-19 06:49:30,681 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 06:49:30,681 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [921060484] [2022-11-19 06:49:30,682 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [921060484] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 06:49:30,682 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 06:49:30,682 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 06:49:30,682 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [600232157] [2022-11-19 06:49:30,683 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 06:49:30,684 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 06:49:30,685 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 06:49:30,685 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 06:49:30,686 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 06:49:30,686 INFO L87 Difference]: Start difference. First operand 158 states and 214 transitions. Second operand has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-11-19 06:49:30,843 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 06:49:30,844 INFO L93 Difference]: Finished difference Result 235 states and 308 transitions. [2022-11-19 06:49:30,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 06:49:30,845 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 67 [2022-11-19 06:49:30,846 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 06:49:30,850 INFO L225 Difference]: With dead ends: 235 [2022-11-19 06:49:30,850 INFO L226 Difference]: Without dead ends: 160 [2022-11-19 06:49:30,858 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 06:49:30,860 INFO L413 NwaCegarLoop]: 183 mSDtfsCounter, 0 mSDsluCounter, 182 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 365 SdHoareTripleChecker+Invalid, 62 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-19 06:49:30,860 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 365 Invalid, 62 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-19 06:49:30,864 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states. [2022-11-19 06:49:30,878 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 160. [2022-11-19 06:49:30,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 160 states, 96 states have (on average 1.3020833333333333) internal successors, (125), 97 states have internal predecessors, (125), 46 states have call successors, (46), 17 states have call predecessors, (46), 17 states have return successors, (45), 45 states have call predecessors, (45), 45 states have call successors, (45) [2022-11-19 06:49:30,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 216 transitions. [2022-11-19 06:49:30,884 INFO L78 Accepts]: Start accepts. Automaton has 160 states and 216 transitions. Word has length 67 [2022-11-19 06:49:30,884 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 06:49:30,886 INFO L495 AbstractCegarLoop]: Abstraction has 160 states and 216 transitions. [2022-11-19 06:49:30,886 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-11-19 06:49:30,886 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 216 transitions. [2022-11-19 06:49:30,891 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-11-19 06:49:30,892 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 06:49:30,892 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 06:49:30,892 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-19 06:49:30,893 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 06:49:30,893 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 06:49:30,893 INFO L85 PathProgramCache]: Analyzing trace with hash 572048716, now seen corresponding path program 1 times [2022-11-19 06:49:30,893 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 06:49:30,894 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1688603447] [2022-11-19 06:49:30,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:49:30,894 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 06:49:30,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:49:31,064 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-19 06:49:31,064 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 06:49:31,065 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1688603447] [2022-11-19 06:49:31,065 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1688603447] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 06:49:31,066 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 06:49:31,066 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 06:49:31,066 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2117917647] [2022-11-19 06:49:31,066 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 06:49:31,067 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 06:49:31,067 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 06:49:31,068 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 06:49:31,068 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 06:49:31,068 INFO L87 Difference]: Start difference. First operand 160 states and 216 transitions. Second operand has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-11-19 06:49:31,209 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 06:49:31,209 INFO L93 Difference]: Finished difference Result 350 states and 491 transitions. [2022-11-19 06:49:31,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 06:49:31,211 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 72 [2022-11-19 06:49:31,211 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 06:49:31,215 INFO L225 Difference]: With dead ends: 350 [2022-11-19 06:49:31,215 INFO L226 Difference]: Without dead ends: 208 [2022-11-19 06:49:31,219 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 06:49:31,226 INFO L413 NwaCegarLoop]: 198 mSDtfsCounter, 57 mSDsluCounter, 176 mSDsCounter, 0 mSdLazyCounter, 63 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 374 SdHoareTripleChecker+Invalid, 64 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 63 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-19 06:49:31,227 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [72 Valid, 374 Invalid, 64 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 63 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-19 06:49:31,229 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 208 states. [2022-11-19 06:49:31,258 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 208 to 203. [2022-11-19 06:49:31,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 203 states, 128 states have (on average 1.390625) internal successors, (178), 129 states have internal predecessors, (178), 57 states have call successors, (57), 17 states have call predecessors, (57), 17 states have return successors, (56), 56 states have call predecessors, (56), 56 states have call successors, (56) [2022-11-19 06:49:31,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 203 states to 203 states and 291 transitions. [2022-11-19 06:49:31,262 INFO L78 Accepts]: Start accepts. Automaton has 203 states and 291 transitions. Word has length 72 [2022-11-19 06:49:31,263 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 06:49:31,264 INFO L495 AbstractCegarLoop]: Abstraction has 203 states and 291 transitions. [2022-11-19 06:49:31,264 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-11-19 06:49:31,264 INFO L276 IsEmpty]: Start isEmpty. Operand 203 states and 291 transitions. [2022-11-19 06:49:31,268 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2022-11-19 06:49:31,268 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 06:49:31,268 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 06:49:31,268 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-19 06:49:31,269 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 06:49:31,270 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 06:49:31,270 INFO L85 PathProgramCache]: Analyzing trace with hash -699949129, now seen corresponding path program 1 times [2022-11-19 06:49:31,270 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 06:49:31,270 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [189544090] [2022-11-19 06:49:31,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:49:31,271 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 06:49:31,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:49:31,499 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-19 06:49:31,499 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 06:49:31,499 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [189544090] [2022-11-19 06:49:31,499 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [189544090] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-19 06:49:31,500 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [767941914] [2022-11-19 06:49:31,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:49:31,500 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 06:49:31,500 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bc68cc4-46a6-4898-ac39-d9d6e3cc2b26/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 06:49:31,507 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bc68cc4-46a6-4898-ac39-d9d6e3cc2b26/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 06:49:31,527 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bc68cc4-46a6-4898-ac39-d9d6e3cc2b26/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-19 06:49:31,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:49:31,900 INFO L263 TraceCheckSpWp]: Trace formula consists of 1049 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-19 06:49:31,910 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 06:49:31,968 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-19 06:49:31,969 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 06:49:32,044 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-19 06:49:32,044 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [767941914] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 06:49:32,044 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [996418827] [2022-11-19 06:49:32,064 INFO L159 IcfgInterpreter]: Started Sifa with 58 locations of interest [2022-11-19 06:49:32,064 INFO L166 IcfgInterpreter]: Building call graph [2022-11-19 06:49:32,068 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-19 06:49:32,072 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-19 06:49:32,073 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-19 06:50:17,459 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 439 for LOIs [2022-11-19 06:50:17,752 INFO L197 IcfgInterpreter]: Interpreting procedure setClientPrivateKey with input of size 441 for LOIs [2022-11-19 06:50:18,116 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-19 06:51:16,333 WARN L233 SmtUtils]: Spent 11.99s on a formula simplification. DAG size of input: 596 DAG size of output: 348 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 06:51:28,634 WARN L233 SmtUtils]: Spent 11.93s on a formula simplification. DAG size of input: 598 DAG size of output: 348 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 06:51:34,740 WARN L233 SmtUtils]: Spent 5.82s on a formula simplification. DAG size of input: 568 DAG size of output: 348 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 06:51:40,938 WARN L233 SmtUtils]: Spent 5.90s on a formula simplification. DAG size of input: 566 DAG size of output: 346 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 06:51:45,921 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [996418827] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 06:51:45,922 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-11-19 06:51:45,922 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [4, 4, 4] total 26 [2022-11-19 06:51:45,923 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1151232182] [2022-11-19 06:51:45,923 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 06:51:45,923 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-11-19 06:51:45,923 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 06:51:45,924 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-11-19 06:51:45,925 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=572, Unknown=0, NotChecked=0, Total=650 [2022-11-19 06:51:45,925 INFO L87 Difference]: Start difference. First operand 203 states and 291 transitions. Second operand has 21 states, 16 states have (on average 2.3125) internal successors, (37), 15 states have internal predecessors, (37), 7 states have call successors, (15), 3 states have call predecessors, (15), 3 states have return successors, (13), 7 states have call predecessors, (13), 7 states have call successors, (13) [2022-11-19 06:52:11,951 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 06:52:11,951 INFO L93 Difference]: Finished difference Result 489 states and 750 transitions. [2022-11-19 06:52:11,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2022-11-19 06:52:11,952 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 16 states have (on average 2.3125) internal successors, (37), 15 states have internal predecessors, (37), 7 states have call successors, (15), 3 states have call predecessors, (15), 3 states have return successors, (13), 7 states have call predecessors, (13), 7 states have call successors, (13) Word has length 73 [2022-11-19 06:52:11,952 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 06:52:11,956 INFO L225 Difference]: With dead ends: 489 [2022-11-19 06:52:11,956 INFO L226 Difference]: Without dead ends: 304 [2022-11-19 06:52:11,957 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 227 GetRequests, 197 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 179 ImplicationChecksByTransitivity, 106.3s TimeCoverageRelationStatistics Valid=134, Invalid=858, Unknown=0, NotChecked=0, Total=992 [2022-11-19 06:52:11,958 INFO L413 NwaCegarLoop]: 204 mSDtfsCounter, 177 mSDsluCounter, 2502 mSDsCounter, 0 mSdLazyCounter, 1775 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 177 SdHoareTripleChecker+Valid, 2706 SdHoareTripleChecker+Invalid, 1798 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 1775 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.2s IncrementalHoareTripleChecker+Time [2022-11-19 06:52:11,959 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [177 Valid, 2706 Invalid, 1798 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [23 Valid, 1775 Invalid, 0 Unknown, 0 Unchecked, 7.2s Time] [2022-11-19 06:52:11,960 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 304 states. [2022-11-19 06:52:12,102 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 304 to 231. [2022-11-19 06:52:12,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 231 states, 155 states have (on average 1.4) internal successors, (217), 156 states have internal predecessors, (217), 57 states have call successors, (57), 18 states have call predecessors, (57), 18 states have return successors, (56), 56 states have call predecessors, (56), 56 states have call successors, (56) [2022-11-19 06:52:12,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 231 states to 231 states and 330 transitions. [2022-11-19 06:52:12,109 INFO L78 Accepts]: Start accepts. Automaton has 231 states and 330 transitions. Word has length 73 [2022-11-19 06:52:12,110 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 06:52:12,111 INFO L495 AbstractCegarLoop]: Abstraction has 231 states and 330 transitions. [2022-11-19 06:52:12,111 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 16 states have (on average 2.3125) internal successors, (37), 15 states have internal predecessors, (37), 7 states have call successors, (15), 3 states have call predecessors, (15), 3 states have return successors, (13), 7 states have call predecessors, (13), 7 states have call successors, (13) [2022-11-19 06:52:12,111 INFO L276 IsEmpty]: Start isEmpty. Operand 231 states and 330 transitions. [2022-11-19 06:52:12,114 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-11-19 06:52:12,115 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 06:52:12,115 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 06:52:12,128 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bc68cc4-46a6-4898-ac39-d9d6e3cc2b26/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-11-19 06:52:12,328 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bc68cc4-46a6-4898-ac39-d9d6e3cc2b26/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 06:52:12,328 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 06:52:12,328 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 06:52:12,328 INFO L85 PathProgramCache]: Analyzing trace with hash 648584107, now seen corresponding path program 1 times [2022-11-19 06:52:12,328 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 06:52:12,329 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1775399858] [2022-11-19 06:52:12,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:52:12,329 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 06:52:12,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:52:12,519 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-11-19 06:52:12,519 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 06:52:12,520 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1775399858] [2022-11-19 06:52:12,520 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1775399858] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-19 06:52:12,520 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [209813955] [2022-11-19 06:52:12,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:52:12,520 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 06:52:12,521 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bc68cc4-46a6-4898-ac39-d9d6e3cc2b26/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 06:52:12,522 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bc68cc4-46a6-4898-ac39-d9d6e3cc2b26/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 06:52:12,551 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bc68cc4-46a6-4898-ac39-d9d6e3cc2b26/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-19 06:52:12,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:52:12,853 INFO L263 TraceCheckSpWp]: Trace formula consists of 1070 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-19 06:52:12,857 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 06:52:12,896 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-11-19 06:52:12,896 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 06:52:12,986 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-11-19 06:52:12,986 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [209813955] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 06:52:12,986 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1386003124] [2022-11-19 06:52:12,992 INFO L159 IcfgInterpreter]: Started Sifa with 62 locations of interest [2022-11-19 06:52:12,993 INFO L166 IcfgInterpreter]: Building call graph [2022-11-19 06:52:12,995 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-19 06:52:12,995 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-19 06:52:12,995 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-19 06:52:58,608 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 439 for LOIs [2022-11-19 06:52:58,880 INFO L197 IcfgInterpreter]: Interpreting procedure setClientPrivateKey with input of size 450 for LOIs [2022-11-19 06:52:59,168 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-19 06:53:59,753 WARN L233 SmtUtils]: Spent 12.32s on a formula simplification. DAG size of input: 583 DAG size of output: 346 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 06:54:17,096 WARN L233 SmtUtils]: Spent 11.19s on a formula simplification. DAG size of input: 581 DAG size of output: 443 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 06:54:28,613 WARN L233 SmtUtils]: Spent 11.09s on a formula simplification. DAG size of input: 579 DAG size of output: 442 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 06:54:44,322 WARN L233 SmtUtils]: Spent 5.29s on a formula simplification. DAG size of input: 584 DAG size of output: 323 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 06:54:44,505 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [1386003124] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 06:54:44,506 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-11-19 06:54:44,506 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [24] imperfect sequences [4, 4, 4] total 30 [2022-11-19 06:54:44,506 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1152017298] [2022-11-19 06:54:44,506 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 06:54:44,506 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-11-19 06:54:44,507 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 06:54:44,507 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-11-19 06:54:44,507 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=114, Invalid=756, Unknown=0, NotChecked=0, Total=870 [2022-11-19 06:54:44,508 INFO L87 Difference]: Start difference. First operand 231 states and 330 transitions. Second operand has 25 states, 19 states have (on average 2.1052631578947367) internal successors, (40), 18 states have internal predecessors, (40), 8 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (14), 8 states have call predecessors, (14), 8 states have call successors, (14) [2022-11-19 06:55:02,843 WARN L233 SmtUtils]: Spent 6.61s on a formula simplification. DAG size of input: 556 DAG size of output: 369 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 06:55:09,722 WARN L233 SmtUtils]: Spent 6.61s on a formula simplification. DAG size of input: 554 DAG size of output: 367 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 06:55:16,976 WARN L233 SmtUtils]: Spent 6.31s on a formula simplification. DAG size of input: 576 DAG size of output: 365 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 06:55:25,258 WARN L233 SmtUtils]: Spent 7.78s on a formula simplification. DAG size of input: 584 DAG size of output: 374 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 06:55:30,857 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 06:55:30,857 INFO L93 Difference]: Finished difference Result 532 states and 808 transitions. [2022-11-19 06:55:30,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-11-19 06:55:30,858 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 19 states have (on average 2.1052631578947367) internal successors, (40), 18 states have internal predecessors, (40), 8 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (14), 8 states have call predecessors, (14), 8 states have call successors, (14) Word has length 79 [2022-11-19 06:55:30,858 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 06:55:30,860 INFO L225 Difference]: With dead ends: 532 [2022-11-19 06:55:30,861 INFO L226 Difference]: Without dead ends: 347 [2022-11-19 06:55:30,862 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 247 GetRequests, 209 SyntacticMatches, 2 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 285 ImplicationChecksByTransitivity, 143.4s TimeCoverageRelationStatistics Valid=194, Invalid=1212, Unknown=0, NotChecked=0, Total=1406 [2022-11-19 06:55:30,863 INFO L413 NwaCegarLoop]: 200 mSDtfsCounter, 175 mSDsluCounter, 2470 mSDsCounter, 0 mSdLazyCounter, 1913 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 177 SdHoareTripleChecker+Valid, 2670 SdHoareTripleChecker+Invalid, 1942 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 1913 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.9s IncrementalHoareTripleChecker+Time [2022-11-19 06:55:30,863 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [177 Valid, 2670 Invalid, 1942 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [29 Valid, 1913 Invalid, 0 Unknown, 0 Unchecked, 7.9s Time] [2022-11-19 06:55:30,864 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 347 states. [2022-11-19 06:55:31,049 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 347 to 274. [2022-11-19 06:55:31,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 274 states, 195 states have (on average 1.4512820512820512) internal successors, (283), 197 states have internal predecessors, (283), 59 states have call successors, (59), 19 states have call predecessors, (59), 19 states have return successors, (58), 57 states have call predecessors, (58), 58 states have call successors, (58) [2022-11-19 06:55:31,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 274 states to 274 states and 400 transitions. [2022-11-19 06:55:31,052 INFO L78 Accepts]: Start accepts. Automaton has 274 states and 400 transitions. Word has length 79 [2022-11-19 06:55:31,052 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 06:55:31,052 INFO L495 AbstractCegarLoop]: Abstraction has 274 states and 400 transitions. [2022-11-19 06:55:31,052 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 19 states have (on average 2.1052631578947367) internal successors, (40), 18 states have internal predecessors, (40), 8 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (14), 8 states have call predecessors, (14), 8 states have call successors, (14) [2022-11-19 06:55:31,053 INFO L276 IsEmpty]: Start isEmpty. Operand 274 states and 400 transitions. [2022-11-19 06:55:31,054 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2022-11-19 06:55:31,054 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 06:55:31,054 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 06:55:31,061 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bc68cc4-46a6-4898-ac39-d9d6e3cc2b26/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-19 06:55:31,257 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bc68cc4-46a6-4898-ac39-d9d6e3cc2b26/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 06:55:31,257 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 06:55:31,257 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 06:55:31,257 INFO L85 PathProgramCache]: Analyzing trace with hash 1088394456, now seen corresponding path program 1 times [2022-11-19 06:55:31,258 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 06:55:31,258 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1577421976] [2022-11-19 06:55:31,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:55:31,258 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 06:55:31,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:55:31,452 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-19 06:55:31,453 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 06:55:31,453 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1577421976] [2022-11-19 06:55:31,453 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1577421976] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-19 06:55:31,453 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1319009839] [2022-11-19 06:55:31,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:55:31,454 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 06:55:31,454 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bc68cc4-46a6-4898-ac39-d9d6e3cc2b26/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 06:55:31,460 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bc68cc4-46a6-4898-ac39-d9d6e3cc2b26/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 06:55:31,488 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bc68cc4-46a6-4898-ac39-d9d6e3cc2b26/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-19 06:55:31,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:55:31,799 INFO L263 TraceCheckSpWp]: Trace formula consists of 1176 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-19 06:55:31,803 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 06:55:31,829 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-19 06:55:31,830 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 06:55:31,911 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-19 06:55:31,911 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1319009839] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 06:55:31,912 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2659572] [2022-11-19 06:55:31,918 INFO L159 IcfgInterpreter]: Started Sifa with 67 locations of interest [2022-11-19 06:55:31,918 INFO L166 IcfgInterpreter]: Building call graph [2022-11-19 06:55:31,921 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-19 06:55:31,921 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-19 06:55:31,921 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-19 06:56:15,038 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 439 for LOIs [2022-11-19 06:56:15,335 INFO L197 IcfgInterpreter]: Interpreting procedure setClientKeyringPublicKey with input of size 234 for LOIs [2022-11-19 06:56:15,405 INFO L197 IcfgInterpreter]: Interpreting procedure createClientKeyringEntry with input of size 233 for LOIs [2022-11-19 06:56:15,488 INFO L197 IcfgInterpreter]: Interpreting procedure setClientPrivateKey with input of size 441 for LOIs [2022-11-19 06:56:15,783 INFO L197 IcfgInterpreter]: Interpreting procedure setClientKeyringUser with input of size 243 for LOIs [2022-11-19 06:56:15,848 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-19 06:57:21,632 WARN L233 SmtUtils]: Spent 19.83s on a formula simplification. DAG size of input: 636 DAG size of output: 514 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 06:57:32,672 WARN L233 SmtUtils]: Spent 10.67s on a formula simplification. DAG size of input: 638 DAG size of output: 408 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 06:57:54,657 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [2659572] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 06:57:54,657 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-11-19 06:57:54,657 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [29] imperfect sequences [4, 4, 4] total 35 [2022-11-19 06:57:54,658 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2138351520] [2022-11-19 06:57:54,658 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 06:57:54,658 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2022-11-19 06:57:54,658 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 06:57:54,659 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2022-11-19 06:57:54,659 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=110, Invalid=1080, Unknown=0, NotChecked=0, Total=1190 [2022-11-19 06:57:54,660 INFO L87 Difference]: Start difference. First operand 274 states and 400 transitions. Second operand has 30 states, 19 states have (on average 2.1052631578947367) internal successors, (40), 18 states have internal predecessors, (40), 10 states have call successors, (18), 6 states have call predecessors, (18), 6 states have return successors, (16), 10 states have call predecessors, (16), 10 states have call successors, (16) [2022-11-19 06:58:05,211 WARN L233 SmtUtils]: Spent 8.56s on a formula simplification. DAG size of input: 626 DAG size of output: 388 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 06:58:20,414 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 06:58:20,414 INFO L93 Difference]: Finished difference Result 602 states and 927 transitions. [2022-11-19 06:58:20,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-11-19 06:58:20,415 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 19 states have (on average 2.1052631578947367) internal successors, (40), 18 states have internal predecessors, (40), 10 states have call successors, (18), 6 states have call predecessors, (18), 6 states have return successors, (16), 10 states have call predecessors, (16), 10 states have call successors, (16) Word has length 82 [2022-11-19 06:58:20,415 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 06:58:20,417 INFO L225 Difference]: With dead ends: 602 [2022-11-19 06:58:20,418 INFO L226 Difference]: Without dead ends: 417 [2022-11-19 06:58:20,419 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 250 GetRequests, 215 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 276 ImplicationChecksByTransitivity, 110.3s TimeCoverageRelationStatistics Valid=128, Invalid=1204, Unknown=0, NotChecked=0, Total=1332 [2022-11-19 06:58:20,419 INFO L413 NwaCegarLoop]: 200 mSDtfsCounter, 171 mSDsluCounter, 3481 mSDsCounter, 0 mSdLazyCounter, 3369 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 171 SdHoareTripleChecker+Valid, 3681 SdHoareTripleChecker+Invalid, 3385 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 3369 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.6s IncrementalHoareTripleChecker+Time [2022-11-19 06:58:20,421 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [171 Valid, 3681 Invalid, 3385 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [16 Valid, 3369 Invalid, 0 Unknown, 0 Unchecked, 13.6s Time] [2022-11-19 06:58:20,422 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 417 states. [2022-11-19 06:58:20,763 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 417 to 370. [2022-11-19 06:58:20,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 370 states, 284 states have (on average 1.5070422535211268) internal successors, (428), 287 states have internal predecessors, (428), 63 states have call successors, (63), 22 states have call predecessors, (63), 22 states have return successors, (62), 60 states have call predecessors, (62), 62 states have call successors, (62) [2022-11-19 06:58:20,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 370 states to 370 states and 553 transitions. [2022-11-19 06:58:20,766 INFO L78 Accepts]: Start accepts. Automaton has 370 states and 553 transitions. Word has length 82 [2022-11-19 06:58:20,766 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 06:58:20,767 INFO L495 AbstractCegarLoop]: Abstraction has 370 states and 553 transitions. [2022-11-19 06:58:20,767 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 19 states have (on average 2.1052631578947367) internal successors, (40), 18 states have internal predecessors, (40), 10 states have call successors, (18), 6 states have call predecessors, (18), 6 states have return successors, (16), 10 states have call predecessors, (16), 10 states have call successors, (16) [2022-11-19 06:58:20,767 INFO L276 IsEmpty]: Start isEmpty. Operand 370 states and 553 transitions. [2022-11-19 06:58:20,769 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2022-11-19 06:58:20,769 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 06:58:20,769 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 06:58:20,776 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bc68cc4-46a6-4898-ac39-d9d6e3cc2b26/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-19 06:58:20,974 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bc68cc4-46a6-4898-ac39-d9d6e3cc2b26/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2022-11-19 06:58:20,975 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 06:58:20,975 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 06:58:20,975 INFO L85 PathProgramCache]: Analyzing trace with hash 1786798245, now seen corresponding path program 1 times [2022-11-19 06:58:20,975 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 06:58:20,975 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [913350869] [2022-11-19 06:58:20,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:58:20,976 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 06:58:21,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:58:21,102 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-19 06:58:21,102 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 06:58:21,102 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [913350869] [2022-11-19 06:58:21,103 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [913350869] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-19 06:58:21,103 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [519062845] [2022-11-19 06:58:21,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:58:21,103 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 06:58:21,103 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bc68cc4-46a6-4898-ac39-d9d6e3cc2b26/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 06:58:21,104 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bc68cc4-46a6-4898-ac39-d9d6e3cc2b26/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 06:58:21,111 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bc68cc4-46a6-4898-ac39-d9d6e3cc2b26/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-19 06:58:21,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:58:21,412 INFO L263 TraceCheckSpWp]: Trace formula consists of 1081 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-19 06:58:21,416 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 06:58:21,450 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-19 06:58:21,450 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 06:58:21,526 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-19 06:58:21,526 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [519062845] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 06:58:21,527 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1794562285] [2022-11-19 06:58:21,533 INFO L159 IcfgInterpreter]: Started Sifa with 66 locations of interest [2022-11-19 06:58:21,534 INFO L166 IcfgInterpreter]: Building call graph [2022-11-19 06:58:21,535 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-19 06:58:21,535 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-19 06:58:21,535 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-19 06:59:08,195 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 444 for LOIs [2022-11-19 06:59:08,620 INFO L197 IcfgInterpreter]: Interpreting procedure setClientPrivateKey with input of size 441 for LOIs [2022-11-19 06:59:08,916 INFO L197 IcfgInterpreter]: Interpreting procedure sendEmail with input of size 259 for LOIs [2022-11-19 06:59:10,626 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing with input of size 261 for LOIs [2022-11-19 06:59:21,235 INFO L197 IcfgInterpreter]: Interpreting procedure isReadable with input of size 251 for LOIs [2022-11-19 06:59:21,293 INFO L197 IcfgInterpreter]: Interpreting procedure getEmailTo with input of size 251 for LOIs [2022-11-19 06:59:21,351 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailTo with input of size 237 for LOIs [2022-11-19 06:59:21,390 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailFrom with input of size 449 for LOIs [2022-11-19 06:59:22,072 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-19 06:59:39,963 WARN L233 SmtUtils]: Spent 5.14s on a formula simplification. DAG size of input: 467 DAG size of output: 264 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:00:18,842 WARN L233 SmtUtils]: Spent 7.69s on a formula simplification. DAG size of input: 573 DAG size of output: 393 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:00:26,862 WARN L233 SmtUtils]: Spent 7.73s on a formula simplification. DAG size of input: 575 DAG size of output: 395 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:00:41,144 WARN L233 SmtUtils]: Spent 11.18s on a formula simplification. DAG size of input: 583 DAG size of output: 448 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:00:52,557 WARN L233 SmtUtils]: Spent 11.01s on a formula simplification. DAG size of input: 581 DAG size of output: 447 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:00:59,598 WARN L233 SmtUtils]: Spent 6.72s on a formula simplification. DAG size of input: 573 DAG size of output: 368 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:01:06,584 WARN L233 SmtUtils]: Spent 6.65s on a formula simplification. DAG size of input: 571 DAG size of output: 366 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:01:13,691 WARN L233 SmtUtils]: Spent 6.75s on a formula simplification. DAG size of input: 573 DAG size of output: 360 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:01:20,497 WARN L233 SmtUtils]: Spent 6.41s on a formula simplification. DAG size of input: 571 DAG size of output: 358 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:01:26,245 WARN L233 SmtUtils]: Spent 5.33s on a formula simplification. DAG size of input: 573 DAG size of output: 338 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:01:31,967 WARN L233 SmtUtils]: Spent 5.30s on a formula simplification. DAG size of input: 571 DAG size of output: 336 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:01:37,857 WARN L233 SmtUtils]: Spent 5.44s on a formula simplification. DAG size of input: 575 DAG size of output: 340 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:02:17,326 WARN L233 SmtUtils]: Spent 7.40s on a formula simplification. DAG size of input: 567 DAG size of output: 405 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:02:30,252 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [1794562285] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:02:30,252 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-11-19 07:02:30,252 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [50] imperfect sequences [4, 4, 4] total 56 [2022-11-19 07:02:30,252 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2052776833] [2022-11-19 07:02:30,252 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:02:30,253 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 51 states [2022-11-19 07:02:30,253 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:02:30,254 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2022-11-19 07:02:30,255 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=171, Invalid=2909, Unknown=0, NotChecked=0, Total=3080 [2022-11-19 07:02:30,255 INFO L87 Difference]: Start difference. First operand 370 states and 553 transitions. Second operand has 51 states, 36 states have (on average 1.25) internal successors, (45), 34 states have internal predecessors, (45), 14 states have call successors, (15), 8 states have call predecessors, (15), 6 states have return successors, (13), 12 states have call predecessors, (13), 12 states have call successors, (13) [2022-11-19 07:03:00,771 WARN L233 SmtUtils]: Spent 6.81s on a formula simplification. DAG size of input: 565 DAG size of output: 364 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate)