./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/email_spec0_product27.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 4e7fbc69 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68bde73e-aa54-49fd-b30f-908fba3c78f4/bin/utaipan-Q6hlc19bkW/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68bde73e-aa54-49fd-b30f-908fba3c78f4/bin/utaipan-Q6hlc19bkW/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68bde73e-aa54-49fd-b30f-908fba3c78f4/bin/utaipan-Q6hlc19bkW/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68bde73e-aa54-49fd-b30f-908fba3c78f4/bin/utaipan-Q6hlc19bkW/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/email_spec0_product27.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68bde73e-aa54-49fd-b30f-908fba3c78f4/bin/utaipan-Q6hlc19bkW/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68bde73e-aa54-49fd-b30f-908fba3c78f4/bin/utaipan-Q6hlc19bkW --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 d732923830fb3a71ab6990fcf85b09499ea996afd0bf98e12e19d094dda2a9f7 --- 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-4e7fbc6 [2022-11-23 15:04:28,935 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-23 15:04:28,938 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-23 15:04:28,980 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-23 15:04:28,981 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-23 15:04:28,982 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-23 15:04:28,983 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-23 15:04:28,985 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-23 15:04:28,991 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-23 15:04:28,997 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-23 15:04:28,998 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-23 15:04:28,999 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-23 15:04:29,000 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-23 15:04:29,001 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-23 15:04:29,002 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-23 15:04:29,004 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-23 15:04:29,004 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-23 15:04:29,005 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-23 15:04:29,007 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-23 15:04:29,009 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-23 15:04:29,011 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-23 15:04:29,013 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-23 15:04:29,014 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-23 15:04:29,015 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-23 15:04:29,022 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-23 15:04:29,029 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-23 15:04:29,029 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-23 15:04:29,031 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-23 15:04:29,032 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-23 15:04:29,033 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-23 15:04:29,035 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-23 15:04:29,036 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-23 15:04:29,038 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-23 15:04:29,040 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-23 15:04:29,041 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-23 15:04:29,042 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-23 15:04:29,043 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-23 15:04:29,044 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-23 15:04:29,044 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-23 15:04:29,046 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-23 15:04:29,047 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-23 15:04:29,048 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68bde73e-aa54-49fd-b30f-908fba3c78f4/bin/utaipan-Q6hlc19bkW/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-11-23 15:04:29,084 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-23 15:04:29,085 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-23 15:04:29,085 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-23 15:04:29,086 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-23 15:04:29,087 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-23 15:04:29,087 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-23 15:04:29,087 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-23 15:04:29,087 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-23 15:04:29,088 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-23 15:04:29,088 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-23 15:04:29,089 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-23 15:04:29,089 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-23 15:04:29,089 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-23 15:04:29,090 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-23 15:04:29,090 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-23 15:04:29,090 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-23 15:04:29,090 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-23 15:04:29,090 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-23 15:04:29,092 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-23 15:04:29,092 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-23 15:04:29,092 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-23 15:04:29,092 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-23 15:04:29,093 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-23 15:04:29,093 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-23 15:04:29,093 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-23 15:04:29,093 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-23 15:04:29,094 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-23 15:04:29,094 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-23 15:04:29,094 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-23 15:04:29,095 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-23 15:04:29,095 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-23 15:04:29,095 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-23 15:04:29,096 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 15:04:29,096 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-23 15:04:29,096 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-23 15:04:29,096 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-23 15:04:29,096 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-23 15:04:29,097 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-23 15:04:29,097 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-23 15:04:29,097 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-23 15:04:29,097 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-23 15:04:29,097 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_68bde73e-aa54-49fd-b30f-908fba3c78f4/bin/utaipan-Q6hlc19bkW/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68bde73e-aa54-49fd-b30f-908fba3c78f4/bin/utaipan-Q6hlc19bkW Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d732923830fb3a71ab6990fcf85b09499ea996afd0bf98e12e19d094dda2a9f7 [2022-11-23 15:04:29,400 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-23 15:04:29,441 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-23 15:04:29,444 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-23 15:04:29,446 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-23 15:04:29,446 INFO L275 PluginConnector]: CDTParser initialized [2022-11-23 15:04:29,448 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68bde73e-aa54-49fd-b30f-908fba3c78f4/bin/utaipan-Q6hlc19bkW/../../sv-benchmarks/c/product-lines/email_spec0_product27.cil.c [2022-11-23 15:04:32,478 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-23 15:04:32,868 INFO L351 CDTParser]: Found 1 translation units. [2022-11-23 15:04:32,869 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68bde73e-aa54-49fd-b30f-908fba3c78f4/sv-benchmarks/c/product-lines/email_spec0_product27.cil.c [2022-11-23 15:04:32,910 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68bde73e-aa54-49fd-b30f-908fba3c78f4/bin/utaipan-Q6hlc19bkW/data/8b7294856/aae0adaa5898496da2046118d7d66d9d/FLAGde6c1d88b [2022-11-23 15:04:32,937 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68bde73e-aa54-49fd-b30f-908fba3c78f4/bin/utaipan-Q6hlc19bkW/data/8b7294856/aae0adaa5898496da2046118d7d66d9d [2022-11-23 15:04:32,939 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-23 15:04:32,941 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-23 15:04:32,945 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-23 15:04:32,945 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-23 15:04:32,949 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-23 15:04:32,950 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 03:04:32" (1/1) ... [2022-11-23 15:04:32,951 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3dd43259 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:04:32, skipping insertion in model container [2022-11-23 15:04:32,951 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 03:04:32" (1/1) ... [2022-11-23 15:04:32,960 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-23 15:04:33,033 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-23 15:04:33,486 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_68bde73e-aa54-49fd-b30f-908fba3c78f4/sv-benchmarks/c/product-lines/email_spec0_product27.cil.c[28349,28362] [2022-11-23 15:04:33,603 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 15:04:33,617 INFO L203 MainTranslator]: Completed pre-run [2022-11-23 15:04:33,689 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_68bde73e-aa54-49fd-b30f-908fba3c78f4/sv-benchmarks/c/product-lines/email_spec0_product27.cil.c[28349,28362] [2022-11-23 15:04:33,751 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 15:04:33,783 INFO L208 MainTranslator]: Completed translation [2022-11-23 15:04:33,784 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:04:33 WrapperNode [2022-11-23 15:04:33,784 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-23 15:04:33,785 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-23 15:04:33,785 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-23 15:04:33,785 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-23 15:04:33,793 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:04:33" (1/1) ... [2022-11-23 15:04:33,819 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:04:33" (1/1) ... [2022-11-23 15:04:33,906 INFO L138 Inliner]: procedures = 133, calls = 227, calls flagged for inlining = 65, calls inlined = 62, statements flattened = 1124 [2022-11-23 15:04:33,906 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-23 15:04:33,907 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-23 15:04:33,907 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-23 15:04:33,907 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-23 15:04:33,916 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:04:33" (1/1) ... [2022-11-23 15:04:33,917 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:04:33" (1/1) ... [2022-11-23 15:04:33,924 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:04:33" (1/1) ... [2022-11-23 15:04:33,924 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:04:33" (1/1) ... [2022-11-23 15:04:33,942 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:04:33" (1/1) ... [2022-11-23 15:04:33,951 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:04:33" (1/1) ... [2022-11-23 15:04:33,955 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:04:33" (1/1) ... [2022-11-23 15:04:33,959 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:04:33" (1/1) ... [2022-11-23 15:04:33,966 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-23 15:04:33,967 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-23 15:04:33,967 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-23 15:04:33,968 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-23 15:04:33,968 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:04:33" (1/1) ... [2022-11-23 15:04:33,994 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 15:04:34,005 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68bde73e-aa54-49fd-b30f-908fba3c78f4/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 15:04:34,032 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68bde73e-aa54-49fd-b30f-908fba3c78f4/bin/utaipan-Q6hlc19bkW/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-23 15:04:34,066 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68bde73e-aa54-49fd-b30f-908fba3c78f4/bin/utaipan-Q6hlc19bkW/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-23 15:04:34,088 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookSize [2022-11-23 15:04:34,088 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookSize [2022-11-23 15:04:34,089 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookAddress [2022-11-23 15:04:34,089 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookAddress [2022-11-23 15:04:34,089 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2022-11-23 15:04:34,089 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2022-11-23 15:04:34,089 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing__wrappee__AutoResponder [2022-11-23 15:04:34,090 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing__wrappee__AutoResponder [2022-11-23 15:04:34,090 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2022-11-23 15:04:34,090 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2022-11-23 15:04:34,090 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable [2022-11-23 15:04:34,090 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable [2022-11-23 15:04:34,090 INFO L130 BoogieDeclarations]: Found specification of procedure createClientKeyringEntry [2022-11-23 15:04:34,091 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientKeyringEntry [2022-11-23 15:04:34,091 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSignKey [2022-11-23 15:04:34,091 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSignKey [2022-11-23 15:04:34,091 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAdd [2022-11-23 15:04:34,091 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAdd [2022-11-23 15:04:34,092 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2022-11-23 15:04:34,092 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailFrom [2022-11-23 15:04:34,092 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailFrom [2022-11-23 15:04:34,092 INFO L130 BoogieDeclarations]: Found specification of procedure queue [2022-11-23 15:04:34,093 INFO L138 BoogieDeclarations]: Found implementation of procedure queue [2022-11-23 15:04:34,093 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2022-11-23 15:04:34,094 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2022-11-23 15:04:34,094 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-23 15:04:34,094 INFO L130 BoogieDeclarations]: Found specification of procedure isSigned [2022-11-23 15:04:34,095 INFO L138 BoogieDeclarations]: Found implementation of procedure isSigned [2022-11-23 15:04:34,095 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookSize [2022-11-23 15:04:34,095 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookSize [2022-11-23 15:04:34,097 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringUser [2022-11-23 15:04:34,097 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringUser [2022-11-23 15:04:34,097 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringPublicKey [2022-11-23 15:04:34,097 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringPublicKey [2022-11-23 15:04:34,098 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2022-11-23 15:04:34,098 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2022-11-23 15:04:34,098 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2022-11-23 15:04:34,098 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2022-11-23 15:04:34,098 INFO L130 BoogieDeclarations]: Found specification of procedure setClientPrivateKey [2022-11-23 15:04:34,099 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientPrivateKey [2022-11-23 15:04:34,099 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailTo [2022-11-23 15:04:34,099 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailTo [2022-11-23 15:04:34,099 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-23 15:04:34,100 INFO L130 BoogieDeclarations]: Found specification of procedure generateKeyPair [2022-11-23 15:04:34,100 INFO L138 BoogieDeclarations]: Found implementation of procedure generateKeyPair [2022-11-23 15:04:34,100 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookAddress [2022-11-23 15:04:34,101 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookAddress [2022-11-23 15:04:34,101 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-23 15:04:34,101 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-23 15:04:34,419 INFO L235 CfgBuilder]: Building ICFG [2022-11-23 15:04:34,424 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-23 15:04:35,581 INFO L276 CfgBuilder]: Performing block encoding [2022-11-23 15:04:36,200 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-23 15:04:36,201 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-23 15:04:36,205 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 03:04:36 BoogieIcfgContainer [2022-11-23 15:04:36,205 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-23 15:04:36,209 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-23 15:04:36,209 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-23 15:04:36,213 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-23 15:04:36,213 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 03:04:32" (1/3) ... [2022-11-23 15:04:36,215 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e5cc7d1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 03:04:36, skipping insertion in model container [2022-11-23 15:04:36,215 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:04:33" (2/3) ... [2022-11-23 15:04:36,216 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e5cc7d1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 03:04:36, skipping insertion in model container [2022-11-23 15:04:36,217 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 03:04:36" (3/3) ... [2022-11-23 15:04:36,221 INFO L112 eAbstractionObserver]: Analyzing ICFG email_spec0_product27.cil.c [2022-11-23 15:04:36,244 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-23 15:04:36,244 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-23 15:04:36,306 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-23 15:04:36,315 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;@6e438378, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-23 15:04:36,316 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-23 15:04:36,322 INFO L276 IsEmpty]: Start isEmpty. Operand has 191 states, 109 states have (on average 1.311926605504587) internal successors, (143), 112 states have internal predecessors, (143), 58 states have call successors, (58), 22 states have call predecessors, (58), 22 states have return successors, (58), 57 states have call predecessors, (58), 58 states have call successors, (58) [2022-11-23 15:04:36,348 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2022-11-23 15:04:36,349 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:04:36,350 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 15:04:36,351 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 15:04:36,358 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:04:36,359 INFO L85 PathProgramCache]: Analyzing trace with hash 1016220549, now seen corresponding path program 1 times [2022-11-23 15:04:36,370 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:04:36,370 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [69523954] [2022-11-23 15:04:36,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:04:36,371 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:04:36,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:04:36,803 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-23 15:04:36,804 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:04:36,804 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [69523954] [2022-11-23 15:04:36,805 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [69523954] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:04:36,805 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 15:04:36,805 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-23 15:04:36,807 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1240820831] [2022-11-23 15:04:36,808 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:04:36,814 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-23 15:04:36,816 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:04:36,859 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-23 15:04:36,860 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-23 15:04:36,864 INFO L87 Difference]: Start difference. First operand has 191 states, 109 states have (on average 1.311926605504587) internal successors, (143), 112 states have internal predecessors, (143), 58 states have call successors, (58), 22 states have call predecessors, (58), 22 states have return successors, (58), 57 states have call predecessors, (58), 58 states have call successors, (58) Second operand has 2 states, 2 states have (on average 17.5) internal successors, (35), 2 states have internal predecessors, (35), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-11-23 15:04:37,050 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:04:37,051 INFO L93 Difference]: Finished difference Result 290 states and 389 transitions. [2022-11-23 15:04:37,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-23 15:04:37,057 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 17.5) internal successors, (35), 2 states have internal predecessors, (35), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 73 [2022-11-23 15:04:37,058 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:04:37,069 INFO L225 Difference]: With dead ends: 290 [2022-11-23 15:04:37,071 INFO L226 Difference]: Without dead ends: 188 [2022-11-23 15:04:37,080 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-23 15:04:37,084 INFO L413 NwaCegarLoop]: 216 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 216 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-23 15:04:37,086 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 216 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-23 15:04:37,104 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 188 states. [2022-11-23 15:04:37,184 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 188 to 188. [2022-11-23 15:04:37,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 188 states, 107 states have (on average 1.280373831775701) internal successors, (137), 109 states have internal predecessors, (137), 58 states have call successors, (58), 22 states have call predecessors, (58), 22 states have return successors, (57), 56 states have call predecessors, (57), 57 states have call successors, (57) [2022-11-23 15:04:37,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 188 states to 188 states and 252 transitions. [2022-11-23 15:04:37,191 INFO L78 Accepts]: Start accepts. Automaton has 188 states and 252 transitions. Word has length 73 [2022-11-23 15:04:37,193 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:04:37,193 INFO L495 AbstractCegarLoop]: Abstraction has 188 states and 252 transitions. [2022-11-23 15:04:37,193 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 17.5) internal successors, (35), 2 states have internal predecessors, (35), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-11-23 15:04:37,194 INFO L276 IsEmpty]: Start isEmpty. Operand 188 states and 252 transitions. [2022-11-23 15:04:37,199 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-11-23 15:04:37,200 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:04:37,200 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 15:04:37,200 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-23 15:04:37,201 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 15:04:37,201 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:04:37,202 INFO L85 PathProgramCache]: Analyzing trace with hash 167171433, now seen corresponding path program 1 times [2022-11-23 15:04:37,202 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:04:37,202 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1377963035] [2022-11-23 15:04:37,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:04:37,203 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:04:37,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:04:37,557 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-23 15:04:37,557 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:04:37,558 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1377963035] [2022-11-23 15:04:37,558 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1377963035] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:04:37,558 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 15:04:37,558 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 15:04:37,559 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1422776693] [2022-11-23 15:04:37,559 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:04:37,561 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 15:04:37,561 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:04:37,562 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 15:04:37,562 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 15:04:37,562 INFO L87 Difference]: Start difference. First operand 188 states and 252 transitions. Second operand has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-11-23 15:04:37,788 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:04:37,788 INFO L93 Difference]: Finished difference Result 286 states and 374 transitions. [2022-11-23 15:04:37,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 15:04:37,789 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 74 [2022-11-23 15:04:37,790 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:04:37,798 INFO L225 Difference]: With dead ends: 286 [2022-11-23 15:04:37,799 INFO L226 Difference]: Without dead ends: 190 [2022-11-23 15:04:37,806 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 15:04:37,808 INFO L413 NwaCegarLoop]: 213 mSDtfsCounter, 0 mSDsluCounter, 212 mSDsCounter, 0 mSdLazyCounter, 78 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 425 SdHoareTripleChecker+Invalid, 78 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 78 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-23 15:04:37,811 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 425 Invalid, 78 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 78 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-23 15:04:37,812 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 190 states. [2022-11-23 15:04:37,842 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 190 to 190. [2022-11-23 15:04:37,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 190 states, 109 states have (on average 1.275229357798165) internal successors, (139), 111 states have internal predecessors, (139), 58 states have call successors, (58), 22 states have call predecessors, (58), 22 states have return successors, (57), 56 states have call predecessors, (57), 57 states have call successors, (57) [2022-11-23 15:04:37,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 190 states to 190 states and 254 transitions. [2022-11-23 15:04:37,851 INFO L78 Accepts]: Start accepts. Automaton has 190 states and 254 transitions. Word has length 74 [2022-11-23 15:04:37,852 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:04:37,852 INFO L495 AbstractCegarLoop]: Abstraction has 190 states and 254 transitions. [2022-11-23 15:04:37,852 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-11-23 15:04:37,853 INFO L276 IsEmpty]: Start isEmpty. Operand 190 states and 254 transitions. [2022-11-23 15:04:37,861 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-11-23 15:04:37,861 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:04:37,862 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 15:04:37,862 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-23 15:04:37,863 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 15:04:37,863 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:04:37,863 INFO L85 PathProgramCache]: Analyzing trace with hash 734482645, now seen corresponding path program 1 times [2022-11-23 15:04:37,864 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:04:37,864 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2089473827] [2022-11-23 15:04:37,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:04:37,864 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:04:37,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:04:38,056 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-23 15:04:38,058 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:04:38,058 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2089473827] [2022-11-23 15:04:38,058 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2089473827] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:04:38,059 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 15:04:38,059 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 15:04:38,060 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1222113976] [2022-11-23 15:04:38,060 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:04:38,061 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 15:04:38,061 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:04:38,062 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 15:04:38,063 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 15:04:38,064 INFO L87 Difference]: Start difference. First operand 190 states and 254 transitions. Second operand has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-11-23 15:04:38,223 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:04:38,223 INFO L93 Difference]: Finished difference Result 415 states and 575 transitions. [2022-11-23 15:04:38,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 15:04:38,224 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 79 [2022-11-23 15:04:38,224 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:04:38,228 INFO L225 Difference]: With dead ends: 415 [2022-11-23 15:04:38,228 INFO L226 Difference]: Without dead ends: 243 [2022-11-23 15:04:38,232 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 15:04:38,237 INFO L413 NwaCegarLoop]: 232 mSDtfsCounter, 59 mSDsluCounter, 207 mSDsCounter, 0 mSdLazyCounter, 79 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 77 SdHoareTripleChecker+Valid, 439 SdHoareTripleChecker+Invalid, 80 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 79 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-23 15:04:38,238 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [77 Valid, 439 Invalid, 80 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 79 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-23 15:04:38,240 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 243 states. [2022-11-23 15:04:38,264 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 243 to 238. [2022-11-23 15:04:38,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 238 states, 143 states have (on average 1.3566433566433567) internal successors, (194), 145 states have internal predecessors, (194), 72 states have call successors, (72), 22 states have call predecessors, (72), 22 states have return successors, (71), 70 states have call predecessors, (71), 71 states have call successors, (71) [2022-11-23 15:04:38,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 238 states to 238 states and 337 transitions. [2022-11-23 15:04:38,268 INFO L78 Accepts]: Start accepts. Automaton has 238 states and 337 transitions. Word has length 79 [2022-11-23 15:04:38,268 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:04:38,268 INFO L495 AbstractCegarLoop]: Abstraction has 238 states and 337 transitions. [2022-11-23 15:04:38,269 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-11-23 15:04:38,269 INFO L276 IsEmpty]: Start isEmpty. Operand 238 states and 337 transitions. [2022-11-23 15:04:38,271 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2022-11-23 15:04:38,271 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:04:38,271 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 15:04:38,271 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-23 15:04:38,272 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 15:04:38,272 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:04:38,291 INFO L85 PathProgramCache]: Analyzing trace with hash -344943077, now seen corresponding path program 1 times [2022-11-23 15:04:38,291 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:04:38,292 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [345905528] [2022-11-23 15:04:38,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:04:38,292 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:04:38,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:04:38,490 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-23 15:04:38,491 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:04:38,491 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [345905528] [2022-11-23 15:04:38,491 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [345905528] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 15:04:38,492 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2099564873] [2022-11-23 15:04:38,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:04:38,492 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 15:04:38,492 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68bde73e-aa54-49fd-b30f-908fba3c78f4/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 15:04:38,498 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68bde73e-aa54-49fd-b30f-908fba3c78f4/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 15:04:38,515 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68bde73e-aa54-49fd-b30f-908fba3c78f4/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-23 15:04:38,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:04:38,864 INFO L263 TraceCheckSpWp]: Trace formula consists of 1118 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-23 15:04:38,873 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 15:04:38,959 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-23 15:04:38,960 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 15:04:39,076 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-23 15:04:39,078 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2099564873] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 15:04:39,078 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1287469231] [2022-11-23 15:04:39,104 INFO L159 IcfgInterpreter]: Started Sifa with 65 locations of interest [2022-11-23 15:04:39,104 INFO L166 IcfgInterpreter]: Building call graph [2022-11-23 15:04:39,110 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-23 15:04:39,115 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-23 15:04:39,119 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-23 15:05:18,660 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 444 for LOIs [2022-11-23 15:05:19,005 INFO L197 IcfgInterpreter]: Interpreting procedure setClientPrivateKey with input of size 441 for LOIs [2022-11-23 15:05:19,329 INFO L197 IcfgInterpreter]: Interpreting procedure sendEmail with input of size 470 for LOIs [2022-11-23 15:05:55,403 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing with input of size 468 for LOIs [2022-11-23 15:06:12,528 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing__wrappee__AutoResponder with input of size 268 for LOIs [2022-11-23 15:06:15,418 INFO L197 IcfgInterpreter]: Interpreting procedure isReadable with input of size 250 for LOIs [2022-11-23 15:06:15,451 INFO L197 IcfgInterpreter]: Interpreting procedure getEmailTo with input of size 250 for LOIs [2022-11-23 15:06:15,494 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailTo with input of size 448 for LOIs [2022-11-23 15:06:15,795 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailFrom with input of size 448 for LOIs [2022-11-23 15:06:16,650 INFO L197 IcfgInterpreter]: Interpreting procedure getClientAddressBookSize with input of size 444 for LOIs [2022-11-23 15:06:16,962 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-23 15:06:30,316 WARN L233 SmtUtils]: Spent 5.10s on a formula simplification. DAG size of input: 444 DAG size of output: 244 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 15:06:35,680 WARN L233 SmtUtils]: Spent 5.26s on a formula simplification. DAG size of input: 467 DAG size of output: 264 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 15:07:04,488 WARN L233 SmtUtils]: Spent 6.13s on a formula simplification. DAG size of input: 504 DAG size of output: 343 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 15:07:11,193 WARN L233 SmtUtils]: Spent 5.40s on a formula simplification. DAG size of input: 514 DAG size of output: 302 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 15:07:19,600 WARN L233 SmtUtils]: Spent 8.14s on a formula simplification. DAG size of input: 563 DAG size of output: 396 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 15:07:27,977 WARN L233 SmtUtils]: Spent 8.09s on a formula simplification. DAG size of input: 565 DAG size of output: 398 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 15:07:33,365 WARN L233 SmtUtils]: Spent 5.09s on a formula simplification. DAG size of input: 567 DAG size of output: 330 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 15:07:38,763 WARN L233 SmtUtils]: Spent 5.08s on a formula simplification. DAG size of input: 565 DAG size of output: 328 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 15:07:44,248 WARN L233 SmtUtils]: Spent 5.11s on a formula simplification. DAG size of input: 569 DAG size of output: 332 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 15:07:52,646 WARN L233 SmtUtils]: Spent 8.06s on a formula simplification. DAG size of input: 564 DAG size of output: 397 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 15:08:20,805 WARN L233 SmtUtils]: Spent 6.21s on a formula simplification. DAG size of input: 448 DAG size of output: 335 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 15:08:27,513 WARN L233 SmtUtils]: Spent 6.33s on a formula simplification. DAG size of input: 464 DAG size of output: 340 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 15:08:33,477 WARN L233 SmtUtils]: Spent 5.51s on a formula simplification. DAG size of input: 520 DAG size of output: 285 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 15:08:40,050 WARN L233 SmtUtils]: Spent 6.15s on a formula simplification. DAG size of input: 533 DAG size of output: 325 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 15:08:50,220 WARN L233 SmtUtils]: Spent 5.06s on a formula simplification. DAG size of input: 570 DAG size of output: 343 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 15:09:16,245 WARN L233 SmtUtils]: Spent 5.06s on a formula simplification. DAG size of input: 497 DAG size of output: 337 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 15:09:27,026 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [1287469231] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:09:27,026 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-11-23 15:09:27,026 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [48] imperfect sequences [4, 4, 4] total 54 [2022-11-23 15:09:27,027 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1066826620] [2022-11-23 15:09:27,027 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:09:27,027 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2022-11-23 15:09:27,028 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:09:27,028 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2022-11-23 15:09:27,029 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=147, Invalid=2715, Unknown=0, NotChecked=0, Total=2862 [2022-11-23 15:09:27,030 INFO L87 Difference]: Start difference. First operand 238 states and 337 transitions. Second operand has 49 states, 32 states have (on average 1.28125) internal successors, (41), 29 states have internal predecessors, (41), 16 states have call successors, (17), 10 states have call predecessors, (17), 7 states have return successors, (14), 13 states have call predecessors, (14), 13 states have call successors, (14) [2022-11-23 15:09:56,255 WARN L233 SmtUtils]: Spent 5.02s on a formula simplification. DAG size of input: 473 DAG size of output: 357 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 15:10:31,264 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:10:31,265 INFO L93 Difference]: Finished difference Result 632 states and 964 transitions. [2022-11-23 15:10:31,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2022-11-23 15:10:31,267 INFO L78 Accepts]: Start accepts. Automaton has has 49 states, 32 states have (on average 1.28125) internal successors, (41), 29 states have internal predecessors, (41), 16 states have call successors, (17), 10 states have call predecessors, (17), 7 states have return successors, (14), 13 states have call predecessors, (14), 13 states have call successors, (14) Word has length 80 [2022-11-23 15:10:31,268 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:10:31,271 INFO L225 Difference]: With dead ends: 632 [2022-11-23 15:10:31,271 INFO L226 Difference]: Without dead ends: 412 [2022-11-23 15:10:31,274 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 250 GetRequests, 189 SyntacticMatches, 1 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 792 ImplicationChecksByTransitivity, 222.0s TimeCoverageRelationStatistics Valid=202, Invalid=3580, Unknown=0, NotChecked=0, Total=3782 [2022-11-23 15:10:31,275 INFO L413 NwaCegarLoop]: 261 mSDtfsCounter, 192 mSDsluCounter, 5215 mSDsCounter, 0 mSdLazyCounter, 7479 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 30.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 199 SdHoareTripleChecker+Valid, 5476 SdHoareTripleChecker+Invalid, 7507 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.3s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 7479 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 31.5s IncrementalHoareTripleChecker+Time [2022-11-23 15:10:31,275 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [199 Valid, 5476 Invalid, 7507 Unknown, 0 Unchecked, 0.3s Time], IncrementalHoareTripleChecker [28 Valid, 7479 Invalid, 0 Unknown, 0 Unchecked, 31.5s Time] [2022-11-23 15:10:31,277 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 412 states. [2022-11-23 15:10:31,427 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 412 to 306. [2022-11-23 15:10:31,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 306 states, 193 states have (on average 1.3523316062176165) internal successors, (261), 196 states have internal predecessors, (261), 83 states have call successors, (83), 31 states have call predecessors, (83), 29 states have return successors, (83), 78 states have call predecessors, (83), 82 states have call successors, (83) [2022-11-23 15:10:31,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 306 states to 306 states and 427 transitions. [2022-11-23 15:10:31,430 INFO L78 Accepts]: Start accepts. Automaton has 306 states and 427 transitions. Word has length 80 [2022-11-23 15:10:31,431 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:10:31,431 INFO L495 AbstractCegarLoop]: Abstraction has 306 states and 427 transitions. [2022-11-23 15:10:31,432 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 32 states have (on average 1.28125) internal successors, (41), 29 states have internal predecessors, (41), 16 states have call successors, (17), 10 states have call predecessors, (17), 7 states have return successors, (14), 13 states have call predecessors, (14), 13 states have call successors, (14) [2022-11-23 15:10:31,432 INFO L276 IsEmpty]: Start isEmpty. Operand 306 states and 427 transitions. [2022-11-23 15:10:31,434 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2022-11-23 15:10:31,434 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:10:31,435 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 15:10:31,447 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68bde73e-aa54-49fd-b30f-908fba3c78f4/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-11-23 15:10:31,642 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68bde73e-aa54-49fd-b30f-908fba3c78f4/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 15:10:31,642 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 15:10:31,643 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:10:31,643 INFO L85 PathProgramCache]: Analyzing trace with hash -770581194, now seen corresponding path program 1 times [2022-11-23 15:10:31,643 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:10:31,643 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [316651633] [2022-11-23 15:10:31,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:10:31,643 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:10:31,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:10:31,752 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-11-23 15:10:31,753 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:10:31,753 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [316651633] [2022-11-23 15:10:31,753 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [316651633] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:10:31,753 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 15:10:31,753 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 15:10:31,754 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [351687519] [2022-11-23 15:10:31,754 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:10:31,754 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 15:10:31,755 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:10:31,756 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 15:10:31,756 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 15:10:31,756 INFO L87 Difference]: Start difference. First operand 306 states and 427 transitions. Second operand has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 2 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-11-23 15:10:32,125 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:10:32,125 INFO L93 Difference]: Finished difference Result 714 states and 1034 transitions. [2022-11-23 15:10:32,125 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 15:10:32,126 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 2 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 85 [2022-11-23 15:10:32,126 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:10:32,129 INFO L225 Difference]: With dead ends: 714 [2022-11-23 15:10:32,129 INFO L226 Difference]: Without dead ends: 434 [2022-11-23 15:10:32,130 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 15:10:32,131 INFO L413 NwaCegarLoop]: 242 mSDtfsCounter, 57 mSDsluCounter, 215 mSDsCounter, 0 mSdLazyCounter, 81 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 75 SdHoareTripleChecker+Valid, 457 SdHoareTripleChecker+Invalid, 82 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 81 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-23 15:10:32,132 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [75 Valid, 457 Invalid, 82 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 81 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-23 15:10:32,133 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 434 states. [2022-11-23 15:10:32,326 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 434 to 427. [2022-11-23 15:10:32,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 427 states, 283 states have (on average 1.4169611307420495) internal successors, (401), 286 states have internal predecessors, (401), 114 states have call successors, (114), 31 states have call predecessors, (114), 29 states have return successors, (114), 109 states have call predecessors, (114), 113 states have call successors, (114) [2022-11-23 15:10:32,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 427 states to 427 states and 629 transitions. [2022-11-23 15:10:32,330 INFO L78 Accepts]: Start accepts. Automaton has 427 states and 629 transitions. Word has length 85 [2022-11-23 15:10:32,331 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:10:32,331 INFO L495 AbstractCegarLoop]: Abstraction has 427 states and 629 transitions. [2022-11-23 15:10:32,331 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 2 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-11-23 15:10:32,332 INFO L276 IsEmpty]: Start isEmpty. Operand 427 states and 629 transitions. [2022-11-23 15:10:32,334 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2022-11-23 15:10:32,334 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:10:32,335 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 15:10:32,335 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-23 15:10:32,335 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 15:10:32,336 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:10:32,336 INFO L85 PathProgramCache]: Analyzing trace with hash 749809214, now seen corresponding path program 1 times [2022-11-23 15:10:32,336 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:10:32,336 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [920660012] [2022-11-23 15:10:32,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:10:32,337 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:10:32,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:10:32,485 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-23 15:10:32,486 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:10:32,486 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [920660012] [2022-11-23 15:10:32,487 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [920660012] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 15:10:32,487 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [691366995] [2022-11-23 15:10:32,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:10:32,488 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 15:10:32,488 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68bde73e-aa54-49fd-b30f-908fba3c78f4/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 15:10:32,491 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68bde73e-aa54-49fd-b30f-908fba3c78f4/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 15:10:32,526 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68bde73e-aa54-49fd-b30f-908fba3c78f4/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-23 15:10:32,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:10:32,855 INFO L263 TraceCheckSpWp]: Trace formula consists of 1132 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-23 15:10:32,859 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 15:10:32,883 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-23 15:10:32,883 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 15:10:32,960 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-23 15:10:32,960 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [691366995] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 15:10:32,960 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [610609646] [2022-11-23 15:10:32,964 INFO L159 IcfgInterpreter]: Started Sifa with 70 locations of interest [2022-11-23 15:10:32,964 INFO L166 IcfgInterpreter]: Building call graph [2022-11-23 15:10:32,964 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-23 15:10:32,965 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-23 15:10:32,965 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-23 15:11:07,077 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 439 for LOIs [2022-11-23 15:11:07,390 INFO L197 IcfgInterpreter]: Interpreting procedure setClientPrivateKey with input of size 441 for LOIs [2022-11-23 15:11:07,729 INFO L197 IcfgInterpreter]: Interpreting procedure sendEmail with input of size 470 for LOIs [2022-11-23 15:11:42,230 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing with input of size 468 for LOIs [2022-11-23 15:11:59,240 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing__wrappee__AutoResponder with input of size 268 for LOIs [2022-11-23 15:12:05,917 INFO L197 IcfgInterpreter]: Interpreting procedure isReadable with input of size 250 for LOIs [2022-11-23 15:12:05,951 INFO L197 IcfgInterpreter]: Interpreting procedure getEmailTo with input of size 250 for LOIs [2022-11-23 15:12:05,992 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailTo with input of size 448 for LOIs [2022-11-23 15:12:06,297 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailFrom with input of size 448 for LOIs [2022-11-23 15:12:07,049 INFO L197 IcfgInterpreter]: Interpreting procedure isSigned with input of size 250 for LOIs [2022-11-23 15:12:07,094 INFO L197 IcfgInterpreter]: Interpreting procedure getClientAddressBookSize with input of size 455 for LOIs [2022-11-23 15:12:07,662 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-23 15:12:51,876 WARN L233 SmtUtils]: Spent 6.19s on a formula simplification. DAG size of input: 504 DAG size of output: 343 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 15:12:58,644 WARN L233 SmtUtils]: Spent 5.44s on a formula simplification. DAG size of input: 514 DAG size of output: 302 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 15:13:07,062 WARN L233 SmtUtils]: Spent 8.14s on a formula simplification. DAG size of input: 563 DAG size of output: 396 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 15:13:15,649 WARN L233 SmtUtils]: Spent 8.30s on a formula simplification. DAG size of input: 565 DAG size of output: 398 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 15:13:21,240 WARN L233 SmtUtils]: Spent 5.22s on a formula simplification. DAG size of input: 567 DAG size of output: 330 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 15:13:26,689 WARN L233 SmtUtils]: Spent 5.10s on a formula simplification. DAG size of input: 565 DAG size of output: 328 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 15:13:32,316 WARN L233 SmtUtils]: Spent 5.27s on a formula simplification. DAG size of input: 569 DAG size of output: 332 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 15:13:40,843 WARN L233 SmtUtils]: Spent 8.16s on a formula simplification. DAG size of input: 564 DAG size of output: 397 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 15:14:09,252 WARN L233 SmtUtils]: Spent 6.29s on a formula simplification. DAG size of input: 448 DAG size of output: 335 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 15:14:15,979 WARN L233 SmtUtils]: Spent 6.34s on a formula simplification. DAG size of input: 464 DAG size of output: 340 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 15:14:22,049 WARN L233 SmtUtils]: Spent 5.63s on a formula simplification. DAG size of input: 520 DAG size of output: 285 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 15:14:28,757 WARN L233 SmtUtils]: Spent 6.25s on a formula simplification. DAG size of input: 533 DAG size of output: 325 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 15:14:39,099 WARN L233 SmtUtils]: Spent 5.18s on a formula simplification. DAG size of input: 570 DAG size of output: 343 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 15:14:45,000 WARN L233 SmtUtils]: Spent 5.39s on a formula simplification. DAG size of input: 455 DAG size of output: 261 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 15:14:51,024 WARN L233 SmtUtils]: Spent 5.49s on a formula simplification. DAG size of input: 479 DAG size of output: 268 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 15:15:09,789 WARN L233 SmtUtils]: Spent 5.08s on a formula simplification. DAG size of input: 497 DAG size of output: 337 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 15:15:33,286 WARN L233 SmtUtils]: Spent 8.59s on a formula simplification. DAG size of input: 539 DAG size of output: 365 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 15:16:01,845 WARN L233 SmtUtils]: Spent 5.18s on a formula simplification. DAG size of input: 635 DAG size of output: 389 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 15:16:01,852 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [610609646] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:16:01,852 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-11-23 15:16:01,852 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [56] imperfect sequences [4, 4, 4] total 62 [2022-11-23 15:16:01,853 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1503525005] [2022-11-23 15:16:01,853 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:16:01,853 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 57 states [2022-11-23 15:16:01,854 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:16:01,854 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 57 interpolants. [2022-11-23 15:16:01,855 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=198, Invalid=3584, Unknown=0, NotChecked=0, Total=3782 [2022-11-23 15:16:01,855 INFO L87 Difference]: Start difference. First operand 427 states and 629 transitions. Second operand has 57 states, 39 states have (on average 1.1282051282051282) internal successors, (44), 35 states have internal predecessors, (44), 17 states have call successors, (18), 11 states have call predecessors, (18), 8 states have return successors, (15), 14 states have call predecessors, (15), 14 states have call successors, (15) [2022-11-23 15:16:30,894 WARN L233 SmtUtils]: Spent 5.03s on a formula simplification. DAG size of input: 473 DAG size of output: 357 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 15:17:04,261 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:17:04,262 INFO L93 Difference]: Finished difference Result 584 states and 857 transitions. [2022-11-23 15:17:04,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2022-11-23 15:17:04,263 INFO L78 Accepts]: Start accepts. Automaton has has 57 states, 39 states have (on average 1.1282051282051282) internal successors, (44), 35 states have internal predecessors, (44), 17 states have call successors, (18), 11 states have call predecessors, (18), 8 states have return successors, (15), 14 states have call predecessors, (15), 14 states have call successors, (15) Word has length 85 [2022-11-23 15:17:04,263 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:17:04,266 INFO L225 Difference]: With dead ends: 584 [2022-11-23 15:17:04,266 INFO L226 Difference]: Without dead ends: 495 [2022-11-23 15:17:04,268 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 265 GetRequests, 196 SyntacticMatches, 1 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1032 ImplicationChecksByTransitivity, 266.3s TimeCoverageRelationStatistics Valid=253, Invalid=4577, Unknown=0, NotChecked=0, Total=4830 [2022-11-23 15:17:04,269 INFO L413 NwaCegarLoop]: 220 mSDtfsCounter, 275 mSDsluCounter, 4967 mSDsCounter, 0 mSdLazyCounter, 7176 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 28.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 283 SdHoareTripleChecker+Valid, 5187 SdHoareTripleChecker+Invalid, 7193 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 7176 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 29.4s IncrementalHoareTripleChecker+Time [2022-11-23 15:17:04,269 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [283 Valid, 5187 Invalid, 7193 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [17 Valid, 7176 Invalid, 0 Unknown, 0 Unchecked, 29.4s Time] [2022-11-23 15:17:04,270 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 495 states. [2022-11-23 15:17:04,505 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 495 to 433. [2022-11-23 15:17:04,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 433 states, 288 states have (on average 1.4131944444444444) internal successors, (407), 291 states have internal predecessors, (407), 114 states have call successors, (114), 32 states have call predecessors, (114), 30 states have return successors, (114), 109 states have call predecessors, (114), 113 states have call successors, (114) [2022-11-23 15:17:04,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 433 states to 433 states and 635 transitions. [2022-11-23 15:17:04,508 INFO L78 Accepts]: Start accepts. Automaton has 433 states and 635 transitions. Word has length 85 [2022-11-23 15:17:04,509 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:17:04,509 INFO L495 AbstractCegarLoop]: Abstraction has 433 states and 635 transitions. [2022-11-23 15:17:04,509 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 57 states, 39 states have (on average 1.1282051282051282) internal successors, (44), 35 states have internal predecessors, (44), 17 states have call successors, (18), 11 states have call predecessors, (18), 8 states have return successors, (15), 14 states have call predecessors, (15), 14 states have call successors, (15) [2022-11-23 15:17:04,509 INFO L276 IsEmpty]: Start isEmpty. Operand 433 states and 635 transitions. [2022-11-23 15:17:04,512 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2022-11-23 15:17:04,512 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:17:04,512 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 15:17:04,520 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68bde73e-aa54-49fd-b30f-908fba3c78f4/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-23 15:17:04,721 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68bde73e-aa54-49fd-b30f-908fba3c78f4/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 15:17:04,721 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 15:17:04,721 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:17:04,721 INFO L85 PathProgramCache]: Analyzing trace with hash -2140229697, now seen corresponding path program 1 times [2022-11-23 15:17:04,722 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:17:04,722 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1810746699] [2022-11-23 15:17:04,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:17:04,722 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:17:04,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:17:04,894 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-11-23 15:17:04,894 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:17:04,895 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1810746699] [2022-11-23 15:17:04,895 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1810746699] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 15:17:04,899 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1211104089] [2022-11-23 15:17:04,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:17:04,899 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 15:17:04,900 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68bde73e-aa54-49fd-b30f-908fba3c78f4/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 15:17:04,901 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68bde73e-aa54-49fd-b30f-908fba3c78f4/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 15:17:04,927 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68bde73e-aa54-49fd-b30f-908fba3c78f4/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-23 15:17:05,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:17:05,239 INFO L263 TraceCheckSpWp]: Trace formula consists of 1139 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-23 15:17:05,243 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 15:17:05,276 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-11-23 15:17:05,276 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 15:17:05,339 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-11-23 15:17:05,339 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1211104089] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 15:17:05,340 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [596824316] [2022-11-23 15:17:05,346 INFO L159 IcfgInterpreter]: Started Sifa with 69 locations of interest [2022-11-23 15:17:05,346 INFO L166 IcfgInterpreter]: Building call graph [2022-11-23 15:17:05,347 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-23 15:17:05,348 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-23 15:17:05,348 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-23 15:17:52,114 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 439 for LOIs [2022-11-23 15:17:52,498 INFO L197 IcfgInterpreter]: Interpreting procedure setClientPrivateKey with input of size 450 for LOIs [2022-11-23 15:17:52,815 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-23 15:18:18,957 WARN L233 SmtUtils]: Spent 5.07s on a formula simplification. DAG size of input: 473 DAG size of output: 265 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate)