./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/email_spec6_productSimulator.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 2329fc70 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94db1127-ea7d-45fe-9967-2c6d081f9d52/bin/utaipan-gh47qXpMRh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94db1127-ea7d-45fe-9967-2c6d081f9d52/bin/utaipan-gh47qXpMRh/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94db1127-ea7d-45fe-9967-2c6d081f9d52/bin/utaipan-gh47qXpMRh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94db1127-ea7d-45fe-9967-2c6d081f9d52/bin/utaipan-gh47qXpMRh/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/email_spec6_productSimulator.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94db1127-ea7d-45fe-9967-2c6d081f9d52/bin/utaipan-gh47qXpMRh/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94db1127-ea7d-45fe-9967-2c6d081f9d52/bin/utaipan-gh47qXpMRh --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 c86855dab8667fe80df418e2dda62d52081f1a657b6492a63fb3d2a1da4890b5 --- 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-2329fc7 [2022-12-14 04:46:04,038 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-14 04:46:04,040 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-14 04:46:04,068 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-14 04:46:04,069 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-14 04:46:04,070 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-14 04:46:04,072 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-14 04:46:04,075 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-14 04:46:04,077 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-14 04:46:04,083 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-14 04:46:04,083 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-14 04:46:04,084 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-14 04:46:04,084 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-14 04:46:04,085 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-14 04:46:04,086 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-14 04:46:04,086 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-14 04:46:04,087 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-14 04:46:04,087 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-14 04:46:04,088 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-14 04:46:04,089 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-14 04:46:04,090 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-14 04:46:04,091 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-14 04:46:04,092 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-14 04:46:04,092 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-14 04:46:04,094 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-14 04:46:04,094 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-14 04:46:04,095 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-14 04:46:04,095 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-14 04:46:04,095 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-14 04:46:04,096 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-14 04:46:04,096 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-14 04:46:04,097 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-14 04:46:04,097 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-14 04:46:04,098 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-14 04:46:04,098 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-14 04:46:04,099 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-14 04:46:04,099 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-14 04:46:04,099 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-14 04:46:04,099 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-14 04:46:04,100 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-14 04:46:04,100 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-14 04:46:04,101 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94db1127-ea7d-45fe-9967-2c6d081f9d52/bin/utaipan-gh47qXpMRh/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-12-14 04:46:04,114 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-14 04:46:04,115 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-14 04:46:04,115 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-14 04:46:04,115 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-14 04:46:04,115 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-14 04:46:04,115 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-14 04:46:04,116 INFO L138 SettingsManager]: * User list type=DISABLED [2022-12-14 04:46:04,116 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-12-14 04:46:04,116 INFO L138 SettingsManager]: * Explicit value domain=true [2022-12-14 04:46:04,116 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-12-14 04:46:04,116 INFO L138 SettingsManager]: * Octagon Domain=false [2022-12-14 04:46:04,116 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-12-14 04:46:04,116 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-12-14 04:46:04,116 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-12-14 04:46:04,116 INFO L138 SettingsManager]: * Interval Domain=false [2022-12-14 04:46:04,116 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-12-14 04:46:04,117 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-12-14 04:46:04,117 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-12-14 04:46:04,117 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-14 04:46:04,117 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-14 04:46:04,117 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-14 04:46:04,117 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-14 04:46:04,117 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-14 04:46:04,118 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-14 04:46:04,118 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-14 04:46:04,118 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-14 04:46:04,118 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-14 04:46:04,118 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-14 04:46:04,118 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-14 04:46:04,118 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-14 04:46:04,118 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-14 04:46:04,118 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-14 04:46:04,118 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 04:46:04,119 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-14 04:46:04,119 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-12-14 04:46:04,119 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-14 04:46:04,119 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-14 04:46:04,119 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-12-14 04:46:04,119 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-14 04:46:04,119 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-14 04:46:04,119 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-12-14 04:46:04,119 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_94db1127-ea7d-45fe-9967-2c6d081f9d52/bin/utaipan-gh47qXpMRh/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94db1127-ea7d-45fe-9967-2c6d081f9d52/bin/utaipan-gh47qXpMRh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c86855dab8667fe80df418e2dda62d52081f1a657b6492a63fb3d2a1da4890b5 [2022-12-14 04:46:04,272 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-14 04:46:04,309 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-14 04:46:04,312 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-14 04:46:04,313 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-14 04:46:04,313 INFO L275 PluginConnector]: CDTParser initialized [2022-12-14 04:46:04,314 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94db1127-ea7d-45fe-9967-2c6d081f9d52/bin/utaipan-gh47qXpMRh/../../sv-benchmarks/c/product-lines/email_spec6_productSimulator.cil.c [2022-12-14 04:46:06,931 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-14 04:46:07,250 INFO L351 CDTParser]: Found 1 translation units. [2022-12-14 04:46:07,251 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94db1127-ea7d-45fe-9967-2c6d081f9d52/sv-benchmarks/c/product-lines/email_spec6_productSimulator.cil.c [2022-12-14 04:46:07,277 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94db1127-ea7d-45fe-9967-2c6d081f9d52/bin/utaipan-gh47qXpMRh/data/f335d9b79/7803fc094c534af483c2d54fe3ebb485/FLAG65f2af1db [2022-12-14 04:46:07,291 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94db1127-ea7d-45fe-9967-2c6d081f9d52/bin/utaipan-gh47qXpMRh/data/f335d9b79/7803fc094c534af483c2d54fe3ebb485 [2022-12-14 04:46:07,293 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-14 04:46:07,295 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-14 04:46:07,296 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-14 04:46:07,296 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-14 04:46:07,300 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-14 04:46:07,301 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 04:46:07" (1/1) ... [2022-12-14 04:46:07,302 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@316a03f1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:46:07, skipping insertion in model container [2022-12-14 04:46:07,302 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 04:46:07" (1/1) ... [2022-12-14 04:46:07,310 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-14 04:46:07,370 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-14 04:46:07,518 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 04:46:07,527 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 04:46:07,616 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94db1127-ea7d-45fe-9967-2c6d081f9d52/sv-benchmarks/c/product-lines/email_spec6_productSimulator.cil.c[17001,17014] [2022-12-14 04:46:07,743 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 04:46:07,744 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 04:46:07,747 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 04:46:07,779 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 04:46:07,785 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 04:46:07,786 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 04:46:07,789 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 04:46:07,801 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 04:46:07,803 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 04:46:07,804 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 04:46:07,817 INFO L203 MainTranslator]: Completed pre-run [2022-12-14 04:46:07,828 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 04:46:07,829 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 04:46:07,854 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94db1127-ea7d-45fe-9967-2c6d081f9d52/sv-benchmarks/c/product-lines/email_spec6_productSimulator.cil.c[17001,17014] [2022-12-14 04:46:07,889 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 04:46:07,890 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 04:46:07,892 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 04:46:07,906 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 04:46:07,908 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 04:46:07,909 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 04:46:07,910 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 04:46:07,917 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 04:46:07,919 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 04:46:07,920 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 04:46:07,953 INFO L208 MainTranslator]: Completed translation [2022-12-14 04:46:07,953 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:46:07 WrapperNode [2022-12-14 04:46:07,953 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-14 04:46:07,955 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-14 04:46:07,955 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-14 04:46:07,955 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-14 04:46:07,960 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:46:07" (1/1) ... [2022-12-14 04:46:07,987 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:46:07" (1/1) ... [2022-12-14 04:46:08,041 INFO L138 Inliner]: procedures = 152, calls = 290, calls flagged for inlining = 68, calls inlined = 65, statements flattened = 1339 [2022-12-14 04:46:08,042 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-14 04:46:08,043 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-14 04:46:08,043 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-14 04:46:08,043 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-14 04:46:08,052 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:46:07" (1/1) ... [2022-12-14 04:46:08,052 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:46:07" (1/1) ... [2022-12-14 04:46:08,060 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:46:07" (1/1) ... [2022-12-14 04:46:08,061 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:46:07" (1/1) ... [2022-12-14 04:46:08,083 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:46:07" (1/1) ... [2022-12-14 04:46:08,093 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:46:07" (1/1) ... [2022-12-14 04:46:08,100 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:46:07" (1/1) ... [2022-12-14 04:46:08,105 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:46:07" (1/1) ... [2022-12-14 04:46:08,115 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-14 04:46:08,116 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-14 04:46:08,117 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-14 04:46:08,117 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-14 04:46:08,118 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:46:07" (1/1) ... [2022-12-14 04:46:08,125 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 04:46:08,135 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94db1127-ea7d-45fe-9967-2c6d081f9d52/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 04:46:08,146 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94db1127-ea7d-45fe-9967-2c6d081f9d52/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-14 04:46:08,148 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94db1127-ea7d-45fe-9967-2c6d081f9d52/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-14 04:46:08,198 INFO L130 BoogieDeclarations]: Found specification of procedure getClientPrivateKey [2022-12-14 04:46:08,198 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientPrivateKey [2022-12-14 04:46:08,198 INFO L130 BoogieDeclarations]: Found specification of procedure setup_chuck__before__Keys [2022-12-14 04:46:08,198 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_chuck__before__Keys [2022-12-14 04:46:08,198 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing__before__Sign [2022-12-14 04:46:08,198 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing__before__Sign [2022-12-14 04:46:08,198 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookSize [2022-12-14 04:46:08,199 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookSize [2022-12-14 04:46:08,199 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailEncryptionKey [2022-12-14 04:46:08,199 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailEncryptionKey [2022-12-14 04:46:08,199 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookAddress [2022-12-14 04:46:08,199 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookAddress [2022-12-14 04:46:08,199 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailEncryptionKey [2022-12-14 04:46:08,199 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailEncryptionKey [2022-12-14 04:46:08,199 INFO L130 BoogieDeclarations]: Found specification of procedure printMail__before__Verify [2022-12-14 04:46:08,199 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail__before__Verify [2022-12-14 04:46:08,199 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2022-12-14 04:46:08,200 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2022-12-14 04:46:08,200 INFO L130 BoogieDeclarations]: Found specification of procedure setup_bob__before__Keys [2022-12-14 04:46:08,200 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_bob__before__Keys [2022-12-14 04:46:08,200 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2022-12-14 04:46:08,200 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2022-12-14 04:46:08,200 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable [2022-12-14 04:46:08,200 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable [2022-12-14 04:46:08,200 INFO L130 BoogieDeclarations]: Found specification of procedure createClientKeyringEntry [2022-12-14 04:46:08,200 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientKeyringEntry [2022-12-14 04:46:08,200 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__before__Decrypt [2022-12-14 04:46:08,200 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__before__Decrypt [2022-12-14 04:46:08,201 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing__before__Encrypt [2022-12-14 04:46:08,201 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing__before__Encrypt [2022-12-14 04:46:08,201 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsEncrypted [2022-12-14 04:46:08,201 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsEncrypted [2022-12-14 04:46:08,201 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSignKey [2022-12-14 04:46:08,201 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSignKey [2022-12-14 04:46:08,201 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAdd [2022-12-14 04:46:08,201 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAdd [2022-12-14 04:46:08,201 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2022-12-14 04:46:08,201 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__before__Forward [2022-12-14 04:46:08,202 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__before__Forward [2022-12-14 04:46:08,202 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailFrom [2022-12-14 04:46:08,202 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailFrom [2022-12-14 04:46:08,202 INFO L130 BoogieDeclarations]: Found specification of procedure queue [2022-12-14 04:46:08,202 INFO L138 BoogieDeclarations]: Found implementation of procedure queue [2022-12-14 04:46:08,202 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2022-12-14 04:46:08,202 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2022-12-14 04:46:08,202 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable__before__Encrypt [2022-12-14 04:46:08,202 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable__before__Encrypt [2022-12-14 04:46:08,202 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-14 04:46:08,203 INFO L130 BoogieDeclarations]: Found specification of procedure isSigned [2022-12-14 04:46:08,203 INFO L138 BoogieDeclarations]: Found implementation of procedure isSigned [2022-12-14 04:46:08,203 INFO L130 BoogieDeclarations]: Found specification of procedure isKeyPairValid [2022-12-14 04:46:08,203 INFO L138 BoogieDeclarations]: Found implementation of procedure isKeyPairValid [2022-12-14 04:46:08,203 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing__before__AddressBook [2022-12-14 04:46:08,203 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing__before__AddressBook [2022-12-14 04:46:08,203 INFO L130 BoogieDeclarations]: Found specification of procedure printMail__before__Encrypt [2022-12-14 04:46:08,203 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail__before__Encrypt [2022-12-14 04:46:08,203 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__before__AutoResponder [2022-12-14 04:46:08,203 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__before__AutoResponder [2022-12-14 04:46:08,203 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookSize [2022-12-14 04:46:08,204 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookSize [2022-12-14 04:46:08,204 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringUser [2022-12-14 04:46:08,204 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringUser [2022-12-14 04:46:08,204 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringPublicKey [2022-12-14 04:46:08,204 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringPublicKey [2022-12-14 04:46:08,204 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2022-12-14 04:46:08,204 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2022-12-14 04:46:08,204 INFO L130 BoogieDeclarations]: Found specification of procedure findPublicKey [2022-12-14 04:46:08,204 INFO L138 BoogieDeclarations]: Found implementation of procedure findPublicKey [2022-12-14 04:46:08,204 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2022-12-14 04:46:08,205 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2022-12-14 04:46:08,205 INFO L130 BoogieDeclarations]: Found specification of procedure isEncrypted [2022-12-14 04:46:08,205 INFO L138 BoogieDeclarations]: Found implementation of procedure isEncrypted [2022-12-14 04:46:08,205 INFO L130 BoogieDeclarations]: Found specification of procedure setup_rjh__before__Keys [2022-12-14 04:46:08,205 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_rjh__before__Keys [2022-12-14 04:46:08,205 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__before__Verify [2022-12-14 04:46:08,205 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__before__Verify [2022-12-14 04:46:08,205 INFO L130 BoogieDeclarations]: Found specification of procedure setClientPrivateKey [2022-12-14 04:46:08,205 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientPrivateKey [2022-12-14 04:46:08,205 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailTo [2022-12-14 04:46:08,205 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailTo [2022-12-14 04:46:08,206 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-14 04:46:08,206 INFO L130 BoogieDeclarations]: Found specification of procedure generateKeyPair [2022-12-14 04:46:08,206 INFO L138 BoogieDeclarations]: Found implementation of procedure generateKeyPair [2022-12-14 04:46:08,206 INFO L130 BoogieDeclarations]: Found specification of procedure printMail__before__Sign [2022-12-14 04:46:08,206 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail__before__Sign [2022-12-14 04:46:08,206 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2022-12-14 04:46:08,206 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2022-12-14 04:46:08,206 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookAddress [2022-12-14 04:46:08,206 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookAddress [2022-12-14 04:46:08,206 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-14 04:46:08,207 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-14 04:46:08,432 INFO L235 CfgBuilder]: Building ICFG [2022-12-14 04:46:08,434 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-14 04:46:09,211 INFO L276 CfgBuilder]: Performing block encoding [2022-12-14 04:46:09,600 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-14 04:46:09,600 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-12-14 04:46:09,603 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 04:46:09 BoogieIcfgContainer [2022-12-14 04:46:09,603 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-14 04:46:09,605 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-14 04:46:09,605 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-14 04:46:09,607 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-14 04:46:09,607 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.12 04:46:07" (1/3) ... [2022-12-14 04:46:09,608 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@457d4715 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 04:46:09, skipping insertion in model container [2022-12-14 04:46:09,608 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:46:07" (2/3) ... [2022-12-14 04:46:09,608 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@457d4715 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 04:46:09, skipping insertion in model container [2022-12-14 04:46:09,608 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 04:46:09" (3/3) ... [2022-12-14 04:46:09,609 INFO L112 eAbstractionObserver]: Analyzing ICFG email_spec6_productSimulator.cil.c [2022-12-14 04:46:09,624 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-14 04:46:09,624 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-12-14 04:46:09,665 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-14 04:46:09,670 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;@71a265f7, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-14 04:46:09,670 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-12-14 04:46:09,674 INFO L276 IsEmpty]: Start isEmpty. Operand has 384 states, 227 states have (on average 1.330396475770925) internal successors, (302), 247 states have internal predecessors, (302), 112 states have call successors, (112), 43 states have call predecessors, (112), 43 states have return successors, (112), 111 states have call predecessors, (112), 112 states have call successors, (112) [2022-12-14 04:46:09,686 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2022-12-14 04:46:09,686 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 04:46:09,687 INFO L195 NwaCegarLoop]: trace histogram [8, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 04:46:09,687 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 04:46:09,691 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 04:46:09,691 INFO L85 PathProgramCache]: Analyzing trace with hash 1626371798, now seen corresponding path program 1 times [2022-12-14 04:46:09,698 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 04:46:09,699 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [745141619] [2022-12-14 04:46:09,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 04:46:09,699 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 04:46:09,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 04:46:10,027 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2022-12-14 04:46:10,027 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 04:46:10,027 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [745141619] [2022-12-14 04:46:10,028 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [745141619] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 04:46:10,028 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 04:46:10,028 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-14 04:46:10,030 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [342429857] [2022-12-14 04:46:10,030 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 04:46:10,035 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-12-14 04:46:10,035 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 04:46:10,062 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-12-14 04:46:10,063 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-12-14 04:46:10,066 INFO L87 Difference]: Start difference. First operand has 384 states, 227 states have (on average 1.330396475770925) internal successors, (302), 247 states have internal predecessors, (302), 112 states have call successors, (112), 43 states have call predecessors, (112), 43 states have return successors, (112), 111 states have call predecessors, (112), 112 states have call successors, (112) Second operand has 2 states, 2 states have (on average 29.0) internal successors, (58), 2 states have internal predecessors, (58), 2 states have call successors, (29), 2 states have call predecessors, (29), 1 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) [2022-12-14 04:46:10,231 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 04:46:10,231 INFO L93 Difference]: Finished difference Result 610 states and 828 transitions. [2022-12-14 04:46:10,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-12-14 04:46:10,233 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 29.0) internal successors, (58), 2 states have internal predecessors, (58), 2 states have call successors, (29), 2 states have call predecessors, (29), 1 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) Word has length 122 [2022-12-14 04:46:10,233 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 04:46:10,242 INFO L225 Difference]: With dead ends: 610 [2022-12-14 04:46:10,242 INFO L226 Difference]: Without dead ends: 381 [2022-12-14 04:46:10,246 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 [2022-12-14 04:46:10,248 INFO L413 NwaCegarLoop]: 470 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 470 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 04:46:10,248 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 470 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 04:46:10,262 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 381 states. [2022-12-14 04:46:10,293 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 381 to 381. [2022-12-14 04:46:10,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 381 states, 225 states have (on average 1.3155555555555556) internal successors, (296), 244 states have internal predecessors, (296), 112 states have call successors, (112), 43 states have call predecessors, (112), 43 states have return successors, (111), 110 states have call predecessors, (111), 111 states have call successors, (111) [2022-12-14 04:46:10,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 381 states to 381 states and 519 transitions. [2022-12-14 04:46:10,298 INFO L78 Accepts]: Start accepts. Automaton has 381 states and 519 transitions. Word has length 122 [2022-12-14 04:46:10,299 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 04:46:10,299 INFO L495 AbstractCegarLoop]: Abstraction has 381 states and 519 transitions. [2022-12-14 04:46:10,299 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 29.0) internal successors, (58), 2 states have internal predecessors, (58), 2 states have call successors, (29), 2 states have call predecessors, (29), 1 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) [2022-12-14 04:46:10,300 INFO L276 IsEmpty]: Start isEmpty. Operand 381 states and 519 transitions. [2022-12-14 04:46:10,303 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2022-12-14 04:46:10,303 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 04:46:10,303 INFO L195 NwaCegarLoop]: trace histogram [8, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 04:46:10,304 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-14 04:46:10,304 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 04:46:10,304 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 04:46:10,304 INFO L85 PathProgramCache]: Analyzing trace with hash -1458886187, now seen corresponding path program 1 times [2022-12-14 04:46:10,304 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 04:46:10,305 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [336803975] [2022-12-14 04:46:10,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 04:46:10,305 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 04:46:10,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 04:46:10,450 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2022-12-14 04:46:10,451 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 04:46:10,451 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [336803975] [2022-12-14 04:46:10,451 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [336803975] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 04:46:10,451 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 04:46:10,452 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 04:46:10,452 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1994108416] [2022-12-14 04:46:10,452 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 04:46:10,453 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 04:46:10,453 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 04:46:10,454 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 04:46:10,454 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 04:46:10,455 INFO L87 Difference]: Start difference. First operand 381 states and 519 transitions. Second operand has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 2 states have call successors, (27), 2 states have call predecessors, (27), 1 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) [2022-12-14 04:46:10,597 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 04:46:10,597 INFO L93 Difference]: Finished difference Result 606 states and 808 transitions. [2022-12-14 04:46:10,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 04:46:10,598 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 2 states have call successors, (27), 2 states have call predecessors, (27), 1 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) Word has length 114 [2022-12-14 04:46:10,598 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 04:46:10,601 INFO L225 Difference]: With dead ends: 606 [2022-12-14 04:46:10,602 INFO L226 Difference]: Without dead ends: 383 [2022-12-14 04:46:10,604 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 [2022-12-14 04:46:10,605 INFO L413 NwaCegarLoop]: 467 mSDtfsCounter, 0 mSDsluCounter, 466 mSDsCounter, 0 mSdLazyCounter, 104 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 933 SdHoareTripleChecker+Invalid, 104 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 104 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 04:46:10,606 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 933 Invalid, 104 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 104 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 04:46:10,607 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 383 states. [2022-12-14 04:46:10,646 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 383 to 383. [2022-12-14 04:46:10,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 383 states, 227 states have (on average 1.3127753303964758) internal successors, (298), 246 states have internal predecessors, (298), 112 states have call successors, (112), 43 states have call predecessors, (112), 43 states have return successors, (111), 110 states have call predecessors, (111), 111 states have call successors, (111) [2022-12-14 04:46:10,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 383 states to 383 states and 521 transitions. [2022-12-14 04:46:10,651 INFO L78 Accepts]: Start accepts. Automaton has 383 states and 521 transitions. Word has length 114 [2022-12-14 04:46:10,651 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 04:46:10,651 INFO L495 AbstractCegarLoop]: Abstraction has 383 states and 521 transitions. [2022-12-14 04:46:10,652 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 2 states have call successors, (27), 2 states have call predecessors, (27), 1 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) [2022-12-14 04:46:10,652 INFO L276 IsEmpty]: Start isEmpty. Operand 383 states and 521 transitions. [2022-12-14 04:46:10,656 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2022-12-14 04:46:10,656 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 04:46:10,657 INFO L195 NwaCegarLoop]: trace histogram [8, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 04:46:10,657 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-14 04:46:10,657 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 04:46:10,658 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 04:46:10,658 INFO L85 PathProgramCache]: Analyzing trace with hash -2105413075, now seen corresponding path program 1 times [2022-12-14 04:46:10,658 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 04:46:10,658 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [926002501] [2022-12-14 04:46:10,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 04:46:10,659 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 04:46:10,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 04:46:10,779 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2022-12-14 04:46:10,779 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 04:46:10,779 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [926002501] [2022-12-14 04:46:10,779 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [926002501] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 04:46:10,780 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 04:46:10,780 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 04:46:10,780 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [566806965] [2022-12-14 04:46:10,780 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 04:46:10,781 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 04:46:10,781 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 04:46:10,782 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 04:46:10,782 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 04:46:10,782 INFO L87 Difference]: Start difference. First operand 383 states and 521 transitions. Second operand has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 2 states have call successors, (27), 2 states have call predecessors, (27), 1 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) [2022-12-14 04:46:10,935 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 04:46:10,936 INFO L93 Difference]: Finished difference Result 765 states and 1056 transitions. [2022-12-14 04:46:10,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 04:46:10,936 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 2 states have call successors, (27), 2 states have call predecessors, (27), 1 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) Word has length 119 [2022-12-14 04:46:10,937 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 04:46:10,940 INFO L225 Difference]: With dead ends: 765 [2022-12-14 04:46:10,940 INFO L226 Difference]: Without dead ends: 450 [2022-12-14 04:46:10,942 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 [2022-12-14 04:46:10,942 INFO L413 NwaCegarLoop]: 491 mSDtfsCounter, 84 mSDsluCounter, 459 mSDsCounter, 0 mSdLazyCounter, 105 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 102 SdHoareTripleChecker+Valid, 950 SdHoareTripleChecker+Invalid, 106 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 105 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 04:46:10,943 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [102 Valid, 950 Invalid, 106 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 105 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 04:46:10,944 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 450 states. [2022-12-14 04:46:10,958 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 450 to 445. [2022-12-14 04:46:10,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 445 states, 275 states have (on average 1.3636363636363635) internal successors, (375), 296 states have internal predecessors, (375), 126 states have call successors, (126), 43 states have call predecessors, (126), 43 states have return successors, (125), 124 states have call predecessors, (125), 125 states have call successors, (125) [2022-12-14 04:46:10,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 445 states to 445 states and 626 transitions. [2022-12-14 04:46:10,961 INFO L78 Accepts]: Start accepts. Automaton has 445 states and 626 transitions. Word has length 119 [2022-12-14 04:46:10,961 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 04:46:10,961 INFO L495 AbstractCegarLoop]: Abstraction has 445 states and 626 transitions. [2022-12-14 04:46:10,961 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 2 states have call successors, (27), 2 states have call predecessors, (27), 1 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) [2022-12-14 04:46:10,961 INFO L276 IsEmpty]: Start isEmpty. Operand 445 states and 626 transitions. [2022-12-14 04:46:10,963 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2022-12-14 04:46:10,963 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 04:46:10,963 INFO L195 NwaCegarLoop]: trace histogram [8, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 04:46:10,963 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-12-14 04:46:10,964 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 04:46:10,964 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 04:46:10,964 INFO L85 PathProgramCache]: Analyzing trace with hash -1372729957, now seen corresponding path program 1 times [2022-12-14 04:46:10,964 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 04:46:10,964 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [227166695] [2022-12-14 04:46:10,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 04:46:10,965 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 04:46:10,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 04:46:11,123 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2022-12-14 04:46:11,123 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 04:46:11,123 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [227166695] [2022-12-14 04:46:11,124 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [227166695] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 04:46:11,124 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1046552350] [2022-12-14 04:46:11,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 04:46:11,124 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 04:46:11,124 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94db1127-ea7d-45fe-9967-2c6d081f9d52/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 04:46:11,125 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94db1127-ea7d-45fe-9967-2c6d081f9d52/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 04:46:11,126 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94db1127-ea7d-45fe-9967-2c6d081f9d52/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-12-14 04:46:11,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 04:46:11,401 INFO L263 TraceCheckSpWp]: Trace formula consists of 1394 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-14 04:46:11,408 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 04:46:11,461 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2022-12-14 04:46:11,461 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 04:46:11,546 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2022-12-14 04:46:11,547 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1046552350] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 04:46:11,547 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [709196078] [2022-12-14 04:46:11,568 INFO L159 IcfgInterpreter]: Started Sifa with 106 locations of interest [2022-12-14 04:46:11,568 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 04:46:11,572 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 04:46:11,577 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 04:46:11,578 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 04:46:23,423 INFO L197 IcfgInterpreter]: Interpreting procedure select_one with input of size 463 for LOIs [2022-12-14 04:46:23,729 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 04:46:55,867 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [709196078] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 04:46:55,867 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-12-14 04:46:55,867 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [4, 4, 4] total 28 [2022-12-14 04:46:55,867 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [837560932] [2022-12-14 04:46:55,868 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 04:46:55,868 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-12-14 04:46:55,868 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 04:46:55,869 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-12-14 04:46:55,869 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=139, Invalid=617, Unknown=0, NotChecked=0, Total=756 [2022-12-14 04:46:55,869 INFO L87 Difference]: Start difference. First operand 445 states and 626 transitions. Second operand has 23 states, 14 states have (on average 4.571428571428571) internal successors, (64), 13 states have internal predecessors, (64), 9 states have call successors, (29), 2 states have call predecessors, (29), 2 states have return successors, (24), 9 states have call predecessors, (24), 9 states have call successors, (24) [2022-12-14 04:47:37,046 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 04:47:37,046 INFO L93 Difference]: Finished difference Result 903 states and 1259 transitions. [2022-12-14 04:47:37,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-12-14 04:47:37,047 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 14 states have (on average 4.571428571428571) internal successors, (64), 13 states have internal predecessors, (64), 9 states have call successors, (29), 2 states have call predecessors, (29), 2 states have return successors, (24), 9 states have call predecessors, (24), 9 states have call successors, (24) Word has length 129 [2022-12-14 04:47:37,047 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 04:47:37,048 INFO L225 Difference]: With dead ends: 903 [2022-12-14 04:47:37,049 INFO L226 Difference]: Without dead ends: 475 [2022-12-14 04:47:37,050 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 399 GetRequests, 363 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 428 ImplicationChecksByTransitivity, 70.6s TimeCoverageRelationStatistics Valid=233, Invalid=1173, Unknown=0, NotChecked=0, Total=1406 [2022-12-14 04:47:37,051 INFO L413 NwaCegarLoop]: 437 mSDtfsCounter, 123 mSDsluCounter, 738 mSDsCounter, 0 mSdLazyCounter, 735 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 123 SdHoareTripleChecker+Valid, 1175 SdHoareTripleChecker+Invalid, 760 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 735 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2022-12-14 04:47:37,051 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [123 Valid, 1175 Invalid, 760 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 735 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2022-12-14 04:47:37,052 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 475 states. [2022-12-14 04:47:37,122 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 475 to 467. [2022-12-14 04:47:37,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 467 states, 290 states have (on average 1.3413793103448275) internal successors, (389), 311 states have internal predecessors, (389), 126 states have call successors, (126), 50 states have call predecessors, (126), 50 states have return successors, (125), 124 states have call predecessors, (125), 125 states have call successors, (125) [2022-12-14 04:47:37,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 467 states to 467 states and 640 transitions. [2022-12-14 04:47:37,125 INFO L78 Accepts]: Start accepts. Automaton has 467 states and 640 transitions. Word has length 129 [2022-12-14 04:47:37,125 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 04:47:37,125 INFO L495 AbstractCegarLoop]: Abstraction has 467 states and 640 transitions. [2022-12-14 04:47:37,125 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 14 states have (on average 4.571428571428571) internal successors, (64), 13 states have internal predecessors, (64), 9 states have call successors, (29), 2 states have call predecessors, (29), 2 states have return successors, (24), 9 states have call predecessors, (24), 9 states have call successors, (24) [2022-12-14 04:47:37,125 INFO L276 IsEmpty]: Start isEmpty. Operand 467 states and 640 transitions. [2022-12-14 04:47:37,127 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2022-12-14 04:47:37,127 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 04:47:37,128 INFO L195 NwaCegarLoop]: trace histogram [8, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 04:47:37,135 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94db1127-ea7d-45fe-9967-2c6d081f9d52/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-12-14 04:47:37,328 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94db1127-ea7d-45fe-9967-2c6d081f9d52/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 04:47:37,329 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 04:47:37,329 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 04:47:37,329 INFO L85 PathProgramCache]: Analyzing trace with hash -343166698, now seen corresponding path program 1 times [2022-12-14 04:47:37,329 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 04:47:37,329 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2109518484] [2022-12-14 04:47:37,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 04:47:37,330 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 04:47:37,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 04:47:37,478 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2022-12-14 04:47:37,478 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 04:47:37,478 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2109518484] [2022-12-14 04:47:37,478 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2109518484] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 04:47:37,479 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1451580663] [2022-12-14 04:47:37,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 04:47:37,479 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 04:47:37,479 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94db1127-ea7d-45fe-9967-2c6d081f9d52/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 04:47:37,480 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94db1127-ea7d-45fe-9967-2c6d081f9d52/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 04:47:37,481 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94db1127-ea7d-45fe-9967-2c6d081f9d52/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-12-14 04:47:37,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 04:47:37,698 INFO L263 TraceCheckSpWp]: Trace formula consists of 1355 conjuncts, 2 conjunts are in the unsatisfiable core [2022-12-14 04:47:37,704 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 04:47:37,779 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2022-12-14 04:47:37,779 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 04:47:37,779 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1451580663] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 04:47:37,780 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-14 04:47:37,780 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2022-12-14 04:47:37,780 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1498337569] [2022-12-14 04:47:37,780 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 04:47:37,780 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 04:47:37,780 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 04:47:37,781 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 04:47:37,781 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-12-14 04:47:37,781 INFO L87 Difference]: Start difference. First operand 467 states and 640 transitions. Second operand has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 3 states have call successors, (27), 3 states have call predecessors, (27), 3 states have return successors, (22), 3 states have call predecessors, (22), 3 states have call successors, (22) [2022-12-14 04:47:37,930 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 04:47:37,930 INFO L93 Difference]: Finished difference Result 679 states and 928 transitions. [2022-12-14 04:47:37,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 04:47:37,931 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 3 states have call successors, (27), 3 states have call predecessors, (27), 3 states have return successors, (22), 3 states have call predecessors, (22), 3 states have call successors, (22) Word has length 124 [2022-12-14 04:47:37,932 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 04:47:37,933 INFO L225 Difference]: With dead ends: 679 [2022-12-14 04:47:37,933 INFO L226 Difference]: Without dead ends: 463 [2022-12-14 04:47:37,934 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 127 GetRequests, 124 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-12-14 04:47:37,935 INFO L413 NwaCegarLoop]: 447 mSDtfsCounter, 421 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 421 SdHoareTripleChecker+Valid, 452 SdHoareTripleChecker+Invalid, 63 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 04:47:37,935 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [421 Valid, 452 Invalid, 63 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 04:47:37,936 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 463 states. [2022-12-14 04:47:38,001 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 463 to 463. [2022-12-14 04:47:38,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 463 states, 289 states have (on average 1.3321799307958477) internal successors, (385), 308 states have internal predecessors, (385), 123 states have call successors, (123), 50 states have call predecessors, (123), 50 states have return successors, (122), 121 states have call predecessors, (122), 122 states have call successors, (122) [2022-12-14 04:47:38,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 463 states to 463 states and 630 transitions. [2022-12-14 04:47:38,003 INFO L78 Accepts]: Start accepts. Automaton has 463 states and 630 transitions. Word has length 124 [2022-12-14 04:47:38,004 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 04:47:38,004 INFO L495 AbstractCegarLoop]: Abstraction has 463 states and 630 transitions. [2022-12-14 04:47:38,004 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 3 states have call successors, (27), 3 states have call predecessors, (27), 3 states have return successors, (22), 3 states have call predecessors, (22), 3 states have call successors, (22) [2022-12-14 04:47:38,004 INFO L276 IsEmpty]: Start isEmpty. Operand 463 states and 630 transitions. [2022-12-14 04:47:38,005 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2022-12-14 04:47:38,005 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 04:47:38,006 INFO L195 NwaCegarLoop]: trace histogram [8, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 04:47:38,013 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94db1127-ea7d-45fe-9967-2c6d081f9d52/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-12-14 04:47:38,206 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94db1127-ea7d-45fe-9967-2c6d081f9d52/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 04:47:38,207 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 04:47:38,207 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 04:47:38,207 INFO L85 PathProgramCache]: Analyzing trace with hash 1242325161, now seen corresponding path program 1 times [2022-12-14 04:47:38,207 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 04:47:38,208 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1705457311] [2022-12-14 04:47:38,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 04:47:38,208 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 04:47:38,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 04:47:38,364 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2022-12-14 04:47:38,364 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 04:47:38,364 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1705457311] [2022-12-14 04:47:38,365 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1705457311] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 04:47:38,365 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2070504093] [2022-12-14 04:47:38,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 04:47:38,365 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 04:47:38,365 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94db1127-ea7d-45fe-9967-2c6d081f9d52/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 04:47:38,366 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94db1127-ea7d-45fe-9967-2c6d081f9d52/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 04:47:38,367 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94db1127-ea7d-45fe-9967-2c6d081f9d52/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-12-14 04:47:38,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 04:47:38,625 INFO L263 TraceCheckSpWp]: Trace formula consists of 1398 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-14 04:47:38,628 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 04:47:38,644 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2022-12-14 04:47:38,644 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 04:47:38,706 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2022-12-14 04:47:38,706 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2070504093] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 04:47:38,706 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [391266907] [2022-12-14 04:47:38,710 INFO L159 IcfgInterpreter]: Started Sifa with 110 locations of interest [2022-12-14 04:47:38,710 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 04:47:38,711 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 04:47:38,711 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 04:47:38,711 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 04:47:49,428 INFO L197 IcfgInterpreter]: Interpreting procedure select_one with input of size 463 for LOIs [2022-12-14 04:47:49,708 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 04:48:23,009 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [391266907] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 04:48:23,009 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-12-14 04:48:23,009 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [23] imperfect sequences [4, 4, 4] total 29 [2022-12-14 04:48:23,010 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1373158033] [2022-12-14 04:48:23,010 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 04:48:23,010 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-12-14 04:48:23,010 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 04:48:23,011 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-12-14 04:48:23,011 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=140, Invalid=672, Unknown=0, NotChecked=0, Total=812 [2022-12-14 04:48:23,012 INFO L87 Difference]: Start difference. First operand 463 states and 630 transitions. Second operand has 24 states, 15 states have (on average 4.533333333333333) internal successors, (68), 14 states have internal predecessors, (68), 9 states have call successors, (29), 2 states have call predecessors, (29), 2 states have return successors, (24), 9 states have call predecessors, (24), 9 states have call successors, (24) [2022-12-14 04:49:02,767 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 04:49:02,767 INFO L93 Difference]: Finished difference Result 875 states and 1198 transitions. [2022-12-14 04:49:02,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-12-14 04:49:02,768 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 15 states have (on average 4.533333333333333) internal successors, (68), 14 states have internal predecessors, (68), 9 states have call successors, (29), 2 states have call predecessors, (29), 2 states have return successors, (24), 9 states have call predecessors, (24), 9 states have call successors, (24) Word has length 133 [2022-12-14 04:49:02,769 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 04:49:02,770 INFO L225 Difference]: With dead ends: 875 [2022-12-14 04:49:02,770 INFO L226 Difference]: Without dead ends: 455 [2022-12-14 04:49:02,771 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 409 GetRequests, 374 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 450 ImplicationChecksByTransitivity, 68.3s TimeCoverageRelationStatistics Valid=218, Invalid=1114, Unknown=0, NotChecked=0, Total=1332 [2022-12-14 04:49:02,772 INFO L413 NwaCegarLoop]: 426 mSDtfsCounter, 37 mSDsluCounter, 2896 mSDsCounter, 0 mSdLazyCounter, 1222 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 3322 SdHoareTripleChecker+Invalid, 1231 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 1222 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.6s IncrementalHoareTripleChecker+Time [2022-12-14 04:49:02,772 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [37 Valid, 3322 Invalid, 1231 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 1222 Invalid, 0 Unknown, 0 Unchecked, 4.6s Time] [2022-12-14 04:49:02,773 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 455 states. [2022-12-14 04:49:02,839 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 455 to 455. [2022-12-14 04:49:02,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 455 states, 281 states have (on average 1.3202846975088969) internal successors, (371), 300 states have internal predecessors, (371), 123 states have call successors, (123), 50 states have call predecessors, (123), 50 states have return successors, (122), 121 states have call predecessors, (122), 122 states have call successors, (122) [2022-12-14 04:49:02,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 455 states to 455 states and 616 transitions. [2022-12-14 04:49:02,842 INFO L78 Accepts]: Start accepts. Automaton has 455 states and 616 transitions. Word has length 133 [2022-12-14 04:49:02,843 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 04:49:02,843 INFO L495 AbstractCegarLoop]: Abstraction has 455 states and 616 transitions. [2022-12-14 04:49:02,843 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 15 states have (on average 4.533333333333333) internal successors, (68), 14 states have internal predecessors, (68), 9 states have call successors, (29), 2 states have call predecessors, (29), 2 states have return successors, (24), 9 states have call predecessors, (24), 9 states have call successors, (24) [2022-12-14 04:49:02,843 INFO L276 IsEmpty]: Start isEmpty. Operand 455 states and 616 transitions. [2022-12-14 04:49:02,844 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2022-12-14 04:49:02,845 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 04:49:02,845 INFO L195 NwaCegarLoop]: trace histogram [8, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 04:49:02,851 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94db1127-ea7d-45fe-9967-2c6d081f9d52/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-12-14 04:49:03,045 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94db1127-ea7d-45fe-9967-2c6d081f9d52/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 04:49:03,045 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 04:49:03,046 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 04:49:03,046 INFO L85 PathProgramCache]: Analyzing trace with hash -1387303744, now seen corresponding path program 1 times [2022-12-14 04:49:03,046 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 04:49:03,046 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [70618590] [2022-12-14 04:49:03,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 04:49:03,046 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 04:49:03,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 04:49:03,109 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2022-12-14 04:49:03,109 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 04:49:03,109 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [70618590] [2022-12-14 04:49:03,109 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [70618590] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 04:49:03,109 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 04:49:03,110 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 04:49:03,110 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [437337240] [2022-12-14 04:49:03,110 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 04:49:03,110 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 04:49:03,110 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 04:49:03,111 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 04:49:03,111 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 04:49:03,111 INFO L87 Difference]: Start difference. First operand 455 states and 616 transitions. Second operand has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 2 states have call successors, (29), 2 states have call predecessors, (29), 1 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) [2022-12-14 04:49:03,295 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 04:49:03,295 INFO L93 Difference]: Finished difference Result 855 states and 1166 transitions. [2022-12-14 04:49:03,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 04:49:03,296 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 2 states have call successors, (29), 2 states have call predecessors, (29), 1 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) Word has length 135 [2022-12-14 04:49:03,296 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 04:49:03,299 INFO L225 Difference]: With dead ends: 855 [2022-12-14 04:49:03,299 INFO L226 Difference]: Without dead ends: 452 [2022-12-14 04:49:03,300 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 [2022-12-14 04:49:03,301 INFO L413 NwaCegarLoop]: 421 mSDtfsCounter, 449 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 68 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 449 SdHoareTripleChecker+Valid, 448 SdHoareTripleChecker+Invalid, 78 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 68 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 04:49:03,301 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [449 Valid, 448 Invalid, 78 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 68 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 04:49:03,302 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 452 states. [2022-12-14 04:49:03,363 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 452 to 452. [2022-12-14 04:49:03,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 452 states, 281 states have (on average 1.2562277580071175) internal successors, (353), 293 states have internal predecessors, (353), 120 states have call successors, (120), 50 states have call predecessors, (120), 50 states have return successors, (119), 118 states have call predecessors, (119), 119 states have call successors, (119) [2022-12-14 04:49:03,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 452 states to 452 states and 592 transitions. [2022-12-14 04:49:03,366 INFO L78 Accepts]: Start accepts. Automaton has 452 states and 592 transitions. Word has length 135 [2022-12-14 04:49:03,366 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 04:49:03,366 INFO L495 AbstractCegarLoop]: Abstraction has 452 states and 592 transitions. [2022-12-14 04:49:03,367 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 2 states have call successors, (29), 2 states have call predecessors, (29), 1 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) [2022-12-14 04:49:03,367 INFO L276 IsEmpty]: Start isEmpty. Operand 452 states and 592 transitions. [2022-12-14 04:49:03,369 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2022-12-14 04:49:03,369 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 04:49:03,369 INFO L195 NwaCegarLoop]: trace histogram [8, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 04:49:03,370 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-12-14 04:49:03,370 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 04:49:03,370 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 04:49:03,370 INFO L85 PathProgramCache]: Analyzing trace with hash 207904857, now seen corresponding path program 1 times [2022-12-14 04:49:03,370 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 04:49:03,370 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [754629157] [2022-12-14 04:49:03,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 04:49:03,370 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 04:49:03,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 04:49:03,484 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2022-12-14 04:49:03,484 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 04:49:03,484 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [754629157] [2022-12-14 04:49:03,484 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [754629157] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 04:49:03,484 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [417410957] [2022-12-14 04:49:03,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 04:49:03,485 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 04:49:03,485 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94db1127-ea7d-45fe-9967-2c6d081f9d52/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 04:49:03,486 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94db1127-ea7d-45fe-9967-2c6d081f9d52/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 04:49:03,486 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94db1127-ea7d-45fe-9967-2c6d081f9d52/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-12-14 04:49:03,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 04:49:03,717 INFO L263 TraceCheckSpWp]: Trace formula consists of 1485 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-14 04:49:03,721 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 04:49:03,766 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2022-12-14 04:49:03,766 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 04:49:03,766 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [417410957] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 04:49:03,766 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-14 04:49:03,766 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2022-12-14 04:49:03,767 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [860554460] [2022-12-14 04:49:03,767 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 04:49:03,767 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 04:49:03,767 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 04:49:03,767 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 04:49:03,767 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-12-14 04:49:03,768 INFO L87 Difference]: Start difference. First operand 452 states and 592 transitions. Second operand has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 3 states have call successors, (32), 3 states have call predecessors, (32), 3 states have return successors, (27), 3 states have call predecessors, (27), 3 states have call successors, (27) [2022-12-14 04:49:03,978 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 04:49:03,978 INFO L93 Difference]: Finished difference Result 1258 states and 1695 transitions. [2022-12-14 04:49:03,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 04:49:03,978 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 3 states have call successors, (32), 3 states have call predecessors, (32), 3 states have return successors, (27), 3 states have call predecessors, (27), 3 states have call successors, (27) Word has length 147 [2022-12-14 04:49:03,979 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 04:49:03,983 INFO L225 Difference]: With dead ends: 1258 [2022-12-14 04:49:03,983 INFO L226 Difference]: Without dead ends: 851 [2022-12-14 04:49:03,985 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 147 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-12-14 04:49:03,985 INFO L413 NwaCegarLoop]: 547 mSDtfsCounter, 398 mSDsluCounter, 407 mSDsCounter, 0 mSdLazyCounter, 116 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 398 SdHoareTripleChecker+Valid, 954 SdHoareTripleChecker+Invalid, 123 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 116 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 04:49:03,986 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [398 Valid, 954 Invalid, 123 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 116 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 04:49:03,987 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 851 states. [2022-12-14 04:49:04,124 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 851 to 849. [2022-12-14 04:49:04,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 849 states, 531 states have (on average 1.2598870056497176) internal successors, (669), 551 states have internal predecessors, (669), 225 states have call successors, (225), 92 states have call predecessors, (225), 92 states have return successors, (237), 222 states have call predecessors, (237), 223 states have call successors, (237) [2022-12-14 04:49:04,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 849 states to 849 states and 1131 transitions. [2022-12-14 04:49:04,131 INFO L78 Accepts]: Start accepts. Automaton has 849 states and 1131 transitions. Word has length 147 [2022-12-14 04:49:04,131 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 04:49:04,131 INFO L495 AbstractCegarLoop]: Abstraction has 849 states and 1131 transitions. [2022-12-14 04:49:04,132 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 3 states have call successors, (32), 3 states have call predecessors, (32), 3 states have return successors, (27), 3 states have call predecessors, (27), 3 states have call successors, (27) [2022-12-14 04:49:04,132 INFO L276 IsEmpty]: Start isEmpty. Operand 849 states and 1131 transitions. [2022-12-14 04:49:04,135 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2022-12-14 04:49:04,135 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 04:49:04,135 INFO L195 NwaCegarLoop]: trace histogram [8, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 04:49:04,143 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94db1127-ea7d-45fe-9967-2c6d081f9d52/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-12-14 04:49:04,336 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94db1127-ea7d-45fe-9967-2c6d081f9d52/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 04:49:04,336 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 04:49:04,337 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 04:49:04,337 INFO L85 PathProgramCache]: Analyzing trace with hash 306563230, now seen corresponding path program 1 times [2022-12-14 04:49:04,337 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 04:49:04,337 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [203421482] [2022-12-14 04:49:04,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 04:49:04,337 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 04:49:04,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 04:49:04,509 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2022-12-14 04:49:04,510 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 04:49:04,510 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [203421482] [2022-12-14 04:49:04,510 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [203421482] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 04:49:04,510 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1855621832] [2022-12-14 04:49:04,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 04:49:04,510 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 04:49:04,510 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94db1127-ea7d-45fe-9967-2c6d081f9d52/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 04:49:04,511 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94db1127-ea7d-45fe-9967-2c6d081f9d52/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 04:49:04,512 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94db1127-ea7d-45fe-9967-2c6d081f9d52/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-12-14 04:49:04,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 04:49:04,714 INFO L263 TraceCheckSpWp]: Trace formula consists of 1487 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-14 04:49:04,717 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 04:49:04,727 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2022-12-14 04:49:04,728 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 04:49:04,776 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2022-12-14 04:49:04,776 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1855621832] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 04:49:04,776 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [178234903] [2022-12-14 04:49:04,779 INFO L159 IcfgInterpreter]: Started Sifa with 121 locations of interest [2022-12-14 04:49:04,779 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 04:49:04,780 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 04:49:04,780 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 04:49:04,780 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 04:49:15,983 INFO L197 IcfgInterpreter]: Interpreting procedure select_one with input of size 463 for LOIs [2022-12-14 04:49:16,261 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 04:49:51,647 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [178234903] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 04:49:51,647 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-12-14 04:49:51,647 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [4, 4, 4] total 32 [2022-12-14 04:49:51,647 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [454645595] [2022-12-14 04:49:51,647 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 04:49:51,647 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-12-14 04:49:51,647 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 04:49:51,648 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-12-14 04:49:51,648 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=161, Invalid=831, Unknown=0, NotChecked=0, Total=992 [2022-12-14 04:49:51,648 INFO L87 Difference]: Start difference. First operand 849 states and 1131 transitions. Second operand has 27 states, 18 states have (on average 4.166666666666667) internal successors, (75), 17 states have internal predecessors, (75), 9 states have call successors, (32), 2 states have call predecessors, (32), 2 states have return successors, (27), 9 states have call predecessors, (27), 9 states have call successors, (27) [2022-12-14 04:50:28,096 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 04:50:28,097 INFO L93 Difference]: Finished difference Result 1651 states and 2209 transitions. [2022-12-14 04:50:28,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2022-12-14 04:50:28,097 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 18 states have (on average 4.166666666666667) internal successors, (75), 17 states have internal predecessors, (75), 9 states have call successors, (32), 2 states have call predecessors, (32), 2 states have return successors, (27), 9 states have call predecessors, (27), 9 states have call successors, (27) Word has length 148 [2022-12-14 04:50:28,098 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 04:50:28,100 INFO L225 Difference]: With dead ends: 1651 [2022-12-14 04:50:28,100 INFO L226 Difference]: Without dead ends: 848 [2022-12-14 04:50:28,102 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 454 GetRequests, 416 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 564 ImplicationChecksByTransitivity, 69.4s TimeCoverageRelationStatistics Valid=239, Invalid=1321, Unknown=0, NotChecked=0, Total=1560 [2022-12-14 04:50:28,102 INFO L413 NwaCegarLoop]: 410 mSDtfsCounter, 56 mSDsluCounter, 1068 mSDsCounter, 0 mSdLazyCounter, 652 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 1478 SdHoareTripleChecker+Invalid, 660 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 652 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-12-14 04:50:28,103 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [56 Valid, 1478 Invalid, 660 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 652 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2022-12-14 04:50:28,103 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 848 states. [2022-12-14 04:50:28,183 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 848 to 848. [2022-12-14 04:50:28,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 848 states, 530 states have (on average 1.2547169811320755) internal successors, (665), 550 states have internal predecessors, (665), 225 states have call successors, (225), 92 states have call predecessors, (225), 92 states have return successors, (237), 222 states have call predecessors, (237), 223 states have call successors, (237) [2022-12-14 04:50:28,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 848 states to 848 states and 1127 transitions. [2022-12-14 04:50:28,187 INFO L78 Accepts]: Start accepts. Automaton has 848 states and 1127 transitions. Word has length 148 [2022-12-14 04:50:28,187 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 04:50:28,187 INFO L495 AbstractCegarLoop]: Abstraction has 848 states and 1127 transitions. [2022-12-14 04:50:28,187 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 18 states have (on average 4.166666666666667) internal successors, (75), 17 states have internal predecessors, (75), 9 states have call successors, (32), 2 states have call predecessors, (32), 2 states have return successors, (27), 9 states have call predecessors, (27), 9 states have call successors, (27) [2022-12-14 04:50:28,187 INFO L276 IsEmpty]: Start isEmpty. Operand 848 states and 1127 transitions. [2022-12-14 04:50:28,189 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2022-12-14 04:50:28,189 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 04:50:28,189 INFO L195 NwaCegarLoop]: trace histogram [8, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 04:50:28,196 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94db1127-ea7d-45fe-9967-2c6d081f9d52/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2022-12-14 04:50:28,389 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94db1127-ea7d-45fe-9967-2c6d081f9d52/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 04:50:28,391 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 04:50:28,391 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 04:50:28,392 INFO L85 PathProgramCache]: Analyzing trace with hash 684422579, now seen corresponding path program 1 times [2022-12-14 04:50:28,392 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 04:50:28,392 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [679369877] [2022-12-14 04:50:28,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 04:50:28,393 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 04:50:28,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 04:50:28,512 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2022-12-14 04:50:28,512 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 04:50:28,512 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [679369877] [2022-12-14 04:50:28,512 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [679369877] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 04:50:28,512 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1620151792] [2022-12-14 04:50:28,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 04:50:28,513 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 04:50:28,513 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94db1127-ea7d-45fe-9967-2c6d081f9d52/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 04:50:28,514 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94db1127-ea7d-45fe-9967-2c6d081f9d52/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 04:50:28,514 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94db1127-ea7d-45fe-9967-2c6d081f9d52/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-12-14 04:50:28,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 04:50:28,762 INFO L263 TraceCheckSpWp]: Trace formula consists of 1487 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-14 04:50:28,764 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 04:50:28,778 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2022-12-14 04:50:28,778 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 04:50:28,836 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2022-12-14 04:50:28,836 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1620151792] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 04:50:28,836 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2018688199] [2022-12-14 04:50:28,840 INFO L159 IcfgInterpreter]: Started Sifa with 122 locations of interest [2022-12-14 04:50:28,840 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 04:50:28,840 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 04:50:28,840 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 04:50:28,841 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 04:52:14,904 INFO L197 IcfgInterpreter]: Interpreting procedure setup_rjh__before__Keys with input of size 511 for LOIs [2022-12-14 04:52:15,959 INFO L197 IcfgInterpreter]: Interpreting procedure setup_bob__before__Keys with input of size 517 for LOIs [2022-12-14 04:52:17,339 INFO L197 IcfgInterpreter]: Interpreting procedure sendEmail with input of size 477 for LOIs [2022-12-14 04:52:50,468 INFO L197 IcfgInterpreter]: Interpreting procedure select_one with input of size 463 for LOIs [2022-12-14 04:52:50,748 INFO L197 IcfgInterpreter]: Interpreting procedure setup_chuck__before__Keys with input of size 452 for LOIs [2022-12-14 04:52:52,936 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 441 for LOIs [2022-12-14 04:52:53,199 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailTo with input of size 445 for LOIs [2022-12-14 04:52:53,537 INFO L197 IcfgInterpreter]: Interpreting procedure setClientPrivateKey with input of size 445 for LOIs [2022-12-14 04:52:53,862 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing with input of size 475 for LOIs [2022-12-14 04:52:54,675 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing__before__Sign with input of size 465 for LOIs [2022-12-14 04:52:55,464 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing__before__AddressBook with input of size 463 for LOIs [2022-12-14 04:53:03,848 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing__before__Encrypt with input of size 454 for LOIs [2022-12-14 04:53:11,223 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailFrom with input of size 445 for LOIs [2022-12-14 04:53:11,777 INFO L197 IcfgInterpreter]: Interpreting procedure isEncrypted with input of size 254 for LOIs [2022-12-14 04:53:11,817 INFO L197 IcfgInterpreter]: Interpreting procedure findPublicKey with input of size 252 for LOIs [2022-12-14 04:53:11,886 INFO L197 IcfgInterpreter]: Interpreting procedure getEmailTo with input of size 432 for LOIs [2022-12-14 04:53:12,111 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 04:54:14,276 WARN L233 SmtUtils]: Spent 5.01s on a formula simplification. DAG size of input: 751 DAG size of output: 526 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 04:54:28,352 WARN L233 SmtUtils]: Spent 7.81s on a formula simplification. DAG size of input: 740 DAG size of output: 592 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 04:54:35,740 WARN L233 SmtUtils]: Spent 6.68s on a formula simplification. DAG size of input: 746 DAG size of output: 569 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 04:54:42,104 WARN L233 SmtUtils]: Spent 5.97s on a formula simplification. DAG size of input: 750 DAG size of output: 535 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 04:57:01,901 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [2018688199] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 04:57:01,901 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-12-14 04:57:01,901 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [91] imperfect sequences [4, 4, 4] total 97 [2022-12-14 04:57:01,901 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2122524184] [2022-12-14 04:57:01,901 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 04:57:01,902 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 92 states [2022-12-14 04:57:01,902 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 04:57:01,903 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 92 interpolants. [2022-12-14 04:57:01,905 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=335, Invalid=8977, Unknown=0, NotChecked=0, Total=9312 [2022-12-14 04:57:01,905 INFO L87 Difference]: Start difference. First operand 848 states and 1127 transitions. Second operand has 92 states, 60 states have (on average 1.2666666666666666) internal successors, (76), 59 states have internal predecessors, (76), 28 states have call successors, (32), 17 states have call predecessors, (32), 12 states have return successors, (27), 25 states have call predecessors, (27), 23 states have call successors, (27) [2022-12-14 04:59:30,072 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 04:59:30,073 INFO L93 Difference]: Finished difference Result 1693 states and 2375 transitions. [2022-12-14 04:59:30,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 100 states. [2022-12-14 04:59:30,073 INFO L78 Accepts]: Start accepts. Automaton has has 92 states, 60 states have (on average 1.2666666666666666) internal successors, (76), 59 states have internal predecessors, (76), 28 states have call successors, (32), 17 states have call predecessors, (32), 12 states have return successors, (27), 25 states have call predecessors, (27), 23 states have call successors, (27) Word has length 149 [2022-12-14 04:59:30,074 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 04:59:30,077 INFO L225 Difference]: With dead ends: 1693 [2022-12-14 04:59:30,077 INFO L226 Difference]: Without dead ends: 1121 [2022-12-14 04:59:30,080 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 469 GetRequests, 348 SyntacticMatches, 6 SemanticMatches, 115 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5155 ImplicationChecksByTransitivity, 289.1s TimeCoverageRelationStatistics Valid=517, Invalid=13055, Unknown=0, NotChecked=0, Total=13572 [2022-12-14 04:59:30,081 INFO L413 NwaCegarLoop]: 581 mSDtfsCounter, 410 mSDsluCounter, 16946 mSDsCounter, 0 mSdLazyCounter, 26381 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 82.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 418 SdHoareTripleChecker+Valid, 17527 SdHoareTripleChecker+Invalid, 26424 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.4s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 26381 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 87.6s IncrementalHoareTripleChecker+Time [2022-12-14 04:59:30,081 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [418 Valid, 17527 Invalid, 26424 Unknown, 0 Unchecked, 0.4s Time], IncrementalHoareTripleChecker [43 Valid, 26381 Invalid, 0 Unknown, 0 Unchecked, 87.6s Time] [2022-12-14 04:59:30,082 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1121 states. [2022-12-14 04:59:30,358 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1121 to 954. [2022-12-14 04:59:30,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 954 states, 618 states have (on average 1.2912621359223302) internal successors, (798), 638 states have internal predecessors, (798), 237 states have call successors, (237), 103 states have call predecessors, (237), 98 states have return successors, (254), 229 states have call predecessors, (254), 235 states have call successors, (254) [2022-12-14 04:59:30,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 954 states to 954 states and 1289 transitions. [2022-12-14 04:59:30,362 INFO L78 Accepts]: Start accepts. Automaton has 954 states and 1289 transitions. Word has length 149 [2022-12-14 04:59:30,362 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 04:59:30,362 INFO L495 AbstractCegarLoop]: Abstraction has 954 states and 1289 transitions. [2022-12-14 04:59:30,362 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 92 states, 60 states have (on average 1.2666666666666666) internal successors, (76), 59 states have internal predecessors, (76), 28 states have call successors, (32), 17 states have call predecessors, (32), 12 states have return successors, (27), 25 states have call predecessors, (27), 23 states have call successors, (27) [2022-12-14 04:59:30,362 INFO L276 IsEmpty]: Start isEmpty. Operand 954 states and 1289 transitions. [2022-12-14 04:59:30,364 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2022-12-14 04:59:30,364 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 04:59:30,364 INFO L195 NwaCegarLoop]: trace histogram [8, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 04:59:30,372 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94db1127-ea7d-45fe-9967-2c6d081f9d52/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-12-14 04:59:30,565 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94db1127-ea7d-45fe-9967-2c6d081f9d52/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-12-14 04:59:30,565 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 04:59:30,565 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 04:59:30,566 INFO L85 PathProgramCache]: Analyzing trace with hash 1558385400, now seen corresponding path program 1 times [2022-12-14 04:59:30,566 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 04:59:30,566 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1781993218] [2022-12-14 04:59:30,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 04:59:30,566 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 04:59:30,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 04:59:30,657 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2022-12-14 04:59:30,657 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 04:59:30,657 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1781993218] [2022-12-14 04:59:30,657 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1781993218] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 04:59:30,657 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [92622866] [2022-12-14 04:59:30,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 04:59:30,657 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 04:59:30,657 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94db1127-ea7d-45fe-9967-2c6d081f9d52/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 04:59:30,658 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94db1127-ea7d-45fe-9967-2c6d081f9d52/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 04:59:30,659 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94db1127-ea7d-45fe-9967-2c6d081f9d52/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-12-14 04:59:30,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 04:59:30,931 INFO L263 TraceCheckSpWp]: Trace formula consists of 1516 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-14 04:59:30,934 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 04:59:30,948 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2022-12-14 04:59:30,948 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 04:59:31,015 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2022-12-14 04:59:31,015 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [92622866] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 04:59:31,015 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1067427250] [2022-12-14 04:59:31,019 INFO L159 IcfgInterpreter]: Started Sifa with 122 locations of interest [2022-12-14 04:59:31,019 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 04:59:31,019 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 04:59:31,019 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 04:59:31,020 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 04:59:42,002 INFO L197 IcfgInterpreter]: Interpreting procedure select_one with input of size 463 for LOIs [2022-12-14 04:59:42,282 INFO L180 IcfgInterpreter]: Interpretation finished