./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/email_spec1_product33.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5e519f3a 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_3ad2af8c-b2a8-4a17-a879-bfee31dfe368/bin/utaipan-7li7fVZpFI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ad2af8c-b2a8-4a17-a879-bfee31dfe368/bin/utaipan-7li7fVZpFI/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ad2af8c-b2a8-4a17-a879-bfee31dfe368/bin/utaipan-7li7fVZpFI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ad2af8c-b2a8-4a17-a879-bfee31dfe368/bin/utaipan-7li7fVZpFI/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/email_spec1_product33.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ad2af8c-b2a8-4a17-a879-bfee31dfe368/bin/utaipan-7li7fVZpFI/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ad2af8c-b2a8-4a17-a879-bfee31dfe368/bin/utaipan-7li7fVZpFI --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 00f3978296386b105e45bba586b0df56f2d34b783492fc63d6fdcb596a8910f4 --- 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-5e519f3 [2022-11-03 02:14:47,279 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-03 02:14:47,281 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-03 02:14:47,330 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-03 02:14:47,331 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-03 02:14:47,335 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-03 02:14:47,338 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-03 02:14:47,343 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-03 02:14:47,346 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-03 02:14:47,355 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-03 02:14:47,356 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-03 02:14:47,357 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-03 02:14:47,357 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-03 02:14:47,358 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-03 02:14:47,359 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-03 02:14:47,360 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-03 02:14:47,361 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-03 02:14:47,362 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-03 02:14:47,364 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-03 02:14:47,365 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-03 02:14:47,369 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-03 02:14:47,371 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-03 02:14:47,375 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-03 02:14:47,376 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-03 02:14:47,389 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-03 02:14:47,390 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-03 02:14:47,390 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-03 02:14:47,392 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-03 02:14:47,393 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-03 02:14:47,394 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-03 02:14:47,394 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-03 02:14:47,395 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-03 02:14:47,397 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-03 02:14:47,398 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-03 02:14:47,400 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-03 02:14:47,400 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-03 02:14:47,401 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-03 02:14:47,401 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-03 02:14:47,401 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-03 02:14:47,402 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-03 02:14:47,403 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-03 02:14:47,404 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ad2af8c-b2a8-4a17-a879-bfee31dfe368/bin/utaipan-7li7fVZpFI/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-11-03 02:14:47,449 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-03 02:14:47,449 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-03 02:14:47,450 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-03 02:14:47,450 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-03 02:14:47,451 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-03 02:14:47,452 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-03 02:14:47,452 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-03 02:14:47,452 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-03 02:14:47,452 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-03 02:14:47,452 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-03 02:14:47,453 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-03 02:14:47,454 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-03 02:14:47,454 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-03 02:14:47,454 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-03 02:14:47,454 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-03 02:14:47,455 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-03 02:14:47,455 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-03 02:14:47,455 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-03 02:14:47,456 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-03 02:14:47,456 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-03 02:14:47,456 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-03 02:14:47,456 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-03 02:14:47,457 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-03 02:14:47,457 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-03 02:14:47,457 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-03 02:14:47,457 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-03 02:14:47,457 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-03 02:14:47,458 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-03 02:14:47,458 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-03 02:14:47,458 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-03 02:14:47,458 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-03 02:14:47,459 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-03 02:14:47,459 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 02:14:47,459 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-03 02:14:47,460 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-03 02:14:47,460 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-03 02:14:47,460 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-03 02:14:47,460 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-03 02:14:47,460 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-03 02:14:47,461 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-03 02:14:47,461 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-03 02:14:47,461 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_3ad2af8c-b2a8-4a17-a879-bfee31dfe368/bin/utaipan-7li7fVZpFI/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ad2af8c-b2a8-4a17-a879-bfee31dfe368/bin/utaipan-7li7fVZpFI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 00f3978296386b105e45bba586b0df56f2d34b783492fc63d6fdcb596a8910f4 [2022-11-03 02:14:47,782 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-03 02:14:47,822 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-03 02:14:47,825 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-03 02:14:47,826 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-03 02:14:47,830 INFO L275 PluginConnector]: CDTParser initialized [2022-11-03 02:14:47,832 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ad2af8c-b2a8-4a17-a879-bfee31dfe368/bin/utaipan-7li7fVZpFI/../../sv-benchmarks/c/product-lines/email_spec1_product33.cil.c [2022-11-03 02:14:47,911 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ad2af8c-b2a8-4a17-a879-bfee31dfe368/bin/utaipan-7li7fVZpFI/data/418ca7981/f203c3673bf54192bac211362ca46ffe/FLAGf83ac2e9d [2022-11-03 02:14:48,509 INFO L306 CDTParser]: Found 1 translation units. [2022-11-03 02:14:48,509 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ad2af8c-b2a8-4a17-a879-bfee31dfe368/sv-benchmarks/c/product-lines/email_spec1_product33.cil.c [2022-11-03 02:14:48,538 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ad2af8c-b2a8-4a17-a879-bfee31dfe368/bin/utaipan-7li7fVZpFI/data/418ca7981/f203c3673bf54192bac211362ca46ffe/FLAGf83ac2e9d [2022-11-03 02:14:48,729 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ad2af8c-b2a8-4a17-a879-bfee31dfe368/bin/utaipan-7li7fVZpFI/data/418ca7981/f203c3673bf54192bac211362ca46ffe [2022-11-03 02:14:48,733 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-03 02:14:48,736 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-03 02:14:48,740 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-03 02:14:48,740 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-03 02:14:48,743 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-03 02:14:48,744 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 02:14:48" (1/1) ... [2022-11-03 02:14:48,745 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@571ced39 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:14:48, skipping insertion in model container [2022-11-03 02:14:48,745 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 02:14:48" (1/1) ... [2022-11-03 02:14:48,753 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-03 02:14:48,844 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-03 02:14:49,032 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_3ad2af8c-b2a8-4a17-a879-bfee31dfe368/sv-benchmarks/c/product-lines/email_spec1_product33.cil.c[1542,1555] [2022-11-03 02:14:49,488 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 02:14:49,510 INFO L203 MainTranslator]: Completed pre-run [2022-11-03 02:14:49,531 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_3ad2af8c-b2a8-4a17-a879-bfee31dfe368/sv-benchmarks/c/product-lines/email_spec1_product33.cil.c[1542,1555] [2022-11-03 02:14:49,664 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 02:14:49,708 INFO L208 MainTranslator]: Completed translation [2022-11-03 02:14:49,709 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:14:49 WrapperNode [2022-11-03 02:14:49,709 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-03 02:14:49,711 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-03 02:14:49,711 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-03 02:14:49,711 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-03 02:14:49,721 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:14:49" (1/1) ... [2022-11-03 02:14:49,783 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:14:49" (1/1) ... [2022-11-03 02:14:49,867 INFO L138 Inliner]: procedures = 134, calls = 228, calls flagged for inlining = 65, calls inlined = 60, statements flattened = 1070 [2022-11-03 02:14:49,867 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-03 02:14:49,868 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-03 02:14:49,868 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-03 02:14:49,868 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-03 02:14:49,885 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:14:49" (1/1) ... [2022-11-03 02:14:49,885 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:14:49" (1/1) ... [2022-11-03 02:14:49,927 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:14:49" (1/1) ... [2022-11-03 02:14:49,927 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:14:49" (1/1) ... [2022-11-03 02:14:49,970 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:14:49" (1/1) ... [2022-11-03 02:14:49,986 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:14:49" (1/1) ... [2022-11-03 02:14:49,990 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:14:49" (1/1) ... [2022-11-03 02:14:49,995 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:14:49" (1/1) ... [2022-11-03 02:14:50,001 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-03 02:14:50,002 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-03 02:14:50,003 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-03 02:14:50,003 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-03 02:14:50,004 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:14:49" (1/1) ... [2022-11-03 02:14:50,010 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 02:14:50,031 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ad2af8c-b2a8-4a17-a879-bfee31dfe368/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:14:50,052 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ad2af8c-b2a8-4a17-a879-bfee31dfe368/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-03 02:14:50,082 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ad2af8c-b2a8-4a17-a879-bfee31dfe368/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-03 02:14:50,103 INFO L130 BoogieDeclarations]: Found specification of procedure getClientPrivateKey [2022-11-03 02:14:50,103 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientPrivateKey [2022-11-03 02:14:50,103 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailEncryptionKey [2022-11-03 02:14:50,104 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailEncryptionKey [2022-11-03 02:14:50,104 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailEncryptionKey [2022-11-03 02:14:50,104 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailEncryptionKey [2022-11-03 02:14:50,104 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2022-11-03 02:14:50,104 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2022-11-03 02:14:50,104 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2022-11-03 02:14:50,104 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2022-11-03 02:14:50,104 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable [2022-11-03 02:14:50,105 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable [2022-11-03 02:14:50,105 INFO L130 BoogieDeclarations]: Found specification of procedure createClientKeyringEntry [2022-11-03 02:14:50,105 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientKeyringEntry [2022-11-03 02:14:50,105 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsEncrypted [2022-11-03 02:14:50,105 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsEncrypted [2022-11-03 02:14:50,105 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSignKey [2022-11-03 02:14:50,105 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSignKey [2022-11-03 02:14:50,106 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAdd [2022-11-03 02:14:50,106 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAdd [2022-11-03 02:14:50,106 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2022-11-03 02:14:50,106 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailFrom [2022-11-03 02:14:50,106 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailFrom [2022-11-03 02:14:50,106 INFO L130 BoogieDeclarations]: Found specification of procedure queue [2022-11-03 02:14:50,106 INFO L138 BoogieDeclarations]: Found implementation of procedure queue [2022-11-03 02:14:50,107 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2022-11-03 02:14:50,107 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2022-11-03 02:14:50,107 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-03 02:14:50,107 INFO L130 BoogieDeclarations]: Found specification of procedure isSigned [2022-11-03 02:14:50,108 INFO L138 BoogieDeclarations]: Found implementation of procedure isSigned [2022-11-03 02:14:50,110 INFO L130 BoogieDeclarations]: Found specification of procedure isKeyPairValid [2022-11-03 02:14:50,110 INFO L138 BoogieDeclarations]: Found implementation of procedure isKeyPairValid [2022-11-03 02:14:50,110 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringUser [2022-11-03 02:14:50,110 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringUser [2022-11-03 02:14:50,110 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringPublicKey [2022-11-03 02:14:50,110 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringPublicKey [2022-11-03 02:14:50,111 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2022-11-03 02:14:50,111 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2022-11-03 02:14:50,111 INFO L130 BoogieDeclarations]: Found specification of procedure findPublicKey [2022-11-03 02:14:50,111 INFO L138 BoogieDeclarations]: Found implementation of procedure findPublicKey [2022-11-03 02:14:50,111 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2022-11-03 02:14:50,111 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2022-11-03 02:14:50,112 INFO L130 BoogieDeclarations]: Found specification of procedure isEncrypted [2022-11-03 02:14:50,112 INFO L138 BoogieDeclarations]: Found implementation of procedure isEncrypted [2022-11-03 02:14:50,112 INFO L130 BoogieDeclarations]: Found specification of procedure setClientPrivateKey [2022-11-03 02:14:50,113 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientPrivateKey [2022-11-03 02:14:50,114 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailTo [2022-11-03 02:14:50,114 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailTo [2022-11-03 02:14:50,115 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-03 02:14:50,116 INFO L130 BoogieDeclarations]: Found specification of procedure generateKeyPair [2022-11-03 02:14:50,116 INFO L138 BoogieDeclarations]: Found implementation of procedure generateKeyPair [2022-11-03 02:14:50,116 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-03 02:14:50,116 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-03 02:14:50,376 INFO L235 CfgBuilder]: Building ICFG [2022-11-03 02:14:50,379 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-03 02:14:51,445 INFO L276 CfgBuilder]: Performing block encoding [2022-11-03 02:14:52,046 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-03 02:14:52,047 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-03 02:14:52,051 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 02:14:52 BoogieIcfgContainer [2022-11-03 02:14:52,051 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-03 02:14:52,054 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-03 02:14:52,055 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-03 02:14:52,059 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-03 02:14:52,059 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 02:14:48" (1/3) ... [2022-11-03 02:14:52,060 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7499f7da and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 02:14:52, skipping insertion in model container [2022-11-03 02:14:52,060 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:14:49" (2/3) ... [2022-11-03 02:14:52,060 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7499f7da and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 02:14:52, skipping insertion in model container [2022-11-03 02:14:52,061 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 02:14:52" (3/3) ... [2022-11-03 02:14:52,064 INFO L112 eAbstractionObserver]: Analyzing ICFG email_spec1_product33.cil.c [2022-11-03 02:14:52,089 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-03 02:14:52,090 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-03 02:14:52,176 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-03 02:14:52,196 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;@26e0d4ff, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-03 02:14:52,197 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-03 02:14:52,203 INFO L276 IsEmpty]: Start isEmpty. Operand has 212 states, 123 states have (on average 1.3089430894308942) internal successors, (161), 127 states have internal predecessors, (161), 63 states have call successors, (63), 24 states have call predecessors, (63), 24 states have return successors, (63), 63 states have call predecessors, (63), 63 states have call successors, (63) [2022-11-03 02:14:52,221 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2022-11-03 02:14:52,221 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:14:52,222 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:14:52,223 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:14:52,231 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:14:52,233 INFO L85 PathProgramCache]: Analyzing trace with hash -336845607, now seen corresponding path program 1 times [2022-11-03 02:14:52,244 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:14:52,245 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [881101228] [2022-11-03 02:14:52,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:14:52,246 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:14:52,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:14:52,746 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-11-03 02:14:52,747 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:14:52,747 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [881101228] [2022-11-03 02:14:52,748 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [881101228] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:14:52,748 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:14:52,749 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-03 02:14:52,754 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [74532605] [2022-11-03 02:14:52,755 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:14:52,761 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-03 02:14:52,762 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:14:52,798 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-03 02:14:52,800 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-03 02:14:52,803 INFO L87 Difference]: Start difference. First operand has 212 states, 123 states have (on average 1.3089430894308942) internal successors, (161), 127 states have internal predecessors, (161), 63 states have call successors, (63), 24 states have call predecessors, (63), 24 states have return successors, (63), 63 states have call predecessors, (63), 63 states have call successors, (63) 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) [2022-11-03 02:14:53,017 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:14:53,018 INFO L93 Difference]: Finished difference Result 341 states and 452 transitions. [2022-11-03 02:14:53,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-03 02:14:53,020 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 64 [2022-11-03 02:14:53,021 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:14:53,032 INFO L225 Difference]: With dead ends: 341 [2022-11-03 02:14:53,033 INFO L226 Difference]: Without dead ends: 209 [2022-11-03 02:14:53,038 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 [2022-11-03 02:14:53,041 INFO L413 NwaCegarLoop]: 244 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, 244 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 [2022-11-03 02:14:53,042 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 244 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 02:14:53,063 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 209 states. [2022-11-03 02:14:53,127 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 209 to 209. [2022-11-03 02:14:53,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 209 states, 121 states have (on average 1.28099173553719) internal successors, (155), 124 states have internal predecessors, (155), 63 states have call successors, (63), 24 states have call predecessors, (63), 24 states have return successors, (62), 62 states have call predecessors, (62), 62 states have call successors, (62) [2022-11-03 02:14:53,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 209 states to 209 states and 280 transitions. [2022-11-03 02:14:53,141 INFO L78 Accepts]: Start accepts. Automaton has 209 states and 280 transitions. Word has length 64 [2022-11-03 02:14:53,143 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:14:53,143 INFO L495 AbstractCegarLoop]: Abstraction has 209 states and 280 transitions. [2022-11-03 02:14:53,144 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) [2022-11-03 02:14:53,150 INFO L276 IsEmpty]: Start isEmpty. Operand 209 states and 280 transitions. [2022-11-03 02:14:53,160 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-11-03 02:14:53,160 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:14:53,160 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:14:53,161 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-03 02:14:53,161 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:14:53,162 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:14:53,162 INFO L85 PathProgramCache]: Analyzing trace with hash -525117704, now seen corresponding path program 1 times [2022-11-03 02:14:53,162 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:14:53,162 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [754871709] [2022-11-03 02:14:53,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:14:53,163 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:14:53,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:14:53,413 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-11-03 02:14:53,413 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:14:53,414 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [754871709] [2022-11-03 02:14:53,414 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [754871709] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:14:53,414 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:14:53,415 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 02:14:53,415 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1307467446] [2022-11-03 02:14:53,415 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:14:53,418 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:14:53,418 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:14:53,419 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:14:53,419 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:14:53,420 INFO L87 Difference]: Start difference. First operand 209 states and 280 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) [2022-11-03 02:14:53,578 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:14:53,579 INFO L93 Difference]: Finished difference Result 337 states and 440 transitions. [2022-11-03 02:14:53,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:14:53,579 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 65 [2022-11-03 02:14:53,580 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:14:53,582 INFO L225 Difference]: With dead ends: 337 [2022-11-03 02:14:53,582 INFO L226 Difference]: Without dead ends: 211 [2022-11-03 02:14:53,583 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 [2022-11-03 02:14:53,585 INFO L413 NwaCegarLoop]: 241 mSDtfsCounter, 0 mSDsluCounter, 277 mSDsCounter, 0 mSdLazyCounter, 78 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 481 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 [2022-11-03 02:14:53,585 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 481 Invalid, 78 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 78 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 02:14:53,586 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 211 states. [2022-11-03 02:14:53,599 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 211 to 211. [2022-11-03 02:14:53,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 211 states, 123 states have (on average 1.2764227642276422) internal successors, (157), 126 states have internal predecessors, (157), 63 states have call successors, (63), 24 states have call predecessors, (63), 24 states have return successors, (62), 62 states have call predecessors, (62), 62 states have call successors, (62) [2022-11-03 02:14:53,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 211 states to 211 states and 282 transitions. [2022-11-03 02:14:53,602 INFO L78 Accepts]: Start accepts. Automaton has 211 states and 282 transitions. Word has length 65 [2022-11-03 02:14:53,603 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:14:53,603 INFO L495 AbstractCegarLoop]: Abstraction has 211 states and 282 transitions. [2022-11-03 02:14:53,603 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) [2022-11-03 02:14:53,603 INFO L276 IsEmpty]: Start isEmpty. Operand 211 states and 282 transitions. [2022-11-03 02:14:53,605 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-11-03 02:14:53,605 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:14:53,605 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:14:53,606 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-03 02:14:53,606 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:14:53,606 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:14:53,606 INFO L85 PathProgramCache]: Analyzing trace with hash 1878360945, now seen corresponding path program 1 times [2022-11-03 02:14:53,607 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:14:53,607 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1723556480] [2022-11-03 02:14:53,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:14:53,607 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:14:53,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:14:53,730 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-11-03 02:14:53,731 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:14:53,731 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1723556480] [2022-11-03 02:14:53,731 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1723556480] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:14:53,731 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:14:53,732 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 02:14:53,732 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1456470769] [2022-11-03 02:14:53,732 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:14:53,732 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:14:53,733 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:14:53,733 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:14:53,733 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:14:53,734 INFO L87 Difference]: Start difference. First operand 211 states and 282 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) [2022-11-03 02:14:53,891 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:14:53,891 INFO L93 Difference]: Finished difference Result 452 states and 623 transitions. [2022-11-03 02:14:53,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:14:53,893 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 70 [2022-11-03 02:14:53,893 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:14:53,897 INFO L225 Difference]: With dead ends: 452 [2022-11-03 02:14:53,898 INFO L226 Difference]: Without dead ends: 259 [2022-11-03 02:14:53,900 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 [2022-11-03 02:14:53,906 INFO L413 NwaCegarLoop]: 265 mSDtfsCounter, 57 mSDsluCounter, 274 mSDsCounter, 0 mSdLazyCounter, 79 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 502 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 [2022-11-03 02:14:53,908 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [72 Valid, 502 Invalid, 80 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 79 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 02:14:53,911 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 259 states. [2022-11-03 02:14:53,938 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 259 to 254. [2022-11-03 02:14:53,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 254 states, 155 states have (on average 1.3548387096774193) internal successors, (210), 158 states have internal predecessors, (210), 74 states have call successors, (74), 24 states have call predecessors, (74), 24 states have return successors, (73), 73 states have call predecessors, (73), 73 states have call successors, (73) [2022-11-03 02:14:53,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 254 states to 254 states and 357 transitions. [2022-11-03 02:14:53,942 INFO L78 Accepts]: Start accepts. Automaton has 254 states and 357 transitions. Word has length 70 [2022-11-03 02:14:53,942 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:14:53,942 INFO L495 AbstractCegarLoop]: Abstraction has 254 states and 357 transitions. [2022-11-03 02:14:53,943 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) [2022-11-03 02:14:53,943 INFO L276 IsEmpty]: Start isEmpty. Operand 254 states and 357 transitions. [2022-11-03 02:14:53,944 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2022-11-03 02:14:53,945 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:14:53,945 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:14:53,945 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-03 02:14:53,946 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:14:53,946 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:14:53,946 INFO L85 PathProgramCache]: Analyzing trace with hash 320965469, now seen corresponding path program 1 times [2022-11-03 02:14:53,946 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:14:53,947 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [426020045] [2022-11-03 02:14:53,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:14:53,947 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:14:53,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:14:54,141 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-11-03 02:14:54,141 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:14:54,141 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [426020045] [2022-11-03 02:14:54,142 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [426020045] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 02:14:54,142 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [279210904] [2022-11-03 02:14:54,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:14:54,142 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:14:54,143 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ad2af8c-b2a8-4a17-a879-bfee31dfe368/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:14:54,145 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ad2af8c-b2a8-4a17-a879-bfee31dfe368/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 02:14:54,154 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ad2af8c-b2a8-4a17-a879-bfee31dfe368/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-03 02:14:54,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:14:54,490 INFO L263 TraceCheckSpWp]: Trace formula consists of 1016 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-03 02:14:54,499 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:14:54,586 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-11-03 02:14:54,588 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 02:14:54,684 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-11-03 02:14:54,685 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [279210904] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 02:14:54,685 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1774760429] [2022-11-03 02:14:54,714 INFO L159 IcfgInterpreter]: Started Sifa with 60 locations of interest [2022-11-03 02:14:54,714 INFO L166 IcfgInterpreter]: Building call graph [2022-11-03 02:14:54,724 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-03 02:14:54,730 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-03 02:14:54,730 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-03 02:15:27,310 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 443 for LOIs [2022-11-03 02:15:27,664 INFO L197 IcfgInterpreter]: Interpreting procedure setClientPrivateKey with input of size 445 for LOIs [2022-11-03 02:15:27,972 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-03 02:16:07,576 WARN L234 SmtUtils]: Spent 7.14s on a formula simplification. DAG size of input: 490 DAG size of output: 361 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:16:31,106 WARN L234 SmtUtils]: Spent 11.08s on a formula simplification. DAG size of input: 592 DAG size of output: 349 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:16:55,352 WARN L234 SmtUtils]: Spent 22.73s on a formula simplification. DAG size of input: 594 DAG size of output: 467 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:17:19,679 WARN L234 SmtUtils]: Spent 22.74s on a formula simplification. DAG size of input: 593 DAG size of output: 468 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:17:44,014 WARN L234 SmtUtils]: Spent 22.63s on a formula simplification. DAG size of input: 591 DAG size of output: 466 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:17:49,315 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [1774760429] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:17:49,315 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-11-03 02:17:49,315 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [4, 4, 4] total 26 [2022-11-03 02:17:49,316 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [796402413] [2022-11-03 02:17:49,316 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:17:49,316 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-11-03 02:17:49,317 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:17:49,317 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-11-03 02:17:49,318 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=571, Unknown=0, NotChecked=0, Total=650 [2022-11-03 02:17:49,318 INFO L87 Difference]: Start difference. First operand 254 states and 357 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) [2022-11-03 02:18:02,218 WARN L234 SmtUtils]: Spent 9.01s on a formula simplification. DAG size of input: 575 DAG size of output: 341 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:18:13,221 WARN L234 SmtUtils]: Spent 9.55s on a formula simplification. DAG size of input: 582 DAG size of output: 411 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:18:22,529 WARN L234 SmtUtils]: Spent 9.05s on a formula simplification. DAG size of input: 573 DAG size of output: 407 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:18:32,745 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:18:32,745 INFO L93 Difference]: Finished difference Result 591 states and 882 transitions. [2022-11-03 02:18:32,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2022-11-03 02:18:32,746 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 71 [2022-11-03 02:18:32,747 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:18:32,749 INFO L225 Difference]: With dead ends: 591 [2022-11-03 02:18:32,749 INFO L226 Difference]: Without dead ends: 355 [2022-11-03 02:18:32,750 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 219 GetRequests, 191 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 162 ImplicationChecksByTransitivity, 173.1s TimeCoverageRelationStatistics Valid=118, Invalid=752, Unknown=0, NotChecked=0, Total=870 [2022-11-03 02:18:32,751 INFO L413 NwaCegarLoop]: 261 mSDtfsCounter, 279 mSDsluCounter, 3206 mSDsCounter, 0 mSdLazyCounter, 1835 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 279 SdHoareTripleChecker+Valid, 3362 SdHoareTripleChecker+Invalid, 1860 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 1835 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.2s IncrementalHoareTripleChecker+Time [2022-11-03 02:18:32,752 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [279 Valid, 3362 Invalid, 1860 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [25 Valid, 1835 Invalid, 0 Unknown, 0 Unchecked, 11.2s Time] [2022-11-03 02:18:32,753 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 355 states. [2022-11-03 02:18:32,904 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 355 to 282. [2022-11-03 02:18:32,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 282 states, 182 states have (on average 1.3681318681318682) internal successors, (249), 185 states have internal predecessors, (249), 74 states have call successors, (74), 25 states have call predecessors, (74), 25 states have return successors, (73), 73 states have call predecessors, (73), 73 states have call successors, (73) [2022-11-03 02:18:32,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 282 states to 282 states and 396 transitions. [2022-11-03 02:18:32,908 INFO L78 Accepts]: Start accepts. Automaton has 282 states and 396 transitions. Word has length 71 [2022-11-03 02:18:32,908 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:18:32,908 INFO L495 AbstractCegarLoop]: Abstraction has 282 states and 396 transitions. [2022-11-03 02:18:32,909 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) [2022-11-03 02:18:32,909 INFO L276 IsEmpty]: Start isEmpty. Operand 282 states and 396 transitions. [2022-11-03 02:18:32,910 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-11-03 02:18:32,910 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:18:32,911 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:18:32,947 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ad2af8c-b2a8-4a17-a879-bfee31dfe368/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-03 02:18:33,130 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ad2af8c-b2a8-4a17-a879-bfee31dfe368/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:18:33,130 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:18:33,131 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:18:33,131 INFO L85 PathProgramCache]: Analyzing trace with hash -1742945564, now seen corresponding path program 1 times [2022-11-03 02:18:33,131 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:18:33,131 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [700863579] [2022-11-03 02:18:33,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:18:33,131 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:18:33,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:18:33,339 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-11-03 02:18:33,339 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:18:33,341 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [700863579] [2022-11-03 02:18:33,342 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [700863579] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 02:18:33,342 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1603637359] [2022-11-03 02:18:33,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:18:33,342 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:18:33,343 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ad2af8c-b2a8-4a17-a879-bfee31dfe368/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:18:33,346 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ad2af8c-b2a8-4a17-a879-bfee31dfe368/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 02:18:33,366 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ad2af8c-b2a8-4a17-a879-bfee31dfe368/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-03 02:18:33,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:18:33,635 INFO L263 TraceCheckSpWp]: Trace formula consists of 1037 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-03 02:18:33,639 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:18:33,672 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-11-03 02:18:33,673 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 02:18:33,737 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-11-03 02:18:33,737 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1603637359] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 02:18:33,738 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [373048825] [2022-11-03 02:18:33,741 INFO L159 IcfgInterpreter]: Started Sifa with 64 locations of interest [2022-11-03 02:18:33,741 INFO L166 IcfgInterpreter]: Building call graph [2022-11-03 02:18:33,742 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-03 02:18:33,742 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-03 02:18:33,742 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-03 02:19:16,849 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 443 for LOIs [2022-11-03 02:19:17,185 INFO L197 IcfgInterpreter]: Interpreting procedure setClientPrivateKey with input of size 446 for LOIs [2022-11-03 02:19:17,465 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-03 02:19:57,502 WARN L234 SmtUtils]: Spent 7.22s on a formula simplification. DAG size of input: 490 DAG size of output: 361 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:20:23,819 WARN L234 SmtUtils]: Spent 14.54s on a formula simplification. DAG size of input: 583 DAG size of output: 363 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:20:43,809 WARN L234 SmtUtils]: Spent 19.62s on a formula simplification. DAG size of input: 583 DAG size of output: 448 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:20:53,198 WARN L234 SmtUtils]: Spent 6.17s on a formula simplification. DAG size of input: 572 DAG size of output: 346 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:20:59,807 WARN L234 SmtUtils]: Spent 6.17s on a formula simplification. DAG size of input: 568 DAG size of output: 342 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:21:05,572 WARN L234 SmtUtils]: Spent 5.29s on a formula simplification. DAG size of input: 572 DAG size of output: 329 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:21:11,349 WARN L234 SmtUtils]: Spent 5.29s on a formula simplification. DAG size of input: 574 DAG size of output: 331 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:21:19,584 WARN L234 SmtUtils]: Spent 7.35s on a formula simplification. DAG size of input: 584 DAG size of output: 343 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:21:19,591 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [373048825] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:21:19,591 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-11-03 02:21:19,591 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [24] imperfect sequences [4, 4, 4] total 30 [2022-11-03 02:21:19,592 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [62681462] [2022-11-03 02:21:19,592 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:21:19,592 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-11-03 02:21:19,592 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:21:19,593 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-11-03 02:21:19,593 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=769, Unknown=0, NotChecked=0, Total=870 [2022-11-03 02:21:19,593 INFO L87 Difference]: Start difference. First operand 282 states and 396 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) [2022-11-03 02:21:27,831 WARN L234 SmtUtils]: Spent 6.71s on a formula simplification. DAG size of input: 396 DAG size of output: 366 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:21:46,593 WARN L234 SmtUtils]: Spent 18.51s on a formula simplification. DAG size of input: 547 DAG size of output: 412 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:22:20,195 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:22:20,195 INFO L93 Difference]: Finished difference Result 646 states and 961 transitions. [2022-11-03 02:22:20,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2022-11-03 02:22:20,196 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 77 [2022-11-03 02:22:20,196 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:22:20,199 INFO L225 Difference]: With dead ends: 646 [2022-11-03 02:22:20,200 INFO L226 Difference]: Without dead ends: 410 [2022-11-03 02:22:20,201 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 243 GetRequests, 205 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 290 ImplicationChecksByTransitivity, 171.0s TimeCoverageRelationStatistics Valid=183, Invalid=1377, Unknown=0, NotChecked=0, Total=1560 [2022-11-03 02:22:20,202 INFO L413 NwaCegarLoop]: 265 mSDtfsCounter, 188 mSDsluCounter, 3879 mSDsCounter, 0 mSdLazyCounter, 2456 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 193 SdHoareTripleChecker+Valid, 4016 SdHoareTripleChecker+Invalid, 2486 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 2456 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.1s IncrementalHoareTripleChecker+Time [2022-11-03 02:22:20,203 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [193 Valid, 4016 Invalid, 2486 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [30 Valid, 2456 Invalid, 0 Unknown, 0 Unchecked, 11.1s Time] [2022-11-03 02:22:20,204 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 410 states. [2022-11-03 02:22:20,418 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 410 to 326. [2022-11-03 02:22:20,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 326 states, 223 states have (on average 1.4215246636771302) internal successors, (317), 227 states have internal predecessors, (317), 76 states have call successors, (76), 26 states have call predecessors, (76), 26 states have return successors, (75), 74 states have call predecessors, (75), 75 states have call successors, (75) [2022-11-03 02:22:20,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 326 states to 326 states and 468 transitions. [2022-11-03 02:22:20,422 INFO L78 Accepts]: Start accepts. Automaton has 326 states and 468 transitions. Word has length 77 [2022-11-03 02:22:20,422 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:22:20,422 INFO L495 AbstractCegarLoop]: Abstraction has 326 states and 468 transitions. [2022-11-03 02:22:20,423 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) [2022-11-03 02:22:20,423 INFO L276 IsEmpty]: Start isEmpty. Operand 326 states and 468 transitions. [2022-11-03 02:22:20,424 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2022-11-03 02:22:20,424 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:22:20,425 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:22:20,450 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ad2af8c-b2a8-4a17-a879-bfee31dfe368/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-03 02:22:20,634 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ad2af8c-b2a8-4a17-a879-bfee31dfe368/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:22:20,634 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:22:20,635 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:22:20,635 INFO L85 PathProgramCache]: Analyzing trace with hash -524455089, now seen corresponding path program 1 times [2022-11-03 02:22:20,635 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:22:20,635 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1878868207] [2022-11-03 02:22:20,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:22:20,635 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:22:20,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:22:20,823 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-11-03 02:22:20,824 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:22:20,824 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1878868207] [2022-11-03 02:22:20,824 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1878868207] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 02:22:20,824 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1869899962] [2022-11-03 02:22:20,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:22:20,825 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:22:20,825 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ad2af8c-b2a8-4a17-a879-bfee31dfe368/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:22:20,826 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ad2af8c-b2a8-4a17-a879-bfee31dfe368/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 02:22:20,850 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ad2af8c-b2a8-4a17-a879-bfee31dfe368/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-03 02:22:21,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:22:21,184 INFO L263 TraceCheckSpWp]: Trace formula consists of 1143 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-03 02:22:21,189 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:22:21,229 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-11-03 02:22:21,229 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 02:22:21,323 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-11-03 02:22:21,323 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1869899962] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 02:22:21,324 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1057395132] [2022-11-03 02:22:21,329 INFO L159 IcfgInterpreter]: Started Sifa with 69 locations of interest [2022-11-03 02:22:21,330 INFO L166 IcfgInterpreter]: Building call graph [2022-11-03 02:22:21,330 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-03 02:22:21,331 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-03 02:22:21,331 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-03 02:23:07,868 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 447 for LOIs [2022-11-03 02:23:08,177 INFO L197 IcfgInterpreter]: Interpreting procedure setClientKeyringPublicKey with input of size 238 for LOIs [2022-11-03 02:23:08,245 INFO L197 IcfgInterpreter]: Interpreting procedure setClientKeyringUser with input of size 247 for LOIs [2022-11-03 02:23:08,312 INFO L197 IcfgInterpreter]: Interpreting procedure createClientKeyringEntry with input of size 237 for LOIs [2022-11-03 02:23:08,382 INFO L197 IcfgInterpreter]: Interpreting procedure setClientPrivateKey with input of size 445 for LOIs [2022-11-03 02:23:08,707 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-03 02:23:51,630 WARN L234 SmtUtils]: Spent 7.68s on a formula simplification. DAG size of input: 490 DAG size of output: 361 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:23:57,165 WARN L234 SmtUtils]: Spent 5.20s on a formula simplification. DAG size of input: 502 DAG size of output: 312 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:24:03,704 WARN L234 SmtUtils]: Spent 5.06s on a formula simplification. DAG size of input: 512 DAG size of output: 289 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:24:29,176 WARN L234 SmtUtils]: Spent 23.95s on a formula simplification. DAG size of input: 636 DAG size of output: 514 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:24:49,342 WARN L234 SmtUtils]: Spent 19.70s on a formula simplification. DAG size of input: 623 DAG size of output: 494 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:25:10,489 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [1057395132] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:25:10,489 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-11-03 02:25:10,490 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [29] imperfect sequences [4, 4, 4] total 35 [2022-11-03 02:25:10,490 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1285561744] [2022-11-03 02:25:10,490 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:25:10,491 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2022-11-03 02:25:10,491 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:25:10,492 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2022-11-03 02:25:10,492 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=110, Invalid=1080, Unknown=0, NotChecked=0, Total=1190 [2022-11-03 02:25:10,493 INFO L87 Difference]: Start difference. First operand 326 states and 468 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) [2022-11-03 02:25:20,973 WARN L234 SmtUtils]: Spent 8.45s on a formula simplification. DAG size of input: 622 DAG size of output: 363 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:25:28,513 WARN L234 SmtUtils]: Spent 7.19s on a formula simplification. DAG size of input: 585 DAG size of output: 385 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:25:46,159 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:25:46,160 INFO L93 Difference]: Finished difference Result 675 states and 1008 transitions. [2022-11-03 02:25:46,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-11-03 02:25:46,160 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 80 [2022-11-03 02:25:46,161 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:25:46,163 INFO L225 Difference]: With dead ends: 675 [2022-11-03 02:25:46,164 INFO L226 Difference]: Without dead ends: 439 [2022-11-03 02:25:46,165 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 244 GetRequests, 209 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 276 ImplicationChecksByTransitivity, 137.9s TimeCoverageRelationStatistics Valid=128, Invalid=1204, Unknown=0, NotChecked=0, Total=1332 [2022-11-03 02:25:46,174 INFO L413 NwaCegarLoop]: 258 mSDtfsCounter, 200 mSDsluCounter, 4304 mSDsCounter, 0 mSdLazyCounter, 3792 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 17.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 200 SdHoareTripleChecker+Valid, 4430 SdHoareTripleChecker+Invalid, 3809 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 3792 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 18.8s IncrementalHoareTripleChecker+Time [2022-11-03 02:25:46,174 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [200 Valid, 4430 Invalid, 3809 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [17 Valid, 3792 Invalid, 0 Unknown, 0 Unchecked, 18.8s Time] [2022-11-03 02:25:46,177 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 439 states. [2022-11-03 02:25:46,570 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 439 to 393. [2022-11-03 02:25:46,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 393 states, 283 states have (on average 1.452296819787986) internal successors, (411), 288 states have internal predecessors, (411), 80 states have call successors, (80), 29 states have call predecessors, (80), 29 states have return successors, (79), 77 states have call predecessors, (79), 79 states have call successors, (79) [2022-11-03 02:25:46,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 393 states to 393 states and 570 transitions. [2022-11-03 02:25:46,575 INFO L78 Accepts]: Start accepts. Automaton has 393 states and 570 transitions. Word has length 80 [2022-11-03 02:25:46,576 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:25:46,576 INFO L495 AbstractCegarLoop]: Abstraction has 393 states and 570 transitions. [2022-11-03 02:25:46,576 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) [2022-11-03 02:25:46,576 INFO L276 IsEmpty]: Start isEmpty. Operand 393 states and 570 transitions. [2022-11-03 02:25:46,578 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-11-03 02:25:46,578 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:25:46,578 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:25:46,611 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ad2af8c-b2a8-4a17-a879-bfee31dfe368/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-03 02:25:46,794 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ad2af8c-b2a8-4a17-a879-bfee31dfe368/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2022-11-03 02:25:46,794 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:25:46,795 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:25:46,795 INFO L85 PathProgramCache]: Analyzing trace with hash -1962387665, now seen corresponding path program 1 times [2022-11-03 02:25:46,795 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:25:46,795 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [518510117] [2022-11-03 02:25:46,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:25:46,795 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:25:46,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:25:46,922 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-11-03 02:25:46,922 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:25:46,922 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [518510117] [2022-11-03 02:25:46,923 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [518510117] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 02:25:46,923 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [27596280] [2022-11-03 02:25:46,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:25:46,923 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:25:46,923 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ad2af8c-b2a8-4a17-a879-bfee31dfe368/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:25:46,924 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ad2af8c-b2a8-4a17-a879-bfee31dfe368/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 02:25:46,950 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ad2af8c-b2a8-4a17-a879-bfee31dfe368/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-03 02:25:47,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:25:47,241 INFO L263 TraceCheckSpWp]: Trace formula consists of 1048 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-03 02:25:47,246 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:25:47,287 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-11-03 02:25:47,287 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 02:25:47,373 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-11-03 02:25:47,374 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [27596280] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 02:25:47,374 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [774889520] [2022-11-03 02:25:47,382 INFO L159 IcfgInterpreter]: Started Sifa with 68 locations of interest [2022-11-03 02:25:47,382 INFO L166 IcfgInterpreter]: Building call graph [2022-11-03 02:25:47,383 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-03 02:25:47,383 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-03 02:25:47,384 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-03 02:26:26,979 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 443 for LOIs [2022-11-03 02:26:27,262 INFO L197 IcfgInterpreter]: Interpreting procedure setClientPrivateKey with input of size 445 for LOIs [2022-11-03 02:26:27,536 INFO L197 IcfgInterpreter]: Interpreting procedure sendEmail with input of size 273 for LOIs [2022-11-03 02:26:29,354 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailTo with input of size 241 for LOIs [2022-11-03 02:26:29,395 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing with input of size 275 for LOIs [2022-11-03 02:26:47,410 INFO L197 IcfgInterpreter]: Interpreting procedure getClientPrivateKey with input of size 233 for LOIs [2022-11-03 02:26:47,449 INFO L197 IcfgInterpreter]: Interpreting procedure findPublicKey with input of size 253 for LOIs [2022-11-03 02:26:47,519 INFO L197 IcfgInterpreter]: Interpreting procedure getEmailTo with input of size 258 for LOIs [2022-11-03 02:26:47,562 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailFrom with input of size 477 for LOIs [2022-11-03 02:26:50,743 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-03 02:27:30,434 WARN L234 SmtUtils]: Spent 7.22s on a formula simplification. DAG size of input: 490 DAG size of output: 361 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate)