./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/email_spec4_product17.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5e519f3a Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae1de84f-a35d-49a7-bd06-6308b5e25911/bin/utaipan-7li7fVZpFI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae1de84f-a35d-49a7-bd06-6308b5e25911/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_ae1de84f-a35d-49a7-bd06-6308b5e25911/bin/utaipan-7li7fVZpFI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae1de84f-a35d-49a7-bd06-6308b5e25911/bin/utaipan-7li7fVZpFI/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/email_spec4_product17.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae1de84f-a35d-49a7-bd06-6308b5e25911/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_ae1de84f-a35d-49a7-bd06-6308b5e25911/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 922981a69371fe79bea26dd37077d7dd588a5af1cfad53b27080b4988960097d --- 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 02:04:43,998 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-03 02:04:44,001 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-03 02:04:44,053 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-03 02:04:44,054 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-03 02:04:44,058 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-03 02:04:44,061 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-03 02:04:44,065 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-03 02:04:44,068 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-03 02:04:44,073 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-03 02:04:44,075 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-03 02:04:44,077 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-03 02:04:44,078 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-03 02:04:44,080 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-03 02:04:44,082 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-03 02:04:44,084 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-03 02:04:44,086 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-03 02:04:44,087 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-03 02:04:44,089 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-03 02:04:44,099 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-03 02:04:44,100 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-03 02:04:44,102 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-03 02:04:44,105 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-03 02:04:44,107 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-03 02:04:44,116 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-03 02:04:44,116 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-03 02:04:44,116 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-03 02:04:44,118 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-03 02:04:44,119 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-03 02:04:44,121 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-03 02:04:44,121 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-03 02:04:44,122 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-03 02:04:44,125 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-03 02:04:44,126 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-03 02:04:44,127 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-03 02:04:44,128 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-03 02:04:44,128 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-03 02:04:44,129 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-03 02:04:44,129 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-03 02:04:44,130 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-03 02:04:44,131 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-03 02:04:44,132 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae1de84f-a35d-49a7-bd06-6308b5e25911/bin/utaipan-7li7fVZpFI/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-11-03 02:04:44,177 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-03 02:04:44,177 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-03 02:04:44,178 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-03 02:04:44,178 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-03 02:04:44,179 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-03 02:04:44,180 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-03 02:04:44,180 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-03 02:04:44,180 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-03 02:04:44,180 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-03 02:04:44,181 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-03 02:04:44,182 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-03 02:04:44,182 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-03 02:04:44,182 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-03 02:04:44,183 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-03 02:04:44,183 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-03 02:04:44,183 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-03 02:04:44,184 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-03 02:04:44,184 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-03 02:04:44,185 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-03 02:04:44,185 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-03 02:04:44,185 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-03 02:04:44,185 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-03 02:04:44,186 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-03 02:04:44,186 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-03 02:04:44,186 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-03 02:04:44,186 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-03 02:04:44,187 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-03 02:04:44,187 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-03 02:04:44,187 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-03 02:04:44,187 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-03 02:04:44,188 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-03 02:04:44,188 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-03 02:04:44,189 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 02:04:44,189 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-03 02:04:44,189 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-03 02:04:44,189 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-03 02:04:44,190 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-03 02:04:44,190 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-03 02:04:44,190 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-03 02:04:44,190 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-03 02:04:44,191 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-03 02:04:44,191 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_ae1de84f-a35d-49a7-bd06-6308b5e25911/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae1de84f-a35d-49a7-bd06-6308b5e25911/bin/utaipan-7li7fVZpFI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 922981a69371fe79bea26dd37077d7dd588a5af1cfad53b27080b4988960097d [2022-11-03 02:04:44,515 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-03 02:04:44,536 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-03 02:04:44,538 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-03 02:04:44,539 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-03 02:04:44,540 INFO L275 PluginConnector]: CDTParser initialized [2022-11-03 02:04:44,541 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae1de84f-a35d-49a7-bd06-6308b5e25911/bin/utaipan-7li7fVZpFI/../../sv-benchmarks/c/product-lines/email_spec4_product17.cil.c [2022-11-03 02:04:44,606 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae1de84f-a35d-49a7-bd06-6308b5e25911/bin/utaipan-7li7fVZpFI/data/e5adb2d46/b4dd19b798e64a97ad1ad6f8c0cbbe8a/FLAGe80211fe3 [2022-11-03 02:04:45,276 INFO L306 CDTParser]: Found 1 translation units. [2022-11-03 02:04:45,281 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae1de84f-a35d-49a7-bd06-6308b5e25911/sv-benchmarks/c/product-lines/email_spec4_product17.cil.c [2022-11-03 02:04:45,305 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae1de84f-a35d-49a7-bd06-6308b5e25911/bin/utaipan-7li7fVZpFI/data/e5adb2d46/b4dd19b798e64a97ad1ad6f8c0cbbe8a/FLAGe80211fe3 [2022-11-03 02:04:45,520 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae1de84f-a35d-49a7-bd06-6308b5e25911/bin/utaipan-7li7fVZpFI/data/e5adb2d46/b4dd19b798e64a97ad1ad6f8c0cbbe8a [2022-11-03 02:04:45,524 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-03 02:04:45,526 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-03 02:04:45,530 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-03 02:04:45,531 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-03 02:04:45,535 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-03 02:04:45,536 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 02:04:45" (1/1) ... [2022-11-03 02:04:45,538 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2a7116db and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:04:45, skipping insertion in model container [2022-11-03 02:04:45,538 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 02:04:45" (1/1) ... [2022-11-03 02:04:45,548 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-03 02:04:45,645 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-03 02:04:46,281 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_ae1de84f-a35d-49a7-bd06-6308b5e25911/sv-benchmarks/c/product-lines/email_spec4_product17.cil.c[45969,45982] [2022-11-03 02:04:46,336 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 02:04:46,352 INFO L203 MainTranslator]: Completed pre-run [2022-11-03 02:04:46,492 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_ae1de84f-a35d-49a7-bd06-6308b5e25911/sv-benchmarks/c/product-lines/email_spec4_product17.cil.c[45969,45982] [2022-11-03 02:04:46,540 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 02:04:46,573 INFO L208 MainTranslator]: Completed translation [2022-11-03 02:04:46,573 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:04:46 WrapperNode [2022-11-03 02:04:46,574 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-03 02:04:46,575 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-03 02:04:46,575 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-03 02:04:46,575 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-03 02:04:46,584 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:04:46" (1/1) ... [2022-11-03 02:04:46,636 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:04:46" (1/1) ... [2022-11-03 02:04:46,705 INFO L138 Inliner]: procedures = 127, calls = 208, calls flagged for inlining = 53, calls inlined = 46, statements flattened = 906 [2022-11-03 02:04:46,706 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-03 02:04:46,707 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-03 02:04:46,707 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-03 02:04:46,707 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-03 02:04:46,718 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:04:46" (1/1) ... [2022-11-03 02:04:46,718 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:04:46" (1/1) ... [2022-11-03 02:04:46,724 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:04:46" (1/1) ... [2022-11-03 02:04:46,725 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:04:46" (1/1) ... [2022-11-03 02:04:46,743 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:04:46" (1/1) ... [2022-11-03 02:04:46,753 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:04:46" (1/1) ... [2022-11-03 02:04:46,759 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:04:46" (1/1) ... [2022-11-03 02:04:46,763 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:04:46" (1/1) ... [2022-11-03 02:04:46,770 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-03 02:04:46,771 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-03 02:04:46,771 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-03 02:04:46,771 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-03 02:04:46,772 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:04:46" (1/1) ... [2022-11-03 02:04:46,793 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 02:04:46,806 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae1de84f-a35d-49a7-bd06-6308b5e25911/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:04:46,833 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae1de84f-a35d-49a7-bd06-6308b5e25911/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-03 02:04:46,859 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae1de84f-a35d-49a7-bd06-6308b5e25911/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-03 02:04:46,879 INFO L130 BoogieDeclarations]: Found specification of procedure getClientPrivateKey [2022-11-03 02:04:46,880 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientPrivateKey [2022-11-03 02:04:46,880 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookSize [2022-11-03 02:04:46,880 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookSize [2022-11-03 02:04:46,880 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookAddress [2022-11-03 02:04:46,881 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookAddress [2022-11-03 02:04:46,881 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing__wrappee__Keys [2022-11-03 02:04:46,881 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing__wrappee__Keys [2022-11-03 02:04:46,881 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2022-11-03 02:04:46,881 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2022-11-03 02:04:46,881 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2022-11-03 02:04:46,882 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2022-11-03 02:04:46,882 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable [2022-11-03 02:04:46,882 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable [2022-11-03 02:04:46,882 INFO L130 BoogieDeclarations]: Found specification of procedure createClientKeyringEntry [2022-11-03 02:04:46,882 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientKeyringEntry [2022-11-03 02:04:46,883 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSignKey [2022-11-03 02:04:46,883 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSignKey [2022-11-03 02:04:46,883 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAdd [2022-11-03 02:04:46,883 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAdd [2022-11-03 02:04:46,883 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2022-11-03 02:04:46,883 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailFrom [2022-11-03 02:04:46,884 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailFrom [2022-11-03 02:04:46,884 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2022-11-03 02:04:46,884 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2022-11-03 02:04:46,884 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-03 02:04:46,884 INFO L130 BoogieDeclarations]: Found specification of procedure isSigned [2022-11-03 02:04:46,885 INFO L138 BoogieDeclarations]: Found implementation of procedure isSigned [2022-11-03 02:04:46,885 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookSize [2022-11-03 02:04:46,885 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookSize [2022-11-03 02:04:46,885 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringUser [2022-11-03 02:04:46,885 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringUser [2022-11-03 02:04:46,885 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringPublicKey [2022-11-03 02:04:46,886 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringPublicKey [2022-11-03 02:04:46,886 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2022-11-03 02:04:46,886 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2022-11-03 02:04:46,886 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2022-11-03 02:04:46,886 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2022-11-03 02:04:46,886 INFO L130 BoogieDeclarations]: Found specification of procedure setClientPrivateKey [2022-11-03 02:04:46,887 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientPrivateKey [2022-11-03 02:04:46,887 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailTo [2022-11-03 02:04:46,887 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailTo [2022-11-03 02:04:46,887 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-03 02:04:46,887 INFO L130 BoogieDeclarations]: Found specification of procedure generateKeyPair [2022-11-03 02:04:46,888 INFO L138 BoogieDeclarations]: Found implementation of procedure generateKeyPair [2022-11-03 02:04:46,888 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookAddress [2022-11-03 02:04:46,888 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookAddress [2022-11-03 02:04:46,888 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-03 02:04:46,888 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-03 02:04:47,116 INFO L235 CfgBuilder]: Building ICFG [2022-11-03 02:04:47,119 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-03 02:04:48,287 INFO L276 CfgBuilder]: Performing block encoding [2022-11-03 02:04:48,971 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-03 02:04:48,971 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-03 02:04:48,975 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 02:04:48 BoogieIcfgContainer [2022-11-03 02:04:48,975 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-03 02:04:48,979 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-03 02:04:48,979 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-03 02:04:48,983 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-03 02:04:48,983 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 02:04:45" (1/3) ... [2022-11-03 02:04:48,984 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2011801 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 02:04:48, skipping insertion in model container [2022-11-03 02:04:48,984 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:04:46" (2/3) ... [2022-11-03 02:04:48,985 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2011801 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 02:04:48, skipping insertion in model container [2022-11-03 02:04:48,985 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 02:04:48" (3/3) ... [2022-11-03 02:04:48,986 INFO L112 eAbstractionObserver]: Analyzing ICFG email_spec4_product17.cil.c [2022-11-03 02:04:49,007 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-03 02:04:49,008 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-03 02:04:49,087 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-03 02:04:49,113 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;@31e02d25, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-03 02:04:49,113 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-03 02:04:49,120 INFO L276 IsEmpty]: Start isEmpty. Operand has 173 states, 99 states have (on average 1.3333333333333333) internal successors, (132), 102 states have internal predecessors, (132), 50 states have call successors, (50), 22 states have call predecessors, (50), 22 states have return successors, (50), 49 states have call predecessors, (50), 50 states have call successors, (50) [2022-11-03 02:04:49,137 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-11-03 02:04:49,138 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:04:49,139 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] [2022-11-03 02:04:49,140 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting outgoing__wrappee__KeysErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__KeysErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:04:49,147 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:04:49,148 INFO L85 PathProgramCache]: Analyzing trace with hash 808653316, now seen corresponding path program 1 times [2022-11-03 02:04:49,158 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:04:49,160 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [50477371] [2022-11-03 02:04:49,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:04:49,161 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:04:49,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:04:49,560 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-03 02:04:49,561 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:04:49,561 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [50477371] [2022-11-03 02:04:49,562 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [50477371] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:04:49,563 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:04:49,564 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-03 02:04:49,566 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1792502756] [2022-11-03 02:04:49,567 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:04:49,574 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-03 02:04:49,576 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:04:49,616 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-03 02:04:49,618 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-03 02:04:49,623 INFO L87 Difference]: Start difference. First operand has 173 states, 99 states have (on average 1.3333333333333333) internal successors, (132), 102 states have internal predecessors, (132), 50 states have call successors, (50), 22 states have call predecessors, (50), 22 states have return successors, (50), 49 states have call predecessors, (50), 50 states have call successors, (50) Second operand has 2 states, 2 states have (on average 15.0) internal successors, (30), 2 states have internal predecessors, (30), 2 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-11-03 02:04:49,825 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:04:49,825 INFO L93 Difference]: Finished difference Result 254 states and 335 transitions. [2022-11-03 02:04:49,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-03 02:04:49,828 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 15.0) internal successors, (30), 2 states have internal predecessors, (30), 2 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 65 [2022-11-03 02:04:49,829 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:04:49,841 INFO L225 Difference]: With dead ends: 254 [2022-11-03 02:04:49,842 INFO L226 Difference]: Without dead ends: 170 [2022-11-03 02:04:49,848 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 02:04:49,853 INFO L413 NwaCegarLoop]: 196 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 196 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 02:04:49,854 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 196 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 02:04:49,877 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170 states. [2022-11-03 02:04:49,918 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170 to 170. [2022-11-03 02:04:49,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 170 states, 97 states have (on average 1.2989690721649485) internal successors, (126), 99 states have internal predecessors, (126), 50 states have call successors, (50), 22 states have call predecessors, (50), 22 states have return successors, (49), 48 states have call predecessors, (49), 49 states have call successors, (49) [2022-11-03 02:04:49,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 170 states to 170 states and 225 transitions. [2022-11-03 02:04:49,925 INFO L78 Accepts]: Start accepts. Automaton has 170 states and 225 transitions. Word has length 65 [2022-11-03 02:04:49,927 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:04:49,927 INFO L495 AbstractCegarLoop]: Abstraction has 170 states and 225 transitions. [2022-11-03 02:04:49,928 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 15.0) internal successors, (30), 2 states have internal predecessors, (30), 2 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-11-03 02:04:49,928 INFO L276 IsEmpty]: Start isEmpty. Operand 170 states and 225 transitions. [2022-11-03 02:04:49,931 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-11-03 02:04:49,931 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:04:49,932 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] [2022-11-03 02:04:49,932 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-03 02:04:49,933 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting outgoing__wrappee__KeysErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__KeysErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:04:49,933 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:04:49,933 INFO L85 PathProgramCache]: Analyzing trace with hash 762560103, now seen corresponding path program 1 times [2022-11-03 02:04:49,934 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:04:49,934 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1783080562] [2022-11-03 02:04:49,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:04:49,935 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:04:50,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:04:50,207 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-03 02:04:50,208 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:04:50,208 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1783080562] [2022-11-03 02:04:50,208 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1783080562] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:04:50,209 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:04:50,209 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 02:04:50,209 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1005607636] [2022-11-03 02:04:50,209 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:04:50,211 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:04:50,211 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:04:50,212 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:04:50,212 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:04:50,213 INFO L87 Difference]: Start difference. First operand 170 states and 225 transitions. Second operand has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 2 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-11-03 02:04:50,378 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:04:50,378 INFO L93 Difference]: Finished difference Result 250 states and 320 transitions. [2022-11-03 02:04:50,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:04:50,379 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 2 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 66 [2022-11-03 02:04:50,379 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:04:50,381 INFO L225 Difference]: With dead ends: 250 [2022-11-03 02:04:50,382 INFO L226 Difference]: Without dead ends: 172 [2022-11-03 02:04:50,383 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 02:04:50,385 INFO L413 NwaCegarLoop]: 193 mSDtfsCounter, 0 mSDsluCounter, 222 mSDsCounter, 0 mSdLazyCounter, 64 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 385 SdHoareTripleChecker+Invalid, 64 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 64 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 02:04:50,385 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 385 Invalid, 64 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 64 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 02:04:50,387 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 172 states. [2022-11-03 02:04:50,402 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 172 to 172. [2022-11-03 02:04:50,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 172 states, 99 states have (on average 1.292929292929293) internal successors, (128), 101 states have internal predecessors, (128), 50 states have call successors, (50), 22 states have call predecessors, (50), 22 states have return successors, (49), 48 states have call predecessors, (49), 49 states have call successors, (49) [2022-11-03 02:04:50,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 172 states to 172 states and 227 transitions. [2022-11-03 02:04:50,405 INFO L78 Accepts]: Start accepts. Automaton has 172 states and 227 transitions. Word has length 66 [2022-11-03 02:04:50,406 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:04:50,406 INFO L495 AbstractCegarLoop]: Abstraction has 172 states and 227 transitions. [2022-11-03 02:04:50,406 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 2 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-11-03 02:04:50,407 INFO L276 IsEmpty]: Start isEmpty. Operand 172 states and 227 transitions. [2022-11-03 02:04:50,409 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2022-11-03 02:04:50,409 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:04:50,409 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:04:50,410 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-03 02:04:50,410 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting outgoing__wrappee__KeysErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__KeysErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:04:50,411 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:04:50,411 INFO L85 PathProgramCache]: Analyzing trace with hash -1674334353, now seen corresponding path program 1 times [2022-11-03 02:04:50,411 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:04:50,411 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [883343259] [2022-11-03 02:04:50,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:04:50,412 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:04:50,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:04:50,562 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-03 02:04:50,562 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:04:50,562 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [883343259] [2022-11-03 02:04:50,562 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [883343259] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:04:50,563 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:04:50,563 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 02:04:50,563 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [3805679] [2022-11-03 02:04:50,563 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:04:50,564 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:04:50,564 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:04:50,564 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:04:50,565 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:04:50,565 INFO L87 Difference]: Start difference. First operand 172 states and 227 transitions. Second operand has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 2 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-11-03 02:04:50,745 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:04:50,746 INFO L93 Difference]: Finished difference Result 379 states and 521 transitions. [2022-11-03 02:04:50,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:04:50,747 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 2 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 71 [2022-11-03 02:04:50,747 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:04:50,755 INFO L225 Difference]: With dead ends: 379 [2022-11-03 02:04:50,755 INFO L226 Difference]: Without dead ends: 225 [2022-11-03 02:04:50,759 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 02:04:50,760 INFO L413 NwaCegarLoop]: 212 mSDtfsCounter, 59 mSDsluCounter, 216 mSDsCounter, 0 mSdLazyCounter, 65 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 77 SdHoareTripleChecker+Valid, 398 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 65 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 02:04:50,763 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [77 Valid, 398 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 65 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 02:04:50,765 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 225 states. [2022-11-03 02:04:50,796 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 225 to 220. [2022-11-03 02:04:50,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 220 states, 133 states have (on average 1.3759398496240602) internal successors, (183), 135 states have internal predecessors, (183), 64 states have call successors, (64), 22 states have call predecessors, (64), 22 states have return successors, (63), 62 states have call predecessors, (63), 63 states have call successors, (63) [2022-11-03 02:04:50,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 220 states to 220 states and 310 transitions. [2022-11-03 02:04:50,799 INFO L78 Accepts]: Start accepts. Automaton has 220 states and 310 transitions. Word has length 71 [2022-11-03 02:04:50,799 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:04:50,799 INFO L495 AbstractCegarLoop]: Abstraction has 220 states and 310 transitions. [2022-11-03 02:04:50,800 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 2 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-11-03 02:04:50,800 INFO L276 IsEmpty]: Start isEmpty. Operand 220 states and 310 transitions. [2022-11-03 02:04:50,808 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-11-03 02:04:50,808 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:04:50,808 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:04:50,808 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-03 02:04:50,809 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting outgoing__wrappee__KeysErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__KeysErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:04:50,809 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:04:50,809 INFO L85 PathProgramCache]: Analyzing trace with hash 97879651, now seen corresponding path program 1 times [2022-11-03 02:04:50,809 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:04:50,810 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1875050378] [2022-11-03 02:04:50,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:04:50,810 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:04:50,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:04:51,121 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-03 02:04:51,122 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:04:51,122 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1875050378] [2022-11-03 02:04:51,122 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1875050378] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 02:04:51,122 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [672188647] [2022-11-03 02:04:51,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:04:51,123 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:04:51,123 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae1de84f-a35d-49a7-bd06-6308b5e25911/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:04:51,131 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae1de84f-a35d-49a7-bd06-6308b5e25911/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 02:04:51,153 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae1de84f-a35d-49a7-bd06-6308b5e25911/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-03 02:04:51,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:04:51,484 INFO L263 TraceCheckSpWp]: Trace formula consists of 944 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-03 02:04:51,495 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:04:51,567 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-03 02:04:51,567 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 02:04:51,653 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-03 02:04:51,653 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [672188647] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 02:04:51,653 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1311241190] [2022-11-03 02:04:51,677 INFO L159 IcfgInterpreter]: Started Sifa with 59 locations of interest [2022-11-03 02:04:51,677 INFO L166 IcfgInterpreter]: Building call graph [2022-11-03 02:04:51,681 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-03 02:04:51,688 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-03 02:04:51,688 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-03 02:05:27,896 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 444 for LOIs [2022-11-03 02:05:28,196 INFO L197 IcfgInterpreter]: Interpreting procedure setClientPrivateKey with input of size 441 for LOIs [2022-11-03 02:05:28,501 INFO L197 IcfgInterpreter]: Interpreting procedure sendEmail with input of size 466 for LOIs [2022-11-03 02:05:57,661 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailTo with input of size 450 for LOIs [2022-11-03 02:05:57,942 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing with input of size 464 for LOIs [2022-11-03 02:06:04,031 INFO L197 IcfgInterpreter]: Interpreting procedure getClientAddressBookSize with input of size 244 for LOIs [2022-11-03 02:06:04,097 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing__wrappee__Keys with input of size 248 for LOIs [2022-11-03 02:06:08,323 INFO L197 IcfgInterpreter]: Interpreting procedure getClientPrivateKey with input of size 439 for LOIs [2022-11-03 02:06:08,584 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailFrom with input of size 452 for LOIs [2022-11-03 02:06:09,289 INFO L197 IcfgInterpreter]: Interpreting procedure isSigned with input of size 241 for LOIs [2022-11-03 02:06:09,325 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-03 02:06:15,536 WARN L234 SmtUtils]: Spent 6.13s on a formula simplification. DAG size of input: 513 DAG size of output: 363 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:06:28,637 WARN L234 SmtUtils]: Spent 5.71s on a formula simplification. DAG size of input: 444 DAG size of output: 244 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:06:34,797 WARN L234 SmtUtils]: Spent 5.97s on a formula simplification. DAG size of input: 467 DAG size of output: 264 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:06:49,331 WARN L234 SmtUtils]: Spent 6.22s on a formula simplification. DAG size of input: 464 DAG size of output: 333 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:06:59,714 WARN L234 SmtUtils]: Spent 5.47s on a formula simplification. DAG size of input: 486 DAG size of output: 307 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:07:05,268 WARN L234 SmtUtils]: Spent 5.21s on a formula simplification. DAG size of input: 498 DAG size of output: 319 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:07:20,902 WARN L234 SmtUtils]: Spent 9.22s on a formula simplification. DAG size of input: 560 DAG size of output: 428 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:07:30,430 WARN L234 SmtUtils]: Spent 9.12s on a formula simplification. DAG size of input: 559 DAG size of output: 427 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:07:36,207 WARN L234 SmtUtils]: Spent 5.42s on a formula simplification. DAG size of input: 563 DAG size of output: 333 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:07:41,894 WARN L234 SmtUtils]: Spent 5.32s on a formula simplification. DAG size of input: 559 DAG size of output: 329 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:07:47,644 WARN L234 SmtUtils]: Spent 5.36s on a formula simplification. DAG size of input: 565 DAG size of output: 335 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:07:57,185 WARN L234 SmtUtils]: Spent 9.10s on a formula simplification. DAG size of input: 561 DAG size of output: 429 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:09:22,233 WARN L234 SmtUtils]: Spent 6.18s on a formula simplification. DAG size of input: 506 DAG size of output: 370 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:09:33,744 WARN L234 SmtUtils]: Spent 7.31s on a formula simplification. DAG size of input: 513 DAG size of output: 362 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:09:39,315 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '2984#(and (<= 1 |outgoing__wrappee__Keys_~client#1|) (<= |outgoing__wrappee__Keys_mail_~msg#1| 1) (= |outgoing__wrappee__Keys___utac_acc__SignForward_spec__1_~tmp~0#1| ~__ste_client_privateKey0~0) (= ~__SELECTED_FEATURE_Sign~0 0) (= ~__ste_client_outbuffer3~0 0) (= ~__ste_Client_counter~0 0) (<= 1 |outgoing__wrappee__Keys_mail_~__utac__ad__arg1~0#1|) (<= |outgoing__wrappee__Keys_mail_~__utac__ad__arg2~0#1| 1) (= |outgoing__wrappee__Keys___utac_acc__SignForward_spec__1_~tmp~0#1| 0) (<= ~__ste_email_isSignatureVerified1~0 0) (= ~__ste_client_autoResponse1~0 0) (<= |outgoing__wrappee__Keys_mail_#in~msg#1| 1) (= ~__ste_Client_AddressBook2_Alias0~0 0) (= 0 ~__ste_email_subject0~0.base) (= ~__ste_Client_Keyring2_PublicKey2~0 0) (<= 1 |outgoing__wrappee__Keys_~msg#1|) (<= ~__ste_client_idCounter2~0 3) (<= |old(~__ste_email_from0~0)| 0) (<= ~__ste_email_isSignatureVerified0~0 0) (<= 0 (+ |outgoing__wrappee__Keys_~tmp~7#1| 2147483648)) (= ~__SELECTED_FEATURE_Encrypt~0 0) (<= |outgoing__wrappee__Keys_getClientId_~retValue_acc~16#1| 2147483647) (= ~__ste_Client_AddressBook1_Address2~0 0) (<= ~__ste_email_from0~0 2147483647) (= ~__ste_ClientAddressBook_size1~0 0) (<= 0 ~__SELECTED_FEATURE_AutoResponder~0) (= ~__ste_email_body0~0.offset 0) (<= ~__SELECTED_FEATURE_Keys~0 0) (<= 0 ~__ste_email_isSigned1~0) (<= ~__SELECTED_FEATURE_Decrypt~0 0) (<= 0 (+ ~__ste_email_from0~0 2147483648)) (= ~__ste_Client_Keyring0_User2~0 0) (= ~__ste_ClientAddressBook_size0~0 0) (<= ~__ste_Client_Keyring1_PublicKey0~0 0) (= ~__ste_Client_Keyring0_User1~0 0) (= ~__ste_Client_AddressBook1_Alias1~0 0) (= ~__ste_client_name1~0.offset 0) (<= ~__GUIDSL_NON_TERMINAL_main~0 0) (<= |outgoing__wrappee__Keys_mail_~client#1| 1) (<= ~__ste_Client_AddressBook2_Address0~0 0) (<= ~__SELECTED_FEATURE_AutoResponder~0 0) (<= ~__ste_email_id0~0 0) (<= 0 ~__ste_client_name2~0.offset) (= ~head~0.offset 0) (<= ~__GUIDSL_ROOT_PRODUCTION~0 0) (<= ~__ste_Client_AddressBook2_Alias1~0 0) (<= |outgoing__wrappee__Keys_getClientId_#res#1| 2147483647) (<= 0 ~__GUIDSL_ROOT_PRODUCTION~0) (= ~__ste_Client_Keyring0_PublicKey2~0 0) (<= |outgoing__wrappee__Keys___utac_acc__SignForward_spec__1_~client#1| 1) (<= ~__ste_Email_counter~0 0) (<= ~__ste_Client_Keyring2_User2~0 0) (<= ~__ste_email_body1~0.offset 0) (<= ~__ste_client_privateKey2~0 789) (<= 0 ~__SELECTED_FEATURE_Decrypt~0) (<= ~queue_empty~0 1) (<= 0 ~__ste_Client_AddressBook2_Alias1~0) (<= 0 ~__ste_Client_Keyring2_User2~0) (<= 0 ~__ste_Client_Keyring1_User2~0) (<= 0 (+ ~__ste_email_signKey0~0 2147483648)) (<= 0 ~__ste_email_isEncrypted1~0) (<= ~__ste_email_signKey0~0 2147483647) (<= 0 |old(~__ste_email_from0~0)|) (<= |#NULL.offset| 0) (<= 0 ~__ste_Client_Keyring1_User0~0) (<= 0 ~__SELECTED_FEATURE_AddressBook~0) (= ~__ste_Client_Keyring0_PublicKey1~0 0) (= ~__SELECTED_FEATURE_Forward~0 0) (<= 0 ~__ste_email_isEncrypted0~0) (= ~__ste_Client_Keyring0_User0~0 0) (<= |outgoing__wrappee__Keys_mail_~__utac__ad__arg1~0#1| 1) (<= ~__ste_client_idCounter0~0 2147483647) (= ~__ste_Client_Keyring2_PublicKey1~0 0) (<= 0 ~__ste_email_id1~0) (<= ~__ste_Client_AddressBook0_Address1~0 0) (= ~__ste_email_body0~0.base 0) (<= ~__ste_email_isSigned0~0 1) (<= ~__ste_email_isEncrypted0~0 0) (<= 1 |outgoing__wrappee__Keys_mail_~msg#1|) (= ~__ste_Client_AddressBook0_Alias0~0 0) (<= 0 ~__ste_Client_AddressBook2_Address1~0) (<= |outgoing__wrappee__Keys___utac_acc__SignForward_spec__1_~tmp___0~0#1| 1) (<= 0 ~__ste_client_name0~0.offset) (<= ~__ste_Client_Keyring0_PublicKey0~0 0) (<= ~__ste_client_name1~0.base 0) (<= ~__ste_client_autoResponse0~0 0) (<= 1 |outgoing__wrappee__Keys___utac_acc__SignForward_spec__1_#in~msg#1|) (<= ~__SELECTED_FEATURE_AddressBook~0 0) (<= ~__ste_Client_Keyring1_PublicKey2~0 0) (<= 0 ~__ste_Client_Keyring0_PublicKey0~0) (<= ~__ste_client_forwardReceiver3~0 0) (<= 3 ~__ste_client_idCounter2~0) (= ~__ste_Client_AddressBook2_Address2~0 0) (<= 0 ~__ste_Client_Keyring1_PublicKey2~0) (<= 1 |outgoing__wrappee__Keys_getClientId_#in~handle#1|) (<= ~__ste_Client_AddressBook0_Address0~0 0) (<= 1 |outgoing__wrappee__Keys___utac_acc__SignForward_spec__1_#in~client#1|) (= 3 ~chuck~0) (<= 0 ~__ste_email_signKey1~0) (<= 0 ~__ste_email_body1~0.offset) (<= 1 ~queue_empty~0) (<= 0 (+ |outgoing__wrappee__Keys_getClientId_#res#1| 2147483648)) (<= ~__ste_email_signKey1~0 0) (<= 0 ~__ste_client_forwardReceiver3~0) (<= ~__ste_client_name2~0.offset 0) (<= ~__ste_email_isSigned1~0 0) (<= 0 ~__ste_Email_counter~0) (<= ~__ste_email_subject0~0.offset 0) (<= 1 |outgoing__wrappee__Keys___utac_acc__SignForward_spec__1_~client#1|) (<= 0 ~__ste_client_autoResponse0~0) (<= 0 ~__ste_Client_AddressBook0_Alias2~0) (<= 0 |old(~__ste_email_isSignatureVerified0~0)|) (<= 0 ~__ste_email_isSignatureVerified1~0) (= ~__ste_client_outbuffer0~0 0) (<= 789 ~__ste_client_privateKey2~0) (<= ~__SELECTED_FEATURE_Verify~0 0) (<= ~__ste_ClientKeyring_size1~0 0) (<= |outgoing__wrappee__Keys_getClientId_#in~handle#1| 1) (<= ~__ste_Client_Keyring1_User2~0 0) (<= 0 ~head~0.base) (<= |outgoing__wrappee__Keys_~msg#1| 1) (= ~__SELECTED_FEATURE_Base~0 0) (<= ~__ste_Client_AddressBook1_Alias2~0 0) (<= 1 |outgoing__wrappee__Keys_getClientId_~handle#1|) (<= 0 ~__ste_Client_AddressBook0_Address2~0) (= ~__ste_client_forwardReceiver0~0 0) (<= |outgoing__wrappee__Keys___utac_acc__SignForward_spec__1_#in~client#1| 1) (= ~__ste_Client_Keyring2_User0~0 0) (<= |outgoing__wrappee__Keys_~client#1| 1) (<= 0 ~__ste_email_subject0~0.offset) (= ~rjh~0 2) (<= 0 ~__ste_Client_AddressBook1_Alias0~0) (= ~__ste_Client_Keyring1_PublicKey1~0 0) (<= 0 ~queued_client~0) (<= 0 ~__SELECTED_FEATURE_Keys~0) (<= ~__ste_Client_AddressBook1_Alias0~0 0) (<= |outgoing__wrappee__Keys___utac_acc__SignForward_spec__1_~msg#1| 1) (<= 1 |outgoing__wrappee__Keys_mail_#in~client#1|) (<= 0 ~__ste_Client_Keyring1_PublicKey0~0) (= ~__ste_Client_Keyring2_PublicKey0~0 0) (<= 0 ~__ste_email_isSignatureVerified0~0) (= ~__ste_Client_AddressBook1_Address0~0 0) (<= 0 ~__ste_ClientKeyring_size1~0) (<= 0 ~__ste_client_forwardReceiver2~0) (= ~__ste_client_name2~0.base 0) (<= 0 ~__ste_Client_AddressBook0_Address1~0) (<= ~__ste_email_encryptionKey0~0 0) (<= 1 |outgoing__wrappee__Keys___utac_acc__SignForward_spec__1_~msg#1|) (= ~__ste_email_subject1~0.base 0) (<= ~__ste_ClientKeyring_size0~0 0) (<= ~__ste_email_id1~0 0) (<= 0 ~__ste_Client_AddressBook0_Address0~0) (<= ~__ste_Client_Keyring1_User0~0 0) (<= |outgoing__wrappee__Keys_#in~client#1| 1) (<= ~__ste_Client_AddressBook0_Alias2~0 0) (not (= |outgoing__wrappee__Keys___utac_acc__SignForward_spec__1_~tmp___0~0#1| 0)) (<= ~__ste_Client_AddressBook0_Address2~0 0) (<= 1 |outgoing__wrappee__Keys_mail_~__utac__ad__arg2~0#1|) (<= ~head~0.base 0) (<= ~__ste_client_forwardReceiver1~0 0) (= ~__ste_Client_Keyring1_User1~0 0) (= ~__ste_Client_AddressBook2_Alias2~0 0) (<= ~__ste_Client_Keyring2_User1~0 0) (<= 0 ~__ste_email_isSigned0~0) (<= 0 ~__SELECTED_FEATURE_Verify~0) (<= |outgoing__wrappee__Keys_~tmp~7#1| 2147483647) (<= 0 ~__ste_Client_AddressBook1_Alias2~0) (<= 0 ~__ste_client_autoResponse2~0) (= ~__ste_email_subject1~0.offset 0) (<= 1 |outgoing__wrappee__Keys_#in~msg#1|) (<= 0 ~__ste_Client_AddressBook2_Address0~0) (<= 0 ~__ste_Client_Keyring2_User1~0) (= ~queued_message~0 0) (= ~__ste_Client_AddressBook1_Address1~0 0) (<= |outgoing__wrappee__Keys_mail_#in~client#1| 1) (<= 1 |outgoing__wrappee__Keys_mail_~client#1|) (<= ~__ste_client_name0~0.offset 0) (= ~__ste_client_outbuffer1~0 0) (<= |outgoing__wrappee__Keys_#in~msg#1| 1) (= ~__ste_Client_AddressBook0_Alias1~0 0) (<= 0 ~__ste_ClientKeyring_size0~0) (<= ~__ste_email_isEncrypted1~0 0) (<= |old(~__ste_email_isSignatureVerified0~0)| 0) (<= 0 |#NULL.offset|) (<= |old(~__ste_email_isSignatureVerified1~0)| 0) (<= |outgoing__wrappee__Keys___utac_acc__SignForward_spec__1_#in~msg#1| 1) (<= 0 ~__ste_client_forwardReceiver1~0) (<= 1 |outgoing__wrappee__Keys_mail_#in~msg#1|) (= ~__ste_client_name0~0.base 0) (<= 0 (+ |outgoing__wrappee__Keys_getClientId_~retValue_acc~16#1| 2147483648)) (<= 0 |old(~__ste_email_isSignatureVerified1~0)|) (<= ~__ste_Client_AddressBook2_Address1~0 0) (= ~__ste_client_outbuffer2~0 0) (<= ~bob~0 1) (<= 0 ~__GUIDSL_NON_TERMINAL_main~0) (<= 0 (+ ~__ste_client_idCounter0~0 2147483648)) (<= ~__ste_client_forwardReceiver2~0 0) (<= 2 ~__ste_email_to0~0) (<= 0 |#StackHeapBarrier|) (<= ~__ste_email_to0~0 2) (= ~__ste_ClientAddressBook_size2~0 0) (<= ~__ste_client_autoResponse2~0 0) (= ~__ste_email_encryptionKey1~0 0) (= ~__ste_email_body1~0.base 0) (<= 1 ~bob~0) (= ~__ste_ClientKeyring_size2~0 0) (<= 0 |outgoing__wrappee__Keys___utac_acc__SignForward_spec__1_~tmp___0~0#1|) (<= 0 ~__ste_client_name1~0.base) (<= 1 |outgoing__wrappee__Keys_#in~client#1|) (<= |outgoing__wrappee__Keys_getClientId_~handle#1| 1) (<= 0 ~__ste_email_id0~0) (<= 0 ~__ste_email_encryptionKey0~0) (= |#NULL.base| 0) (<= ~queued_client~0 0))' at error location [2022-11-03 02:09:39,315 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-03 02:09:39,315 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-03 02:09:39,316 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2022-11-03 02:09:39,316 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [436867761] [2022-11-03 02:09:39,316 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-03 02:09:39,317 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-03 02:09:39,318 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:09:39,318 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-03 02:09:39,319 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=171, Invalid=3135, Unknown=0, NotChecked=0, Total=3306 [2022-11-03 02:09:39,320 INFO L87 Difference]: Start difference. First operand 220 states and 310 transitions. Second operand has 7 states, 7 states have (on average 7.714285714285714) internal successors, (54), 7 states have internal predecessors, (54), 2 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2022-11-03 02:09:39,645 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:09:39,647 INFO L93 Difference]: Finished difference Result 573 states and 870 transitions. [2022-11-03 02:09:39,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-03 02:09:39,648 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.714285714285714) internal successors, (54), 7 states have internal predecessors, (54), 2 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) Word has length 72 [2022-11-03 02:09:39,648 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:09:39,653 INFO L225 Difference]: With dead ends: 573 [2022-11-03 02:09:39,653 INFO L226 Difference]: Without dead ends: 495 [2022-11-03 02:09:39,655 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 218 GetRequests, 161 SyntacticMatches, 1 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 771 ImplicationChecksByTransitivity, 209.9s TimeCoverageRelationStatistics Valid=171, Invalid=3135, Unknown=0, NotChecked=0, Total=3306 [2022-11-03 02:09:39,661 INFO L413 NwaCegarLoop]: 265 mSDtfsCounter, 175 mSDsluCounter, 763 mSDsCounter, 0 mSdLazyCounter, 213 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 229 SdHoareTripleChecker+Valid, 928 SdHoareTripleChecker+Invalid, 216 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 213 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-03 02:09:39,664 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [229 Valid, 928 Invalid, 216 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 213 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-03 02:09:39,666 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 495 states. [2022-11-03 02:09:39,717 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 495 to 480. [2022-11-03 02:09:39,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 480 states, 314 states have (on average 1.4936305732484076) internal successors, (469), 316 states have internal predecessors, (469), 143 states have call successors, (143), 22 states have call predecessors, (143), 22 states have return successors, (142), 141 states have call predecessors, (142), 142 states have call successors, (142) [2022-11-03 02:09:39,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 480 states to 480 states and 754 transitions. [2022-11-03 02:09:39,723 INFO L78 Accepts]: Start accepts. Automaton has 480 states and 754 transitions. Word has length 72 [2022-11-03 02:09:39,725 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:09:39,726 INFO L495 AbstractCegarLoop]: Abstraction has 480 states and 754 transitions. [2022-11-03 02:09:39,726 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.714285714285714) internal successors, (54), 7 states have internal predecessors, (54), 2 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2022-11-03 02:09:39,726 INFO L276 IsEmpty]: Start isEmpty. Operand 480 states and 754 transitions. [2022-11-03 02:09:39,733 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-11-03 02:09:39,733 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:09:39,734 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:09:39,779 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae1de84f-a35d-49a7-bd06-6308b5e25911/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-03 02:09:39,959 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae1de84f-a35d-49a7-bd06-6308b5e25911/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:09:39,960 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting outgoing__wrappee__KeysErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__KeysErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:09:39,960 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:09:39,960 INFO L85 PathProgramCache]: Analyzing trace with hash 1311000710, now seen corresponding path program 1 times [2022-11-03 02:09:39,960 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:09:39,960 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1128977718] [2022-11-03 02:09:39,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:09:39,961 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:09:39,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:09:40,064 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-03 02:09:40,065 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:09:40,065 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1128977718] [2022-11-03 02:09:40,065 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1128977718] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:09:40,065 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:09:40,065 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 02:09:40,065 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1186144044] [2022-11-03 02:09:40,066 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:09:40,066 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:09:40,066 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:09:40,067 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:09:40,067 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:09:40,067 INFO L87 Difference]: Start difference. First operand 480 states and 754 transitions. Second operand has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 2 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-11-03 02:09:40,202 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:09:40,202 INFO L93 Difference]: Finished difference Result 1190 states and 1906 transitions. [2022-11-03 02:09:40,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:09:40,203 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 2 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 78 [2022-11-03 02:09:40,204 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:09:40,208 INFO L225 Difference]: With dead ends: 1190 [2022-11-03 02:09:40,208 INFO L226 Difference]: Without dead ends: 742 [2022-11-03 02:09:40,210 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 02:09:40,211 INFO L413 NwaCegarLoop]: 218 mSDtfsCounter, 57 mSDsluCounter, 223 mSDsCounter, 0 mSdLazyCounter, 68 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 75 SdHoareTripleChecker+Valid, 410 SdHoareTripleChecker+Invalid, 69 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 68 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 02:09:40,211 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [75 Valid, 410 Invalid, 69 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 68 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 02:09:40,212 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 742 states. [2022-11-03 02:09:40,256 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 742 to 737. [2022-11-03 02:09:40,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 737 states, 492 states have (on average 1.508130081300813) internal successors, (742), 494 states have internal predecessors, (742), 222 states have call successors, (222), 22 states have call predecessors, (222), 22 states have return successors, (221), 220 states have call predecessors, (221), 221 states have call successors, (221) [2022-11-03 02:09:40,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 737 states to 737 states and 1185 transitions. [2022-11-03 02:09:40,265 INFO L78 Accepts]: Start accepts. Automaton has 737 states and 1185 transitions. Word has length 78 [2022-11-03 02:09:40,266 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:09:40,266 INFO L495 AbstractCegarLoop]: Abstraction has 737 states and 1185 transitions. [2022-11-03 02:09:40,266 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 2 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-11-03 02:09:40,266 INFO L276 IsEmpty]: Start isEmpty. Operand 737 states and 1185 transitions. [2022-11-03 02:09:40,271 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-11-03 02:09:40,271 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:09:40,271 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 02:09:40,272 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-03 02:09:40,272 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting outgoing__wrappee__KeysErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__KeysErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:09:40,273 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:09:40,274 INFO L85 PathProgramCache]: Analyzing trace with hash 1881375407, now seen corresponding path program 1 times [2022-11-03 02:09:40,274 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:09:40,274 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1257604683] [2022-11-03 02:09:40,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:09:40,274 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:09:40,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:09:40,361 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-03 02:09:40,361 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:09:40,362 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1257604683] [2022-11-03 02:09:40,362 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1257604683] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:09:40,362 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:09:40,362 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 02:09:40,362 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [760788671] [2022-11-03 02:09:40,363 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:09:40,364 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:09:40,364 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:09:40,365 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:09:40,365 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:09:40,365 INFO L87 Difference]: Start difference. First operand 737 states and 1185 transitions. Second operand has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 2 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-11-03 02:09:40,508 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:09:40,509 INFO L93 Difference]: Finished difference Result 1812 states and 2953 transitions. [2022-11-03 02:09:40,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:09:40,511 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 2 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 79 [2022-11-03 02:09:40,511 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:09:40,518 INFO L225 Difference]: With dead ends: 1812 [2022-11-03 02:09:40,518 INFO L226 Difference]: Without dead ends: 1137 [2022-11-03 02:09:40,520 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 02:09:40,521 INFO L413 NwaCegarLoop]: 209 mSDtfsCounter, 55 mSDsluCounter, 218 mSDsCounter, 0 mSdLazyCounter, 66 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 73 SdHoareTripleChecker+Valid, 396 SdHoareTripleChecker+Invalid, 67 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 66 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 02:09:40,521 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [73 Valid, 396 Invalid, 67 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 66 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 02:09:40,523 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1137 states. [2022-11-03 02:09:40,579 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1137 to 1132. [2022-11-03 02:09:40,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1132 states, 768 states have (on average 1.5130208333333333) internal successors, (1162), 770 states have internal predecessors, (1162), 341 states have call successors, (341), 22 states have call predecessors, (341), 22 states have return successors, (340), 339 states have call predecessors, (340), 340 states have call successors, (340) [2022-11-03 02:09:40,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1132 states to 1132 states and 1843 transitions. [2022-11-03 02:09:40,588 INFO L78 Accepts]: Start accepts. Automaton has 1132 states and 1843 transitions. Word has length 79 [2022-11-03 02:09:40,589 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:09:40,589 INFO L495 AbstractCegarLoop]: Abstraction has 1132 states and 1843 transitions. [2022-11-03 02:09:40,589 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 2 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-11-03 02:09:40,589 INFO L276 IsEmpty]: Start isEmpty. Operand 1132 states and 1843 transitions. [2022-11-03 02:09:40,595 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2022-11-03 02:09:40,595 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:09:40,595 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 02:09:40,596 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-03 02:09:40,596 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting outgoing__wrappee__KeysErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__KeysErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:09:40,596 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:09:40,596 INFO L85 PathProgramCache]: Analyzing trace with hash -1099671548, now seen corresponding path program 1 times [2022-11-03 02:09:40,596 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:09:40,597 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1285253590] [2022-11-03 02:09:40,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:09:40,597 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:09:40,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:09:40,671 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-03 02:09:40,671 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:09:40,672 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1285253590] [2022-11-03 02:09:40,672 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1285253590] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:09:40,672 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:09:40,672 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 02:09:40,672 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2051119519] [2022-11-03 02:09:40,672 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:09:40,673 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:09:40,673 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:09:40,673 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:09:40,673 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:09:40,674 INFO L87 Difference]: Start difference. First operand 1132 states and 1843 transitions. Second operand has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 2 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-11-03 02:09:40,857 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:09:40,858 INFO L93 Difference]: Finished difference Result 2715 states and 4465 transitions. [2022-11-03 02:09:40,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:09:40,858 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 2 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 80 [2022-11-03 02:09:40,859 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:09:40,868 INFO L225 Difference]: With dead ends: 2715 [2022-11-03 02:09:40,869 INFO L226 Difference]: Without dead ends: 1725 [2022-11-03 02:09:40,872 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 02:09:40,873 INFO L413 NwaCegarLoop]: 207 mSDtfsCounter, 53 mSDsluCounter, 215 mSDsCounter, 0 mSdLazyCounter, 66 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 71 SdHoareTripleChecker+Valid, 391 SdHoareTripleChecker+Invalid, 67 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 66 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 02:09:40,873 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [71 Valid, 391 Invalid, 67 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 66 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 02:09:40,875 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1725 states. [2022-11-03 02:09:40,962 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1725 to 1720. [2022-11-03 02:09:40,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1720 states, 1194 states have (on average 1.5159128978224456) internal successors, (1810), 1196 states have internal predecessors, (1810), 503 states have call successors, (503), 22 states have call predecessors, (503), 22 states have return successors, (502), 501 states have call predecessors, (502), 502 states have call successors, (502) [2022-11-03 02:09:40,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1720 states to 1720 states and 2815 transitions. [2022-11-03 02:09:40,976 INFO L78 Accepts]: Start accepts. Automaton has 1720 states and 2815 transitions. Word has length 80 [2022-11-03 02:09:40,976 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:09:40,976 INFO L495 AbstractCegarLoop]: Abstraction has 1720 states and 2815 transitions. [2022-11-03 02:09:40,977 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 2 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-11-03 02:09:40,977 INFO L276 IsEmpty]: Start isEmpty. Operand 1720 states and 2815 transitions. [2022-11-03 02:09:40,985 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2022-11-03 02:09:40,985 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:09:40,985 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, 1] [2022-11-03 02:09:40,985 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-03 02:09:40,986 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting outgoing__wrappee__KeysErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__KeysErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:09:40,986 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:09:40,986 INFO L85 PathProgramCache]: Analyzing trace with hash -1075608370, now seen corresponding path program 1 times [2022-11-03 02:09:40,986 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:09:40,986 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1507099644] [2022-11-03 02:09:40,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:09:40,987 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:09:41,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:09:41,055 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-03 02:09:41,055 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:09:41,055 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1507099644] [2022-11-03 02:09:41,056 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1507099644] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:09:41,056 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:09:41,056 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 02:09:41,056 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1338048516] [2022-11-03 02:09:41,056 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:09:41,057 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:09:41,079 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:09:41,080 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:09:41,080 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:09:41,080 INFO L87 Difference]: Start difference. First operand 1720 states and 2815 transitions. Second operand has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 2 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-11-03 02:09:41,289 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:09:41,289 INFO L93 Difference]: Finished difference Result 4100 states and 6773 transitions. [2022-11-03 02:09:41,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:09:41,290 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 2 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 81 [2022-11-03 02:09:41,290 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:09:41,305 INFO L225 Difference]: With dead ends: 4100 [2022-11-03 02:09:41,305 INFO L226 Difference]: Without dead ends: 2659 [2022-11-03 02:09:41,310 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 02:09:41,311 INFO L413 NwaCegarLoop]: 207 mSDtfsCounter, 51 mSDsluCounter, 215 mSDsCounter, 0 mSdLazyCounter, 66 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 69 SdHoareTripleChecker+Valid, 391 SdHoareTripleChecker+Invalid, 67 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 66 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 02:09:41,312 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [69 Valid, 391 Invalid, 67 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 66 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 02:09:41,315 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2659 states. [2022-11-03 02:09:41,468 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2659 to 2654. [2022-11-03 02:09:41,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2654 states, 1883 states have (on average 1.516728624535316) internal successors, (2856), 1885 states have internal predecessors, (2856), 748 states have call successors, (748), 22 states have call predecessors, (748), 22 states have return successors, (747), 746 states have call predecessors, (747), 747 states have call successors, (747) [2022-11-03 02:09:41,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2654 states to 2654 states and 4351 transitions. [2022-11-03 02:09:41,489 INFO L78 Accepts]: Start accepts. Automaton has 2654 states and 4351 transitions. Word has length 81 [2022-11-03 02:09:41,489 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:09:41,489 INFO L495 AbstractCegarLoop]: Abstraction has 2654 states and 4351 transitions. [2022-11-03 02:09:41,490 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 2 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-11-03 02:09:41,490 INFO L276 IsEmpty]: Start isEmpty. Operand 2654 states and 4351 transitions. [2022-11-03 02:09:41,499 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2022-11-03 02:09:41,500 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:09:41,500 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, 1, 1] [2022-11-03 02:09:41,500 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-03 02:09:41,500 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting outgoing__wrappee__KeysErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__KeysErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:09:41,501 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:09:41,501 INFO L85 PathProgramCache]: Analyzing trace with hash -1687510872, now seen corresponding path program 1 times [2022-11-03 02:09:41,501 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:09:41,501 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1309374036] [2022-11-03 02:09:41,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:09:41,502 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:09:41,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:09:41,572 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-03 02:09:41,573 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:09:41,573 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1309374036] [2022-11-03 02:09:41,573 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1309374036] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:09:41,573 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:09:41,573 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 02:09:41,573 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1246431931] [2022-11-03 02:09:41,574 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:09:41,574 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:09:41,574 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:09:41,575 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:09:41,575 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:09:41,575 INFO L87 Difference]: Start difference. First operand 2654 states and 4351 transitions. Second operand has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 2 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-11-03 02:09:41,922 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:09:41,922 INFO L93 Difference]: Finished difference Result 6616 states and 10933 transitions. [2022-11-03 02:09:41,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:09:41,923 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 2 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 82 [2022-11-03 02:09:41,923 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:09:41,947 INFO L225 Difference]: With dead ends: 6616 [2022-11-03 02:09:41,947 INFO L226 Difference]: Without dead ends: 4384 [2022-11-03 02:09:41,954 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 02:09:41,956 INFO L413 NwaCegarLoop]: 220 mSDtfsCounter, 49 mSDsluCounter, 222 mSDsCounter, 0 mSdLazyCounter, 66 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 67 SdHoareTripleChecker+Valid, 411 SdHoareTripleChecker+Invalid, 67 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 66 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 02:09:41,957 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [67 Valid, 411 Invalid, 67 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 66 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 02:09:41,962 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4384 states. [2022-11-03 02:09:42,250 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4384 to 4379. [2022-11-03 02:09:42,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4379 states, 3115 states have (on average 1.5052969502407705) internal successors, (4689), 3117 states have internal predecessors, (4689), 1241 states have call successors, (1241), 22 states have call predecessors, (1241), 22 states have return successors, (1240), 1239 states have call predecessors, (1240), 1240 states have call successors, (1240) [2022-11-03 02:09:42,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4379 states to 4379 states and 7170 transitions. [2022-11-03 02:09:42,279 INFO L78 Accepts]: Start accepts. Automaton has 4379 states and 7170 transitions. Word has length 82 [2022-11-03 02:09:42,280 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:09:42,280 INFO L495 AbstractCegarLoop]: Abstraction has 4379 states and 7170 transitions. [2022-11-03 02:09:42,280 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 2 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-11-03 02:09:42,281 INFO L276 IsEmpty]: Start isEmpty. Operand 4379 states and 7170 transitions. [2022-11-03 02:09:42,293 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2022-11-03 02:09:42,293 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:09:42,295 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, 1, 1, 1] [2022-11-03 02:09:42,295 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-03 02:09:42,295 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting outgoing__wrappee__KeysErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__KeysErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:09:42,296 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:09:42,296 INFO L85 PathProgramCache]: Analyzing trace with hash 1190188074, now seen corresponding path program 1 times [2022-11-03 02:09:42,296 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:09:42,296 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [509673212] [2022-11-03 02:09:42,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:09:42,296 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:09:42,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:09:42,382 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-03 02:09:42,383 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:09:42,383 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [509673212] [2022-11-03 02:09:42,383 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [509673212] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:09:42,383 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:09:42,383 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 02:09:42,384 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [950762864] [2022-11-03 02:09:42,384 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:09:42,384 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:09:42,384 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:09:42,385 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:09:42,385 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:09:42,385 INFO L87 Difference]: Start difference. First operand 4379 states and 7170 transitions. Second operand has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 2 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-11-03 02:09:42,870 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:09:42,870 INFO L93 Difference]: Finished difference Result 11032 states and 18218 transitions. [2022-11-03 02:09:42,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:09:42,871 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 2 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 83 [2022-11-03 02:09:42,871 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:09:42,914 INFO L225 Difference]: With dead ends: 11032 [2022-11-03 02:09:42,914 INFO L226 Difference]: Without dead ends: 7341 [2022-11-03 02:09:42,927 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 02:09:42,928 INFO L413 NwaCegarLoop]: 209 mSDtfsCounter, 47 mSDsluCounter, 218 mSDsCounter, 0 mSdLazyCounter, 66 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 65 SdHoareTripleChecker+Valid, 396 SdHoareTripleChecker+Invalid, 67 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 66 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 02:09:42,929 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [65 Valid, 396 Invalid, 67 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 66 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 02:09:42,938 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7341 states. [2022-11-03 02:09:43,485 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7341 to 7336. [2022-11-03 02:09:43,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7336 states, 5250 states have (on average 1.4998095238095237) internal successors, (7874), 5252 states have internal predecessors, (7874), 2063 states have call successors, (2063), 22 states have call predecessors, (2063), 22 states have return successors, (2062), 2061 states have call predecessors, (2062), 2062 states have call successors, (2062) [2022-11-03 02:09:43,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7336 states to 7336 states and 11999 transitions. [2022-11-03 02:09:43,554 INFO L78 Accepts]: Start accepts. Automaton has 7336 states and 11999 transitions. Word has length 83 [2022-11-03 02:09:43,555 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:09:43,555 INFO L495 AbstractCegarLoop]: Abstraction has 7336 states and 11999 transitions. [2022-11-03 02:09:43,556 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 2 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-11-03 02:09:43,556 INFO L276 IsEmpty]: Start isEmpty. Operand 7336 states and 11999 transitions. [2022-11-03 02:09:43,571 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2022-11-03 02:09:43,571 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:09:43,571 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, 1, 1, 1, 1] [2022-11-03 02:09:43,572 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-03 02:09:43,572 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting outgoing__wrappee__KeysErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__KeysErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:09:43,572 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:09:43,573 INFO L85 PathProgramCache]: Analyzing trace with hash -2048279994, now seen corresponding path program 1 times [2022-11-03 02:09:43,573 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:09:43,573 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [375213078] [2022-11-03 02:09:43,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:09:43,573 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:09:43,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:09:43,665 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-03 02:09:43,665 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:09:43,665 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [375213078] [2022-11-03 02:09:43,666 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [375213078] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:09:43,666 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:09:43,666 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 02:09:43,666 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1393403852] [2022-11-03 02:09:43,666 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:09:43,667 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:09:43,667 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:09:43,668 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:09:43,668 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:09:43,668 INFO L87 Difference]: Start difference. First operand 7336 states and 11999 transitions. Second operand has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 2 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-11-03 02:09:44,557 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:09:44,557 INFO L93 Difference]: Finished difference Result 18499 states and 30480 transitions. [2022-11-03 02:09:44,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:09:44,558 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 2 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 84 [2022-11-03 02:09:44,559 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:09:44,639 INFO L225 Difference]: With dead ends: 18499 [2022-11-03 02:09:44,640 INFO L226 Difference]: Without dead ends: 12285 [2022-11-03 02:09:44,659 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 02:09:44,660 INFO L413 NwaCegarLoop]: 207 mSDtfsCounter, 45 mSDsluCounter, 215 mSDsCounter, 0 mSdLazyCounter, 65 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 392 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 65 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 02:09:44,660 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [63 Valid, 392 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 65 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 02:09:44,674 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12285 states. [2022-11-03 02:09:45,570 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12285 to 12280. [2022-11-03 02:09:45,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12280 states, 8991 states have (on average 1.5009453898342788) internal successors, (13495), 8993 states have internal predecessors, (13495), 3266 states have call successors, (3266), 22 states have call predecessors, (3266), 22 states have return successors, (3265), 3264 states have call predecessors, (3265), 3265 states have call successors, (3265) [2022-11-03 02:09:45,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12280 states to 12280 states and 20026 transitions. [2022-11-03 02:09:45,652 INFO L78 Accepts]: Start accepts. Automaton has 12280 states and 20026 transitions. Word has length 84 [2022-11-03 02:09:45,653 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:09:45,653 INFO L495 AbstractCegarLoop]: Abstraction has 12280 states and 20026 transitions. [2022-11-03 02:09:45,654 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 2 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-11-03 02:09:45,654 INFO L276 IsEmpty]: Start isEmpty. Operand 12280 states and 20026 transitions. [2022-11-03 02:09:45,674 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2022-11-03 02:09:45,674 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:09:45,675 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, 1, 1, 1, 1, 1] [2022-11-03 02:09:45,675 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-03 02:09:45,675 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting outgoing__wrappee__KeysErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__KeysErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:09:45,675 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:09:45,676 INFO L85 PathProgramCache]: Analyzing trace with hash -1261402455, now seen corresponding path program 1 times [2022-11-03 02:09:45,676 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:09:45,676 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [833361015] [2022-11-03 02:09:45,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:09:45,676 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:09:45,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:09:45,756 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-03 02:09:45,756 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:09:45,757 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [833361015] [2022-11-03 02:09:45,757 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [833361015] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:09:45,757 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:09:45,757 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 02:09:45,757 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1224651913] [2022-11-03 02:09:45,758 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:09:45,758 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:09:45,759 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:09:45,759 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:09:45,759 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:09:45,760 INFO L87 Difference]: Start difference. First operand 12280 states and 20026 transitions. Second operand has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 2 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-11-03 02:09:47,348 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:09:47,348 INFO L93 Difference]: Finished difference Result 32503 states and 53342 transitions. [2022-11-03 02:09:47,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:09:47,349 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 2 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 85 [2022-11-03 02:09:47,349 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:09:47,457 INFO L225 Difference]: With dead ends: 32503 [2022-11-03 02:09:47,457 INFO L226 Difference]: Without dead ends: 21797 [2022-11-03 02:09:47,499 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 02:09:47,500 INFO L413 NwaCegarLoop]: 209 mSDtfsCounter, 43 mSDsluCounter, 218 mSDsCounter, 0 mSdLazyCounter, 66 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 396 SdHoareTripleChecker+Invalid, 67 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 66 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 02:09:47,500 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [61 Valid, 396 Invalid, 67 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 66 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 02:09:47,528 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21797 states. [2022-11-03 02:09:49,326 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21797 to 21792. [2022-11-03 02:09:49,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21792 states, 16053 states have (on average 1.4930542577711332) internal successors, (23968), 16055 states have internal predecessors, (23968), 5716 states have call successors, (5716), 22 states have call predecessors, (5716), 22 states have return successors, (5715), 5714 states have call predecessors, (5715), 5715 states have call successors, (5715) [2022-11-03 02:09:49,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21792 states to 21792 states and 35399 transitions. [2022-11-03 02:09:49,450 INFO L78 Accepts]: Start accepts. Automaton has 21792 states and 35399 transitions. Word has length 85 [2022-11-03 02:09:49,452 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:09:49,452 INFO L495 AbstractCegarLoop]: Abstraction has 21792 states and 35399 transitions. [2022-11-03 02:09:49,452 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 2 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-11-03 02:09:49,452 INFO L276 IsEmpty]: Start isEmpty. Operand 21792 states and 35399 transitions. [2022-11-03 02:09:49,471 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2022-11-03 02:09:49,472 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:09:49,472 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, 1, 1, 1, 1, 1, 1] [2022-11-03 02:09:49,472 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-03 02:09:49,472 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting outgoing__wrappee__KeysErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__KeysErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:09:49,478 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:09:49,478 INFO L85 PathProgramCache]: Analyzing trace with hash -1793468980, now seen corresponding path program 1 times [2022-11-03 02:09:49,479 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:09:49,479 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [435105725] [2022-11-03 02:09:49,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:09:49,479 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:09:49,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:09:49,707 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-03 02:09:49,707 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:09:49,707 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [435105725] [2022-11-03 02:09:49,707 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [435105725] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:09:49,707 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:09:49,708 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 02:09:49,708 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [170856968] [2022-11-03 02:09:49,708 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:09:49,708 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:09:49,708 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:09:49,709 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:09:49,709 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:09:49,709 INFO L87 Difference]: Start difference. First operand 21792 states and 35399 transitions. Second operand has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 2 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-11-03 02:09:52,193 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:09:52,193 INFO L93 Difference]: Finished difference Result 59190 states and 96594 transitions. [2022-11-03 02:09:52,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:09:52,194 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 2 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 86 [2022-11-03 02:09:52,194 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:09:52,385 INFO L225 Difference]: With dead ends: 59190 [2022-11-03 02:09:52,385 INFO L226 Difference]: Without dead ends: 39567 [2022-11-03 02:09:52,459 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 02:09:52,460 INFO L413 NwaCegarLoop]: 210 mSDtfsCounter, 41 mSDsluCounter, 218 mSDsCounter, 0 mSdLazyCounter, 66 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 59 SdHoareTripleChecker+Valid, 397 SdHoareTripleChecker+Invalid, 67 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 66 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 02:09:52,460 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [59 Valid, 397 Invalid, 67 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 66 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 02:09:52,507 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39567 states. [2022-11-03 02:09:55,795 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39567 to 39562. [2022-11-03 02:09:55,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39562 states, 29310 states have (on average 1.4822244967587854) internal successors, (43444), 29312 states have internal predecessors, (43444), 10229 states have call successors, (10229), 22 states have call predecessors, (10229), 22 states have return successors, (10228), 10227 states have call predecessors, (10228), 10228 states have call successors, (10228) [2022-11-03 02:09:56,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39562 states to 39562 states and 63901 transitions. [2022-11-03 02:09:56,029 INFO L78 Accepts]: Start accepts. Automaton has 39562 states and 63901 transitions. Word has length 86 [2022-11-03 02:09:56,029 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:09:56,030 INFO L495 AbstractCegarLoop]: Abstraction has 39562 states and 63901 transitions. [2022-11-03 02:09:56,030 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 2 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-11-03 02:09:56,030 INFO L276 IsEmpty]: Start isEmpty. Operand 39562 states and 63901 transitions. [2022-11-03 02:09:56,057 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2022-11-03 02:09:56,058 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:09:56,058 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, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:09:56,058 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-03 02:09:56,058 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting outgoing__wrappee__KeysErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__KeysErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:09:56,059 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:09:56,059 INFO L85 PathProgramCache]: Analyzing trace with hash -621422423, now seen corresponding path program 1 times [2022-11-03 02:09:56,059 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:09:56,059 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [585792069] [2022-11-03 02:09:56,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:09:56,060 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:09:56,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:09:56,168 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-03 02:09:56,168 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:09:56,168 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [585792069] [2022-11-03 02:09:56,168 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [585792069] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:09:56,169 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:09:56,169 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 02:09:56,169 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [167406770] [2022-11-03 02:09:56,169 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:09:56,171 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:09:56,171 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:09:56,172 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:09:56,172 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:09:56,172 INFO L87 Difference]: Start difference. First operand 39562 states and 63901 transitions. Second operand has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 2 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-11-03 02:10:00,593 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:10:00,593 INFO L93 Difference]: Finished difference Result 73088 states and 118229 transitions. [2022-11-03 02:10:00,593 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:10:00,593 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 2 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 87 [2022-11-03 02:10:00,594 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:10:00,896 INFO L225 Difference]: With dead ends: 73088 [2022-11-03 02:10:00,897 INFO L226 Difference]: Without dead ends: 73010 [2022-11-03 02:10:00,923 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 02:10:00,924 INFO L413 NwaCegarLoop]: 209 mSDtfsCounter, 39 mSDsluCounter, 218 mSDsCounter, 0 mSdLazyCounter, 66 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 57 SdHoareTripleChecker+Valid, 396 SdHoareTripleChecker+Invalid, 67 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 66 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 02:10:00,924 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [57 Valid, 396 Invalid, 67 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 66 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 02:10:00,992 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73010 states. [2022-11-03 02:10:06,129 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73010 to 73005. [2022-11-03 02:10:06,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73005 states, 54385 states have (on average 1.4681621770708835) internal successors, (79846), 54387 states have internal predecessors, (79846), 18597 states have call successors, (18597), 22 states have call predecessors, (18597), 22 states have return successors, (18596), 18595 states have call predecessors, (18596), 18596 states have call successors, (18596) [2022-11-03 02:10:06,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73005 states to 73005 states and 117039 transitions. [2022-11-03 02:10:06,556 INFO L78 Accepts]: Start accepts. Automaton has 73005 states and 117039 transitions. Word has length 87 [2022-11-03 02:10:06,556 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:10:06,556 INFO L495 AbstractCegarLoop]: Abstraction has 73005 states and 117039 transitions. [2022-11-03 02:10:06,556 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 2 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-11-03 02:10:06,557 INFO L276 IsEmpty]: Start isEmpty. Operand 73005 states and 117039 transitions. [2022-11-03 02:10:06,583 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2022-11-03 02:10:06,584 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:10:06,584 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, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:10:06,584 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-03 02:10:06,585 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting outgoing__wrappee__KeysErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__KeysErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:10:06,585 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:10:06,585 INFO L85 PathProgramCache]: Analyzing trace with hash 1649064653, now seen corresponding path program 1 times [2022-11-03 02:10:06,585 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:10:06,586 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [901696815] [2022-11-03 02:10:06,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:10:06,586 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:10:06,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:10:08,575 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-03 02:10:08,575 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:10:08,575 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [901696815] [2022-11-03 02:10:08,575 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [901696815] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:10:08,575 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:10:08,575 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-11-03 02:10:08,576 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [445157237] [2022-11-03 02:10:08,576 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:10:08,576 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-11-03 02:10:08,576 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:10:08,577 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-11-03 02:10:08,577 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=372, Unknown=0, NotChecked=0, Total=420 [2022-11-03 02:10:08,577 INFO L87 Difference]: Start difference. First operand 73005 states and 117039 transitions. Second operand has 21 states, 15 states have (on average 3.533333333333333) internal successors, (53), 15 states have internal predecessors, (53), 8 states have call successors, (16), 4 states have call predecessors, (16), 3 states have return successors, (13), 7 states have call predecessors, (13), 7 states have call successors, (13) [2022-11-03 02:10:15,438 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:10:15,439 INFO L93 Difference]: Finished difference Result 73089 states and 117161 transitions. [2022-11-03 02:10:15,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-11-03 02:10:15,448 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 15 states have (on average 3.533333333333333) internal successors, (53), 15 states have internal predecessors, (53), 8 states have call successors, (16), 4 states have call predecessors, (16), 3 states have return successors, (13), 7 states have call predecessors, (13), 7 states have call successors, (13) Word has length 88 [2022-11-03 02:10:15,448 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:10:16,059 INFO L225 Difference]: With dead ends: 73089 [2022-11-03 02:10:16,059 INFO L226 Difference]: Without dead ends: 73085 [2022-11-03 02:10:16,084 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 204 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=161, Invalid=1029, Unknown=0, NotChecked=0, Total=1190 [2022-11-03 02:10:16,086 INFO L413 NwaCegarLoop]: 210 mSDtfsCounter, 287 mSDsluCounter, 2660 mSDsCounter, 0 mSdLazyCounter, 2068 mSolverCounterSat, 93 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 300 SdHoareTripleChecker+Valid, 2454 SdHoareTripleChecker+Invalid, 2161 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 93 IncrementalHoareTripleChecker+Valid, 2068 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-11-03 02:10:16,086 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [300 Valid, 2454 Invalid, 2161 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [93 Valid, 2068 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-11-03 02:10:16,148 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73085 states.