./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/email_spec7_product33.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version dbf71c69 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9eebe288-26e8-4d9d-bb18-4a1c7a57aa7c/bin/utaipan-G1rejxKTta/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9eebe288-26e8-4d9d-bb18-4a1c7a57aa7c/bin/utaipan-G1rejxKTta/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9eebe288-26e8-4d9d-bb18-4a1c7a57aa7c/bin/utaipan-G1rejxKTta/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9eebe288-26e8-4d9d-bb18-4a1c7a57aa7c/bin/utaipan-G1rejxKTta/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/email_spec7_product33.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9eebe288-26e8-4d9d-bb18-4a1c7a57aa7c/bin/utaipan-G1rejxKTta/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9eebe288-26e8-4d9d-bb18-4a1c7a57aa7c/bin/utaipan-G1rejxKTta --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 f1bf577a04d9efa22571cde3b0a4348a8cf7d4cfe89b0abb5b80fa76df1bbd4f --- 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-dbf71c6-m [2022-10-17 17:37:06,315 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-10-17 17:37:06,317 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-10-17 17:37:06,362 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-10-17 17:37:06,363 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-10-17 17:37:06,368 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-10-17 17:37:06,371 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-10-17 17:37:06,378 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-10-17 17:37:06,381 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-10-17 17:37:06,388 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-10-17 17:37:06,390 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-10-17 17:37:06,394 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-10-17 17:37:06,395 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-10-17 17:37:06,398 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-10-17 17:37:06,400 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-10-17 17:37:06,403 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-10-17 17:37:06,404 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-10-17 17:37:06,406 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-10-17 17:37:06,408 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-10-17 17:37:06,415 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-10-17 17:37:06,418 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-10-17 17:37:06,420 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-10-17 17:37:06,425 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-10-17 17:37:06,426 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-10-17 17:37:06,434 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-10-17 17:37:06,434 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-10-17 17:37:06,435 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-10-17 17:37:06,437 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-10-17 17:37:06,438 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-10-17 17:37:06,439 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-10-17 17:37:06,440 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-10-17 17:37:06,442 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-10-17 17:37:06,444 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-10-17 17:37:06,446 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-10-17 17:37:06,448 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-10-17 17:37:06,448 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-10-17 17:37:06,449 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-10-17 17:37:06,449 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-10-17 17:37:06,450 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-10-17 17:37:06,451 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-10-17 17:37:06,451 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-10-17 17:37:06,452 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9eebe288-26e8-4d9d-bb18-4a1c7a57aa7c/bin/utaipan-G1rejxKTta/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-10-17 17:37:06,501 INFO L113 SettingsManager]: Loading preferences was successful [2022-10-17 17:37:06,501 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-10-17 17:37:06,502 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-10-17 17:37:06,502 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-10-17 17:37:06,503 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-10-17 17:37:06,504 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-10-17 17:37:06,504 INFO L138 SettingsManager]: * User list type=DISABLED [2022-10-17 17:37:06,504 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-10-17 17:37:06,504 INFO L138 SettingsManager]: * Explicit value domain=true [2022-10-17 17:37:06,505 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-10-17 17:37:06,506 INFO L138 SettingsManager]: * Octagon Domain=false [2022-10-17 17:37:06,506 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-10-17 17:37:06,506 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-10-17 17:37:06,507 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-10-17 17:37:06,507 INFO L138 SettingsManager]: * Interval Domain=false [2022-10-17 17:37:06,507 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-10-17 17:37:06,507 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-10-17 17:37:06,508 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-10-17 17:37:06,509 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-10-17 17:37:06,509 INFO L138 SettingsManager]: * sizeof long=4 [2022-10-17 17:37:06,509 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-10-17 17:37:06,509 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-10-17 17:37:06,509 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-10-17 17:37:06,512 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-10-17 17:37:06,512 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-10-17 17:37:06,512 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-10-17 17:37:06,512 INFO L138 SettingsManager]: * sizeof long double=12 [2022-10-17 17:37:06,513 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-10-17 17:37:06,513 INFO L138 SettingsManager]: * Use constant arrays=true [2022-10-17 17:37:06,513 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-10-17 17:37:06,513 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-10-17 17:37:06,514 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-10-17 17:37:06,514 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-17 17:37:06,514 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-10-17 17:37:06,515 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-10-17 17:37:06,515 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-10-17 17:37:06,515 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-10-17 17:37:06,515 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-10-17 17:37:06,516 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-10-17 17:37:06,516 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-10-17 17:37:06,516 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-10-17 17:37:06,516 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_9eebe288-26e8-4d9d-bb18-4a1c7a57aa7c/bin/utaipan-G1rejxKTta/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9eebe288-26e8-4d9d-bb18-4a1c7a57aa7c/bin/utaipan-G1rejxKTta Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f1bf577a04d9efa22571cde3b0a4348a8cf7d4cfe89b0abb5b80fa76df1bbd4f [2022-10-17 17:37:06,779 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-10-17 17:37:06,820 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-10-17 17:37:06,822 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-10-17 17:37:06,823 INFO L271 PluginConnector]: Initializing CDTParser... [2022-10-17 17:37:06,824 INFO L275 PluginConnector]: CDTParser initialized [2022-10-17 17:37:06,825 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9eebe288-26e8-4d9d-bb18-4a1c7a57aa7c/bin/utaipan-G1rejxKTta/../../sv-benchmarks/c/product-lines/email_spec7_product33.cil.c [2022-10-17 17:37:06,901 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9eebe288-26e8-4d9d-bb18-4a1c7a57aa7c/bin/utaipan-G1rejxKTta/data/1a7cf000d/fe61880d41b34dd99653b1b18a28f6fc/FLAGde27d765a [2022-10-17 17:37:07,597 INFO L306 CDTParser]: Found 1 translation units. [2022-10-17 17:37:07,597 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9eebe288-26e8-4d9d-bb18-4a1c7a57aa7c/sv-benchmarks/c/product-lines/email_spec7_product33.cil.c [2022-10-17 17:37:07,621 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9eebe288-26e8-4d9d-bb18-4a1c7a57aa7c/bin/utaipan-G1rejxKTta/data/1a7cf000d/fe61880d41b34dd99653b1b18a28f6fc/FLAGde27d765a [2022-10-17 17:37:07,800 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9eebe288-26e8-4d9d-bb18-4a1c7a57aa7c/bin/utaipan-G1rejxKTta/data/1a7cf000d/fe61880d41b34dd99653b1b18a28f6fc [2022-10-17 17:37:07,802 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-10-17 17:37:07,803 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-10-17 17:37:07,805 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-10-17 17:37:07,805 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-10-17 17:37:07,807 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-10-17 17:37:07,808 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.10 05:37:07" (1/1) ... [2022-10-17 17:37:07,809 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7e91715b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:37:07, skipping insertion in model container [2022-10-17 17:37:07,809 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.10 05:37:07" (1/1) ... [2022-10-17 17:37:07,816 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-10-17 17:37:07,879 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-10-17 17:37:08,316 WARN L230 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_9eebe288-26e8-4d9d-bb18-4a1c7a57aa7c/sv-benchmarks/c/product-lines/email_spec7_product33.cil.c[20852,20865] [2022-10-17 17:37:08,580 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-17 17:37:08,594 INFO L203 MainTranslator]: Completed pre-run [2022-10-17 17:37:08,657 WARN L230 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_9eebe288-26e8-4d9d-bb18-4a1c7a57aa7c/sv-benchmarks/c/product-lines/email_spec7_product33.cil.c[20852,20865] [2022-10-17 17:37:08,716 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-17 17:37:08,764 INFO L208 MainTranslator]: Completed translation [2022-10-17 17:37:08,764 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:37:08 WrapperNode [2022-10-17 17:37:08,764 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-10-17 17:37:08,766 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-10-17 17:37:08,766 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-10-17 17:37:08,766 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-10-17 17:37:08,774 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:37:08" (1/1) ... [2022-10-17 17:37:08,829 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:37:08" (1/1) ... [2022-10-17 17:37:08,911 INFO L138 Inliner]: procedures = 134, calls = 225, calls flagged for inlining = 65, calls inlined = 60, statements flattened = 1057 [2022-10-17 17:37:08,912 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-10-17 17:37:08,912 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-10-17 17:37:08,912 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-10-17 17:37:08,913 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-10-17 17:37:08,922 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:37:08" (1/1) ... [2022-10-17 17:37:08,923 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:37:08" (1/1) ... [2022-10-17 17:37:08,939 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:37:08" (1/1) ... [2022-10-17 17:37:08,940 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:37:08" (1/1) ... [2022-10-17 17:37:08,992 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:37:08" (1/1) ... [2022-10-17 17:37:09,003 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:37:08" (1/1) ... [2022-10-17 17:37:09,025 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:37:08" (1/1) ... [2022-10-17 17:37:09,046 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:37:08" (1/1) ... [2022-10-17 17:37:09,056 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-10-17 17:37:09,057 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-10-17 17:37:09,057 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-10-17 17:37:09,057 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-10-17 17:37:09,059 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:37:08" (1/1) ... [2022-10-17 17:37:09,082 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-17 17:37:09,103 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9eebe288-26e8-4d9d-bb18-4a1c7a57aa7c/bin/utaipan-G1rejxKTta/z3 [2022-10-17 17:37:09,135 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9eebe288-26e8-4d9d-bb18-4a1c7a57aa7c/bin/utaipan-G1rejxKTta/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-10-17 17:37:09,155 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9eebe288-26e8-4d9d-bb18-4a1c7a57aa7c/bin/utaipan-G1rejxKTta/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-10-17 17:37:09,197 INFO L130 BoogieDeclarations]: Found specification of procedure getClientPrivateKey [2022-10-17 17:37:09,198 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientPrivateKey [2022-10-17 17:37:09,198 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailEncryptionKey [2022-10-17 17:37:09,198 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailEncryptionKey [2022-10-17 17:37:09,198 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailEncryptionKey [2022-10-17 17:37:09,198 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailEncryptionKey [2022-10-17 17:37:09,198 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2022-10-17 17:37:09,199 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2022-10-17 17:37:09,199 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2022-10-17 17:37:09,199 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2022-10-17 17:37:09,199 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable [2022-10-17 17:37:09,199 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable [2022-10-17 17:37:09,199 INFO L130 BoogieDeclarations]: Found specification of procedure createClientKeyringEntry [2022-10-17 17:37:09,199 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientKeyringEntry [2022-10-17 17:37:09,200 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsEncrypted [2022-10-17 17:37:09,200 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsEncrypted [2022-10-17 17:37:09,200 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSignKey [2022-10-17 17:37:09,200 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSignKey [2022-10-17 17:37:09,200 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAdd [2022-10-17 17:37:09,200 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAdd [2022-10-17 17:37:09,200 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2022-10-17 17:37:09,201 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailFrom [2022-10-17 17:37:09,201 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailFrom [2022-10-17 17:37:09,201 INFO L130 BoogieDeclarations]: Found specification of procedure queue [2022-10-17 17:37:09,201 INFO L138 BoogieDeclarations]: Found implementation of procedure queue [2022-10-17 17:37:09,201 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2022-10-17 17:37:09,201 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2022-10-17 17:37:09,201 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-10-17 17:37:09,202 INFO L130 BoogieDeclarations]: Found specification of procedure isSigned [2022-10-17 17:37:09,202 INFO L138 BoogieDeclarations]: Found implementation of procedure isSigned [2022-10-17 17:37:09,202 INFO L130 BoogieDeclarations]: Found specification of procedure isKeyPairValid [2022-10-17 17:37:09,202 INFO L138 BoogieDeclarations]: Found implementation of procedure isKeyPairValid [2022-10-17 17:37:09,202 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringUser [2022-10-17 17:37:09,203 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringUser [2022-10-17 17:37:09,203 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringPublicKey [2022-10-17 17:37:09,203 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringPublicKey [2022-10-17 17:37:09,203 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2022-10-17 17:37:09,203 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2022-10-17 17:37:09,203 INFO L130 BoogieDeclarations]: Found specification of procedure findPublicKey [2022-10-17 17:37:09,203 INFO L138 BoogieDeclarations]: Found implementation of procedure findPublicKey [2022-10-17 17:37:09,204 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2022-10-17 17:37:09,204 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2022-10-17 17:37:09,204 INFO L130 BoogieDeclarations]: Found specification of procedure isEncrypted [2022-10-17 17:37:09,204 INFO L138 BoogieDeclarations]: Found implementation of procedure isEncrypted [2022-10-17 17:37:09,204 INFO L130 BoogieDeclarations]: Found specification of procedure setClientPrivateKey [2022-10-17 17:37:09,205 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientPrivateKey [2022-10-17 17:37:09,206 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailTo [2022-10-17 17:37:09,206 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailTo [2022-10-17 17:37:09,207 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-10-17 17:37:09,208 INFO L130 BoogieDeclarations]: Found specification of procedure generateKeyPair [2022-10-17 17:37:09,208 INFO L138 BoogieDeclarations]: Found implementation of procedure generateKeyPair [2022-10-17 17:37:09,208 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-10-17 17:37:09,208 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-10-17 17:37:09,459 INFO L235 CfgBuilder]: Building ICFG [2022-10-17 17:37:09,462 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-10-17 17:37:10,437 INFO L276 CfgBuilder]: Performing block encoding [2022-10-17 17:37:11,023 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-10-17 17:37:11,024 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-10-17 17:37:11,028 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.10 05:37:11 BoogieIcfgContainer [2022-10-17 17:37:11,028 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-10-17 17:37:11,031 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-10-17 17:37:11,031 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-10-17 17:37:11,036 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-10-17 17:37:11,037 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.10 05:37:07" (1/3) ... [2022-10-17 17:37:11,037 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7e1b4f5d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.10 05:37:11, skipping insertion in model container [2022-10-17 17:37:11,038 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:37:08" (2/3) ... [2022-10-17 17:37:11,039 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7e1b4f5d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.10 05:37:11, skipping insertion in model container [2022-10-17 17:37:11,039 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.10 05:37:11" (3/3) ... [2022-10-17 17:37:11,040 INFO L112 eAbstractionObserver]: Analyzing ICFG email_spec7_product33.cil.c [2022-10-17 17:37:11,060 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-10-17 17:37:11,061 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-10-17 17:37:11,138 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-10-17 17:37:11,146 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;@e7a5a96, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-10-17 17:37:11,146 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-10-17 17:37:11,152 INFO L276 IsEmpty]: Start isEmpty. Operand has 209 states, 121 states have (on average 1.3057851239669422) internal successors, (158), 125 states have internal predecessors, (158), 62 states have call successors, (62), 24 states have call predecessors, (62), 24 states have return successors, (62), 62 states have call predecessors, (62), 62 states have call successors, (62) [2022-10-17 17:37:11,166 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-10-17 17:37:11,167 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 17:37:11,167 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 17:37:11,168 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 17:37:11,172 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 17:37:11,173 INFO L85 PathProgramCache]: Analyzing trace with hash -460361428, now seen corresponding path program 1 times [2022-10-17 17:37:11,180 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-10-17 17:37:11,180 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2108001668] [2022-10-17 17:37:11,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 17:37:11,181 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 17:37:11,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 17:37:11,675 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-10-17 17:37:11,676 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-10-17 17:37:11,676 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2108001668] [2022-10-17 17:37:11,681 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2108001668] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 17:37:11,681 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 17:37:11,681 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-10-17 17:37:11,683 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [102112418] [2022-10-17 17:37:11,684 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 17:37:11,690 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-10-17 17:37:11,691 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-10-17 17:37:11,725 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-10-17 17:37:11,727 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-10-17 17:37:11,731 INFO L87 Difference]: Start difference. First operand has 209 states, 121 states have (on average 1.3057851239669422) internal successors, (158), 125 states have internal predecessors, (158), 62 states have call successors, (62), 24 states have call predecessors, (62), 24 states have return successors, (62), 62 states have call predecessors, (62), 62 states have call successors, (62) Second operand has 2 states, 2 states have (on average 18.0) internal successors, (36), 2 states have internal predecessors, (36), 2 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2022-10-17 17:37:11,925 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 17:37:11,926 INFO L93 Difference]: Finished difference Result 335 states and 442 transitions. [2022-10-17 17:37:11,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-10-17 17:37:11,928 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 18.0) internal successors, (36), 2 states have internal predecessors, (36), 2 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 77 [2022-10-17 17:37:11,929 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 17:37:11,950 INFO L225 Difference]: With dead ends: 335 [2022-10-17 17:37:11,951 INFO L226 Difference]: Without dead ends: 206 [2022-10-17 17:37:11,965 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 [2022-10-17 17:37:11,971 INFO L413 NwaCegarLoop]: 239 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 239 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-17 17:37:11,974 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 239 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-17 17:37:12,004 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 206 states. [2022-10-17 17:37:12,054 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 206 to 206. [2022-10-17 17:37:12,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 206 states, 119 states have (on average 1.2773109243697478) internal successors, (152), 122 states have internal predecessors, (152), 62 states have call successors, (62), 24 states have call predecessors, (62), 24 states have return successors, (61), 61 states have call predecessors, (61), 61 states have call successors, (61) [2022-10-17 17:37:12,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 206 states to 206 states and 275 transitions. [2022-10-17 17:37:12,066 INFO L78 Accepts]: Start accepts. Automaton has 206 states and 275 transitions. Word has length 77 [2022-10-17 17:37:12,068 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 17:37:12,068 INFO L495 AbstractCegarLoop]: Abstraction has 206 states and 275 transitions. [2022-10-17 17:37:12,069 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 18.0) internal successors, (36), 2 states have internal predecessors, (36), 2 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2022-10-17 17:37:12,075 INFO L276 IsEmpty]: Start isEmpty. Operand 206 states and 275 transitions. [2022-10-17 17:37:12,081 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-10-17 17:37:12,083 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 17:37:12,084 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 17:37:12,084 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-10-17 17:37:12,084 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 17:37:12,085 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 17:37:12,085 INFO L85 PathProgramCache]: Analyzing trace with hash -1923992268, now seen corresponding path program 1 times [2022-10-17 17:37:12,085 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-10-17 17:37:12,086 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [628566990] [2022-10-17 17:37:12,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 17:37:12,087 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 17:37:12,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 17:37:12,364 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-10-17 17:37:12,364 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-10-17 17:37:12,365 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [628566990] [2022-10-17 17:37:12,365 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [628566990] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 17:37:12,365 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 17:37:12,365 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-10-17 17:37:12,366 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [412534827] [2022-10-17 17:37:12,366 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 17:37:12,367 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-17 17:37:12,368 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-10-17 17:37:12,368 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-17 17:37:12,368 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-17 17:37:12,369 INFO L87 Difference]: Start difference. First operand 206 states and 275 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, (18), 2 states have call predecessors, (18), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2022-10-17 17:37:12,486 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 17:37:12,486 INFO L93 Difference]: Finished difference Result 331 states and 430 transitions. [2022-10-17 17:37:12,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-17 17:37:12,487 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, (18), 2 states have call predecessors, (18), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 78 [2022-10-17 17:37:12,487 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 17:37:12,490 INFO L225 Difference]: With dead ends: 331 [2022-10-17 17:37:12,491 INFO L226 Difference]: Without dead ends: 208 [2022-10-17 17:37:12,492 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 [2022-10-17 17:37:12,493 INFO L413 NwaCegarLoop]: 236 mSDtfsCounter, 0 mSDsluCounter, 272 mSDsCounter, 0 mSdLazyCounter, 78 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 471 SdHoareTripleChecker+Invalid, 78 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 78 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-17 17:37:12,494 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 471 Invalid, 78 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 78 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-17 17:37:12,496 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 208 states. [2022-10-17 17:37:12,513 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 208 to 208. [2022-10-17 17:37:12,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 208 states, 121 states have (on average 1.2727272727272727) internal successors, (154), 124 states have internal predecessors, (154), 62 states have call successors, (62), 24 states have call predecessors, (62), 24 states have return successors, (61), 61 states have call predecessors, (61), 61 states have call successors, (61) [2022-10-17 17:37:12,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 208 states to 208 states and 277 transitions. [2022-10-17 17:37:12,518 INFO L78 Accepts]: Start accepts. Automaton has 208 states and 277 transitions. Word has length 78 [2022-10-17 17:37:12,518 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 17:37:12,518 INFO L495 AbstractCegarLoop]: Abstraction has 208 states and 277 transitions. [2022-10-17 17:37:12,519 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, (18), 2 states have call predecessors, (18), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2022-10-17 17:37:12,519 INFO L276 IsEmpty]: Start isEmpty. Operand 208 states and 277 transitions. [2022-10-17 17:37:12,523 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2022-10-17 17:37:12,523 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 17:37:12,523 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 17:37:12,524 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-10-17 17:37:12,524 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 17:37:12,524 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 17:37:12,524 INFO L85 PathProgramCache]: Analyzing trace with hash 1111025042, now seen corresponding path program 1 times [2022-10-17 17:37:12,525 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-10-17 17:37:12,525 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2054425190] [2022-10-17 17:37:12,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 17:37:12,526 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 17:37:12,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 17:37:12,668 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-10-17 17:37:12,669 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-10-17 17:37:12,669 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2054425190] [2022-10-17 17:37:12,669 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2054425190] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 17:37:12,670 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 17:37:12,670 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-10-17 17:37:12,670 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [862567334] [2022-10-17 17:37:12,670 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 17:37:12,671 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-17 17:37:12,671 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-10-17 17:37:12,672 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-17 17:37:12,672 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-17 17:37:12,672 INFO L87 Difference]: Start difference. First operand 208 states and 277 transitions. Second operand has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 2 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2022-10-17 17:37:12,823 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 17:37:12,823 INFO L93 Difference]: Finished difference Result 446 states and 613 transitions. [2022-10-17 17:37:12,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-17 17:37:12,824 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 2 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 83 [2022-10-17 17:37:12,824 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 17:37:12,827 INFO L225 Difference]: With dead ends: 446 [2022-10-17 17:37:12,827 INFO L226 Difference]: Without dead ends: 256 [2022-10-17 17:37:12,829 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 [2022-10-17 17:37:12,830 INFO L413 NwaCegarLoop]: 255 mSDtfsCounter, 57 mSDsluCounter, 267 mSDsCounter, 0 mSdLazyCounter, 79 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 485 SdHoareTripleChecker+Invalid, 80 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 79 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-17 17:37:12,831 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [72 Valid, 485 Invalid, 80 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 79 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-17 17:37:12,832 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 256 states. [2022-10-17 17:37:12,855 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 256 to 251. [2022-10-17 17:37:12,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 251 states, 153 states have (on average 1.3529411764705883) internal successors, (207), 156 states have internal predecessors, (207), 73 states have call successors, (73), 24 states have call predecessors, (73), 24 states have return successors, (72), 72 states have call predecessors, (72), 72 states have call successors, (72) [2022-10-17 17:37:12,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 251 states to 251 states and 352 transitions. [2022-10-17 17:37:12,859 INFO L78 Accepts]: Start accepts. Automaton has 251 states and 352 transitions. Word has length 83 [2022-10-17 17:37:12,859 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 17:37:12,860 INFO L495 AbstractCegarLoop]: Abstraction has 251 states and 352 transitions. [2022-10-17 17:37:12,860 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 2 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2022-10-17 17:37:12,860 INFO L276 IsEmpty]: Start isEmpty. Operand 251 states and 352 transitions. [2022-10-17 17:37:12,862 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2022-10-17 17:37:12,862 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 17:37:12,863 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 17:37:12,863 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-10-17 17:37:12,863 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 17:37:12,864 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 17:37:12,864 INFO L85 PathProgramCache]: Analyzing trace with hash 309841505, now seen corresponding path program 1 times [2022-10-17 17:37:12,864 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-10-17 17:37:12,864 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [109204690] [2022-10-17 17:37:12,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 17:37:12,865 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 17:37:12,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 17:37:13,121 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-10-17 17:37:13,122 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-10-17 17:37:13,122 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [109204690] [2022-10-17 17:37:13,122 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [109204690] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-17 17:37:13,123 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [298385078] [2022-10-17 17:37:13,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 17:37:13,123 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 17:37:13,123 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9eebe288-26e8-4d9d-bb18-4a1c7a57aa7c/bin/utaipan-G1rejxKTta/z3 [2022-10-17 17:37:13,129 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9eebe288-26e8-4d9d-bb18-4a1c7a57aa7c/bin/utaipan-G1rejxKTta/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-17 17:37:13,135 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9eebe288-26e8-4d9d-bb18-4a1c7a57aa7c/bin/utaipan-G1rejxKTta/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-10-17 17:37:13,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 17:37:13,464 INFO L263 TraceCheckSpWp]: Trace formula consists of 1063 conjuncts, 3 conjunts are in the unsatisfiable core [2022-10-17 17:37:13,492 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 17:37:13,576 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-10-17 17:37:13,576 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-17 17:37:13,681 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-10-17 17:37:13,682 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [298385078] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-17 17:37:13,686 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1431989152] [2022-10-17 17:37:13,712 INFO L159 IcfgInterpreter]: Started Sifa with 69 locations of interest [2022-10-17 17:37:13,712 INFO L166 IcfgInterpreter]: Building call graph [2022-10-17 17:37:13,717 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-10-17 17:37:13,722 INFO L176 IcfgInterpreter]: Starting interpretation [2022-10-17 17:37:13,726 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs