./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/email_spec11_product20.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e04fb08f Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f2ec80c-160a-45e0-8e66-1e4a6139da16/bin/utaipan-Xvt2sAort0/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f2ec80c-160a-45e0-8e66-1e4a6139da16/bin/utaipan-Xvt2sAort0/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f2ec80c-160a-45e0-8e66-1e4a6139da16/bin/utaipan-Xvt2sAort0/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f2ec80c-160a-45e0-8e66-1e4a6139da16/bin/utaipan-Xvt2sAort0/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/email_spec11_product20.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f2ec80c-160a-45e0-8e66-1e4a6139da16/bin/utaipan-Xvt2sAort0/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f2ec80c-160a-45e0-8e66-1e4a6139da16/bin/utaipan-Xvt2sAort0 --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 b9d5581bc5c458c0b8250652569dd3286beeda44b685a7a0cdda121612582c0c --- 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-e04fb08 [2022-11-16 16:10:19,845 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-16 16:10:19,847 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-16 16:10:19,872 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-16 16:10:19,873 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-16 16:10:19,874 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-16 16:10:19,876 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-16 16:10:19,878 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-16 16:10:19,880 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-16 16:10:19,882 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-16 16:10:19,883 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-16 16:10:19,885 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-16 16:10:19,885 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-16 16:10:19,886 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-16 16:10:19,888 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-16 16:10:19,890 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-16 16:10:19,891 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-16 16:10:19,892 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-16 16:10:19,894 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-16 16:10:19,897 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-16 16:10:19,899 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-16 16:10:19,917 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-16 16:10:19,918 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-16 16:10:19,919 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-16 16:10:19,923 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-16 16:10:19,924 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-16 16:10:19,924 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-16 16:10:19,925 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-16 16:10:19,926 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-16 16:10:19,934 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-16 16:10:19,935 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-16 16:10:19,936 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-16 16:10:19,937 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-16 16:10:19,938 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-16 16:10:19,939 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-16 16:10:19,939 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-16 16:10:19,940 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-16 16:10:19,941 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-16 16:10:19,943 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-16 16:10:19,945 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-16 16:10:19,946 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-16 16:10:19,948 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f2ec80c-160a-45e0-8e66-1e4a6139da16/bin/utaipan-Xvt2sAort0/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-11-16 16:10:19,987 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-16 16:10:19,988 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-16 16:10:19,988 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-16 16:10:19,988 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-16 16:10:19,989 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-16 16:10:19,989 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-16 16:10:19,989 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-16 16:10:19,990 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-16 16:10:19,990 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-16 16:10:19,990 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-16 16:10:20,000 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-16 16:10:20,001 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-16 16:10:20,001 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-16 16:10:20,001 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-16 16:10:20,001 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-16 16:10:20,002 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-16 16:10:20,002 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-16 16:10:20,002 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-16 16:10:20,003 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-16 16:10:20,003 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-16 16:10:20,003 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-16 16:10:20,003 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-16 16:10:20,004 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-16 16:10:20,004 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-16 16:10:20,004 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-16 16:10:20,005 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-16 16:10:20,005 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-16 16:10:20,005 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-16 16:10:20,005 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-16 16:10:20,005 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-16 16:10:20,006 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-16 16:10:20,006 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-16 16:10:20,006 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 16:10:20,007 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-16 16:10:20,007 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-16 16:10:20,007 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-16 16:10:20,007 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-16 16:10:20,007 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-16 16:10:20,008 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-16 16:10:20,008 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-16 16:10:20,008 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-16 16:10:20,008 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_9f2ec80c-160a-45e0-8e66-1e4a6139da16/bin/utaipan-Xvt2sAort0/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f2ec80c-160a-45e0-8e66-1e4a6139da16/bin/utaipan-Xvt2sAort0 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b9d5581bc5c458c0b8250652569dd3286beeda44b685a7a0cdda121612582c0c [2022-11-16 16:10:20,338 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-16 16:10:20,376 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-16 16:10:20,379 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-16 16:10:20,381 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-16 16:10:20,382 INFO L275 PluginConnector]: CDTParser initialized [2022-11-16 16:10:20,383 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f2ec80c-160a-45e0-8e66-1e4a6139da16/bin/utaipan-Xvt2sAort0/../../sv-benchmarks/c/product-lines/email_spec11_product20.cil.c [2022-11-16 16:10:20,472 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f2ec80c-160a-45e0-8e66-1e4a6139da16/bin/utaipan-Xvt2sAort0/data/76b7285ab/ebbeb95d35a546bc95c1fda4ba3b82c0/FLAG8a9eba127 [2022-11-16 16:10:21,151 INFO L306 CDTParser]: Found 1 translation units. [2022-11-16 16:10:21,152 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f2ec80c-160a-45e0-8e66-1e4a6139da16/sv-benchmarks/c/product-lines/email_spec11_product20.cil.c [2022-11-16 16:10:21,186 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f2ec80c-160a-45e0-8e66-1e4a6139da16/bin/utaipan-Xvt2sAort0/data/76b7285ab/ebbeb95d35a546bc95c1fda4ba3b82c0/FLAG8a9eba127 [2022-11-16 16:10:21,323 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f2ec80c-160a-45e0-8e66-1e4a6139da16/bin/utaipan-Xvt2sAort0/data/76b7285ab/ebbeb95d35a546bc95c1fda4ba3b82c0 [2022-11-16 16:10:21,326 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-16 16:10:21,327 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-16 16:10:21,329 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-16 16:10:21,330 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-16 16:10:21,334 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-16 16:10:21,335 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 04:10:21" (1/1) ... [2022-11-16 16:10:21,337 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@58fc9e1d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:10:21, skipping insertion in model container [2022-11-16 16:10:21,337 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 04:10:21" (1/1) ... [2022-11-16 16:10:21,351 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-16 16:10:21,421 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-16 16:10:21,661 WARN L229 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_9f2ec80c-160a-45e0-8e66-1e4a6139da16/sv-benchmarks/c/product-lines/email_spec11_product20.cil.c[1543,1556] [2022-11-16 16:10:22,156 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 16:10:22,169 INFO L203 MainTranslator]: Completed pre-run [2022-11-16 16:10:22,183 WARN L229 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_9f2ec80c-160a-45e0-8e66-1e4a6139da16/sv-benchmarks/c/product-lines/email_spec11_product20.cil.c[1543,1556] [2022-11-16 16:10:22,286 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 16:10:22,322 INFO L208 MainTranslator]: Completed translation [2022-11-16 16:10:22,323 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:10:22 WrapperNode [2022-11-16 16:10:22,323 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-16 16:10:22,324 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-16 16:10:22,324 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-16 16:10:22,325 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-16 16:10:22,334 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:10:22" (1/1) ... [2022-11-16 16:10:22,379 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:10:22" (1/1) ... [2022-11-16 16:10:22,471 INFO L138 Inliner]: procedures = 128, calls = 214, calls flagged for inlining = 54, calls inlined = 49, statements flattened = 973 [2022-11-16 16:10:22,472 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-16 16:10:22,473 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-16 16:10:22,473 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-16 16:10:22,473 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-16 16:10:22,484 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:10:22" (1/1) ... [2022-11-16 16:10:22,485 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:10:22" (1/1) ... [2022-11-16 16:10:22,491 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:10:22" (1/1) ... [2022-11-16 16:10:22,491 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:10:22" (1/1) ... [2022-11-16 16:10:22,511 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:10:22" (1/1) ... [2022-11-16 16:10:22,522 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:10:22" (1/1) ... [2022-11-16 16:10:22,529 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:10:22" (1/1) ... [2022-11-16 16:10:22,547 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:10:22" (1/1) ... [2022-11-16 16:10:22,555 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-16 16:10:22,571 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-16 16:10:22,571 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-16 16:10:22,572 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-16 16:10:22,573 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:10:22" (1/1) ... [2022-11-16 16:10:22,582 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 16:10:22,596 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f2ec80c-160a-45e0-8e66-1e4a6139da16/bin/utaipan-Xvt2sAort0/z3 [2022-11-16 16:10:22,612 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f2ec80c-160a-45e0-8e66-1e4a6139da16/bin/utaipan-Xvt2sAort0/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-16 16:10:22,626 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f2ec80c-160a-45e0-8e66-1e4a6139da16/bin/utaipan-Xvt2sAort0/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-16 16:10:22,676 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookSize [2022-11-16 16:10:22,677 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookSize [2022-11-16 16:10:22,678 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailEncryptionKey [2022-11-16 16:10:22,678 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailEncryptionKey [2022-11-16 16:10:22,679 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookAddress [2022-11-16 16:10:22,679 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookAddress [2022-11-16 16:10:22,679 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailEncryptionKey [2022-11-16 16:10:22,680 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailEncryptionKey [2022-11-16 16:10:22,680 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2022-11-16 16:10:22,680 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2022-11-16 16:10:22,680 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing__wrappee__AutoResponder [2022-11-16 16:10:22,681 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing__wrappee__AutoResponder [2022-11-16 16:10:22,681 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2022-11-16 16:10:22,681 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2022-11-16 16:10:22,681 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable [2022-11-16 16:10:22,681 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable [2022-11-16 16:10:22,682 INFO L130 BoogieDeclarations]: Found specification of procedure createClientKeyringEntry [2022-11-16 16:10:22,682 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientKeyringEntry [2022-11-16 16:10:22,682 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsEncrypted [2022-11-16 16:10:22,682 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsEncrypted [2022-11-16 16:10:22,683 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAdd [2022-11-16 16:10:22,683 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAdd [2022-11-16 16:10:22,683 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2022-11-16 16:10:22,683 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailFrom [2022-11-16 16:10:22,684 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailFrom [2022-11-16 16:10:22,684 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2022-11-16 16:10:22,684 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2022-11-16 16:10:22,685 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-16 16:10:22,685 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookSize [2022-11-16 16:10:22,685 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookSize [2022-11-16 16:10:22,688 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringUser [2022-11-16 16:10:22,688 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringUser [2022-11-16 16:10:22,688 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringPublicKey [2022-11-16 16:10:22,688 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringPublicKey [2022-11-16 16:10:22,689 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2022-11-16 16:10:22,689 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2022-11-16 16:10:22,690 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2022-11-16 16:10:22,690 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2022-11-16 16:10:22,690 INFO L130 BoogieDeclarations]: Found specification of procedure isEncrypted [2022-11-16 16:10:22,690 INFO L138 BoogieDeclarations]: Found implementation of procedure isEncrypted [2022-11-16 16:10:22,690 INFO L130 BoogieDeclarations]: Found specification of procedure setClientPrivateKey [2022-11-16 16:10:22,691 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientPrivateKey [2022-11-16 16:10:22,691 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailTo [2022-11-16 16:10:22,692 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailTo [2022-11-16 16:10:22,692 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-16 16:10:22,693 INFO L130 BoogieDeclarations]: Found specification of procedure generateKeyPair [2022-11-16 16:10:22,694 INFO L138 BoogieDeclarations]: Found implementation of procedure generateKeyPair [2022-11-16 16:10:22,694 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookAddress [2022-11-16 16:10:22,696 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookAddress [2022-11-16 16:10:22,697 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-16 16:10:22,697 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-16 16:10:22,991 INFO L235 CfgBuilder]: Building ICFG [2022-11-16 16:10:22,994 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-16 16:10:24,111 INFO L276 CfgBuilder]: Performing block encoding [2022-11-16 16:10:24,839 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-16 16:10:24,840 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-16 16:10:24,844 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 04:10:24 BoogieIcfgContainer [2022-11-16 16:10:24,844 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-16 16:10:24,851 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-16 16:10:24,851 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-16 16:10:24,856 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-16 16:10:24,856 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 04:10:21" (1/3) ... [2022-11-16 16:10:24,857 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4021152 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 04:10:24, skipping insertion in model container [2022-11-16 16:10:24,857 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:10:22" (2/3) ... [2022-11-16 16:10:24,858 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4021152 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 04:10:24, skipping insertion in model container [2022-11-16 16:10:24,858 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 04:10:24" (3/3) ... [2022-11-16 16:10:24,860 INFO L112 eAbstractionObserver]: Analyzing ICFG email_spec11_product20.cil.c [2022-11-16 16:10:24,888 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-16 16:10:24,888 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-16 16:10:24,996 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-16 16:10:25,009 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;@3d28222b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-16 16:10:25,009 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-16 16:10:25,016 INFO L276 IsEmpty]: Start isEmpty. Operand has 182 states, 103 states have (on average 1.3300970873786409) internal successors, (137), 108 states have internal predecessors, (137), 54 states have call successors, (54), 23 states have call predecessors, (54), 23 states have return successors, (54), 53 states have call predecessors, (54), 54 states have call successors, (54) [2022-11-16 16:10:25,044 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2022-11-16 16:10:25,044 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 16:10:25,045 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 16:10:25,046 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 16:10:25,051 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 16:10:25,052 INFO L85 PathProgramCache]: Analyzing trace with hash -907500454, now seen corresponding path program 1 times [2022-11-16 16:10:25,066 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 16:10:25,067 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [759004312] [2022-11-16 16:10:25,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 16:10:25,068 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 16:10:25,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 16:10:25,444 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-16 16:10:25,445 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 16:10:25,445 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [759004312] [2022-11-16 16:10:25,446 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [759004312] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 16:10:25,446 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 16:10:25,447 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-16 16:10:25,448 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [50233169] [2022-11-16 16:10:25,449 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 16:10:25,455 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-16 16:10:25,455 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 16:10:25,487 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-16 16:10:25,488 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-16 16:10:25,491 INFO L87 Difference]: Start difference. First operand has 182 states, 103 states have (on average 1.3300970873786409) internal successors, (137), 108 states have internal predecessors, (137), 54 states have call successors, (54), 23 states have call predecessors, (54), 23 states have return successors, (54), 53 states have call predecessors, (54), 54 states have call successors, (54) Second operand has 2 states, 2 states have (on average 18.0) internal successors, (36), 2 states have internal predecessors, (36), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-11-16 16:10:25,698 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 16:10:25,701 INFO L93 Difference]: Finished difference Result 272 states and 361 transitions. [2022-11-16 16:10:25,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-16 16:10:25,704 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 18.0) internal successors, (36), 2 states have internal predecessors, (36), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 73 [2022-11-16 16:10:25,705 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 16:10:25,729 INFO L225 Difference]: With dead ends: 272 [2022-11-16 16:10:25,729 INFO L226 Difference]: Without dead ends: 179 [2022-11-16 16:10:25,763 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-16 16:10:25,769 INFO L413 NwaCegarLoop]: 206 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 206 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 16:10:25,772 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 206 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-16 16:10:25,794 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179 states. [2022-11-16 16:10:25,864 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179 to 179. [2022-11-16 16:10:25,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 179 states, 101 states have (on average 1.297029702970297) internal successors, (131), 105 states have internal predecessors, (131), 54 states have call successors, (54), 23 states have call predecessors, (54), 23 states have return successors, (53), 52 states have call predecessors, (53), 53 states have call successors, (53) [2022-11-16 16:10:25,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 179 states to 179 states and 238 transitions. [2022-11-16 16:10:25,878 INFO L78 Accepts]: Start accepts. Automaton has 179 states and 238 transitions. Word has length 73 [2022-11-16 16:10:25,882 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 16:10:25,883 INFO L495 AbstractCegarLoop]: Abstraction has 179 states and 238 transitions. [2022-11-16 16:10:25,884 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 18.0) internal successors, (36), 2 states have internal predecessors, (36), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-11-16 16:10:25,885 INFO L276 IsEmpty]: Start isEmpty. Operand 179 states and 238 transitions. [2022-11-16 16:10:25,889 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-11-16 16:10:25,889 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 16:10:25,889 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 16:10:25,890 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-16 16:10:25,890 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 16:10:25,890 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 16:10:25,891 INFO L85 PathProgramCache]: Analyzing trace with hash 1076798138, now seen corresponding path program 1 times [2022-11-16 16:10:25,891 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 16:10:25,891 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [776273979] [2022-11-16 16:10:25,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 16:10:25,892 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 16:10:25,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 16:10:26,200 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-16 16:10:26,201 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 16:10:26,201 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [776273979] [2022-11-16 16:10:26,201 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [776273979] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 16:10:26,202 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 16:10:26,202 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 16:10:26,202 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1714327259] [2022-11-16 16:10:26,203 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 16:10:26,204 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 16:10:26,205 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 16:10:26,205 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 16:10:26,206 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 16:10:26,206 INFO L87 Difference]: Start difference. First operand 179 states and 238 transitions. Second operand has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-11-16 16:10:26,398 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 16:10:26,398 INFO L93 Difference]: Finished difference Result 268 states and 346 transitions. [2022-11-16 16:10:26,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 16:10:26,401 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 74 [2022-11-16 16:10:26,401 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 16:10:26,408 INFO L225 Difference]: With dead ends: 268 [2022-11-16 16:10:26,409 INFO L226 Difference]: Without dead ends: 181 [2022-11-16 16:10:26,411 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 [2022-11-16 16:10:26,416 INFO L413 NwaCegarLoop]: 203 mSDtfsCounter, 0 mSDsluCounter, 202 mSDsCounter, 0 mSdLazyCounter, 70 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 405 SdHoareTripleChecker+Invalid, 70 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 70 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 16:10:26,419 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 405 Invalid, 70 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 70 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-16 16:10:26,420 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 181 states. [2022-11-16 16:10:26,443 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 181 to 181. [2022-11-16 16:10:26,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 181 states, 103 states have (on average 1.2912621359223302) internal successors, (133), 107 states have internal predecessors, (133), 54 states have call successors, (54), 23 states have call predecessors, (54), 23 states have return successors, (53), 52 states have call predecessors, (53), 53 states have call successors, (53) [2022-11-16 16:10:26,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 181 states to 181 states and 240 transitions. [2022-11-16 16:10:26,452 INFO L78 Accepts]: Start accepts. Automaton has 181 states and 240 transitions. Word has length 74 [2022-11-16 16:10:26,453 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 16:10:26,455 INFO L495 AbstractCegarLoop]: Abstraction has 181 states and 240 transitions. [2022-11-16 16:10:26,456 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-11-16 16:10:26,456 INFO L276 IsEmpty]: Start isEmpty. Operand 181 states and 240 transitions. [2022-11-16 16:10:26,464 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-11-16 16:10:26,464 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 16:10:26,465 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 16:10:26,466 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-16 16:10:26,467 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 16:10:26,473 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 16:10:26,474 INFO L85 PathProgramCache]: Analyzing trace with hash 908099707, now seen corresponding path program 1 times [2022-11-16 16:10:26,474 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 16:10:26,474 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2132342490] [2022-11-16 16:10:26,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 16:10:26,475 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 16:10:26,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 16:10:26,733 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-16 16:10:26,734 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 16:10:26,734 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2132342490] [2022-11-16 16:10:26,734 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2132342490] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 16:10:26,735 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 16:10:26,735 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 16:10:26,735 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [628452829] [2022-11-16 16:10:26,735 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 16:10:26,736 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 16:10:26,736 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 16:10:26,737 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 16:10:26,737 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 16:10:26,737 INFO L87 Difference]: Start difference. First operand 181 states and 240 transitions. Second operand has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-11-16 16:10:26,908 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 16:10:26,908 INFO L93 Difference]: Finished difference Result 397 states and 547 transitions. [2022-11-16 16:10:26,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 16:10:26,909 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 79 [2022-11-16 16:10:26,910 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 16:10:26,912 INFO L225 Difference]: With dead ends: 397 [2022-11-16 16:10:26,912 INFO L226 Difference]: Without dead ends: 234 [2022-11-16 16:10:26,914 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 [2022-11-16 16:10:26,915 INFO L413 NwaCegarLoop]: 222 mSDtfsCounter, 59 mSDsluCounter, 196 mSDsCounter, 0 mSdLazyCounter, 71 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 77 SdHoareTripleChecker+Valid, 418 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 71 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 16:10:26,916 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [77 Valid, 418 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 71 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-16 16:10:26,917 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 234 states. [2022-11-16 16:10:26,940 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 234 to 229. [2022-11-16 16:10:26,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 229 states, 137 states have (on average 1.3722627737226278) internal successors, (188), 141 states have internal predecessors, (188), 68 states have call successors, (68), 23 states have call predecessors, (68), 23 states have return successors, (67), 66 states have call predecessors, (67), 67 states have call successors, (67) [2022-11-16 16:10:26,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 229 states to 229 states and 323 transitions. [2022-11-16 16:10:26,954 INFO L78 Accepts]: Start accepts. Automaton has 229 states and 323 transitions. Word has length 79 [2022-11-16 16:10:26,956 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 16:10:26,957 INFO L495 AbstractCegarLoop]: Abstraction has 229 states and 323 transitions. [2022-11-16 16:10:26,957 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-11-16 16:10:26,957 INFO L276 IsEmpty]: Start isEmpty. Operand 229 states and 323 transitions. [2022-11-16 16:10:26,963 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2022-11-16 16:10:26,964 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 16:10:26,964 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 16:10:26,964 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-16 16:10:26,965 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 16:10:26,968 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 16:10:26,968 INFO L85 PathProgramCache]: Analyzing trace with hash 889440703, now seen corresponding path program 1 times [2022-11-16 16:10:26,969 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 16:10:26,969 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [403542546] [2022-11-16 16:10:26,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 16:10:26,969 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 16:10:27,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 16:10:27,221 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-16 16:10:27,221 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 16:10:27,221 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [403542546] [2022-11-16 16:10:27,222 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [403542546] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 16:10:27,222 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [333396966] [2022-11-16 16:10:27,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 16:10:27,222 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 16:10:27,223 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f2ec80c-160a-45e0-8e66-1e4a6139da16/bin/utaipan-Xvt2sAort0/z3 [2022-11-16 16:10:27,227 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f2ec80c-160a-45e0-8e66-1e4a6139da16/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 16:10:27,250 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f2ec80c-160a-45e0-8e66-1e4a6139da16/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-16 16:10:27,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 16:10:27,636 INFO L263 TraceCheckSpWp]: Trace formula consists of 1076 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-16 16:10:27,649 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 16:10:27,738 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-16 16:10:27,740 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 16:10:27,854 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-16 16:10:27,854 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [333396966] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 16:10:27,855 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1861495774] [2022-11-16 16:10:27,886 INFO L159 IcfgInterpreter]: Started Sifa with 67 locations of interest [2022-11-16 16:10:27,891 INFO L166 IcfgInterpreter]: Building call graph [2022-11-16 16:10:27,898 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-16 16:10:27,905 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-16 16:10:27,909 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-16 16:11:09,403 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 439 for LOIs [2022-11-16 16:11:09,804 INFO L197 IcfgInterpreter]: Interpreting procedure setClientPrivateKey with input of size 441 for LOIs [2022-11-16 16:11:10,191 INFO L197 IcfgInterpreter]: Interpreting procedure sendEmail with input of size 255 for LOIs [2022-11-16 16:11:12,558 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailTo with input of size 237 for LOIs [2022-11-16 16:11:12,634 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing with input of size 257 for LOIs [2022-11-16 16:11:13,768 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing__wrappee__AutoResponder with input of size 264 for LOIs [2022-11-16 16:11:24,687 INFO L197 IcfgInterpreter]: Interpreting procedure isReadable with input of size 248 for LOIs [2022-11-16 16:11:25,648 INFO L197 IcfgInterpreter]: Interpreting procedure isEncrypted with input of size 248 for LOIs [2022-11-16 16:11:25,699 INFO L197 IcfgInterpreter]: Interpreting procedure getEmailTo with input of size 436 for LOIs [2022-11-16 16:11:26,504 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailFrom with input of size 469 for LOIs [2022-11-16 16:11:32,872 INFO L197 IcfgInterpreter]: Interpreting procedure getClientAddressBookSize with input of size 229 for LOIs [2022-11-16 16:11:32,912 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-16 16:12:12,716 WARN L233 SmtUtils]: Spent 6.53s on a formula simplification. DAG size of input: 476 DAG size of output: 340 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-16 16:12:20,386 WARN L233 SmtUtils]: Spent 6.51s on a formula simplification. DAG size of input: 486 DAG size of output: 332 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-16 16:12:33,298 WARN L233 SmtUtils]: Spent 7.31s on a formula simplification. DAG size of input: 508 DAG size of output: 354 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-16 16:12:49,483 WARN L233 SmtUtils]: Spent 15.84s on a formula simplification. DAG size of input: 583 DAG size of output: 415 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-16 16:13:12,238 WARN L233 SmtUtils]: Spent 13.27s on a formula simplification. DAG size of input: 469 DAG size of output: 360 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-16 16:13:19,231 WARN L233 SmtUtils]: Spent 6.49s on a formula simplification. DAG size of input: 491 DAG size of output: 272 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-16 16:13:53,254 WARN L233 SmtUtils]: Spent 11.90s on a formula simplification. DAG size of input: 436 DAG size of output: 340 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-16 16:14:06,308 WARN L233 SmtUtils]: Spent 12.39s on a formula simplification. DAG size of input: 455 DAG size of output: 348 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-16 16:14:28,596 WARN L233 SmtUtils]: Spent 5.95s on a formula simplification. DAG size of input: 544 DAG size of output: 374 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-16 16:15:05,553 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '3203#(and (= ~__ste_Client_Keyring1_User2~0 0) (<= 1 |outgoing__wrappee__AutoResponder_incoming__wrappee__AddressBook_#in~msg#1|) (<= 0 (+ |outgoing__wrappee__AutoResponder_getClientId_~retValue_acc~17#1| 2147483648)) (<= 0 |outgoing__wrappee__AutoResponder_~tmp___0~2#1|) (= ~__GUIDSL_NON_TERMINAL_main~0 0) (<= 2 |outgoing__wrappee__AutoResponder_autoRespond_~__utac__ad__arg1~0#1|) (<= 2 |outgoing__wrappee__AutoResponder_incoming__wrappee__Encrypt_#in~client#1|) (<= |old(~__ste_email_isEncrypted1~0)| 0) (= ~__ste_email_subject0~0.offset 0) (<= 0 ~__ste_email_encryptionKey1~0) (<= 1 |outgoing__wrappee__AutoResponder_outgoing__wrappee__Keys_~client#1|) (= ~__SELECTED_FEATURE_Sign~0 0) (= 0 ~__ste_Client_AddressBook0_Address2~0) (= ~__ste_client_outbuffer3~0 0) (<= |outgoing__wrappee__AutoResponder_findPublicKey_~userid#1| 2) (<= |outgoing__wrappee__AutoResponder_getClientAutoResponse_#res#1| 1) (<= |outgoing__wrappee__AutoResponder_getClientId_~handle#1| 1) (<= |outgoing__wrappee__AutoResponder_incoming__wrappee__Encrypt_~client#1| 2) (= |outgoing__wrappee__AutoResponder_~pubkey~0#1| 0) (<= |outgoing__wrappee__AutoResponder_getClientId_~retValue_acc~17#1| 2147483647) (= ~__ste_Client_counter~0 0) (= ~__ste_Client_Keyring1_PublicKey2~0 0) (<= 2 |outgoing__wrappee__AutoResponder_incoming__wrappee__AddressBook_#in~client#1|) (<= |outgoing__wrappee__AutoResponder_outgoing__wrappee__Keys_#in~client#1| 1) (<= |outgoing__wrappee__AutoResponder_autoRespond_~client#1| 2) (<= |old(~__ste_email_encryptionKey0~0)| 0) (<= 1 |outgoing__wrappee__AutoResponder_incoming_#in~msg#1|) (<= |outgoing__wrappee__AutoResponder_autoRespond_~msg#1| 1) (<= |outgoing__wrappee__AutoResponder_deliver_~msg#1| 1) (<= 1 |outgoing__wrappee__AutoResponder_#in~msg#1|) (<= ~__ste_email_encryptionKey1~0 0) (<= |old(~__ste_email_to0~0)| 2) (= |outgoing__wrappee__AutoResponder_incoming_~privkey~0#1| 0) (= ~__ste_Client_AddressBook2_Alias0~0 0) (= |outgoing__wrappee__AutoResponder___utac_acc__DecryptAutoResponder_spec__1_~tmp~8#1| 0) (= 0 ~__ste_email_subject0~0.base) (<= |outgoing__wrappee__AutoResponder_findPublicKey_~handle#1| 1) (<= |outgoing__wrappee__AutoResponder_~client#1| 1) (<= |outgoing__wrappee__AutoResponder_incoming_#in~msg#1| 1) (= ~__ste_Client_AddressBook2_Alias1~0 0) (= ~__ste_Client_Keyring2_PublicKey2~0 0) (= ~__ste_client_forwardReceiver3~0 0) (<= 2 |outgoing__wrappee__AutoResponder_findPublicKey_#in~userid#1|) (= ~__ste_client_name2~0.offset 0) (<= 2 |outgoing__wrappee__AutoResponder_getClientAutoResponse_~handle#1|) (<= |outgoing__wrappee__AutoResponder_getClientPrivateKey_#res#1| 0) (= ~__ste_client_name1~0.base 0) (<= 0 ~__ste_client_autoResponse1~0) (<= |old(~queued_client~0)| 0) (= ~__SELECTED_FEATURE_Verify~0 0) (= ~__ste_Client_Keyring1_User0~0 0) (<= 0 |old(~__ste_email_encryptionKey1~0)|) (<= 2 |old(~__ste_email_to0~0)|) (<= 0 |old(~queued_message~0)|) (<= |outgoing__wrappee__AutoResponder___utac_acc__DecryptAutoResponder_spec__1_~msg#1| 1) (<= ~__ste_client_idCounter2~0 3) (<= ~queued_message~0 0) (<= |old(~__ste_email_from0~0)| 0) (<= |outgoing__wrappee__AutoResponder_outgoing__wrappee__Keys_~msg#1| 1) (<= |outgoing__wrappee__AutoResponder___utac_acc__DecryptAutoResponder_spec__1_#in~msg#1| 1) (= ~__ste_email_body1~0.offset 0) (<= 2 |outgoing__wrappee__AutoResponder_findPublicKey_~userid#1|) (<= |outgoing__wrappee__AutoResponder_findPublicKey_#res#1| 0) (<= |outgoing__wrappee__AutoResponder_incoming__wrappee__AddressBook_~client#1| 2) (= ~__SELECTED_FEATURE_Encrypt~0 0) (<= 1 |outgoing__wrappee__AutoResponder_deliver_#in~msg#1|) (<= |outgoing__wrappee__AutoResponder_getClientAutoResponse_~handle#1| 2) (= ~__ste_Client_AddressBook1_Address2~0 0) (<= ~__ste_email_from0~0 2147483647) (<= |outgoing__wrappee__AutoResponder_deliver_#in~client#1| 2) (= ~__ste_ClientAddressBook_size1~0 0) (= ~__ste_Client_Keyring0_PublicKey0~0 0) (= ~__ste_Email_counter~0 0) (<= 2 |outgoing__wrappee__AutoResponder_mail_~tmp~9#1|) (<= 1 |outgoing__wrappee__AutoResponder_outgoing__wrappee__Keys_#in~client#1|) (= ~__ste_ClientKeyring_size1~0 0) (= ~__ste_email_body0~0.offset 0) (= ~__ste_email_isSignatureVerified0~0 0) (<= 0 (+ ~__ste_email_from0~0 2147483648)) (= ~__ste_Client_Keyring0_User2~0 0) (= ~__ste_ClientAddressBook_size0~0 0) (<= |old(~__ste_email_isEncrypted0~0)| 0) (= ~__ste_Client_Keyring0_User1~0 0) (= ~__ste_Client_AddressBook1_Alias1~0 0) (= ~__ste_client_name1~0.offset 0) (<= |outgoing__wrappee__AutoResponder_outgoing__wrappee__Keys_#in~msg#1| 1) (<= 1 |outgoing__wrappee__AutoResponder_outgoing__wrappee__Keys_~msg#1|) (<= 1 |outgoing__wrappee__AutoResponder_mail_~client#1|) (= ~head~0.offset 0) (= ~__ste_client_name0~0.offset 0) (<= 2 |outgoing__wrappee__AutoResponder_getClientAutoResponse_#in~handle#1|) (<= ~__ste_client_autoResponse1~0 1) (= ~__ste_Client_Keyring0_PublicKey2~0 0) (<= |outgoing__wrappee__AutoResponder_getClientId_#res#1| 2147483647) (<= |outgoing__wrappee__AutoResponder_incoming_~client#1| 2) (<= 1 |outgoing__wrappee__AutoResponder_findPublicKey_#in~handle#1|) (<= ~__ste_client_privateKey2~0 789) (= ~__ste_Client_Keyring1_PublicKey0~0 0) (<= 0 |old(~__ste_email_encryptionKey0~0)|) (<= |old(~queued_message~0)| 0) (<= 1 |old(~queue_empty~0)|) (<= ~queue_empty~0 1) (<= |outgoing__wrappee__AutoResponder_mail_#in~client#1| 1) (= ~__ste_email_signKey0~0 0) (= ~__SELECTED_FEATURE_Decrypt~0 0) (<= 1 |outgoing__wrappee__AutoResponder_~msg#1|) (<= 0 |old(~__ste_email_isEncrypted0~0)|) (<= 2 |outgoing__wrappee__AutoResponder_incoming__wrappee__AddressBook_~client#1|) (<= |outgoing__wrappee__AutoResponder_outgoing__wrappee__Keys_~client#1| 1) (<= 0 ~__ste_email_isEncrypted1~0) (<= |outgoing__wrappee__AutoResponder_~tmp~11#1| 2) (= ~__SELECTED_FEATURE_Keys~0 0) (<= 0 |old(~__ste_email_from0~0)|) (<= |outgoing__wrappee__AutoResponder_incoming__wrappee__Encrypt_~msg#1| 1) (= ~__SELECTED_FEATURE_AddressBook~0 0) (<= |outgoing__wrappee__AutoResponder_getClientId_#in~handle#1| 1) (= ~__ste_client_forwardReceiver2~0 0) (= ~__ste_Client_Keyring0_PublicKey1~0 0) (= ~__SELECTED_FEATURE_Forward~0 0) (<= |outgoing__wrappee__AutoResponder_incoming_~msg#1| 1) (<= |outgoing__wrappee__AutoResponder_incoming__wrappee__AddressBook_~tmp~13#1| 1) (<= 0 ~__ste_email_isEncrypted0~0) (<= 1 |outgoing__wrappee__AutoResponder_getClientId_#in~handle#1|) (= ~__ste_Client_Keyring0_User0~0 0) (= ~__ste_email_isSigned0~0 0) (<= 1 |outgoing__wrappee__AutoResponder_deliver_~msg#1|) (<= ~__ste_client_idCounter0~0 2147483647) (= ~__ste_Client_Keyring2_PublicKey1~0 0) (<= |outgoing__wrappee__AutoResponder_findPublicKey_#in~userid#1| 2) (= ~__ste_email_isSigned1~0 0) (<= |outgoing__wrappee__AutoResponder_mail_~client#1| 1) (= ~__ste_email_body0~0.base 0) (<= ~__ste_email_isEncrypted0~0 0) (= ~__ste_Client_AddressBook0_Alias0~0 0) (<= 1 |outgoing__wrappee__AutoResponder___utac_acc__DecryptAutoResponder_spec__1_#in~msg#1|) (= ~__ste_email_id0~0 0) (<= ~__ste_client_autoResponse0~0 0) (<= 1 |outgoing__wrappee__AutoResponder_autoRespond_~__utac__ad__arg2~0#1|) (<= 1 |outgoing__wrappee__AutoResponder_autoRespond_~msg#1|) (= ~__ste_Client_Keyring2_User1~0 0) (<= |outgoing__wrappee__AutoResponder_~receiver~0#1| 2) (<= |outgoing__wrappee__AutoResponder___utac_acc__DecryptAutoResponder_spec__1_~client#1| 2) (<= 3 ~__ste_client_idCounter2~0) (<= 1 |outgoing__wrappee__AutoResponder_incoming__wrappee__AddressBook_~msg#1|) (<= |outgoing__wrappee__AutoResponder_getClientPrivateKey_#in~handle#1| 2) (<= 1 |outgoing__wrappee__AutoResponder_mail_#in~client#1|) (<= 2 |outgoing__wrappee__AutoResponder_incoming_#in~client#1|) (= ~__ste_Client_AddressBook2_Address2~0 0) (<= |outgoing__wrappee__AutoResponder_mail_~tmp~9#1| 2) (= 3 ~chuck~0) (<= 0 |outgoing__wrappee__AutoResponder_getClientAutoResponse_~retValue_acc~9#1|) (= ~__ste_Client_AddressBook2_Address1~0 0) (<= 1 ~queue_empty~0) (<= 2 |outgoing__wrappee__AutoResponder_getClientPrivateKey_~handle#1|) (<= |outgoing__wrappee__AutoResponder_incoming_~tmp~14#1| 0) (<= 2 |outgoing__wrappee__AutoResponder_incoming_~client#1|) (<= 1 |outgoing__wrappee__AutoResponder_mail_~msg#1|) (= ~bob~0 1) (= ~__ste_client_forwardReceiver1~0 0) (<= 0 ~__ste_client_autoResponse0~0) (<= 0 ~queued_message~0) (= ~__ste_Client_AddressBook1_Alias2~0 0) (= ~__ste_client_outbuffer0~0 0) (<= 789 ~__ste_client_privateKey2~0) (<= |outgoing__wrappee__AutoResponder_getClientAutoResponse_#in~handle#1| 2) (<= 1 |outgoing__wrappee__AutoResponder___utac_acc__DecryptAutoResponder_spec__1_~msg#1|) (<= 2 |outgoing__wrappee__AutoResponder_autoRespond_~client#1|) (<= 2 |outgoing__wrappee__AutoResponder_deliver_~client#1|) (<= 1 |outgoing__wrappee__AutoResponder_autoRespond_#in~msg#1|) (<= 2 |outgoing__wrappee__AutoResponder_~receiver~0#1|) (<= 1 |outgoing__wrappee__AutoResponder_mail_#in~msg#1|) (<= 0 |old(~__ste_email_isEncrypted1~0)|) (<= 1 |outgoing__wrappee__AutoResponder_incoming_~msg#1|) (= ~__SELECTED_FEATURE_Base~0 0) (<= 1 |outgoing__wrappee__AutoResponder_incoming__wrappee__Encrypt_#in~msg#1|) (= ~__ste_client_forwardReceiver0~0 0) (<= |outgoing__wrappee__AutoResponder_deliver_~client#1| 2) (<= |outgoing__wrappee__AutoResponder_autoRespond_#in~client#1| 2) (<= 2 |outgoing__wrappee__AutoResponder___utac_acc__DecryptAutoResponder_spec__1_#in~client#1|) (<= |outgoing__wrappee__AutoResponder_findPublicKey_~retValue_acc~15#1| 0) (= ~__ste_Client_Keyring2_User0~0 0) (<= 0 (+ |outgoing__wrappee__AutoResponder_getClientId_#res#1| 2147483648)) (= ~rjh~0 2) (= 0 ~__ste_Client_AddressBook0_Address1~0) (= ~__ste_Client_AddressBook2_Address0~0 0) (<= |outgoing__wrappee__AutoResponder_#in~client#1| 1) (= ~__ste_email_isSignatureVerified1~0 0) (= ~__ste_Client_Keyring1_PublicKey1~0 0) (<= 0 ~queued_client~0) (= ~__ste_Client_Keyring2_PublicKey0~0 0) (<= |outgoing__wrappee__AutoResponder_incoming__wrappee__Encrypt_#in~msg#1| 1) (= ~__ste_Client_AddressBook1_Address0~0 0) (<= 2 |outgoing__wrappee__AutoResponder_deliver_#in~client#1|) (= ~__ste_client_name2~0.base 0) (<= 0 (+ |outgoing__wrappee__AutoResponder_outgoing__wrappee__Keys_~tmp~10#1| 2147483648)) (<= 2 |outgoing__wrappee__AutoResponder_getClientPrivateKey_#in~handle#1|) (<= 2 |outgoing__wrappee__AutoResponder___utac_acc__DecryptAutoResponder_spec__1_~client#1|) (<= 0 |old(~queued_client~0)|) (<= ~__ste_email_encryptionKey0~0 0) (<= |outgoing__wrappee__AutoResponder___utac_acc__DecryptAutoResponder_spec__1_#in~client#1| 2) (<= |old(~__ste_email_encryptionKey1~0)| 0) (= ~__ste_email_subject1~0.base 0) (<= |outgoing__wrappee__AutoResponder_incoming__wrappee__AddressBook_~msg#1| 1) (<= |old(~queue_empty~0)| 1) (<= |outgoing__wrappee__AutoResponder_#in~msg#1| 1) (<= |outgoing__wrappee__AutoResponder_mail_~msg#1| 1) (= ~__ste_Client_AddressBook1_Alias0~0 0) (<= 1 |outgoing__wrappee__AutoResponder_incoming__wrappee__Encrypt_~msg#1|) (<= |outgoing__wrappee__AutoResponder_autoRespond_~__utac__ad__arg2~0#1| 1) (= ~__ste_Client_Keyring2_User2~0 0) (<= |outgoing__wrappee__AutoResponder_getClientAutoResponse_~retValue_acc~9#1| 1) (= ~head~0.base 0) (<= |outgoing__wrappee__AutoResponder_getClientPrivateKey_~retValue_acc~10#1| 0) (= ~__ste_Client_Keyring1_User1~0 0) (<= |outgoing__wrappee__AutoResponder_mail_#in~msg#1| 1) (= |#NULL.offset| 0) (<= 0 |outgoing__wrappee__AutoResponder_incoming__wrappee__AddressBook_~tmp~13#1|) (= ~__ste_Client_AddressBook2_Alias2~0 0) (<= |outgoing__wrappee__AutoResponder_findPublicKey_#in~handle#1| 1) (<= 0 |outgoing__wrappee__AutoResponder_getClientPrivateKey_~retValue_acc~10#1|) (<= |outgoing__wrappee__AutoResponder_~msg#1| 1) (<= 0 ~__ste_client_autoResponse2~0) (= ~__ste_email_subject1~0.offset 0) (<= 0 |outgoing__wrappee__AutoResponder_findPublicKey_~retValue_acc~15#1|) (= ~__ste_Client_AddressBook0_Alias2~0 0) (= ~__ste_ClientKeyring_size0~0 0) (<= 1 |outgoing__wrappee__AutoResponder_#in~client#1|) (= ~__ste_Client_AddressBook1_Address1~0 0) (= 0 ~__ste_Client_AddressBook0_Address0~0) (= ~__ste_client_outbuffer1~0 0) (<= |outgoing__wrappee__AutoResponder_incoming__wrappee__AddressBook_#in~client#1| 2) (<= |outgoing__wrappee__AutoResponder_getClientPrivateKey_~handle#1| 2) (= ~__ste_Client_AddressBook0_Alias1~0 0) (<= ~__ste_email_isEncrypted1~0 0) (<= ~__ste_client_privateKey1~0 0) (= ~__GUIDSL_ROOT_PRODUCTION~0 0) (<= 2 |outgoing__wrappee__AutoResponder_~tmp~11#1|) (<= |outgoing__wrappee__AutoResponder_outgoing__wrappee__Keys_~tmp~10#1| 2147483647) (<= 0 |outgoing__wrappee__AutoResponder_findPublicKey_#res#1|) (<= 1 |outgoing__wrappee__AutoResponder_outgoing__wrappee__Keys_#in~msg#1|) (<= 0 |outgoing__wrappee__AutoResponder_getClientPrivateKey_#res#1|) (<= |outgoing__wrappee__AutoResponder_incoming_#in~client#1| 2) (<= 1 |outgoing__wrappee__AutoResponder_getClientId_~handle#1|) (= ~__ste_client_name0~0.base 0) (= ~__ste_email_id1~0 0) (= ~__ste_client_outbuffer2~0 0) (<= 0 (+ ~__ste_client_idCounter0~0 2147483648)) (<= |outgoing__wrappee__AutoResponder_deliver_#in~msg#1| 1) (<= 2 ~__ste_email_to0~0) (<= 0 |outgoing__wrappee__AutoResponder_getClientAutoResponse_#res#1|) (<= |outgoing__wrappee__AutoResponder_autoRespond_#in~msg#1| 1) (<= 0 |#StackHeapBarrier|) (<= ~__ste_email_to0~0 2) (<= 0 |outgoing__wrappee__AutoResponder_incoming_~tmp~14#1|) (<= 1 |outgoing__wrappee__AutoResponder_~client#1|) (= ~__ste_ClientAddressBook_size2~0 0) (<= 2 |outgoing__wrappee__AutoResponder_incoming__wrappee__Encrypt_~client#1|) (= ~__SELECTED_FEATURE_AutoResponder~0 0) (<= ~__ste_client_autoResponse2~0 0) (<= |outgoing__wrappee__AutoResponder_autoRespond_~__utac__ad__arg1~0#1| 2) (= ~__ste_email_body1~0.base 0) (<= 2 |outgoing__wrappee__AutoResponder_autoRespond_#in~client#1|) (= ~__ste_ClientKeyring_size2~0 0) (<= |outgoing__wrappee__AutoResponder_incoming__wrappee__Encrypt_#in~client#1| 2) (<= 0 ~__ste_email_encryptionKey0~0) (<= |outgoing__wrappee__AutoResponder_~tmp___0~2#1| 0) (= |#NULL.base| 0) (<= |outgoing__wrappee__AutoResponder_incoming__wrappee__AddressBook_#in~msg#1| 1) (<= 0 ~__ste_client_privateKey1~0) (<= 1 |outgoing__wrappee__AutoResponder_findPublicKey_~handle#1|) (= ~__ste_email_signKey1~0 0) (<= ~queued_client~0 0))' at error location [2022-11-16 16:15:05,553 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-16 16:15:05,554 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 16:15:05,554 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2022-11-16 16:15:05,554 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1394689365] [2022-11-16 16:15:05,554 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 16:15:05,555 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-16 16:15:05,555 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 16:15:05,556 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-16 16:15:05,558 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=187, Invalid=3973, Unknown=0, NotChecked=0, Total=4160 [2022-11-16 16:15:05,558 INFO L87 Difference]: Start difference. First operand 229 states and 323 transitions. Second operand has 7 states, 7 states have (on average 8.857142857142858) internal successors, (62), 7 states have internal predecessors, (62), 2 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) [2022-11-16 16:15:05,906 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 16:15:05,906 INFO L93 Difference]: Finished difference Result 591 states and 896 transitions. [2022-11-16 16:15:05,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-16 16:15:05,907 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.857142857142858) internal successors, (62), 7 states have internal predecessors, (62), 2 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) Word has length 80 [2022-11-16 16:15:05,907 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 16:15:05,915 INFO L225 Difference]: With dead ends: 591 [2022-11-16 16:15:05,916 INFO L226 Difference]: Without dead ends: 504 [2022-11-16 16:15:05,917 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 242 GetRequests, 175 SyntacticMatches, 4 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 945 ImplicationChecksByTransitivity, 212.6s TimeCoverageRelationStatistics Valid=187, Invalid=3973, Unknown=0, NotChecked=0, Total=4160 [2022-11-16 16:15:05,921 INFO L413 NwaCegarLoop]: 282 mSDtfsCounter, 221 mSDsluCounter, 603 mSDsCounter, 0 mSdLazyCounter, 220 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 275 SdHoareTripleChecker+Valid, 885 SdHoareTripleChecker+Invalid, 242 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 220 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-16 16:15:05,921 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [275 Valid, 885 Invalid, 242 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 220 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-16 16:15:05,923 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 504 states. [2022-11-16 16:15:05,968 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 504 to 489. [2022-11-16 16:15:05,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 489 states, 318 states have (on average 1.490566037735849) internal successors, (474), 322 states have internal predecessors, (474), 147 states have call successors, (147), 23 states have call predecessors, (147), 23 states have return successors, (146), 145 states have call predecessors, (146), 146 states have call successors, (146) [2022-11-16 16:15:05,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 489 states to 489 states and 767 transitions. [2022-11-16 16:15:05,976 INFO L78 Accepts]: Start accepts. Automaton has 489 states and 767 transitions. Word has length 80 [2022-11-16 16:15:05,976 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 16:15:05,976 INFO L495 AbstractCegarLoop]: Abstraction has 489 states and 767 transitions. [2022-11-16 16:15:05,977 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.857142857142858) internal successors, (62), 7 states have internal predecessors, (62), 2 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) [2022-11-16 16:15:05,977 INFO L276 IsEmpty]: Start isEmpty. Operand 489 states and 767 transitions. [2022-11-16 16:15:05,984 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2022-11-16 16:15:05,984 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 16:15:05,985 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 16:15:06,001 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f2ec80c-160a-45e0-8e66-1e4a6139da16/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-16 16:15:06,196 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f2ec80c-160a-45e0-8e66-1e4a6139da16/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 16:15:06,197 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 16:15:06,197 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 16:15:06,197 INFO L85 PathProgramCache]: Analyzing trace with hash -1628636535, now seen corresponding path program 1 times [2022-11-16 16:15:06,197 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 16:15:06,198 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [940617974] [2022-11-16 16:15:06,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 16:15:06,198 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 16:15:06,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 16:15:06,324 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-16 16:15:06,326 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 16:15:06,326 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [940617974] [2022-11-16 16:15:06,327 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [940617974] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 16:15:06,328 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 16:15:06,328 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 16:15:06,328 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [693464921] [2022-11-16 16:15:06,328 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 16:15:06,329 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 16:15:06,329 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 16:15:06,329 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 16:15:06,329 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 16:15:06,330 INFO L87 Difference]: Start difference. First operand 489 states and 767 transitions. Second operand has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-11-16 16:15:06,463 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 16:15:06,464 INFO L93 Difference]: Finished difference Result 1208 states and 1932 transitions. [2022-11-16 16:15:06,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 16:15:06,464 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 86 [2022-11-16 16:15:06,464 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 16:15:06,468 INFO L225 Difference]: With dead ends: 1208 [2022-11-16 16:15:06,469 INFO L226 Difference]: Without dead ends: 751 [2022-11-16 16:15:06,470 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 [2022-11-16 16:15:06,471 INFO L413 NwaCegarLoop]: 228 mSDtfsCounter, 57 mSDsluCounter, 203 mSDsCounter, 0 mSdLazyCounter, 73 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 75 SdHoareTripleChecker+Valid, 431 SdHoareTripleChecker+Invalid, 74 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 73 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 16:15:06,471 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [75 Valid, 431 Invalid, 74 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 73 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-16 16:15:06,473 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 751 states. [2022-11-16 16:15:06,514 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 751 to 746. [2022-11-16 16:15:06,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 746 states, 496 states have (on average 1.5060483870967742) internal successors, (747), 500 states have internal predecessors, (747), 226 states have call successors, (226), 23 states have call predecessors, (226), 23 states have return successors, (225), 224 states have call predecessors, (225), 225 states have call successors, (225) [2022-11-16 16:15:06,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 746 states to 746 states and 1198 transitions. [2022-11-16 16:15:06,521 INFO L78 Accepts]: Start accepts. Automaton has 746 states and 1198 transitions. Word has length 86 [2022-11-16 16:15:06,521 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 16:15:06,521 INFO L495 AbstractCegarLoop]: Abstraction has 746 states and 1198 transitions. [2022-11-16 16:15:06,521 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-11-16 16:15:06,522 INFO L276 IsEmpty]: Start isEmpty. Operand 746 states and 1198 transitions. [2022-11-16 16:15:06,525 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2022-11-16 16:15:06,525 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 16:15:06,526 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 16:15:06,526 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-16 16:15:06,526 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 16:15:06,526 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 16:15:06,527 INFO L85 PathProgramCache]: Analyzing trace with hash 2090965858, now seen corresponding path program 1 times [2022-11-16 16:15:06,527 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 16:15:06,527 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [681291524] [2022-11-16 16:15:06,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 16:15:06,527 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 16:15:06,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 16:15:06,632 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-16 16:15:06,633 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 16:15:06,633 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [681291524] [2022-11-16 16:15:06,633 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [681291524] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 16:15:06,633 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 16:15:06,633 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 16:15:06,633 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1978018558] [2022-11-16 16:15:06,634 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 16:15:06,634 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 16:15:06,634 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 16:15:06,635 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 16:15:06,635 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 16:15:06,635 INFO L87 Difference]: Start difference. First operand 746 states and 1198 transitions. Second operand has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-11-16 16:15:06,787 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 16:15:06,787 INFO L93 Difference]: Finished difference Result 1830 states and 2979 transitions. [2022-11-16 16:15:06,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 16:15:06,788 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 87 [2022-11-16 16:15:06,788 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 16:15:06,795 INFO L225 Difference]: With dead ends: 1830 [2022-11-16 16:15:06,795 INFO L226 Difference]: Without dead ends: 1146 [2022-11-16 16:15:06,797 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 [2022-11-16 16:15:06,798 INFO L413 NwaCegarLoop]: 220 mSDtfsCounter, 55 mSDsluCounter, 197 mSDsCounter, 0 mSdLazyCounter, 72 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 73 SdHoareTripleChecker+Valid, 417 SdHoareTripleChecker+Invalid, 73 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 72 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 16:15:06,798 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [73 Valid, 417 Invalid, 73 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 72 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-16 16:15:06,800 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1146 states. [2022-11-16 16:15:06,868 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1146 to 1141. [2022-11-16 16:15:06,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1141 states, 772 states have (on average 1.511658031088083) internal successors, (1167), 776 states have internal predecessors, (1167), 345 states have call successors, (345), 23 states have call predecessors, (345), 23 states have return successors, (344), 343 states have call predecessors, (344), 344 states have call successors, (344) [2022-11-16 16:15:06,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1141 states to 1141 states and 1856 transitions. [2022-11-16 16:15:06,878 INFO L78 Accepts]: Start accepts. Automaton has 1141 states and 1856 transitions. Word has length 87 [2022-11-16 16:15:06,878 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 16:15:06,878 INFO L495 AbstractCegarLoop]: Abstraction has 1141 states and 1856 transitions. [2022-11-16 16:15:06,879 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-11-16 16:15:06,879 INFO L276 IsEmpty]: Start isEmpty. Operand 1141 states and 1856 transitions. [2022-11-16 16:15:06,884 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2022-11-16 16:15:06,884 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 16:15:06,885 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 16:15:06,885 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-16 16:15:06,885 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 16:15:06,886 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 16:15:06,886 INFO L85 PathProgramCache]: Analyzing trace with hash -30321125, now seen corresponding path program 1 times [2022-11-16 16:15:06,886 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 16:15:06,886 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [71274291] [2022-11-16 16:15:06,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 16:15:06,886 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 16:15:06,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 16:15:06,990 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-16 16:15:06,991 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 16:15:06,991 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [71274291] [2022-11-16 16:15:06,991 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [71274291] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 16:15:06,991 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 16:15:06,991 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 16:15:06,992 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [364471952] [2022-11-16 16:15:06,992 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 16:15:06,992 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 16:15:06,992 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 16:15:06,993 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 16:15:06,993 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 16:15:06,993 INFO L87 Difference]: Start difference. First operand 1141 states and 1856 transitions. Second operand has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-11-16 16:15:07,194 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 16:15:07,194 INFO L93 Difference]: Finished difference Result 2733 states and 4491 transitions. [2022-11-16 16:15:07,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 16:15:07,195 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 88 [2022-11-16 16:15:07,195 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 16:15:07,204 INFO L225 Difference]: With dead ends: 2733 [2022-11-16 16:15:07,205 INFO L226 Difference]: Without dead ends: 1734 [2022-11-16 16:15:07,208 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 [2022-11-16 16:15:07,209 INFO L413 NwaCegarLoop]: 217 mSDtfsCounter, 53 mSDsluCounter, 194 mSDsCounter, 0 mSdLazyCounter, 72 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 71 SdHoareTripleChecker+Valid, 411 SdHoareTripleChecker+Invalid, 73 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 72 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 16:15:07,209 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [71 Valid, 411 Invalid, 73 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 72 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-16 16:15:07,211 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1734 states. [2022-11-16 16:15:07,312 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1734 to 1729. [2022-11-16 16:15:07,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1729 states, 1198 states have (on average 1.515025041736227) internal successors, (1815), 1202 states have internal predecessors, (1815), 507 states have call successors, (507), 23 states have call predecessors, (507), 23 states have return successors, (506), 505 states have call predecessors, (506), 506 states have call successors, (506) [2022-11-16 16:15:07,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1729 states to 1729 states and 2828 transitions. [2022-11-16 16:15:07,326 INFO L78 Accepts]: Start accepts. Automaton has 1729 states and 2828 transitions. Word has length 88 [2022-11-16 16:15:07,326 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 16:15:07,326 INFO L495 AbstractCegarLoop]: Abstraction has 1729 states and 2828 transitions. [2022-11-16 16:15:07,326 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-11-16 16:15:07,326 INFO L276 IsEmpty]: Start isEmpty. Operand 1729 states and 2828 transitions. [2022-11-16 16:15:07,334 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2022-11-16 16:15:07,334 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 16:15:07,334 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 16:15:07,335 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-16 16:15:07,335 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 16:15:07,335 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 16:15:07,335 INFO L85 PathProgramCache]: Analyzing trace with hash -1897243903, now seen corresponding path program 1 times [2022-11-16 16:15:07,335 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 16:15:07,336 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1246755314] [2022-11-16 16:15:07,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 16:15:07,336 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 16:15:07,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 16:15:07,412 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-16 16:15:07,413 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 16:15:07,413 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1246755314] [2022-11-16 16:15:07,413 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1246755314] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 16:15:07,413 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 16:15:07,413 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 16:15:07,414 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1479745168] [2022-11-16 16:15:07,414 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 16:15:07,414 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 16:15:07,414 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 16:15:07,415 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 16:15:07,415 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 16:15:07,415 INFO L87 Difference]: Start difference. First operand 1729 states and 2828 transitions. Second operand has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-11-16 16:15:07,640 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 16:15:07,640 INFO L93 Difference]: Finished difference Result 4118 states and 6799 transitions. [2022-11-16 16:15:07,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 16:15:07,641 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 89 [2022-11-16 16:15:07,641 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 16:15:07,656 INFO L225 Difference]: With dead ends: 4118 [2022-11-16 16:15:07,656 INFO L226 Difference]: Without dead ends: 2668 [2022-11-16 16:15:07,662 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 [2022-11-16 16:15:07,663 INFO L413 NwaCegarLoop]: 217 mSDtfsCounter, 51 mSDsluCounter, 194 mSDsCounter, 0 mSdLazyCounter, 72 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 69 SdHoareTripleChecker+Valid, 411 SdHoareTripleChecker+Invalid, 73 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 72 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 16:15:07,663 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [69 Valid, 411 Invalid, 73 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 72 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-16 16:15:07,667 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2668 states. [2022-11-16 16:15:07,895 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2668 to 2663. [2022-11-16 16:15:07,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2663 states, 1887 states have (on average 1.516163222045575) internal successors, (2861), 1891 states have internal predecessors, (2861), 752 states have call successors, (752), 23 states have call predecessors, (752), 23 states have return successors, (751), 750 states have call predecessors, (751), 751 states have call successors, (751) [2022-11-16 16:15:07,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2663 states to 2663 states and 4364 transitions. [2022-11-16 16:15:07,916 INFO L78 Accepts]: Start accepts. Automaton has 2663 states and 4364 transitions. Word has length 89 [2022-11-16 16:15:07,917 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 16:15:07,917 INFO L495 AbstractCegarLoop]: Abstraction has 2663 states and 4364 transitions. [2022-11-16 16:15:07,917 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-11-16 16:15:07,918 INFO L276 IsEmpty]: Start isEmpty. Operand 2663 states and 4364 transitions. [2022-11-16 16:15:07,929 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2022-11-16 16:15:07,929 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 16:15:07,930 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 16:15:07,930 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-16 16:15:07,930 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 16:15:07,930 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 16:15:07,931 INFO L85 PathProgramCache]: Analyzing trace with hash 1727987263, now seen corresponding path program 1 times [2022-11-16 16:15:07,931 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 16:15:07,931 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [46635461] [2022-11-16 16:15:07,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 16:15:07,931 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 16:15:07,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 16:15:08,008 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-16 16:15:08,008 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 16:15:08,008 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [46635461] [2022-11-16 16:15:08,008 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [46635461] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 16:15:08,008 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 16:15:08,009 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 16:15:08,009 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [160832856] [2022-11-16 16:15:08,009 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 16:15:08,009 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 16:15:08,010 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 16:15:08,010 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 16:15:08,010 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 16:15:08,010 INFO L87 Difference]: Start difference. First operand 2663 states and 4364 transitions. Second operand has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-11-16 16:15:08,343 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 16:15:08,343 INFO L93 Difference]: Finished difference Result 6634 states and 10959 transitions. [2022-11-16 16:15:08,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 16:15:08,344 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 90 [2022-11-16 16:15:08,344 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 16:15:08,369 INFO L225 Difference]: With dead ends: 6634 [2022-11-16 16:15:08,370 INFO L226 Difference]: Without dead ends: 4393 [2022-11-16 16:15:08,378 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 [2022-11-16 16:15:08,379 INFO L413 NwaCegarLoop]: 228 mSDtfsCounter, 49 mSDsluCounter, 201 mSDsCounter, 0 mSdLazyCounter, 74 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 67 SdHoareTripleChecker+Valid, 429 SdHoareTripleChecker+Invalid, 75 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 74 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 16:15:08,380 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [67 Valid, 429 Invalid, 75 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 74 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-16 16:15:08,385 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4393 states. [2022-11-16 16:15:08,748 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4393 to 4388. [2022-11-16 16:15:08,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4388 states, 3119 states have (on average 1.504969541519718) internal successors, (4694), 3123 states have internal predecessors, (4694), 1245 states have call successors, (1245), 23 states have call predecessors, (1245), 23 states have return successors, (1244), 1243 states have call predecessors, (1244), 1244 states have call successors, (1244) [2022-11-16 16:15:08,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4388 states to 4388 states and 7183 transitions. [2022-11-16 16:15:08,778 INFO L78 Accepts]: Start accepts. Automaton has 4388 states and 7183 transitions. Word has length 90 [2022-11-16 16:15:08,779 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 16:15:08,779 INFO L495 AbstractCegarLoop]: Abstraction has 4388 states and 7183 transitions. [2022-11-16 16:15:08,779 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-11-16 16:15:08,779 INFO L276 IsEmpty]: Start isEmpty. Operand 4388 states and 7183 transitions. [2022-11-16 16:15:08,795 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2022-11-16 16:15:08,795 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 16:15:08,796 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 16:15:08,796 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-16 16:15:08,796 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 16:15:08,796 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 16:15:08,797 INFO L85 PathProgramCache]: Analyzing trace with hash 1376828125, now seen corresponding path program 1 times [2022-11-16 16:15:08,797 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 16:15:08,797 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [986957684] [2022-11-16 16:15:08,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 16:15:08,797 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 16:15:08,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 16:15:08,879 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-16 16:15:08,880 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 16:15:08,880 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [986957684] [2022-11-16 16:15:08,880 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [986957684] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 16:15:08,880 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 16:15:08,880 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 16:15:08,880 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2024631894] [2022-11-16 16:15:08,881 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 16:15:08,881 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 16:15:08,881 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 16:15:08,882 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 16:15:08,882 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 16:15:08,882 INFO L87 Difference]: Start difference. First operand 4388 states and 7183 transitions. Second operand has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-11-16 16:15:09,478 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 16:15:09,478 INFO L93 Difference]: Finished difference Result 11050 states and 18244 transitions. [2022-11-16 16:15:09,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 16:15:09,479 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 91 [2022-11-16 16:15:09,479 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 16:15:09,521 INFO L225 Difference]: With dead ends: 11050 [2022-11-16 16:15:09,521 INFO L226 Difference]: Without dead ends: 7350 [2022-11-16 16:15:09,535 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 [2022-11-16 16:15:09,535 INFO L413 NwaCegarLoop]: 220 mSDtfsCounter, 47 mSDsluCounter, 197 mSDsCounter, 0 mSdLazyCounter, 72 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 65 SdHoareTripleChecker+Valid, 417 SdHoareTripleChecker+Invalid, 73 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 72 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 16:15:09,536 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [65 Valid, 417 Invalid, 73 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 72 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-16 16:15:09,544 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7350 states. [2022-11-16 16:15:10,247 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7350 to 7345. [2022-11-16 16:15:10,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7345 states, 5254 states have (on average 1.4996193376475067) internal successors, (7879), 5258 states have internal predecessors, (7879), 2067 states have call successors, (2067), 23 states have call predecessors, (2067), 23 states have return successors, (2066), 2065 states have call predecessors, (2066), 2066 states have call successors, (2066) [2022-11-16 16:15:10,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7345 states to 7345 states and 12012 transitions. [2022-11-16 16:15:10,310 INFO L78 Accepts]: Start accepts. Automaton has 7345 states and 12012 transitions. Word has length 91 [2022-11-16 16:15:10,310 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 16:15:10,311 INFO L495 AbstractCegarLoop]: Abstraction has 7345 states and 12012 transitions. [2022-11-16 16:15:10,312 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-11-16 16:15:10,312 INFO L276 IsEmpty]: Start isEmpty. Operand 7345 states and 12012 transitions. [2022-11-16 16:15:10,337 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2022-11-16 16:15:10,337 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 16:15:10,337 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 16:15:10,337 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-16 16:15:10,338 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 16:15:10,338 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 16:15:10,338 INFO L85 PathProgramCache]: Analyzing trace with hash -1453916835, now seen corresponding path program 1 times [2022-11-16 16:15:10,339 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 16:15:10,339 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1195378576] [2022-11-16 16:15:10,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 16:15:10,339 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 16:15:10,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 16:15:10,420 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-16 16:15:10,420 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 16:15:10,420 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1195378576] [2022-11-16 16:15:10,420 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1195378576] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 16:15:10,420 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 16:15:10,421 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 16:15:10,421 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1449805696] [2022-11-16 16:15:10,421 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 16:15:10,422 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 16:15:10,422 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 16:15:10,423 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 16:15:10,423 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 16:15:10,423 INFO L87 Difference]: Start difference. First operand 7345 states and 12012 transitions. Second operand has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-11-16 16:15:11,432 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 16:15:11,433 INFO L93 Difference]: Finished difference Result 18517 states and 30506 transitions. [2022-11-16 16:15:11,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 16:15:11,433 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 92 [2022-11-16 16:15:11,434 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 16:15:11,521 INFO L225 Difference]: With dead ends: 18517 [2022-11-16 16:15:11,521 INFO L226 Difference]: Without dead ends: 12294 [2022-11-16 16:15:11,540 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 [2022-11-16 16:15:11,541 INFO L413 NwaCegarLoop]: 218 mSDtfsCounter, 45 mSDsluCounter, 196 mSDsCounter, 0 mSdLazyCounter, 73 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 414 SdHoareTripleChecker+Invalid, 74 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 73 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 16:15:11,541 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [63 Valid, 414 Invalid, 74 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 73 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-16 16:15:11,554 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12294 states. [2022-11-16 16:15:12,727 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12294 to 12289. [2022-11-16 16:15:12,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12289 states, 8995 states have (on average 1.500833796553641) internal successors, (13500), 8999 states have internal predecessors, (13500), 3270 states have call successors, (3270), 23 states have call predecessors, (3270), 23 states have return successors, (3269), 3268 states have call predecessors, (3269), 3269 states have call successors, (3269) [2022-11-16 16:15:12,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12289 states to 12289 states and 20039 transitions. [2022-11-16 16:15:12,819 INFO L78 Accepts]: Start accepts. Automaton has 12289 states and 20039 transitions. Word has length 92 [2022-11-16 16:15:12,819 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 16:15:12,819 INFO L495 AbstractCegarLoop]: Abstraction has 12289 states and 20039 transitions. [2022-11-16 16:15:12,820 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-11-16 16:15:12,820 INFO L276 IsEmpty]: Start isEmpty. Operand 12289 states and 20039 transitions. [2022-11-16 16:15:12,849 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2022-11-16 16:15:12,849 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 16:15:12,849 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 16:15:12,849 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-16 16:15:12,850 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 16:15:12,850 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 16:15:12,850 INFO L85 PathProgramCache]: Analyzing trace with hash 922258140, now seen corresponding path program 1 times [2022-11-16 16:15:12,850 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 16:15:12,851 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1250389619] [2022-11-16 16:15:12,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 16:15:12,851 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 16:15:12,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 16:15:12,969 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-16 16:15:12,969 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 16:15:12,969 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1250389619] [2022-11-16 16:15:12,969 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1250389619] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 16:15:12,970 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 16:15:12,970 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 16:15:12,970 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1940297585] [2022-11-16 16:15:12,970 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 16:15:12,971 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 16:15:12,971 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 16:15:12,971 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 16:15:12,971 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 16:15:12,972 INFO L87 Difference]: Start difference. First operand 12289 states and 20039 transitions. Second operand has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-11-16 16:15:14,613 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 16:15:14,613 INFO L93 Difference]: Finished difference Result 32521 states and 53368 transitions. [2022-11-16 16:15:14,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 16:15:14,614 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 93 [2022-11-16 16:15:14,614 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 16:15:14,703 INFO L225 Difference]: With dead ends: 32521 [2022-11-16 16:15:14,703 INFO L226 Difference]: Without dead ends: 21806 [2022-11-16 16:15:14,743 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 [2022-11-16 16:15:14,744 INFO L413 NwaCegarLoop]: 219 mSDtfsCounter, 43 mSDsluCounter, 197 mSDsCounter, 0 mSdLazyCounter, 72 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 416 SdHoareTripleChecker+Invalid, 73 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 72 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 16:15:14,744 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [61 Valid, 416 Invalid, 73 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 72 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-16 16:15:14,768 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21806 states. [2022-11-16 16:15:17,024 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21806 to 21801. [2022-11-16 16:15:17,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21801 states, 16057 states have (on average 1.4929937099084511) internal successors, (23973), 16061 states have internal predecessors, (23973), 5720 states have call successors, (5720), 23 states have call predecessors, (5720), 23 states have return successors, (5719), 5718 states have call predecessors, (5719), 5719 states have call successors, (5719) [2022-11-16 16:15:17,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21801 states to 21801 states and 35412 transitions. [2022-11-16 16:15:17,287 INFO L78 Accepts]: Start accepts. Automaton has 21801 states and 35412 transitions. Word has length 93 [2022-11-16 16:15:17,288 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 16:15:17,288 INFO L495 AbstractCegarLoop]: Abstraction has 21801 states and 35412 transitions. [2022-11-16 16:15:17,289 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-11-16 16:15:17,289 INFO L276 IsEmpty]: Start isEmpty. Operand 21801 states and 35412 transitions. [2022-11-16 16:15:17,317 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2022-11-16 16:15:17,317 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 16:15:17,318 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 16:15:17,318 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-16 16:15:17,318 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 16:15:17,320 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 16:15:17,320 INFO L85 PathProgramCache]: Analyzing trace with hash 369669731, now seen corresponding path program 1 times [2022-11-16 16:15:17,320 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 16:15:17,320 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1230306819] [2022-11-16 16:15:17,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 16:15:17,320 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 16:15:17,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 16:15:17,411 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-16 16:15:17,412 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 16:15:17,412 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1230306819] [2022-11-16 16:15:17,412 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1230306819] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 16:15:17,412 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 16:15:17,412 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 16:15:17,413 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [628543324] [2022-11-16 16:15:17,413 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 16:15:17,413 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 16:15:17,413 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 16:15:17,414 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 16:15:17,414 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 16:15:17,414 INFO L87 Difference]: Start difference. First operand 21801 states and 35412 transitions. Second operand has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-11-16 16:15:19,752 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 16:15:19,752 INFO L93 Difference]: Finished difference Result 59208 states and 96620 transitions. [2022-11-16 16:15:19,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 16:15:19,752 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 94 [2022-11-16 16:15:19,753 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 16:15:19,934 INFO L225 Difference]: With dead ends: 59208 [2022-11-16 16:15:19,935 INFO L226 Difference]: Without dead ends: 39576 [2022-11-16 16:15:19,998 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 [2022-11-16 16:15:19,999 INFO L413 NwaCegarLoop]: 219 mSDtfsCounter, 41 mSDsluCounter, 197 mSDsCounter, 0 mSdLazyCounter, 72 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 59 SdHoareTripleChecker+Valid, 416 SdHoareTripleChecker+Invalid, 73 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 72 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 16:15:19,999 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [59 Valid, 416 Invalid, 73 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 72 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-16 16:15:20,040 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39576 states. [2022-11-16 16:15:22,852 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39576 to 39571. [2022-11-16 16:15:22,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39571 states, 29314 states have (on average 1.4821928088967729) internal successors, (43449), 29318 states have internal predecessors, (43449), 10233 states have call successors, (10233), 23 states have call predecessors, (10233), 23 states have return successors, (10232), 10231 states have call predecessors, (10232), 10232 states have call successors, (10232) [2022-11-16 16:15:23,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39571 states to 39571 states and 63914 transitions. [2022-11-16 16:15:23,272 INFO L78 Accepts]: Start accepts. Automaton has 39571 states and 63914 transitions. Word has length 94 [2022-11-16 16:15:23,272 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 16:15:23,272 INFO L495 AbstractCegarLoop]: Abstraction has 39571 states and 63914 transitions. [2022-11-16 16:15:23,273 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-11-16 16:15:23,273 INFO L276 IsEmpty]: Start isEmpty. Operand 39571 states and 63914 transitions. [2022-11-16 16:15:23,315 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2022-11-16 16:15:23,315 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 16:15:23,315 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 16:15:23,315 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-16 16:15:23,316 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 16:15:23,316 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 16:15:23,316 INFO L85 PathProgramCache]: Analyzing trace with hash -654194340, now seen corresponding path program 1 times [2022-11-16 16:15:23,316 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 16:15:23,317 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1723893529] [2022-11-16 16:15:23,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 16:15:23,317 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 16:15:23,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 16:15:23,424 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-16 16:15:23,424 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 16:15:23,424 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1723893529] [2022-11-16 16:15:23,425 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1723893529] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 16:15:23,425 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 16:15:23,425 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 16:15:23,425 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [988259984] [2022-11-16 16:15:23,425 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 16:15:23,427 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 16:15:23,427 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 16:15:23,428 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 16:15:23,428 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 16:15:23,428 INFO L87 Difference]: Start difference. First operand 39571 states and 63914 transitions. Second operand has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-11-16 16:15:27,843 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 16:15:27,843 INFO L93 Difference]: Finished difference Result 73106 states and 118255 transitions. [2022-11-16 16:15:27,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 16:15:27,844 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 95 [2022-11-16 16:15:27,844 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 16:15:28,110 INFO L225 Difference]: With dead ends: 73106 [2022-11-16 16:15:28,111 INFO L226 Difference]: Without dead ends: 73019 [2022-11-16 16:15:28,137 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 [2022-11-16 16:15:28,137 INFO L413 NwaCegarLoop]: 219 mSDtfsCounter, 39 mSDsluCounter, 197 mSDsCounter, 0 mSdLazyCounter, 72 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 57 SdHoareTripleChecker+Valid, 416 SdHoareTripleChecker+Invalid, 73 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 72 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 16:15:28,137 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [57 Valid, 416 Invalid, 73 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 72 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-16 16:15:28,200 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73019 states. [2022-11-16 16:15:32,772 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73019 to 73014. [2022-11-16 16:15:32,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73014 states, 54389 states have (on average 1.4681461324900256) internal successors, (79851), 54393 states have internal predecessors, (79851), 18601 states have call successors, (18601), 23 states have call predecessors, (18601), 23 states have return successors, (18600), 18599 states have call predecessors, (18600), 18600 states have call successors, (18600) [2022-11-16 16:15:33,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73014 states to 73014 states and 117052 transitions. [2022-11-16 16:15:33,091 INFO L78 Accepts]: Start accepts. Automaton has 73014 states and 117052 transitions. Word has length 95 [2022-11-16 16:15:33,091 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 16:15:33,092 INFO L495 AbstractCegarLoop]: Abstraction has 73014 states and 117052 transitions. [2022-11-16 16:15:33,092 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-11-16 16:15:33,092 INFO L276 IsEmpty]: Start isEmpty. Operand 73014 states and 117052 transitions. [2022-11-16 16:15:33,125 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2022-11-16 16:15:33,125 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 16:15:33,125 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 16:15:33,125 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-16 16:15:33,125 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 16:15:33,126 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 16:15:33,126 INFO L85 PathProgramCache]: Analyzing trace with hash -1540313628, now seen corresponding path program 1 times [2022-11-16 16:15:33,126 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 16:15:33,126 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1545310649] [2022-11-16 16:15:33,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 16:15:33,127 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 16:15:33,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 16:15:34,320 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-16 16:15:34,320 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 16:15:34,320 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1545310649] [2022-11-16 16:15:34,320 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1545310649] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 16:15:34,320 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 16:15:34,321 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-11-16 16:15:34,321 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2071398861] [2022-11-16 16:15:34,321 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 16:15:34,321 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-11-16 16:15:34,321 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 16:15:34,322 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-11-16 16:15:34,322 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=332, Unknown=0, NotChecked=0, Total=380 [2022-11-16 16:15:34,322 INFO L87 Difference]: Start difference. First operand 73014 states and 117052 transitions. Second operand has 20 states, 15 states have (on average 3.933333333333333) internal successors, (59), 16 states have internal predecessors, (59), 9 states have call successors, (17), 4 states have call predecessors, (17), 3 states have return successors, (14), 8 states have call predecessors, (14), 8 states have call successors, (14) [2022-11-16 16:15:40,516 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 16:15:40,516 INFO L93 Difference]: Finished difference Result 73144 states and 117230 transitions. [2022-11-16 16:15:40,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-11-16 16:15:40,517 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 15 states have (on average 3.933333333333333) internal successors, (59), 16 states have internal predecessors, (59), 9 states have call successors, (17), 4 states have call predecessors, (17), 3 states have return successors, (14), 8 states have call predecessors, (14), 8 states have call successors, (14) Word has length 96 [2022-11-16 16:15:40,517 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 16:15:40,821 INFO L225 Difference]: With dead ends: 73144 [2022-11-16 16:15:40,821 INFO L226 Difference]: Without dead ends: 73140 [2022-11-16 16:15:40,848 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 177 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=182, Invalid=1078, Unknown=0, NotChecked=0, Total=1260 [2022-11-16 16:15:40,849 INFO L413 NwaCegarLoop]: 242 mSDtfsCounter, 321 mSDsluCounter, 2333 mSDsCounter, 0 mSdLazyCounter, 2736 mSolverCounterSat, 89 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 324 SdHoareTripleChecker+Valid, 2575 SdHoareTripleChecker+Invalid, 2825 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 89 IncrementalHoareTripleChecker+Valid, 2736 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2022-11-16 16:15:40,849 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [324 Valid, 2575 Invalid, 2825 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [89 Valid, 2736 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2022-11-16 16:15:40,919 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73140 states.