./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/email_spec0_productSimulator.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 38b53e6a Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e303800-2c99-4fe1-9f4f-b5a9e01d4e24/bin/utaipan-ByfvJB40ur/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e303800-2c99-4fe1-9f4f-b5a9e01d4e24/bin/utaipan-ByfvJB40ur/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e303800-2c99-4fe1-9f4f-b5a9e01d4e24/bin/utaipan-ByfvJB40ur/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e303800-2c99-4fe1-9f4f-b5a9e01d4e24/bin/utaipan-ByfvJB40ur/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/email_spec0_productSimulator.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e303800-2c99-4fe1-9f4f-b5a9e01d4e24/bin/utaipan-ByfvJB40ur/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e303800-2c99-4fe1-9f4f-b5a9e01d4e24/bin/utaipan-ByfvJB40ur --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 1b548755c8e9cfcfe9ed8b47fb1ac823ac6821056e7770bffa975fdbf413b243 --- 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-38b53e6 [2022-11-26 00:35:24,757 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-26 00:35:24,760 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-26 00:35:24,799 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-26 00:35:24,800 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-26 00:35:24,804 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-26 00:35:24,807 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-26 00:35:24,812 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-26 00:35:24,814 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-26 00:35:24,821 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-26 00:35:24,823 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-26 00:35:24,825 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-26 00:35:24,826 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-26 00:35:24,832 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-26 00:35:24,834 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-26 00:35:24,836 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-26 00:35:24,838 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-26 00:35:24,839 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-26 00:35:24,841 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-26 00:35:24,848 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-26 00:35:24,851 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-26 00:35:24,853 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-26 00:35:24,855 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-26 00:35:24,856 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-26 00:35:24,868 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-26 00:35:24,868 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-26 00:35:24,869 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-26 00:35:24,871 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-26 00:35:24,871 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-26 00:35:24,873 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-26 00:35:24,874 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-26 00:35:24,875 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-26 00:35:24,877 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-26 00:35:24,879 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-26 00:35:24,882 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-26 00:35:24,882 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-26 00:35:24,883 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-26 00:35:24,884 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-26 00:35:24,884 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-26 00:35:24,885 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-26 00:35:24,886 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-26 00:35:24,887 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e303800-2c99-4fe1-9f4f-b5a9e01d4e24/bin/utaipan-ByfvJB40ur/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-11-26 00:35:24,934 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-26 00:35:24,935 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-26 00:35:24,936 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-26 00:35:24,936 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-26 00:35:24,937 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-26 00:35:24,938 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-26 00:35:24,938 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-26 00:35:24,939 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-26 00:35:24,939 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-26 00:35:24,939 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-26 00:35:24,941 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-26 00:35:24,941 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-26 00:35:24,941 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-26 00:35:24,942 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-26 00:35:24,942 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-26 00:35:24,943 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-26 00:35:24,943 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-26 00:35:24,943 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-26 00:35:24,944 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-26 00:35:24,945 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-26 00:35:24,945 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-26 00:35:24,945 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-26 00:35:24,946 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-26 00:35:24,946 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-26 00:35:24,947 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-26 00:35:24,947 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-26 00:35:24,947 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-26 00:35:24,948 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-26 00:35:24,948 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-26 00:35:24,949 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-26 00:35:24,949 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-26 00:35:24,950 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-26 00:35:24,950 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-26 00:35:24,950 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-26 00:35:24,951 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-26 00:35:24,951 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-26 00:35:24,951 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-26 00:35:24,952 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-26 00:35:24,952 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-26 00:35:24,953 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-26 00:35:24,953 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-26 00:35:24,953 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_1e303800-2c99-4fe1-9f4f-b5a9e01d4e24/bin/utaipan-ByfvJB40ur/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e303800-2c99-4fe1-9f4f-b5a9e01d4e24/bin/utaipan-ByfvJB40ur Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1b548755c8e9cfcfe9ed8b47fb1ac823ac6821056e7770bffa975fdbf413b243 [2022-11-26 00:35:25,303 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-26 00:35:25,330 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-26 00:35:25,333 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-26 00:35:25,335 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-26 00:35:25,336 INFO L275 PluginConnector]: CDTParser initialized [2022-11-26 00:35:25,337 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e303800-2c99-4fe1-9f4f-b5a9e01d4e24/bin/utaipan-ByfvJB40ur/../../sv-benchmarks/c/product-lines/email_spec0_productSimulator.cil.c [2022-11-26 00:35:29,183 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-26 00:35:29,633 INFO L351 CDTParser]: Found 1 translation units. [2022-11-26 00:35:29,633 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e303800-2c99-4fe1-9f4f-b5a9e01d4e24/sv-benchmarks/c/product-lines/email_spec0_productSimulator.cil.c [2022-11-26 00:35:29,659 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e303800-2c99-4fe1-9f4f-b5a9e01d4e24/bin/utaipan-ByfvJB40ur/data/b49fdb11d/58a9d0110e0048f8a94766b32a1f657b/FLAGc1621ac87 [2022-11-26 00:35:29,675 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e303800-2c99-4fe1-9f4f-b5a9e01d4e24/bin/utaipan-ByfvJB40ur/data/b49fdb11d/58a9d0110e0048f8a94766b32a1f657b [2022-11-26 00:35:29,678 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-26 00:35:29,680 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-26 00:35:29,682 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-26 00:35:29,682 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-26 00:35:29,686 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-26 00:35:29,687 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 12:35:29" (1/1) ... [2022-11-26 00:35:29,688 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@da11c27 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:35:29, skipping insertion in model container [2022-11-26 00:35:29,689 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 12:35:29" (1/1) ... [2022-11-26 00:35:29,698 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-26 00:35:29,807 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-26 00:35:30,142 WARN L623 FunctionHandler]: Unknown extern function puts [2022-11-26 00:35:30,165 WARN L623 FunctionHandler]: Unknown extern function puts [2022-11-26 00:35:30,166 WARN L623 FunctionHandler]: Unknown extern function puts [2022-11-26 00:35:30,184 WARN L623 FunctionHandler]: Unknown extern function puts [2022-11-26 00:35:30,245 WARN L623 FunctionHandler]: Unknown extern function puts [2022-11-26 00:35:30,259 WARN L623 FunctionHandler]: Unknown extern function puts [2022-11-26 00:35:30,271 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_1e303800-2c99-4fe1-9f4f-b5a9e01d4e24/sv-benchmarks/c/product-lines/email_spec0_productSimulator.cil.c[14867,14880] [2022-11-26 00:35:30,470 WARN L623 FunctionHandler]: Unknown extern function puts [2022-11-26 00:35:30,472 WARN L623 FunctionHandler]: Unknown extern function puts [2022-11-26 00:35:30,482 WARN L623 FunctionHandler]: Unknown extern function puts [2022-11-26 00:35:30,512 WARN L623 FunctionHandler]: Unknown extern function puts [2022-11-26 00:35:30,618 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-26 00:35:30,648 INFO L203 MainTranslator]: Completed pre-run [2022-11-26 00:35:30,675 WARN L623 FunctionHandler]: Unknown extern function puts [2022-11-26 00:35:30,678 WARN L623 FunctionHandler]: Unknown extern function puts [2022-11-26 00:35:30,687 WARN L623 FunctionHandler]: Unknown extern function puts [2022-11-26 00:35:30,693 WARN L623 FunctionHandler]: Unknown extern function puts [2022-11-26 00:35:30,702 WARN L623 FunctionHandler]: Unknown extern function puts [2022-11-26 00:35:30,704 WARN L623 FunctionHandler]: Unknown extern function puts [2022-11-26 00:35:30,707 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_1e303800-2c99-4fe1-9f4f-b5a9e01d4e24/sv-benchmarks/c/product-lines/email_spec0_productSimulator.cil.c[14867,14880] [2022-11-26 00:35:30,751 WARN L623 FunctionHandler]: Unknown extern function puts [2022-11-26 00:35:30,752 WARN L623 FunctionHandler]: Unknown extern function puts [2022-11-26 00:35:30,754 WARN L623 FunctionHandler]: Unknown extern function puts [2022-11-26 00:35:30,764 WARN L623 FunctionHandler]: Unknown extern function puts [2022-11-26 00:35:30,789 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-26 00:35:30,859 INFO L208 MainTranslator]: Completed translation [2022-11-26 00:35:30,859 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:35:30 WrapperNode [2022-11-26 00:35:30,860 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-26 00:35:30,861 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-26 00:35:30,861 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-26 00:35:30,861 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-26 00:35:30,889 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:35:30" (1/1) ... [2022-11-26 00:35:30,954 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:35:30" (1/1) ... [2022-11-26 00:35:31,026 INFO L138 Inliner]: procedures = 151, calls = 282, calls flagged for inlining = 67, calls inlined = 64, statements flattened = 1303 [2022-11-26 00:35:31,026 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-26 00:35:31,027 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-26 00:35:31,027 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-26 00:35:31,028 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-26 00:35:31,041 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:35:30" (1/1) ... [2022-11-26 00:35:31,041 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:35:30" (1/1) ... [2022-11-26 00:35:31,067 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:35:30" (1/1) ... [2022-11-26 00:35:31,068 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:35:30" (1/1) ... [2022-11-26 00:35:31,134 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:35:30" (1/1) ... [2022-11-26 00:35:31,163 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:35:30" (1/1) ... [2022-11-26 00:35:31,171 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:35:30" (1/1) ... [2022-11-26 00:35:31,192 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:35:30" (1/1) ... [2022-11-26 00:35:31,202 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-26 00:35:31,203 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-26 00:35:31,203 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-26 00:35:31,204 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-26 00:35:31,205 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:35:30" (1/1) ... [2022-11-26 00:35:31,213 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-26 00:35:31,226 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e303800-2c99-4fe1-9f4f-b5a9e01d4e24/bin/utaipan-ByfvJB40ur/z3 [2022-11-26 00:35:31,245 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e303800-2c99-4fe1-9f4f-b5a9e01d4e24/bin/utaipan-ByfvJB40ur/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-26 00:35:31,279 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e303800-2c99-4fe1-9f4f-b5a9e01d4e24/bin/utaipan-ByfvJB40ur/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-26 00:35:31,307 INFO L130 BoogieDeclarations]: Found specification of procedure getClientPrivateKey [2022-11-26 00:35:31,308 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientPrivateKey [2022-11-26 00:35:31,309 INFO L130 BoogieDeclarations]: Found specification of procedure setup_chuck__before__Keys [2022-11-26 00:35:31,309 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_chuck__before__Keys [2022-11-26 00:35:31,309 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing__before__Sign [2022-11-26 00:35:31,310 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing__before__Sign [2022-11-26 00:35:31,311 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookSize [2022-11-26 00:35:31,311 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookSize [2022-11-26 00:35:31,311 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailEncryptionKey [2022-11-26 00:35:31,311 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailEncryptionKey [2022-11-26 00:35:31,311 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookAddress [2022-11-26 00:35:31,312 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookAddress [2022-11-26 00:35:31,312 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailEncryptionKey [2022-11-26 00:35:31,312 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailEncryptionKey [2022-11-26 00:35:31,312 INFO L130 BoogieDeclarations]: Found specification of procedure printMail__before__Verify [2022-11-26 00:35:31,313 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail__before__Verify [2022-11-26 00:35:31,313 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2022-11-26 00:35:31,313 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2022-11-26 00:35:31,313 INFO L130 BoogieDeclarations]: Found specification of procedure setup_bob__before__Keys [2022-11-26 00:35:31,313 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_bob__before__Keys [2022-11-26 00:35:31,314 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2022-11-26 00:35:31,314 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2022-11-26 00:35:31,314 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable [2022-11-26 00:35:31,315 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable [2022-11-26 00:35:31,315 INFO L130 BoogieDeclarations]: Found specification of procedure createClientKeyringEntry [2022-11-26 00:35:31,315 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientKeyringEntry [2022-11-26 00:35:31,316 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__before__Decrypt [2022-11-26 00:35:31,316 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__before__Decrypt [2022-11-26 00:35:31,317 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing__before__Encrypt [2022-11-26 00:35:31,318 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing__before__Encrypt [2022-11-26 00:35:31,318 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsEncrypted [2022-11-26 00:35:31,318 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsEncrypted [2022-11-26 00:35:31,318 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSignKey [2022-11-26 00:35:31,319 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSignKey [2022-11-26 00:35:31,319 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAdd [2022-11-26 00:35:31,319 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAdd [2022-11-26 00:35:31,320 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2022-11-26 00:35:31,320 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__before__Forward [2022-11-26 00:35:31,320 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__before__Forward [2022-11-26 00:35:31,320 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailFrom [2022-11-26 00:35:31,320 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailFrom [2022-11-26 00:35:31,320 INFO L130 BoogieDeclarations]: Found specification of procedure queue [2022-11-26 00:35:31,321 INFO L138 BoogieDeclarations]: Found implementation of procedure queue [2022-11-26 00:35:31,321 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2022-11-26 00:35:31,322 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2022-11-26 00:35:31,322 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable__before__Encrypt [2022-11-26 00:35:31,322 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable__before__Encrypt [2022-11-26 00:35:31,322 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-26 00:35:31,322 INFO L130 BoogieDeclarations]: Found specification of procedure isSigned [2022-11-26 00:35:31,323 INFO L138 BoogieDeclarations]: Found implementation of procedure isSigned [2022-11-26 00:35:31,323 INFO L130 BoogieDeclarations]: Found specification of procedure isKeyPairValid [2022-11-26 00:35:31,323 INFO L138 BoogieDeclarations]: Found implementation of procedure isKeyPairValid [2022-11-26 00:35:31,324 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing__before__AddressBook [2022-11-26 00:35:31,325 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing__before__AddressBook [2022-11-26 00:35:31,325 INFO L130 BoogieDeclarations]: Found specification of procedure printMail__before__Encrypt [2022-11-26 00:35:31,325 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail__before__Encrypt [2022-11-26 00:35:31,326 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__before__AutoResponder [2022-11-26 00:35:31,326 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__before__AutoResponder [2022-11-26 00:35:31,327 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookSize [2022-11-26 00:35:31,327 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookSize [2022-11-26 00:35:31,327 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringUser [2022-11-26 00:35:31,327 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringUser [2022-11-26 00:35:31,328 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringPublicKey [2022-11-26 00:35:31,328 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringPublicKey [2022-11-26 00:35:31,328 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2022-11-26 00:35:31,328 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2022-11-26 00:35:31,328 INFO L130 BoogieDeclarations]: Found specification of procedure findPublicKey [2022-11-26 00:35:31,329 INFO L138 BoogieDeclarations]: Found implementation of procedure findPublicKey [2022-11-26 00:35:31,329 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2022-11-26 00:35:31,329 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2022-11-26 00:35:31,329 INFO L130 BoogieDeclarations]: Found specification of procedure isEncrypted [2022-11-26 00:35:31,329 INFO L138 BoogieDeclarations]: Found implementation of procedure isEncrypted [2022-11-26 00:35:31,330 INFO L130 BoogieDeclarations]: Found specification of procedure setup_rjh__before__Keys [2022-11-26 00:35:31,330 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_rjh__before__Keys [2022-11-26 00:35:31,330 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__before__Verify [2022-11-26 00:35:31,330 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__before__Verify [2022-11-26 00:35:31,331 INFO L130 BoogieDeclarations]: Found specification of procedure setClientPrivateKey [2022-11-26 00:35:31,331 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientPrivateKey [2022-11-26 00:35:31,331 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailTo [2022-11-26 00:35:31,331 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailTo [2022-11-26 00:35:31,331 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-26 00:35:31,332 INFO L130 BoogieDeclarations]: Found specification of procedure generateKeyPair [2022-11-26 00:35:31,333 INFO L138 BoogieDeclarations]: Found implementation of procedure generateKeyPair [2022-11-26 00:35:31,334 INFO L130 BoogieDeclarations]: Found specification of procedure printMail__before__Sign [2022-11-26 00:35:31,334 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail__before__Sign [2022-11-26 00:35:31,334 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2022-11-26 00:35:31,335 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2022-11-26 00:35:31,336 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookAddress [2022-11-26 00:35:31,339 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookAddress [2022-11-26 00:35:31,340 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-26 00:35:31,340 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-26 00:35:31,707 INFO L235 CfgBuilder]: Building ICFG [2022-11-26 00:35:31,710 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-26 00:35:33,237 INFO L276 CfgBuilder]: Performing block encoding [2022-11-26 00:35:34,188 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-26 00:35:34,189 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-26 00:35:34,194 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 12:35:34 BoogieIcfgContainer [2022-11-26 00:35:34,200 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-26 00:35:34,205 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-26 00:35:34,205 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-26 00:35:34,209 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-26 00:35:34,209 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.11 12:35:29" (1/3) ... [2022-11-26 00:35:34,212 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@35e6c505 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 12:35:34, skipping insertion in model container [2022-11-26 00:35:34,213 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:35:30" (2/3) ... [2022-11-26 00:35:34,214 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@35e6c505 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 12:35:34, skipping insertion in model container [2022-11-26 00:35:34,214 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 12:35:34" (3/3) ... [2022-11-26 00:35:34,218 INFO L112 eAbstractionObserver]: Analyzing ICFG email_spec0_productSimulator.cil.c [2022-11-26 00:35:34,240 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-26 00:35:34,240 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-26 00:35:34,346 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-26 00:35:34,354 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;@3d0a450f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-26 00:35:34,355 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-26 00:35:34,365 INFO L276 IsEmpty]: Start isEmpty. Operand has 377 states, 223 states have (on average 1.3318385650224216) internal successors, (297), 243 states have internal predecessors, (297), 109 states have call successors, (109), 43 states have call predecessors, (109), 43 states have return successors, (109), 108 states have call predecessors, (109), 109 states have call successors, (109) [2022-11-26 00:35:34,400 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2022-11-26 00:35:34,405 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:35:34,407 INFO L195 NwaCegarLoop]: trace histogram [8, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 00:35:34,408 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting incoming__before__VerifyErr0ASSERT_VIOLATIONERROR_FUNCTION === [incoming__before__VerifyErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-26 00:35:34,417 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:35:34,417 INFO L85 PathProgramCache]: Analyzing trace with hash -1210651593, now seen corresponding path program 1 times [2022-11-26 00:35:34,430 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:35:34,430 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1182003830] [2022-11-26 00:35:34,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:35:34,431 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:35:34,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:35:35,383 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2022-11-26 00:35:35,385 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:35:35,385 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1182003830] [2022-11-26 00:35:35,386 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1182003830] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:35:35,387 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 00:35:35,387 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-26 00:35:35,389 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1240123448] [2022-11-26 00:35:35,390 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:35:35,397 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-26 00:35:35,398 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:35:35,440 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-26 00:35:35,441 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-26 00:35:35,444 INFO L87 Difference]: Start difference. First operand has 377 states, 223 states have (on average 1.3318385650224216) internal successors, (297), 243 states have internal predecessors, (297), 109 states have call successors, (109), 43 states have call predecessors, (109), 43 states have return successors, (109), 108 states have call predecessors, (109), 109 states have call successors, (109) Second operand has 4 states, 4 states have (on average 15.75) internal successors, (63), 4 states have internal predecessors, (63), 2 states have call successors, (30), 2 states have call predecessors, (30), 1 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2022-11-26 00:35:35,893 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:35:35,893 INFO L93 Difference]: Finished difference Result 726 states and 996 transitions. [2022-11-26 00:35:35,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-26 00:35:35,896 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.75) internal successors, (63), 4 states have internal predecessors, (63), 2 states have call successors, (30), 2 states have call predecessors, (30), 1 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) Word has length 127 [2022-11-26 00:35:35,898 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:35:35,927 INFO L225 Difference]: With dead ends: 726 [2022-11-26 00:35:35,928 INFO L226 Difference]: Without dead ends: 374 [2022-11-26 00:35:35,939 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-26 00:35:35,943 INFO L413 NwaCegarLoop]: 459 mSDtfsCounter, 6 mSDsluCounter, 912 mSDsCounter, 0 mSdLazyCounter, 161 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 1371 SdHoareTripleChecker+Invalid, 168 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 161 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-26 00:35:35,944 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 1371 Invalid, 168 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 161 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-26 00:35:35,969 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 374 states. [2022-11-26 00:35:36,068 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 374 to 374. [2022-11-26 00:35:36,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 374 states, 221 states have (on average 1.2895927601809956) internal successors, (285), 240 states have internal predecessors, (285), 109 states have call successors, (109), 43 states have call predecessors, (109), 43 states have return successors, (108), 107 states have call predecessors, (108), 108 states have call successors, (108) [2022-11-26 00:35:36,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 374 states to 374 states and 502 transitions. [2022-11-26 00:35:36,077 INFO L78 Accepts]: Start accepts. Automaton has 374 states and 502 transitions. Word has length 127 [2022-11-26 00:35:36,078 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:35:36,079 INFO L495 AbstractCegarLoop]: Abstraction has 374 states and 502 transitions. [2022-11-26 00:35:36,079 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.75) internal successors, (63), 4 states have internal predecessors, (63), 2 states have call successors, (30), 2 states have call predecessors, (30), 1 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2022-11-26 00:35:36,080 INFO L276 IsEmpty]: Start isEmpty. Operand 374 states and 502 transitions. [2022-11-26 00:35:36,088 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2022-11-26 00:35:36,088 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:35:36,089 INFO L195 NwaCegarLoop]: trace histogram [8, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 00:35:36,089 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-26 00:35:36,089 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting incoming__before__VerifyErr0ASSERT_VIOLATIONERROR_FUNCTION === [incoming__before__VerifyErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-26 00:35:36,090 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:35:36,090 INFO L85 PathProgramCache]: Analyzing trace with hash -1349484640, now seen corresponding path program 1 times [2022-11-26 00:35:36,091 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:35:36,091 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [465613811] [2022-11-26 00:35:36,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:35:36,091 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:35:36,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:35:36,318 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2022-11-26 00:35:36,318 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:35:36,318 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [465613811] [2022-11-26 00:35:36,319 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [465613811] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:35:36,319 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 00:35:36,319 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-26 00:35:36,320 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [502273175] [2022-11-26 00:35:36,320 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:35:36,321 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-26 00:35:36,322 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:35:36,323 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-26 00:35:36,323 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-26 00:35:36,323 INFO L87 Difference]: Start difference. First operand 374 states and 502 transitions. Second operand has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 2 states have call successors, (30), 2 states have call predecessors, (30), 1 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2022-11-26 00:35:36,536 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:35:36,537 INFO L93 Difference]: Finished difference Result 592 states and 780 transitions. [2022-11-26 00:35:36,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-26 00:35:36,537 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 2 states have call successors, (30), 2 states have call predecessors, (30), 1 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) Word has length 133 [2022-11-26 00:35:36,538 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:35:36,541 INFO L225 Difference]: With dead ends: 592 [2022-11-26 00:35:36,541 INFO L226 Difference]: Without dead ends: 376 [2022-11-26 00:35:36,543 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 [2022-11-26 00:35:36,544 INFO L413 NwaCegarLoop]: 451 mSDtfsCounter, 0 mSDsluCounter, 450 mSDsCounter, 0 mSdLazyCounter, 102 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 901 SdHoareTripleChecker+Invalid, 102 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 102 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-26 00:35:36,545 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 901 Invalid, 102 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 102 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-26 00:35:36,546 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 376 states. [2022-11-26 00:35:36,573 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 376 to 376. [2022-11-26 00:35:36,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 376 states, 223 states have (on average 1.2869955156950672) internal successors, (287), 242 states have internal predecessors, (287), 109 states have call successors, (109), 43 states have call predecessors, (109), 43 states have return successors, (108), 107 states have call predecessors, (108), 108 states have call successors, (108) [2022-11-26 00:35:36,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 376 states to 376 states and 504 transitions. [2022-11-26 00:35:36,578 INFO L78 Accepts]: Start accepts. Automaton has 376 states and 504 transitions. Word has length 133 [2022-11-26 00:35:36,578 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:35:36,579 INFO L495 AbstractCegarLoop]: Abstraction has 376 states and 504 transitions. [2022-11-26 00:35:36,579 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 2 states have call successors, (30), 2 states have call predecessors, (30), 1 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2022-11-26 00:35:36,579 INFO L276 IsEmpty]: Start isEmpty. Operand 376 states and 504 transitions. [2022-11-26 00:35:36,584 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2022-11-26 00:35:36,584 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:35:36,585 INFO L195 NwaCegarLoop]: trace histogram [8, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 00:35:36,585 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-26 00:35:36,585 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting incoming__before__VerifyErr0ASSERT_VIOLATIONERROR_FUNCTION === [incoming__before__VerifyErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-26 00:35:36,586 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:35:36,586 INFO L85 PathProgramCache]: Analyzing trace with hash 724788588, now seen corresponding path program 1 times [2022-11-26 00:35:36,586 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:35:36,586 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1279024935] [2022-11-26 00:35:36,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:35:36,587 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:35:36,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:35:36,731 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2022-11-26 00:35:36,732 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:35:36,732 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1279024935] [2022-11-26 00:35:36,732 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1279024935] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:35:36,732 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 00:35:36,733 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-26 00:35:36,733 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [529392737] [2022-11-26 00:35:36,733 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:35:36,734 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-26 00:35:36,734 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:35:36,735 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-26 00:35:36,735 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-26 00:35:36,735 INFO L87 Difference]: Start difference. First operand 376 states and 504 transitions. Second operand has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 2 states have call successors, (30), 2 states have call predecessors, (30), 1 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2022-11-26 00:35:36,956 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:35:36,957 INFO L93 Difference]: Finished difference Result 751 states and 1028 transitions. [2022-11-26 00:35:36,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-26 00:35:36,958 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 2 states have call successors, (30), 2 states have call predecessors, (30), 1 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) Word has length 138 [2022-11-26 00:35:36,961 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:35:36,967 INFO L225 Difference]: With dead ends: 751 [2022-11-26 00:35:36,967 INFO L226 Difference]: Without dead ends: 443 [2022-11-26 00:35:36,974 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 [2022-11-26 00:35:36,978 INFO L413 NwaCegarLoop]: 471 mSDtfsCounter, 84 mSDsluCounter, 442 mSDsCounter, 0 mSdLazyCounter, 103 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 102 SdHoareTripleChecker+Valid, 913 SdHoareTripleChecker+Invalid, 104 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 103 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-26 00:35:36,979 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [102 Valid, 913 Invalid, 104 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 103 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-26 00:35:36,981 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 443 states. [2022-11-26 00:35:37,025 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 443 to 438. [2022-11-26 00:35:37,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 438 states, 271 states have (on average 1.3431734317343174) internal successors, (364), 292 states have internal predecessors, (364), 123 states have call successors, (123), 43 states have call predecessors, (123), 43 states have return successors, (122), 121 states have call predecessors, (122), 122 states have call successors, (122) [2022-11-26 00:35:37,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 438 states to 438 states and 609 transitions. [2022-11-26 00:35:37,039 INFO L78 Accepts]: Start accepts. Automaton has 438 states and 609 transitions. Word has length 138 [2022-11-26 00:35:37,039 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:35:37,040 INFO L495 AbstractCegarLoop]: Abstraction has 438 states and 609 transitions. [2022-11-26 00:35:37,040 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 2 states have call successors, (30), 2 states have call predecessors, (30), 1 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2022-11-26 00:35:37,040 INFO L276 IsEmpty]: Start isEmpty. Operand 438 states and 609 transitions. [2022-11-26 00:35:37,051 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2022-11-26 00:35:37,051 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:35:37,052 INFO L195 NwaCegarLoop]: trace histogram [8, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 00:35:37,052 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-26 00:35:37,052 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting incoming__before__VerifyErr0ASSERT_VIOLATIONERROR_FUNCTION === [incoming__before__VerifyErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-26 00:35:37,053 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:35:37,053 INFO L85 PathProgramCache]: Analyzing trace with hash -1961562236, now seen corresponding path program 1 times [2022-11-26 00:35:37,053 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:35:37,053 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1241391294] [2022-11-26 00:35:37,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:35:37,054 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:35:37,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:35:37,323 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2022-11-26 00:35:37,324 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:35:37,324 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1241391294] [2022-11-26 00:35:37,324 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1241391294] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-26 00:35:37,324 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1028672891] [2022-11-26 00:35:37,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:35:37,326 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-26 00:35:37,326 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e303800-2c99-4fe1-9f4f-b5a9e01d4e24/bin/utaipan-ByfvJB40ur/z3 [2022-11-26 00:35:37,330 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e303800-2c99-4fe1-9f4f-b5a9e01d4e24/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-26 00:35:37,337 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e303800-2c99-4fe1-9f4f-b5a9e01d4e24/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-26 00:35:37,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:35:37,826 INFO L263 TraceCheckSpWp]: Trace formula consists of 1449 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-26 00:35:37,837 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-26 00:35:37,974 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2022-11-26 00:35:37,974 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-26 00:35:38,125 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2022-11-26 00:35:38,126 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1028672891] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-26 00:35:38,126 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1276748827] [2022-11-26 00:35:38,155 INFO L159 IcfgInterpreter]: Started Sifa with 116 locations of interest [2022-11-26 00:35:38,156 INFO L166 IcfgInterpreter]: Building call graph [2022-11-26 00:35:38,162 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-26 00:35:38,169 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-26 00:35:38,170 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-26 00:36:22,085 INFO L197 IcfgInterpreter]: Interpreting procedure setup_rjh__before__Keys with input of size 487 for LOIs [2022-11-26 00:36:23,364 INFO L197 IcfgInterpreter]: Interpreting procedure setup_bob__before__Keys with input of size 490 for LOIs [2022-11-26 00:36:25,180 INFO L197 IcfgInterpreter]: Interpreting procedure sendEmail with input of size 479 for LOIs [2022-11-26 00:37:10,225 INFO L197 IcfgInterpreter]: Interpreting procedure select_one with input of size 454 for LOIs [2022-11-26 00:37:10,545 INFO L197 IcfgInterpreter]: Interpreting procedure setup_chuck__before__Keys with input of size 487 for LOIs [2022-11-26 00:37:12,075 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 449 for LOIs [2022-11-26 00:37:12,431 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing with input of size 477 for LOIs [2022-11-26 00:37:13,521 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing__before__Sign with input of size 467 for LOIs [2022-11-26 00:37:14,579 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing__before__AddressBook with input of size 465 for LOIs [2022-11-26 00:37:15,645 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing__before__Encrypt with input of size 463 for LOIs [2022-11-26 00:37:22,307 INFO L197 IcfgInterpreter]: Interpreting procedure incoming__before__Decrypt with input of size 264 for LOIs [2022-11-26 00:37:22,463 INFO L197 IcfgInterpreter]: Interpreting procedure incoming__before__Verify with input of size 260 for LOIs [2022-11-26 00:37:23,299 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailTo with input of size 449 for LOIs [2022-11-26 00:37:23,703 INFO L197 IcfgInterpreter]: Interpreting procedure incoming__before__Forward with input of size 260 for LOIs [2022-11-26 00:37:24,372 INFO L197 IcfgInterpreter]: Interpreting procedure incoming__before__AutoResponder with input of size 247 for LOIs [2022-11-26 00:37:24,421 INFO L197 IcfgInterpreter]: Interpreting procedure getEmailTo with input of size 246 for LOIs [2022-11-26 00:37:24,471 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailFrom with input of size 443 for LOIs [2022-11-26 00:37:25,269 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-26 00:39:05,278 WARN L233 SmtUtils]: Spent 9.87s on a formula simplification. DAG size of input: 720 DAG size of output: 492 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-26 00:39:39,756 WARN L233 SmtUtils]: Spent 10.52s on a formula simplification. DAG size of input: 548 DAG size of output: 393 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-26 00:39:50,871 WARN L233 SmtUtils]: Spent 10.63s on a formula simplification. DAG size of input: 550 DAG size of output: 395 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-26 00:40:01,006 WARN L233 SmtUtils]: Spent 9.58s on a formula simplification. DAG size of input: 550 DAG size of output: 358 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-26 00:40:11,150 WARN L233 SmtUtils]: Spent 9.51s on a formula simplification. DAG size of input: 548 DAG size of output: 356 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-26 00:40:22,995 WARN L233 SmtUtils]: Spent 9.60s on a formula simplification. DAG size of input: 549 DAG size of output: 394 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-26 00:40:37,625 WARN L233 SmtUtils]: Spent 6.01s on a formula simplification. DAG size of input: 443 DAG size of output: 325 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-26 00:40:44,437 WARN L233 SmtUtils]: Spent 6.26s on a formula simplification. DAG size of input: 458 DAG size of output: 328 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-26 00:40:50,503 WARN L233 SmtUtils]: Spent 5.36s on a formula simplification. DAG size of input: 541 DAG size of output: 294 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-26 00:41:06,458 WARN L233 SmtUtils]: Spent 6.78s on a formula simplification. DAG size of input: 537 DAG size of output: 306 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-26 00:41:12,303 WARN L233 SmtUtils]: Spent 5.08s on a formula simplification. DAG size of input: 548 DAG size of output: 295 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-26 00:41:30,886 WARN L233 SmtUtils]: Spent 5.83s on a formula simplification. DAG size of input: 467 DAG size of output: 326 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-26 00:41:37,468 WARN L233 SmtUtils]: Spent 5.90s on a formula simplification. DAG size of input: 471 DAG size of output: 330 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-26 00:41:44,295 WARN L233 SmtUtils]: Spent 6.08s on a formula simplification. DAG size of input: 469 DAG size of output: 328 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-26 00:41:50,368 WARN L233 SmtUtils]: Spent 5.28s on a formula simplification. DAG size of input: 465 DAG size of output: 301 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-26 00:41:56,476 WARN L233 SmtUtils]: Spent 5.39s on a formula simplification. DAG size of input: 469 DAG size of output: 305 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-26 00:42:21,297 WARN L233 SmtUtils]: Spent 6.13s on a formula simplification. DAG size of input: 516 DAG size of output: 338 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-26 00:42:45,493 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [1276748827] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:42:45,493 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-11-26 00:42:45,493 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [84] imperfect sequences [4, 4, 4] total 90 [2022-11-26 00:42:45,494 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1293363226] [2022-11-26 00:42:45,495 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:42:45,495 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 85 states [2022-11-26 00:42:45,496 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:42:45,497 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 85 interpolants. [2022-11-26 00:42:45,501 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=322, Invalid=7688, Unknown=0, NotChecked=0, Total=8010 [2022-11-26 00:42:45,502 INFO L87 Difference]: Start difference. First operand 438 states and 609 transitions. Second operand has 85 states, 60 states have (on average 1.2333333333333334) internal successors, (74), 53 states have internal predecessors, (74), 28 states have call successors, (30), 18 states have call predecessors, (30), 11 states have return successors, (23), 21 states have call predecessors, (23), 21 states have call successors, (23) [2022-11-26 00:42:57,799 WARN L233 SmtUtils]: Spent 5.06s on a formula simplification. DAG size of input: 511 DAG size of output: 486 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-26 00:43:10,002 WARN L233 SmtUtils]: Spent 5.02s on a formula simplification. DAG size of input: 509 DAG size of output: 490 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-26 00:44:02,105 WARN L233 SmtUtils]: Spent 11.00s on a formula simplification. DAG size of input: 721 DAG size of output: 576 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-26 00:44:13,699 WARN L233 SmtUtils]: Spent 10.99s on a formula simplification. DAG size of input: 722 DAG size of output: 577 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-26 00:44:26,740 WARN L233 SmtUtils]: Spent 12.42s on a formula simplification. DAG size of input: 730 DAG size of output: 581 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-26 00:44:37,362 WARN L233 SmtUtils]: Spent 10.01s on a formula simplification. DAG size of input: 646 DAG size of output: 568 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-26 00:44:43,896 WARN L233 SmtUtils]: Spent 5.83s on a formula simplification. DAG size of input: 560 DAG size of output: 542 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-26 00:44:52,717 WARN L233 SmtUtils]: Spent 6.88s on a formula simplification. DAG size of input: 439 DAG size of output: 390 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-26 00:46:15,564 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:46:15,564 INFO L93 Difference]: Finished difference Result 1266 states and 1840 transitions. [2022-11-26 00:46:15,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 95 states. [2022-11-26 00:46:15,565 INFO L78 Accepts]: Start accepts. Automaton has has 85 states, 60 states have (on average 1.2333333333333334) internal successors, (74), 53 states have internal predecessors, (74), 28 states have call successors, (30), 18 states have call predecessors, (30), 11 states have return successors, (23), 21 states have call predecessors, (23), 21 states have call successors, (23) Word has length 139 [2022-11-26 00:46:15,566 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:46:15,571 INFO L225 Difference]: With dead ends: 1266 [2022-11-26 00:46:15,571 INFO L226 Difference]: Without dead ends: 849 [2022-11-26 00:46:15,576 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 436 GetRequests, 325 SyntacticMatches, 6 SemanticMatches, 105 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4413 ImplicationChecksByTransitivity, 430.6s TimeCoverageRelationStatistics Valid=468, Invalid=10874, Unknown=0, NotChecked=0, Total=11342 [2022-11-26 00:46:15,576 INFO L413 NwaCegarLoop]: 446 mSDtfsCounter, 557 mSDsluCounter, 11682 mSDsCounter, 0 mSdLazyCounter, 18787 mSolverCounterSat, 86 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 94.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 562 SdHoareTripleChecker+Valid, 12128 SdHoareTripleChecker+Invalid, 18873 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.6s SdHoareTripleChecker+Time, 86 IncrementalHoareTripleChecker+Valid, 18787 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 98.0s IncrementalHoareTripleChecker+Time [2022-11-26 00:46:15,577 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [562 Valid, 12128 Invalid, 18873 Unknown, 0 Unchecked, 0.6s Time], IncrementalHoareTripleChecker [86 Valid, 18787 Invalid, 0 Unknown, 0 Unchecked, 98.0s Time] [2022-11-26 00:46:15,579 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 849 states. [2022-11-26 00:46:15,906 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 849 to 682. [2022-11-26 00:46:15,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 682 states, 475 states have (on average 1.3621052631578947) internal successors, (647), 497 states have internal predecessors, (647), 143 states have call successors, (143), 66 states have call predecessors, (143), 63 states have return successors, (147), 137 states have call predecessors, (147), 142 states have call successors, (147) [2022-11-26 00:46:15,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 682 states to 682 states and 937 transitions. [2022-11-26 00:46:15,911 INFO L78 Accepts]: Start accepts. Automaton has 682 states and 937 transitions. Word has length 139 [2022-11-26 00:46:15,912 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:46:15,912 INFO L495 AbstractCegarLoop]: Abstraction has 682 states and 937 transitions. [2022-11-26 00:46:15,912 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 85 states, 60 states have (on average 1.2333333333333334) internal successors, (74), 53 states have internal predecessors, (74), 28 states have call successors, (30), 18 states have call predecessors, (30), 11 states have return successors, (23), 21 states have call predecessors, (23), 21 states have call successors, (23) [2022-11-26 00:46:15,913 INFO L276 IsEmpty]: Start isEmpty. Operand 682 states and 937 transitions. [2022-11-26 00:46:15,916 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2022-11-26 00:46:15,916 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:46:15,916 INFO L195 NwaCegarLoop]: trace histogram [8, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 00:46:15,923 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e303800-2c99-4fe1-9f4f-b5a9e01d4e24/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-11-26 00:46:16,117 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e303800-2c99-4fe1-9f4f-b5a9e01d4e24/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-26 00:46:16,117 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting incoming__before__VerifyErr0ASSERT_VIOLATIONERROR_FUNCTION === [incoming__before__VerifyErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-26 00:46:16,118 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:46:16,118 INFO L85 PathProgramCache]: Analyzing trace with hash -1087718300, now seen corresponding path program 1 times [2022-11-26 00:46:16,118 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:46:16,118 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [735232668] [2022-11-26 00:46:16,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:46:16,118 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:46:16,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:46:16,228 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2022-11-26 00:46:16,228 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:46:16,228 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [735232668] [2022-11-26 00:46:16,228 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [735232668] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:46:16,229 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 00:46:16,229 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-26 00:46:16,229 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [379952548] [2022-11-26 00:46:16,229 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:46:16,230 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-26 00:46:16,230 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:46:16,231 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-26 00:46:16,231 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-26 00:46:16,231 INFO L87 Difference]: Start difference. First operand 682 states and 937 transitions. Second operand has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 2 states have call successors, (30), 2 states have call predecessors, (30), 1 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2022-11-26 00:46:16,998 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:46:16,998 INFO L93 Difference]: Finished difference Result 1700 states and 2396 transitions. [2022-11-26 00:46:16,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-26 00:46:16,999 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 2 states have call successors, (30), 2 states have call predecessors, (30), 1 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) Word has length 141 [2022-11-26 00:46:16,999 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:46:17,015 INFO L225 Difference]: With dead ends: 1700 [2022-11-26 00:46:17,015 INFO L226 Difference]: Without dead ends: 1069 [2022-11-26 00:46:17,018 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 [2022-11-26 00:46:17,019 INFO L413 NwaCegarLoop]: 786 mSDtfsCounter, 468 mSDsluCounter, 413 mSDsCounter, 0 mSdLazyCounter, 145 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 468 SdHoareTripleChecker+Valid, 1199 SdHoareTripleChecker+Invalid, 150 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 145 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-26 00:46:17,021 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [468 Valid, 1199 Invalid, 150 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 145 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-26 00:46:17,025 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1069 states. [2022-11-26 00:46:17,577 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1069 to 1065. [2022-11-26 00:46:17,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1065 states, 711 states have (on average 1.3558368495077355) internal successors, (964), 750 states have internal predecessors, (964), 248 states have call successors, (248), 108 states have call predecessors, (248), 105 states have return successors, (271), 241 states have call predecessors, (271), 246 states have call successors, (271) [2022-11-26 00:46:17,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1065 states to 1065 states and 1483 transitions. [2022-11-26 00:46:17,586 INFO L78 Accepts]: Start accepts. Automaton has 1065 states and 1483 transitions. Word has length 141 [2022-11-26 00:46:17,586 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:46:17,586 INFO L495 AbstractCegarLoop]: Abstraction has 1065 states and 1483 transitions. [2022-11-26 00:46:17,587 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 2 states have call successors, (30), 2 states have call predecessors, (30), 1 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2022-11-26 00:46:17,587 INFO L276 IsEmpty]: Start isEmpty. Operand 1065 states and 1483 transitions. [2022-11-26 00:46:17,592 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2022-11-26 00:46:17,592 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:46:17,592 INFO L195 NwaCegarLoop]: trace histogram [8, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 00:46:17,592 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-26 00:46:17,593 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting incoming__before__VerifyErr0ASSERT_VIOLATIONERROR_FUNCTION === [incoming__before__VerifyErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-26 00:46:17,593 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:46:17,593 INFO L85 PathProgramCache]: Analyzing trace with hash 600468868, now seen corresponding path program 1 times [2022-11-26 00:46:17,594 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:46:17,594 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1755207745] [2022-11-26 00:46:17,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:46:17,594 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:46:17,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:46:17,702 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2022-11-26 00:46:17,703 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:46:17,703 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1755207745] [2022-11-26 00:46:17,703 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1755207745] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:46:17,703 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 00:46:17,704 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-26 00:46:17,704 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1634253258] [2022-11-26 00:46:17,704 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:46:17,704 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-26 00:46:17,705 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:46:17,705 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-26 00:46:17,706 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-26 00:46:17,706 INFO L87 Difference]: Start difference. First operand 1065 states and 1483 transitions. Second operand has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 2 states have call successors, (30), 2 states have call predecessors, (30), 1 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2022-11-26 00:46:18,586 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:46:18,587 INFO L93 Difference]: Finished difference Result 2845 states and 4052 transitions. [2022-11-26 00:46:18,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-26 00:46:18,587 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 2 states have call successors, (30), 2 states have call predecessors, (30), 1 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) Word has length 141 [2022-11-26 00:46:18,588 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:46:18,601 INFO L225 Difference]: With dead ends: 2845 [2022-11-26 00:46:18,601 INFO L226 Difference]: Without dead ends: 1820 [2022-11-26 00:46:18,606 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 [2022-11-26 00:46:18,609 INFO L413 NwaCegarLoop]: 837 mSDtfsCounter, 478 mSDsluCounter, 418 mSDsCounter, 0 mSdLazyCounter, 150 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 478 SdHoareTripleChecker+Valid, 1255 SdHoareTripleChecker+Invalid, 152 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 150 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-26 00:46:18,610 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [478 Valid, 1255 Invalid, 152 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 150 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-26 00:46:18,613 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1820 states. [2022-11-26 00:46:19,280 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1820 to 1818. [2022-11-26 00:46:19,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1818 states, 1178 states have (on average 1.3497453310696095) internal successors, (1590), 1248 states have internal predecessors, (1590), 451 states have call successors, (451), 191 states have call predecessors, (451), 188 states have return successors, (519), 441 states have call predecessors, (519), 447 states have call successors, (519) [2022-11-26 00:46:19,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1818 states to 1818 states and 2560 transitions. [2022-11-26 00:46:19,297 INFO L78 Accepts]: Start accepts. Automaton has 1818 states and 2560 transitions. Word has length 141 [2022-11-26 00:46:19,297 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:46:19,298 INFO L495 AbstractCegarLoop]: Abstraction has 1818 states and 2560 transitions. [2022-11-26 00:46:19,302 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 2 states have call successors, (30), 2 states have call predecessors, (30), 1 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2022-11-26 00:46:19,302 INFO L276 IsEmpty]: Start isEmpty. Operand 1818 states and 2560 transitions. [2022-11-26 00:46:19,310 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2022-11-26 00:46:19,310 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:46:19,310 INFO L195 NwaCegarLoop]: trace histogram [8, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 00:46:19,310 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-26 00:46:19,311 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting incoming__before__VerifyErr0ASSERT_VIOLATIONERROR_FUNCTION === [incoming__before__VerifyErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-26 00:46:19,311 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:46:19,311 INFO L85 PathProgramCache]: Analyzing trace with hash 1977659173, now seen corresponding path program 1 times [2022-11-26 00:46:19,311 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:46:19,312 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [783199965] [2022-11-26 00:46:19,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:46:19,312 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:46:19,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:46:19,430 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2022-11-26 00:46:19,431 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:46:19,433 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [783199965] [2022-11-26 00:46:19,434 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [783199965] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:46:19,434 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 00:46:19,434 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-26 00:46:19,434 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1790947558] [2022-11-26 00:46:19,434 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:46:19,435 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-26 00:46:19,435 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:46:19,436 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-26 00:46:19,436 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-26 00:46:19,437 INFO L87 Difference]: Start difference. First operand 1818 states and 2560 transitions. Second operand has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 3 states have call successors, (31), 2 states have call predecessors, (31), 1 states have return successors, (24), 3 states have call predecessors, (24), 3 states have call successors, (24) [2022-11-26 00:46:20,471 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:46:20,471 INFO L93 Difference]: Finished difference Result 4566 states and 6436 transitions. [2022-11-26 00:46:20,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-26 00:46:20,472 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 3 states have call successors, (31), 2 states have call predecessors, (31), 1 states have return successors, (24), 3 states have call predecessors, (24), 3 states have call successors, (24) Word has length 143 [2022-11-26 00:46:20,472 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:46:20,489 INFO L225 Difference]: With dead ends: 4566 [2022-11-26 00:46:20,489 INFO L226 Difference]: Without dead ends: 3060 [2022-11-26 00:46:20,496 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 [2022-11-26 00:46:20,497 INFO L413 NwaCegarLoop]: 758 mSDtfsCounter, 434 mSDsluCounter, 363 mSDsCounter, 0 mSdLazyCounter, 158 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 434 SdHoareTripleChecker+Valid, 1121 SdHoareTripleChecker+Invalid, 180 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 158 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-26 00:46:20,497 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [434 Valid, 1121 Invalid, 180 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 158 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-26 00:46:20,501 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3060 states. [2022-11-26 00:46:21,263 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3060 to 3056. [2022-11-26 00:46:21,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3056 states, 2010 states have (on average 1.3343283582089551) internal successors, (2682), 2095 states have internal predecessors, (2682), 718 states have call successors, (718), 330 states have call predecessors, (718), 327 states have return successors, (836), 702 states have call predecessors, (836), 710 states have call successors, (836) [2022-11-26 00:46:21,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3056 states to 3056 states and 4236 transitions. [2022-11-26 00:46:21,288 INFO L78 Accepts]: Start accepts. Automaton has 3056 states and 4236 transitions. Word has length 143 [2022-11-26 00:46:21,289 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:46:21,289 INFO L495 AbstractCegarLoop]: Abstraction has 3056 states and 4236 transitions. [2022-11-26 00:46:21,289 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 3 states have call successors, (31), 2 states have call predecessors, (31), 1 states have return successors, (24), 3 states have call predecessors, (24), 3 states have call successors, (24) [2022-11-26 00:46:21,289 INFO L276 IsEmpty]: Start isEmpty. Operand 3056 states and 4236 transitions. [2022-11-26 00:46:21,299 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2022-11-26 00:46:21,300 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:46:21,300 INFO L195 NwaCegarLoop]: trace histogram [8, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 00:46:21,300 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-26 00:46:21,300 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting incoming__before__VerifyErr0ASSERT_VIOLATIONERROR_FUNCTION === [incoming__before__VerifyErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-26 00:46:21,301 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:46:21,301 INFO L85 PathProgramCache]: Analyzing trace with hash -1546409337, now seen corresponding path program 1 times [2022-11-26 00:46:21,301 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:46:21,301 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [654192718] [2022-11-26 00:46:21,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:46:21,302 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:46:21,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:46:21,482 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2022-11-26 00:46:21,482 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:46:21,482 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [654192718] [2022-11-26 00:46:21,483 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [654192718] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-26 00:46:21,483 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [836716424] [2022-11-26 00:46:21,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:46:21,483 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-26 00:46:21,483 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e303800-2c99-4fe1-9f4f-b5a9e01d4e24/bin/utaipan-ByfvJB40ur/z3 [2022-11-26 00:46:21,485 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e303800-2c99-4fe1-9f4f-b5a9e01d4e24/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-26 00:46:21,488 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e303800-2c99-4fe1-9f4f-b5a9e01d4e24/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-26 00:46:21,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:46:21,933 INFO L263 TraceCheckSpWp]: Trace formula consists of 1473 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-26 00:46:21,940 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-26 00:46:21,981 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2022-11-26 00:46:21,983 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-26 00:46:22,105 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2022-11-26 00:46:22,106 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [836716424] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-26 00:46:22,106 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [732339490] [2022-11-26 00:46:22,118 INFO L159 IcfgInterpreter]: Started Sifa with 121 locations of interest [2022-11-26 00:46:22,118 INFO L166 IcfgInterpreter]: Building call graph [2022-11-26 00:46:22,119 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-26 00:46:22,119 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-26 00:46:22,120 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-26 00:46:53,883 INFO L197 IcfgInterpreter]: Interpreting procedure setup_rjh__before__Keys with input of size 487 for LOIs [2022-11-26 00:46:54,927 INFO L197 IcfgInterpreter]: Interpreting procedure setup_bob__before__Keys with input of size 490 for LOIs [2022-11-26 00:46:56,247 INFO L197 IcfgInterpreter]: Interpreting procedure sendEmail with input of size 479 for LOIs [2022-11-26 00:47:32,956 INFO L197 IcfgInterpreter]: Interpreting procedure select_one with input of size 454 for LOIs [2022-11-26 00:47:33,227 INFO L197 IcfgInterpreter]: Interpreting procedure setup_chuck__before__Keys with input of size 487 for LOIs [2022-11-26 00:47:34,515 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 457 for LOIs [2022-11-26 00:47:34,810 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing with input of size 477 for LOIs [2022-11-26 00:47:35,695 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing__before__Sign with input of size 467 for LOIs [2022-11-26 00:47:39,641 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing__before__AddressBook with input of size 274 for LOIs [2022-11-26 00:47:39,791 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing__before__Encrypt with input of size 274 for LOIs [2022-11-26 00:47:42,073 INFO L197 IcfgInterpreter]: Interpreting procedure incoming__before__Decrypt with input of size 266 for LOIs [2022-11-26 00:47:42,202 INFO L197 IcfgInterpreter]: Interpreting procedure incoming__before__Verify with input of size 262 for LOIs [2022-11-26 00:47:42,907 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailTo with input of size 449 for LOIs [2022-11-26 00:47:43,181 INFO L197 IcfgInterpreter]: Interpreting procedure incoming__before__Forward with input of size 262 for LOIs [2022-11-26 00:47:43,739 INFO L197 IcfgInterpreter]: Interpreting procedure incoming__before__AutoResponder with input of size 249 for LOIs [2022-11-26 00:47:43,776 INFO L197 IcfgInterpreter]: Interpreting procedure getEmailTo with input of size 248 for LOIs [2022-11-26 00:47:43,816 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailFrom with input of size 449 for LOIs [2022-11-26 00:47:44,457 INFO L197 IcfgInterpreter]: Interpreting procedure getClientAddressBookSize with input of size 437 for LOIs [2022-11-26 00:47:44,729 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-26 00:49:00,449 WARN L233 SmtUtils]: Spent 5.56s on a formula simplification. DAG size of input: 457 DAG size of output: 278 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate)