./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/bitvector/s3_srvr_2a_alt.BV.c.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5e519f3a Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ee2a8cb-6409-450d-aa92-d2d352c0a6d2/bin/utaipan-7li7fVZpFI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ee2a8cb-6409-450d-aa92-d2d352c0a6d2/bin/utaipan-7li7fVZpFI/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ee2a8cb-6409-450d-aa92-d2d352c0a6d2/bin/utaipan-7li7fVZpFI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ee2a8cb-6409-450d-aa92-d2d352c0a6d2/bin/utaipan-7li7fVZpFI/config/TaipanReach.xml -i ../../sv-benchmarks/c/bitvector/s3_srvr_2a_alt.BV.c.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ee2a8cb-6409-450d-aa92-d2d352c0a6d2/bin/utaipan-7li7fVZpFI/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ee2a8cb-6409-450d-aa92-d2d352c0a6d2/bin/utaipan-7li7fVZpFI --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash ffdd9c6c8ed32275119d4b9d2dc66b9f80986fea1a039186a702d6c803e62485 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-5e519f3 [2022-11-03 02:01:45,861 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-03 02:01:45,863 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-03 02:01:45,894 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-03 02:01:45,895 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-03 02:01:45,896 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-03 02:01:45,897 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-03 02:01:45,899 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-03 02:01:45,901 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-03 02:01:45,902 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-03 02:01:45,903 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-03 02:01:45,904 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-03 02:01:45,904 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-03 02:01:45,905 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-03 02:01:45,907 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-03 02:01:45,908 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-03 02:01:45,914 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-03 02:01:45,915 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-03 02:01:45,916 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-03 02:01:45,918 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-03 02:01:45,923 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-03 02:01:45,929 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-03 02:01:45,931 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-03 02:01:45,931 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-03 02:01:45,935 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-03 02:01:45,941 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-03 02:01:45,941 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-03 02:01:45,942 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-03 02:01:45,943 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-03 02:01:45,944 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-03 02:01:45,945 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-03 02:01:45,946 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-03 02:01:45,947 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-03 02:01:45,948 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-03 02:01:45,950 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-03 02:01:45,951 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-03 02:01:45,953 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-03 02:01:45,953 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-03 02:01:45,953 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-03 02:01:45,954 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-03 02:01:45,955 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-03 02:01:45,956 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ee2a8cb-6409-450d-aa92-d2d352c0a6d2/bin/utaipan-7li7fVZpFI/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-11-03 02:01:45,989 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-03 02:01:45,989 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-03 02:01:45,990 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-03 02:01:45,990 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-03 02:01:45,991 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-03 02:01:45,992 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-03 02:01:45,992 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-03 02:01:45,992 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-03 02:01:45,992 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-03 02:01:45,993 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-03 02:01:45,994 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-03 02:01:45,994 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-03 02:01:45,995 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-03 02:01:45,995 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-03 02:01:45,995 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-03 02:01:45,995 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-03 02:01:45,996 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-03 02:01:45,996 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-03 02:01:45,997 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-03 02:01:45,997 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-03 02:01:45,997 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-03 02:01:45,997 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-03 02:01:45,997 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-03 02:01:45,999 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-03 02:01:45,999 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-03 02:01:46,000 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-03 02:01:46,000 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-03 02:01:46,000 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-03 02:01:46,000 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-03 02:01:46,001 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-03 02:01:46,001 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-03 02:01:46,001 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-03 02:01:46,002 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 02:01:46,002 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-03 02:01:46,002 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-03 02:01:46,002 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-03 02:01:46,003 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-03 02:01:46,003 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-03 02:01:46,003 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-03 02:01:46,003 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-03 02:01:46,004 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-03 02:01:46,004 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_9ee2a8cb-6409-450d-aa92-d2d352c0a6d2/bin/utaipan-7li7fVZpFI/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ee2a8cb-6409-450d-aa92-d2d352c0a6d2/bin/utaipan-7li7fVZpFI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ffdd9c6c8ed32275119d4b9d2dc66b9f80986fea1a039186a702d6c803e62485 [2022-11-03 02:01:46,307 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-03 02:01:46,340 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-03 02:01:46,355 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-03 02:01:46,357 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-03 02:01:46,358 INFO L275 PluginConnector]: CDTParser initialized [2022-11-03 02:01:46,359 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ee2a8cb-6409-450d-aa92-d2d352c0a6d2/bin/utaipan-7li7fVZpFI/../../sv-benchmarks/c/bitvector/s3_srvr_2a_alt.BV.c.cil.c [2022-11-03 02:01:46,441 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ee2a8cb-6409-450d-aa92-d2d352c0a6d2/bin/utaipan-7li7fVZpFI/data/50f64dd21/7e1bb9ccb8164a638b03c1e9fcb3b524/FLAGa0c5ee7dc [2022-11-03 02:01:46,919 INFO L306 CDTParser]: Found 1 translation units. [2022-11-03 02:01:46,920 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ee2a8cb-6409-450d-aa92-d2d352c0a6d2/sv-benchmarks/c/bitvector/s3_srvr_2a_alt.BV.c.cil.c [2022-11-03 02:01:46,930 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ee2a8cb-6409-450d-aa92-d2d352c0a6d2/bin/utaipan-7li7fVZpFI/data/50f64dd21/7e1bb9ccb8164a638b03c1e9fcb3b524/FLAGa0c5ee7dc [2022-11-03 02:01:47,252 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ee2a8cb-6409-450d-aa92-d2d352c0a6d2/bin/utaipan-7li7fVZpFI/data/50f64dd21/7e1bb9ccb8164a638b03c1e9fcb3b524 [2022-11-03 02:01:47,257 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-03 02:01:47,260 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-03 02:01:47,265 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-03 02:01:47,266 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-03 02:01:47,270 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-03 02:01:47,271 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 02:01:47" (1/1) ... [2022-11-03 02:01:47,273 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7381b014 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:01:47, skipping insertion in model container [2022-11-03 02:01:47,273 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 02:01:47" (1/1) ... [2022-11-03 02:01:47,281 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-03 02:01:47,338 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-03 02:01:47,588 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ee2a8cb-6409-450d-aa92-d2d352c0a6d2/sv-benchmarks/c/bitvector/s3_srvr_2a_alt.BV.c.cil.c[44811,44824] [2022-11-03 02:01:47,596 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 02:01:47,604 INFO L203 MainTranslator]: Completed pre-run [2022-11-03 02:01:47,669 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ee2a8cb-6409-450d-aa92-d2d352c0a6d2/sv-benchmarks/c/bitvector/s3_srvr_2a_alt.BV.c.cil.c[44811,44824] [2022-11-03 02:01:47,684 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 02:01:47,700 INFO L208 MainTranslator]: Completed translation [2022-11-03 02:01:47,701 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:01:47 WrapperNode [2022-11-03 02:01:47,701 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-03 02:01:47,702 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-03 02:01:47,702 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-03 02:01:47,702 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-03 02:01:47,714 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:01:47" (1/1) ... [2022-11-03 02:01:47,745 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:01:47" (1/1) ... [2022-11-03 02:01:47,793 INFO L138 Inliner]: procedures = 15, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 529 [2022-11-03 02:01:47,794 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-03 02:01:47,794 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-03 02:01:47,795 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-03 02:01:47,795 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-03 02:01:47,806 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:01:47" (1/1) ... [2022-11-03 02:01:47,806 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:01:47" (1/1) ... [2022-11-03 02:01:47,810 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:01:47" (1/1) ... [2022-11-03 02:01:47,822 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:01:47" (1/1) ... [2022-11-03 02:01:47,829 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:01:47" (1/1) ... [2022-11-03 02:01:47,836 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:01:47" (1/1) ... [2022-11-03 02:01:47,852 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:01:47" (1/1) ... [2022-11-03 02:01:47,854 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:01:47" (1/1) ... [2022-11-03 02:01:47,857 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-03 02:01:47,858 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-03 02:01:47,858 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-03 02:01:47,859 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-03 02:01:47,860 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:01:47" (1/1) ... [2022-11-03 02:01:47,866 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 02:01:47,877 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ee2a8cb-6409-450d-aa92-d2d352c0a6d2/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:01:47,893 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ee2a8cb-6409-450d-aa92-d2d352c0a6d2/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-03 02:01:47,903 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ee2a8cb-6409-450d-aa92-d2d352c0a6d2/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-03 02:01:47,936 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-03 02:01:47,936 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-03 02:01:47,936 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-03 02:01:47,936 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-03 02:01:48,027 INFO L235 CfgBuilder]: Building ICFG [2022-11-03 02:01:48,029 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-03 02:01:48,048 WARN L816 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-11-03 02:01:48,640 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##90: assume false; [2022-11-03 02:01:48,640 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##91: assume !false; [2022-11-03 02:01:48,640 INFO L276 CfgBuilder]: Performing block encoding [2022-11-03 02:01:48,847 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-03 02:01:48,848 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-03 02:01:48,850 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 02:01:48 BoogieIcfgContainer [2022-11-03 02:01:48,851 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-03 02:01:48,853 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-03 02:01:48,854 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-03 02:01:48,857 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-03 02:01:48,858 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 02:01:47" (1/3) ... [2022-11-03 02:01:48,859 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@e51f96b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 02:01:48, skipping insertion in model container [2022-11-03 02:01:48,859 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:01:47" (2/3) ... [2022-11-03 02:01:48,860 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@e51f96b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 02:01:48, skipping insertion in model container [2022-11-03 02:01:48,860 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 02:01:48" (3/3) ... [2022-11-03 02:01:48,861 INFO L112 eAbstractionObserver]: Analyzing ICFG s3_srvr_2a_alt.BV.c.cil.c [2022-11-03 02:01:48,885 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-03 02:01:48,885 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-03 02:01:48,947 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-03 02:01:48,954 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;@55c7ff6f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-03 02:01:48,954 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-03 02:01:48,959 INFO L276 IsEmpty]: Start isEmpty. Operand has 104 states, 102 states have (on average 1.7843137254901962) internal successors, (182), 103 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:01:48,969 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2022-11-03 02:01:48,970 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:01:48,970 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:01:48,971 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:01:48,977 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:01:48,978 INFO L85 PathProgramCache]: Analyzing trace with hash -2051327227, now seen corresponding path program 1 times [2022-11-03 02:01:48,989 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:01:48,990 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1601275578] [2022-11-03 02:01:48,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:01:48,991 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:01:49,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:01:49,556 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:01:49,557 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:01:49,557 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1601275578] [2022-11-03 02:01:49,558 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1601275578] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:01:49,558 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:01:49,559 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-03 02:01:49,560 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1827865609] [2022-11-03 02:01:49,561 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:01:49,565 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:01:49,566 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:01:49,602 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:01:49,603 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:01:49,607 INFO L87 Difference]: Start difference. First operand has 104 states, 102 states have (on average 1.7843137254901962) internal successors, (182), 103 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 13.0) internal successors, (39), 2 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:01:49,934 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:01:49,934 INFO L93 Difference]: Finished difference Result 248 states and 436 transitions. [2022-11-03 02:01:49,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:01:49,937 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 2 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2022-11-03 02:01:49,937 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:01:49,947 INFO L225 Difference]: With dead ends: 248 [2022-11-03 02:01:49,947 INFO L226 Difference]: Without dead ends: 138 [2022-11-03 02:01:49,950 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:01:49,953 INFO L413 NwaCegarLoop]: 86 mSDtfsCounter, 109 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 121 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 109 SdHoareTripleChecker+Valid, 102 SdHoareTripleChecker+Invalid, 174 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 121 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-03 02:01:49,954 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [109 Valid, 102 Invalid, 174 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 121 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-03 02:01:49,972 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states. [2022-11-03 02:01:49,994 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 133. [2022-11-03 02:01:49,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 133 states, 132 states have (on average 1.5757575757575757) internal successors, (208), 132 states have internal predecessors, (208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:01:49,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 208 transitions. [2022-11-03 02:01:49,998 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 208 transitions. Word has length 39 [2022-11-03 02:01:49,999 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:01:49,999 INFO L495 AbstractCegarLoop]: Abstraction has 133 states and 208 transitions. [2022-11-03 02:01:49,999 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 2 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:01:50,000 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 208 transitions. [2022-11-03 02:01:50,001 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2022-11-03 02:01:50,001 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:01:50,002 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:01:50,002 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-03 02:01:50,002 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:01:50,003 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:01:50,003 INFO L85 PathProgramCache]: Analyzing trace with hash 826329865, now seen corresponding path program 1 times [2022-11-03 02:01:50,003 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:01:50,003 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1442993702] [2022-11-03 02:01:50,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:01:50,004 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:01:50,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:01:50,173 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:01:50,173 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:01:50,173 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1442993702] [2022-11-03 02:01:50,173 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1442993702] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:01:50,174 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:01:50,174 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-03 02:01:50,174 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1206021084] [2022-11-03 02:01:50,174 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:01:50,176 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:01:50,176 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:01:50,176 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:01:50,177 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:01:50,177 INFO L87 Difference]: Start difference. First operand 133 states and 208 transitions. Second operand has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 2 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:01:50,401 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:01:50,402 INFO L93 Difference]: Finished difference Result 310 states and 491 transitions. [2022-11-03 02:01:50,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:01:50,402 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 2 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 40 [2022-11-03 02:01:50,403 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:01:50,404 INFO L225 Difference]: With dead ends: 310 [2022-11-03 02:01:50,404 INFO L226 Difference]: Without dead ends: 177 [2022-11-03 02:01:50,405 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:01:50,406 INFO L413 NwaCegarLoop]: 66 mSDtfsCounter, 81 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 109 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 81 SdHoareTripleChecker+Valid, 78 SdHoareTripleChecker+Invalid, 157 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 109 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-03 02:01:50,407 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [81 Valid, 78 Invalid, 157 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 109 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-03 02:01:50,408 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 177 states. [2022-11-03 02:01:50,449 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 177 to 172. [2022-11-03 02:01:50,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 172 states, 171 states have (on average 1.6140350877192982) internal successors, (276), 171 states have internal predecessors, (276), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:01:50,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 172 states to 172 states and 276 transitions. [2022-11-03 02:01:50,451 INFO L78 Accepts]: Start accepts. Automaton has 172 states and 276 transitions. Word has length 40 [2022-11-03 02:01:50,452 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:01:50,452 INFO L495 AbstractCegarLoop]: Abstraction has 172 states and 276 transitions. [2022-11-03 02:01:50,452 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 2 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:01:50,453 INFO L276 IsEmpty]: Start isEmpty. Operand 172 states and 276 transitions. [2022-11-03 02:01:50,454 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2022-11-03 02:01:50,454 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:01:50,455 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:01:50,455 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-03 02:01:50,455 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:01:50,456 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:01:50,456 INFO L85 PathProgramCache]: Analyzing trace with hash -284624920, now seen corresponding path program 1 times [2022-11-03 02:01:50,456 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:01:50,457 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [320540870] [2022-11-03 02:01:50,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:01:50,457 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:01:50,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:01:50,637 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:01:50,638 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:01:50,638 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [320540870] [2022-11-03 02:01:50,638 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [320540870] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 02:01:50,640 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [808075956] [2022-11-03 02:01:50,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:01:50,640 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:01:50,641 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ee2a8cb-6409-450d-aa92-d2d352c0a6d2/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:01:50,644 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ee2a8cb-6409-450d-aa92-d2d352c0a6d2/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 02:01:50,647 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ee2a8cb-6409-450d-aa92-d2d352c0a6d2/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-03 02:01:50,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:01:50,750 INFO L263 TraceCheckSpWp]: Trace formula consists of 169 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-03 02:01:50,756 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:01:50,897 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:01:50,898 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 02:01:51,026 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-11-03 02:01:51,027 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [808075956] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-03 02:01:51,028 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-11-03 02:01:51,028 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [3, 3] total 4 [2022-11-03 02:01:51,033 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1210405589] [2022-11-03 02:01:51,033 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:01:51,034 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:01:51,034 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:01:51,035 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:01:51,035 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-03 02:01:51,036 INFO L87 Difference]: Start difference. First operand 172 states and 276 transitions. Second operand has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 2 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:01:51,087 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:01:51,087 INFO L93 Difference]: Finished difference Result 341 states and 549 transitions. [2022-11-03 02:01:51,087 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:01:51,088 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 2 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 53 [2022-11-03 02:01:51,088 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:01:51,090 INFO L225 Difference]: With dead ends: 341 [2022-11-03 02:01:51,091 INFO L226 Difference]: Without dead ends: 339 [2022-11-03 02:01:51,091 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 103 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-03 02:01:51,092 INFO L413 NwaCegarLoop]: 125 mSDtfsCounter, 91 mSDsluCounter, 131 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 91 SdHoareTripleChecker+Valid, 248 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-03 02:01:51,093 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [91 Valid, 248 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-03 02:01:51,094 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 339 states. [2022-11-03 02:01:51,112 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 339 to 338. [2022-11-03 02:01:51,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 338 states, 337 states have (on average 1.6201780415430267) internal successors, (546), 337 states have internal predecessors, (546), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:01:51,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 338 states to 338 states and 546 transitions. [2022-11-03 02:01:51,115 INFO L78 Accepts]: Start accepts. Automaton has 338 states and 546 transitions. Word has length 53 [2022-11-03 02:01:51,115 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:01:51,116 INFO L495 AbstractCegarLoop]: Abstraction has 338 states and 546 transitions. [2022-11-03 02:01:51,116 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 2 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:01:51,116 INFO L276 IsEmpty]: Start isEmpty. Operand 338 states and 546 transitions. [2022-11-03 02:01:51,119 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-11-03 02:01:51,119 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:01:51,120 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:01:51,155 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ee2a8cb-6409-450d-aa92-d2d352c0a6d2/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-03 02:01:51,339 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ee2a8cb-6409-450d-aa92-d2d352c0a6d2/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:01:51,339 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:01:51,340 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:01:51,340 INFO L85 PathProgramCache]: Analyzing trace with hash -1146360752, now seen corresponding path program 1 times [2022-11-03 02:01:51,340 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:01:51,340 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1812155248] [2022-11-03 02:01:51,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:01:51,341 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:01:51,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:01:51,480 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 23 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-03 02:01:51,480 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:01:51,480 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1812155248] [2022-11-03 02:01:51,481 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1812155248] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:01:51,481 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:01:51,481 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-03 02:01:51,481 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [522794390] [2022-11-03 02:01:51,481 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:01:51,482 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:01:51,482 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:01:51,482 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:01:51,482 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:01:51,483 INFO L87 Difference]: Start difference. First operand 338 states and 546 transitions. Second operand has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 2 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:01:51,653 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:01:51,653 INFO L93 Difference]: Finished difference Result 548 states and 880 transitions. [2022-11-03 02:01:51,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:01:51,654 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 2 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-11-03 02:01:51,654 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:01:51,656 INFO L225 Difference]: With dead ends: 548 [2022-11-03 02:01:51,656 INFO L226 Difference]: Without dead ends: 378 [2022-11-03 02:01:51,656 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:01:51,658 INFO L413 NwaCegarLoop]: 66 mSDtfsCounter, 103 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 89 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 103 SdHoareTripleChecker+Valid, 74 SdHoareTripleChecker+Invalid, 115 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 89 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 02:01:51,658 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [103 Valid, 74 Invalid, 115 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 89 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 02:01:51,659 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 378 states. [2022-11-03 02:01:51,678 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 378 to 376. [2022-11-03 02:01:51,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 376 states, 375 states have (on average 1.6) internal successors, (600), 375 states have internal predecessors, (600), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:01:51,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 376 states to 376 states and 600 transitions. [2022-11-03 02:01:51,680 INFO L78 Accepts]: Start accepts. Automaton has 376 states and 600 transitions. Word has length 70 [2022-11-03 02:01:51,680 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:01:51,681 INFO L495 AbstractCegarLoop]: Abstraction has 376 states and 600 transitions. [2022-11-03 02:01:51,681 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 2 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:01:51,681 INFO L276 IsEmpty]: Start isEmpty. Operand 376 states and 600 transitions. [2022-11-03 02:01:51,683 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2022-11-03 02:01:51,683 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:01:51,683 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:01:51,683 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-03 02:01:51,684 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:01:51,684 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:01:51,684 INFO L85 PathProgramCache]: Analyzing trace with hash -1255816377, now seen corresponding path program 1 times [2022-11-03 02:01:51,684 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:01:51,685 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1843781500] [2022-11-03 02:01:51,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:01:51,685 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:01:51,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:01:51,770 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-03 02:01:51,770 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:01:51,770 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1843781500] [2022-11-03 02:01:51,770 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1843781500] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:01:51,771 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:01:51,771 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-03 02:01:51,771 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [204413941] [2022-11-03 02:01:51,771 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:01:51,771 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:01:51,772 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:01:51,772 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:01:51,772 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:01:51,772 INFO L87 Difference]: Start difference. First operand 376 states and 600 transitions. Second operand has 3 states, 3 states have (on average 20.0) internal successors, (60), 2 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:01:51,907 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:01:51,907 INFO L93 Difference]: Finished difference Result 567 states and 903 transitions. [2022-11-03 02:01:51,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:01:51,908 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 2 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 71 [2022-11-03 02:01:51,908 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:01:51,910 INFO L225 Difference]: With dead ends: 567 [2022-11-03 02:01:51,910 INFO L226 Difference]: Without dead ends: 378 [2022-11-03 02:01:51,910 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:01:51,911 INFO L413 NwaCegarLoop]: 66 mSDtfsCounter, 102 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 89 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 102 SdHoareTripleChecker+Valid, 74 SdHoareTripleChecker+Invalid, 117 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 89 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 02:01:51,912 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [102 Valid, 74 Invalid, 117 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 89 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 02:01:51,912 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 378 states. [2022-11-03 02:01:51,929 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 378 to 376. [2022-11-03 02:01:51,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 376 states, 375 states have (on average 1.5893333333333333) internal successors, (596), 375 states have internal predecessors, (596), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:01:51,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 376 states to 376 states and 596 transitions. [2022-11-03 02:01:51,931 INFO L78 Accepts]: Start accepts. Automaton has 376 states and 596 transitions. Word has length 71 [2022-11-03 02:01:51,932 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:01:51,932 INFO L495 AbstractCegarLoop]: Abstraction has 376 states and 596 transitions. [2022-11-03 02:01:51,932 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 2 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:01:51,932 INFO L276 IsEmpty]: Start isEmpty. Operand 376 states and 596 transitions. [2022-11-03 02:01:51,934 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2022-11-03 02:01:51,934 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:01:51,935 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:01:51,935 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-03 02:01:51,935 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:01:51,936 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:01:51,936 INFO L85 PathProgramCache]: Analyzing trace with hash -1703980275, now seen corresponding path program 2 times [2022-11-03 02:01:51,936 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:01:51,936 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [716565754] [2022-11-03 02:01:51,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:01:51,937 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:01:51,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:01:52,170 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 32 proven. 39 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:01:52,171 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:01:52,171 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [716565754] [2022-11-03 02:01:52,171 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [716565754] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 02:01:52,171 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1182720163] [2022-11-03 02:01:52,171 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-03 02:01:52,172 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:01:52,172 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ee2a8cb-6409-450d-aa92-d2d352c0a6d2/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:01:52,173 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ee2a8cb-6409-450d-aa92-d2d352c0a6d2/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 02:01:52,201 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ee2a8cb-6409-450d-aa92-d2d352c0a6d2/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-03 02:01:52,279 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-11-03 02:01:52,279 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-03 02:01:52,281 INFO L263 TraceCheckSpWp]: Trace formula consists of 196 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-03 02:01:52,285 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:01:52,437 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 61 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-11-03 02:01:52,437 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:01:52,438 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1182720163] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:01:52,438 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-03 02:01:52,438 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2022-11-03 02:01:52,438 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [700639848] [2022-11-03 02:01:52,438 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:01:52,439 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:01:52,439 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:01:52,439 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:01:52,439 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-03 02:01:52,440 INFO L87 Difference]: Start difference. First operand 376 states and 596 transitions. Second operand has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:01:52,627 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:01:52,627 INFO L93 Difference]: Finished difference Result 616 states and 975 transitions. [2022-11-03 02:01:52,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:01:52,628 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 84 [2022-11-03 02:01:52,628 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:01:52,631 INFO L225 Difference]: With dead ends: 616 [2022-11-03 02:01:52,632 INFO L226 Difference]: Without dead ends: 426 [2022-11-03 02:01:52,632 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 84 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-03 02:01:52,639 INFO L413 NwaCegarLoop]: 134 mSDtfsCounter, 34 mSDsluCounter, 55 mSDsCounter, 0 mSdLazyCounter, 132 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 184 SdHoareTripleChecker+Invalid, 157 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 132 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-03 02:01:52,639 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 184 Invalid, 157 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 132 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-03 02:01:52,641 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 426 states. [2022-11-03 02:01:52,657 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 426 to 414. [2022-11-03 02:01:52,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 414 states, 413 states have (on average 1.5447941888619854) internal successors, (638), 413 states have internal predecessors, (638), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:01:52,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 414 states to 414 states and 638 transitions. [2022-11-03 02:01:52,660 INFO L78 Accepts]: Start accepts. Automaton has 414 states and 638 transitions. Word has length 84 [2022-11-03 02:01:52,661 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:01:52,661 INFO L495 AbstractCegarLoop]: Abstraction has 414 states and 638 transitions. [2022-11-03 02:01:52,661 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:01:52,661 INFO L276 IsEmpty]: Start isEmpty. Operand 414 states and 638 transitions. [2022-11-03 02:01:52,662 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2022-11-03 02:01:52,663 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:01:52,663 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:01:52,706 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ee2a8cb-6409-450d-aa92-d2d352c0a6d2/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-11-03 02:01:52,890 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ee2a8cb-6409-450d-aa92-d2d352c0a6d2/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:01:52,891 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:01:52,891 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:01:52,891 INFO L85 PathProgramCache]: Analyzing trace with hash -1539453684, now seen corresponding path program 1 times [2022-11-03 02:01:52,891 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:01:52,892 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1852050251] [2022-11-03 02:01:52,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:01:52,892 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:01:52,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:01:52,963 INFO L134 CoverageAnalysis]: Checked inductivity of 125 backedges. 90 proven. 0 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2022-11-03 02:01:52,963 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:01:52,964 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1852050251] [2022-11-03 02:01:52,964 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1852050251] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:01:52,964 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:01:52,964 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 02:01:52,964 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [921005108] [2022-11-03 02:01:52,965 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:01:52,965 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:01:52,965 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:01:52,966 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:01:52,966 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:01:52,966 INFO L87 Difference]: Start difference. First operand 414 states and 638 transitions. Second operand has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:01:53,149 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:01:53,149 INFO L93 Difference]: Finished difference Result 946 states and 1486 transitions. [2022-11-03 02:01:53,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:01:53,150 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 103 [2022-11-03 02:01:53,151 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:01:53,155 INFO L225 Difference]: With dead ends: 946 [2022-11-03 02:01:53,155 INFO L226 Difference]: Without dead ends: 534 [2022-11-03 02:01:53,156 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:01:53,157 INFO L413 NwaCegarLoop]: 134 mSDtfsCounter, 67 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 121 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 67 SdHoareTripleChecker+Valid, 150 SdHoareTripleChecker+Invalid, 156 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 121 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-03 02:01:53,157 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [67 Valid, 150 Invalid, 156 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 121 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-03 02:01:53,159 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 534 states. [2022-11-03 02:01:53,180 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 534 to 492. [2022-11-03 02:01:53,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 492 states, 491 states have (on average 1.494908350305499) internal successors, (734), 491 states have internal predecessors, (734), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:01:53,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 492 states to 492 states and 734 transitions. [2022-11-03 02:01:53,183 INFO L78 Accepts]: Start accepts. Automaton has 492 states and 734 transitions. Word has length 103 [2022-11-03 02:01:53,184 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:01:53,184 INFO L495 AbstractCegarLoop]: Abstraction has 492 states and 734 transitions. [2022-11-03 02:01:53,185 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:01:53,185 INFO L276 IsEmpty]: Start isEmpty. Operand 492 states and 734 transitions. [2022-11-03 02:01:53,189 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2022-11-03 02:01:53,190 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:01:53,190 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:01:53,190 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-03 02:01:53,190 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:01:53,191 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:01:53,191 INFO L85 PathProgramCache]: Analyzing trace with hash -1833463162, now seen corresponding path program 1 times [2022-11-03 02:01:53,192 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:01:53,192 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [115174049] [2022-11-03 02:01:53,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:01:53,194 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:01:53,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:01:53,379 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 0 proven. 94 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:01:53,380 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:01:53,380 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [115174049] [2022-11-03 02:01:53,380 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [115174049] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 02:01:53,380 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1687042002] [2022-11-03 02:01:53,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:01:53,382 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:01:53,382 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ee2a8cb-6409-450d-aa92-d2d352c0a6d2/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:01:53,383 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ee2a8cb-6409-450d-aa92-d2d352c0a6d2/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 02:01:53,410 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ee2a8cb-6409-450d-aa92-d2d352c0a6d2/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-03 02:01:53,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:01:53,486 INFO L263 TraceCheckSpWp]: Trace formula consists of 247 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-03 02:01:53,488 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:01:53,700 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 0 proven. 94 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:01:53,700 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 02:01:54,022 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 0 proven. 50 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2022-11-03 02:01:54,022 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1687042002] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 02:01:54,023 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1289911121] [2022-11-03 02:01:54,044 INFO L159 IcfgInterpreter]: Started Sifa with 50 locations of interest [2022-11-03 02:01:54,044 INFO L166 IcfgInterpreter]: Building call graph [2022-11-03 02:01:54,049 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-03 02:01:54,054 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-03 02:01:54,055 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-03 02:02:01,673 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-03 02:02:31,948 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '8277#(and (<= 0 (+ |ULTIMATE.start_ssl3_accept_~s__s3__tmp__reuse_message~0#1| 2147483648)) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~tmp___9~0#1| 2147483648)) (<= |ULTIMATE.start_ssl3_accept_~s__s3__tmp__new_cipher~0#1| 2147483647) (= |ULTIMATE.start_ssl3_accept_~skip~0#1| 0) (<= |ULTIMATE.start_ssl3_accept_~ag_X~0#1| 2147483647) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~ret~0#1| 2147483648)) (<= |ULTIMATE.start_ssl3_accept_~initial_state#1| 8464) (<= |ULTIMATE.start_ssl3_accept_~s__ctx__stats__sess_accept~0#1| 2147483647) (<= |ULTIMATE.start_ssl3_accept_~s__s3__tmp__new_cipher__algo_strength~0#1| 2147483647) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~tmp___10~0#1| 2147483648)) (<= |ULTIMATE.start_ssl3_accept_~s__s3__tmp__next_state___0~0#1| 2147483647) (<= |ULTIMATE.start_ssl3_accept_~tmp~0#1| 2147483647) (<= |ULTIMATE.start_ssl3_accept_~s__info_callback~0#1| 2147483647) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~s__cert~0#1| 2147483648)) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~tmp~0#1| 2147483648)) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~tmp___5~0#1| 2147483648)) (<= |ULTIMATE.start_ssl3_accept_~s__session__peer~0#1| 2147483647) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~s__ctx__info_callback~0#1| 2147483648)) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~cb~0#1| 2147483648)) (<= |ULTIMATE.start_ssl3_accept_~s__s3__tmp__reuse_message~0#1| 2147483647) (<= |ULTIMATE.start_ssl3_accept_#in~initial_state#1| 8464) (<= |ULTIMATE.start_ssl3_accept_~tmp___10~0#1| 2147483647) (<= 0 (+ 2147483648 |ULTIMATE.start_ssl3_accept_~s__hit~0#1|)) (<= |ULTIMATE.start_ssl3_accept_~tmp___4~0#1| 2147483647) (<= |ULTIMATE.start_ssl3_accept_~tmp___3~0#1| 2147483647) (<= |ULTIMATE.start_ssl3_accept_~s__s3__tmp__new_cipher__algorithms~0#1| 2147483647) (<= |ULTIMATE.start_ssl3_accept_~s__hit~0#1| 2147483647) (<= |ULTIMATE.start_ssl3_accept_~s__cert~0#1| 2147483647) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~s__s3__tmp__new_cipher~0#1| 2147483648)) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~s__info_callback~0#1| 2147483648)) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~tmp___4~0#1| 2147483648)) (<= |ULTIMATE.start_ssl3_accept_~tmp___9~0#1| 2147483647) (<= 0 |ULTIMATE.start_ssl3_accept_~got_new_session~0#1|) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~s__debug~0#1| 2147483648)) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~s__cert__pkeys__AT0__privatekey~0#1| 2147483648)) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~tmp___3~0#1| 2147483648)) (= |ULTIMATE.start_ssl3_accept_~blastFlag~0#1| 4) (= 8464 |ULTIMATE.start_main_~s~0#1|) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~s__session__peer~0#1| 2147483648)) (<= 0 (+ 2147483648 |ULTIMATE.start_ssl3_accept_~s__s3__tmp__new_cipher__algo_strength~0#1|)) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~s__init_buf___0~0#1| 2147483648)) (<= 8464 |ULTIMATE.start_ssl3_accept_~initial_state#1|) (<= |ULTIMATE.start_ssl3_accept_~s__options~0#1| 2147483647) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~Time~0#1| 2147483648)) (<= |ULTIMATE.start_ssl3_accept_~Time~0#1| 2147483647) (<= |ULTIMATE.start_ssl3_accept_~s__debug~0#1| 2147483647) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~s__options~0#1| 2147483648)) (<= |ULTIMATE.start_ssl3_accept_~tmp___8~0#1| 2147483647) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~s__ctx__stats__sess_accept_renegotiate~0#1| 2147483648)) (= |ULTIMATE.start_ssl3_accept_~s__state~0#1| 8672) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~ag_X~0#1| 2147483648)) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~num1~0#1| 2147483648)) (<= |ULTIMATE.start_ssl3_accept_~tmp___5~0#1| 2147483647) (= |#NULL.offset| 0) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~tmp___8~0#1| 2147483648)) (<= |ULTIMATE.start_ssl3_accept_~s__init_buf___0~0#1| 2147483647) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~s__ctx__stats__sess_accept~0#1| 2147483648)) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~s__s3__tmp__new_cipher__algorithms~0#1| 2147483648)) (<= |ULTIMATE.start_ssl3_accept_~s__cert__pkeys__AT0__privatekey~0#1| 2147483647) (<= |ULTIMATE.start_ssl3_accept_~num1~0#1| 2147483647) (<= |ULTIMATE.start_ssl3_accept_~s__ctx__stats__sess_accept_renegotiate~0#1| 2147483647) (<= 8464 |ULTIMATE.start_ssl3_accept_#in~initial_state#1|) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~s__s3__tmp__next_state___0~0#1| 2147483648)) (<= 0 |#StackHeapBarrier|) (<= |ULTIMATE.start_ssl3_accept_~ag_Y~0#1| 2147483647) (<= |ULTIMATE.start_ssl3_accept_~ret~0#1| 2147483647) (<= 0 (+ 2147483648 |ULTIMATE.start_ssl3_accept_~ag_Y~0#1|)) (<= |ULTIMATE.start_ssl3_accept_~cb~0#1| 2147483647) (= |#NULL.base| 0) (<= |ULTIMATE.start_ssl3_accept_~s__ctx__info_callback~0#1| 2147483647))' at error location [2022-11-03 02:02:31,948 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-03 02:02:31,948 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-03 02:02:31,948 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 3] total 7 [2022-11-03 02:02:31,949 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [943556919] [2022-11-03 02:02:31,949 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-03 02:02:31,949 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-03 02:02:31,950 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:02:31,950 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-03 02:02:31,951 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=566, Invalid=2296, Unknown=0, NotChecked=0, Total=2862 [2022-11-03 02:02:31,951 INFO L87 Difference]: Start difference. First operand 492 states and 734 transitions. Second operand has 8 states, 8 states have (on average 21.625) internal successors, (173), 7 states have internal predecessors, (173), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:02:32,190 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:02:32,190 INFO L93 Difference]: Finished difference Result 1829 states and 2750 transitions. [2022-11-03 02:02:32,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 02:02:32,191 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 21.625) internal successors, (173), 7 states have internal predecessors, (173), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 108 [2022-11-03 02:02:32,191 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:02:32,198 INFO L225 Difference]: With dead ends: 1829 [2022-11-03 02:02:32,198 INFO L226 Difference]: Without dead ends: 1827 [2022-11-03 02:02:32,200 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 327 GetRequests, 267 SyntacticMatches, 8 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 949 ImplicationChecksByTransitivity, 30.3s TimeCoverageRelationStatistics Valid=566, Invalid=2296, Unknown=0, NotChecked=0, Total=2862 [2022-11-03 02:02:32,201 INFO L413 NwaCegarLoop]: 488 mSDtfsCounter, 1112 mSDsluCounter, 1421 mSDsCounter, 0 mSdLazyCounter, 176 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1112 SdHoareTripleChecker+Valid, 1826 SdHoareTripleChecker+Invalid, 195 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 176 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 02:02:32,201 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1112 Valid, 1826 Invalid, 195 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 176 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 02:02:32,203 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1827 states. [2022-11-03 02:02:32,248 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1827 to 1177. [2022-11-03 02:02:32,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1177 states, 1176 states have (on average 1.4923469387755102) internal successors, (1755), 1176 states have internal predecessors, (1755), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:02:32,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1177 states to 1177 states and 1755 transitions. [2022-11-03 02:02:32,256 INFO L78 Accepts]: Start accepts. Automaton has 1177 states and 1755 transitions. Word has length 108 [2022-11-03 02:02:32,256 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:02:32,256 INFO L495 AbstractCegarLoop]: Abstraction has 1177 states and 1755 transitions. [2022-11-03 02:02:32,256 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 21.625) internal successors, (173), 7 states have internal predecessors, (173), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:02:32,257 INFO L276 IsEmpty]: Start isEmpty. Operand 1177 states and 1755 transitions. [2022-11-03 02:02:32,260 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 203 [2022-11-03 02:02:32,260 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:02:32,260 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:02:32,301 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ee2a8cb-6409-450d-aa92-d2d352c0a6d2/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-03 02:02:32,478 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ee2a8cb-6409-450d-aa92-d2d352c0a6d2/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2022-11-03 02:02:32,479 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:02:32,479 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:02:32,479 INFO L85 PathProgramCache]: Analyzing trace with hash -601193527, now seen corresponding path program 1 times [2022-11-03 02:02:32,479 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:02:32,480 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [435450907] [2022-11-03 02:02:32,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:02:32,480 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:02:32,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:02:32,569 INFO L134 CoverageAnalysis]: Checked inductivity of 456 backedges. 321 proven. 0 refuted. 0 times theorem prover too weak. 135 trivial. 0 not checked. [2022-11-03 02:02:32,569 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:02:32,569 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [435450907] [2022-11-03 02:02:32,570 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [435450907] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:02:32,570 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:02:32,570 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 02:02:32,570 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1379946073] [2022-11-03 02:02:32,570 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:02:32,571 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:02:32,571 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:02:32,571 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:02:32,572 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:02:32,572 INFO L87 Difference]: Start difference. First operand 1177 states and 1755 transitions. Second operand has 3 states, 3 states have (on average 40.333333333333336) internal successors, (121), 3 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:02:32,751 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:02:32,751 INFO L93 Difference]: Finished difference Result 2385 states and 3571 transitions. [2022-11-03 02:02:32,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:02:32,752 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 40.333333333333336) internal successors, (121), 3 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 202 [2022-11-03 02:02:32,752 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:02:32,756 INFO L225 Difference]: With dead ends: 2385 [2022-11-03 02:02:32,756 INFO L226 Difference]: Without dead ends: 1210 [2022-11-03 02:02:32,758 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:02:32,760 INFO L413 NwaCegarLoop]: 134 mSDtfsCounter, 23 mSDsluCounter, 50 mSDsCounter, 0 mSdLazyCounter, 132 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 179 SdHoareTripleChecker+Invalid, 150 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 132 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 02:02:32,761 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 179 Invalid, 150 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 132 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 02:02:32,762 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1210 states. [2022-11-03 02:02:32,799 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1210 to 1207. [2022-11-03 02:02:32,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1207 states, 1206 states have (on average 1.4519071310116087) internal successors, (1751), 1206 states have internal predecessors, (1751), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:02:32,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1207 states to 1207 states and 1751 transitions. [2022-11-03 02:02:32,806 INFO L78 Accepts]: Start accepts. Automaton has 1207 states and 1751 transitions. Word has length 202 [2022-11-03 02:02:32,806 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:02:32,806 INFO L495 AbstractCegarLoop]: Abstraction has 1207 states and 1751 transitions. [2022-11-03 02:02:32,806 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 40.333333333333336) internal successors, (121), 3 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:02:32,807 INFO L276 IsEmpty]: Start isEmpty. Operand 1207 states and 1751 transitions. [2022-11-03 02:02:32,810 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 217 [2022-11-03 02:02:32,811 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:02:32,811 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2022-11-03 02:02:32,811 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-03 02:02:32,812 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:02:32,812 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:02:32,812 INFO L85 PathProgramCache]: Analyzing trace with hash 2123823836, now seen corresponding path program 1 times [2022-11-03 02:02:32,812 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:02:32,812 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1888652269] [2022-11-03 02:02:32,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:02:32,813 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:02:32,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:02:32,917 INFO L134 CoverageAnalysis]: Checked inductivity of 493 backedges. 335 proven. 0 refuted. 0 times theorem prover too weak. 158 trivial. 0 not checked. [2022-11-03 02:02:32,917 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:02:32,917 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1888652269] [2022-11-03 02:02:32,918 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1888652269] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:02:32,918 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:02:32,918 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 02:02:32,918 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [745329941] [2022-11-03 02:02:32,918 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:02:32,919 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:02:32,919 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:02:32,919 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:02:32,920 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:02:32,920 INFO L87 Difference]: Start difference. First operand 1207 states and 1751 transitions. Second operand has 3 states, 3 states have (on average 37.666666666666664) internal successors, (113), 3 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:02:33,097 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:02:33,097 INFO L93 Difference]: Finished difference Result 2605 states and 3827 transitions. [2022-11-03 02:02:33,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:02:33,098 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 37.666666666666664) internal successors, (113), 3 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 216 [2022-11-03 02:02:33,099 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:02:33,103 INFO L225 Difference]: With dead ends: 2605 [2022-11-03 02:02:33,103 INFO L226 Difference]: Without dead ends: 1352 [2022-11-03 02:02:33,105 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:02:33,106 INFO L413 NwaCegarLoop]: 126 mSDtfsCounter, 32 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 127 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 173 SdHoareTripleChecker+Invalid, 156 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 127 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 02:02:33,106 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [32 Valid, 173 Invalid, 156 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 127 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 02:02:33,108 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1352 states. [2022-11-03 02:02:33,146 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1352 to 1352. [2022-11-03 02:02:33,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1352 states, 1351 states have (on average 1.4145077720207253) internal successors, (1911), 1351 states have internal predecessors, (1911), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:02:33,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1352 states to 1352 states and 1911 transitions. [2022-11-03 02:02:33,153 INFO L78 Accepts]: Start accepts. Automaton has 1352 states and 1911 transitions. Word has length 216 [2022-11-03 02:02:33,153 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:02:33,153 INFO L495 AbstractCegarLoop]: Abstraction has 1352 states and 1911 transitions. [2022-11-03 02:02:33,153 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 37.666666666666664) internal successors, (113), 3 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:02:33,154 INFO L276 IsEmpty]: Start isEmpty. Operand 1352 states and 1911 transitions. [2022-11-03 02:02:33,157 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 230 [2022-11-03 02:02:33,158 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:02:33,158 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:02:33,158 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-03 02:02:33,158 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:02:33,159 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:02:33,159 INFO L85 PathProgramCache]: Analyzing trace with hash 652959127, now seen corresponding path program 1 times [2022-11-03 02:02:33,159 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:02:33,159 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [404109596] [2022-11-03 02:02:33,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:02:33,160 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:02:33,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:02:33,377 INFO L134 CoverageAnalysis]: Checked inductivity of 549 backedges. 393 proven. 95 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2022-11-03 02:02:33,377 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:02:33,378 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [404109596] [2022-11-03 02:02:33,378 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [404109596] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 02:02:33,378 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1628621920] [2022-11-03 02:02:33,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:02:33,378 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:02:33,379 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ee2a8cb-6409-450d-aa92-d2d352c0a6d2/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:02:33,380 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ee2a8cb-6409-450d-aa92-d2d352c0a6d2/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 02:02:33,410 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ee2a8cb-6409-450d-aa92-d2d352c0a6d2/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-03 02:02:33,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:02:33,501 INFO L263 TraceCheckSpWp]: Trace formula consists of 406 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-03 02:02:33,505 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:02:33,807 INFO L134 CoverageAnalysis]: Checked inductivity of 549 backedges. 376 proven. 112 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2022-11-03 02:02:33,807 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 02:02:33,895 INFO L134 CoverageAnalysis]: Checked inductivity of 549 backedges. 406 proven. 15 refuted. 0 times theorem prover too weak. 128 trivial. 0 not checked. [2022-11-03 02:02:33,896 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1628621920] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 02:02:33,896 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2081447243] [2022-11-03 02:02:33,899 INFO L159 IcfgInterpreter]: Started Sifa with 53 locations of interest [2022-11-03 02:02:33,899 INFO L166 IcfgInterpreter]: Building call graph [2022-11-03 02:02:33,900 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-03 02:02:33,900 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-03 02:02:33,900 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-03 02:02:43,336 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-03 02:03:18,625 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '21944#(and (<= 0 (+ |ULTIMATE.start_ssl3_accept_~s__s3__tmp__reuse_message~0#1| 2147483648)) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~tmp___9~0#1| 2147483648)) (<= |ULTIMATE.start_ssl3_accept_~s__s3__tmp__new_cipher~0#1| 2147483647) (= |ULTIMATE.start_ssl3_accept_~skip~0#1| 0) (<= |ULTIMATE.start_ssl3_accept_~ag_X~0#1| 2147483647) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~ret~0#1| 2147483648)) (<= |ULTIMATE.start_ssl3_accept_~initial_state#1| 8464) (<= |ULTIMATE.start_ssl3_accept_~s__ctx__stats__sess_accept~0#1| 2147483647) (<= |ULTIMATE.start_ssl3_accept_~s__s3__tmp__new_cipher__algo_strength~0#1| 2147483647) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~tmp___10~0#1| 2147483648)) (<= |ULTIMATE.start_ssl3_accept_~s__s3__tmp__next_state___0~0#1| 2147483647) (<= |ULTIMATE.start_ssl3_accept_~tmp~0#1| 2147483647) (<= |ULTIMATE.start_ssl3_accept_~s__info_callback~0#1| 2147483647) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~s__cert~0#1| 2147483648)) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~tmp~0#1| 2147483648)) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~tmp___5~0#1| 2147483648)) (<= |ULTIMATE.start_ssl3_accept_~s__session__peer~0#1| 2147483647) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~s__ctx__info_callback~0#1| 2147483648)) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~cb~0#1| 2147483648)) (<= |ULTIMATE.start_ssl3_accept_~s__s3__tmp__reuse_message~0#1| 2147483647) (<= |ULTIMATE.start_ssl3_accept_#in~initial_state#1| 8464) (<= |ULTIMATE.start_ssl3_accept_~tmp___10~0#1| 2147483647) (<= 0 (+ 2147483648 |ULTIMATE.start_ssl3_accept_~s__hit~0#1|)) (<= |ULTIMATE.start_ssl3_accept_~tmp___4~0#1| 2147483647) (<= |ULTIMATE.start_ssl3_accept_~tmp___3~0#1| 2147483647) (<= |ULTIMATE.start_ssl3_accept_~s__s3__tmp__new_cipher__algorithms~0#1| 2147483647) (<= |ULTIMATE.start_ssl3_accept_~s__hit~0#1| 2147483647) (<= |ULTIMATE.start_ssl3_accept_~s__cert~0#1| 2147483647) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~s__s3__tmp__new_cipher~0#1| 2147483648)) (<= |#NULL.offset| 0) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~s__info_callback~0#1| 2147483648)) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~tmp___4~0#1| 2147483648)) (<= |ULTIMATE.start_ssl3_accept_~tmp___9~0#1| 2147483647) (<= 0 |ULTIMATE.start_ssl3_accept_~got_new_session~0#1|) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~s__debug~0#1| 2147483648)) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~s__cert__pkeys__AT0__privatekey~0#1| 2147483648)) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~tmp___3~0#1| 2147483648)) (= |ULTIMATE.start_ssl3_accept_~blastFlag~0#1| 4) (= 8464 |ULTIMATE.start_main_~s~0#1|) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~s__session__peer~0#1| 2147483648)) (<= 0 (+ 2147483648 |ULTIMATE.start_ssl3_accept_~s__s3__tmp__new_cipher__algo_strength~0#1|)) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~s__init_buf___0~0#1| 2147483648)) (<= 8464 |ULTIMATE.start_ssl3_accept_~initial_state#1|) (<= |ULTIMATE.start_ssl3_accept_~s__options~0#1| 2147483647) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~Time~0#1| 2147483648)) (<= |ULTIMATE.start_ssl3_accept_~Time~0#1| 2147483647) (<= |ULTIMATE.start_ssl3_accept_~s__debug~0#1| 2147483647) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~s__options~0#1| 2147483648)) (<= |ULTIMATE.start_ssl3_accept_~tmp___8~0#1| 2147483647) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~s__ctx__stats__sess_accept_renegotiate~0#1| 2147483648)) (= |ULTIMATE.start_ssl3_accept_~s__state~0#1| 8672) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~ag_X~0#1| 2147483648)) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~num1~0#1| 2147483648)) (<= |ULTIMATE.start_ssl3_accept_~tmp___5~0#1| 2147483647) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~tmp___8~0#1| 2147483648)) (<= |ULTIMATE.start_ssl3_accept_~s__init_buf___0~0#1| 2147483647) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~s__ctx__stats__sess_accept~0#1| 2147483648)) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~s__s3__tmp__new_cipher__algorithms~0#1| 2147483648)) (<= |ULTIMATE.start_ssl3_accept_~s__cert__pkeys__AT0__privatekey~0#1| 2147483647) (<= 0 |#NULL.offset|) (<= |ULTIMATE.start_ssl3_accept_~num1~0#1| 2147483647) (<= |ULTIMATE.start_ssl3_accept_~s__ctx__stats__sess_accept_renegotiate~0#1| 2147483647) (<= 8464 |ULTIMATE.start_ssl3_accept_#in~initial_state#1|) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~s__s3__tmp__next_state___0~0#1| 2147483648)) (<= 0 |#StackHeapBarrier|) (<= |ULTIMATE.start_ssl3_accept_~ag_Y~0#1| 2147483647) (<= |ULTIMATE.start_ssl3_accept_~ret~0#1| 2147483647) (<= 0 (+ 2147483648 |ULTIMATE.start_ssl3_accept_~ag_Y~0#1|)) (<= |ULTIMATE.start_ssl3_accept_~cb~0#1| 2147483647) (= |#NULL.base| 0) (<= |ULTIMATE.start_ssl3_accept_~s__ctx__info_callback~0#1| 2147483647))' at error location [2022-11-03 02:03:18,625 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-03 02:03:18,625 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-03 02:03:18,626 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 4] total 11 [2022-11-03 02:03:18,626 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [263152164] [2022-11-03 02:03:18,626 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-03 02:03:18,627 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-03 02:03:18,627 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:03:18,627 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-03 02:03:18,628 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=677, Invalid=2745, Unknown=0, NotChecked=0, Total=3422 [2022-11-03 02:03:18,628 INFO L87 Difference]: Start difference. First operand 1352 states and 1911 transitions. Second operand has 11 states, 11 states have (on average 27.727272727272727) internal successors, (305), 11 states have internal predecessors, (305), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:03:20,916 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:03:20,917 INFO L93 Difference]: Finished difference Result 5963 states and 8303 transitions. [2022-11-03 02:03:20,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2022-11-03 02:03:20,917 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 27.727272727272727) internal successors, (305), 11 states have internal predecessors, (305), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 229 [2022-11-03 02:03:20,918 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:03:20,935 INFO L225 Difference]: With dead ends: 5963 [2022-11-03 02:03:20,935 INFO L226 Difference]: Without dead ends: 4613 [2022-11-03 02:03:20,939 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 724 GetRequests, 633 SyntacticMatches, 16 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2822 ImplicationChecksByTransitivity, 35.7s TimeCoverageRelationStatistics Valid=884, Invalid=4968, Unknown=0, NotChecked=0, Total=5852 [2022-11-03 02:03:20,940 INFO L413 NwaCegarLoop]: 266 mSDtfsCounter, 772 mSDsluCounter, 1177 mSDsCounter, 0 mSdLazyCounter, 2527 mSolverCounterSat, 102 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 772 SdHoareTripleChecker+Valid, 1352 SdHoareTripleChecker+Invalid, 2629 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 102 IncrementalHoareTripleChecker+Valid, 2527 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-11-03 02:03:20,940 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [772 Valid, 1352 Invalid, 2629 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [102 Valid, 2527 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-11-03 02:03:20,945 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4613 states. [2022-11-03 02:03:21,086 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4613 to 3788. [2022-11-03 02:03:21,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3788 states, 3787 states have (on average 1.3797200950620543) internal successors, (5225), 3787 states have internal predecessors, (5225), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:03:21,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3788 states to 3788 states and 5225 transitions. [2022-11-03 02:03:21,102 INFO L78 Accepts]: Start accepts. Automaton has 3788 states and 5225 transitions. Word has length 229 [2022-11-03 02:03:21,102 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:03:21,103 INFO L495 AbstractCegarLoop]: Abstraction has 3788 states and 5225 transitions. [2022-11-03 02:03:21,103 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 27.727272727272727) internal successors, (305), 11 states have internal predecessors, (305), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:03:21,103 INFO L276 IsEmpty]: Start isEmpty. Operand 3788 states and 5225 transitions. [2022-11-03 02:03:21,111 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 250 [2022-11-03 02:03:21,111 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:03:21,112 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 7, 6, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:03:21,147 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ee2a8cb-6409-450d-aa92-d2d352c0a6d2/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-03 02:03:21,338 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ee2a8cb-6409-450d-aa92-d2d352c0a6d2/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2022-11-03 02:03:21,339 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:03:21,339 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:03:21,339 INFO L85 PathProgramCache]: Analyzing trace with hash 1262054385, now seen corresponding path program 1 times [2022-11-03 02:03:21,339 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:03:21,340 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1017768530] [2022-11-03 02:03:21,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:03:21,340 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:03:21,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:03:21,434 INFO L134 CoverageAnalysis]: Checked inductivity of 680 backedges. 345 proven. 0 refuted. 0 times theorem prover too weak. 335 trivial. 0 not checked. [2022-11-03 02:03:21,435 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:03:21,435 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1017768530] [2022-11-03 02:03:21,435 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1017768530] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:03:21,435 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:03:21,435 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 02:03:21,438 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [637994098] [2022-11-03 02:03:21,438 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:03:21,438 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:03:21,439 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:03:21,439 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:03:21,439 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:03:21,439 INFO L87 Difference]: Start difference. First operand 3788 states and 5225 transitions. Second operand has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 3 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:03:21,698 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:03:21,698 INFO L93 Difference]: Finished difference Result 8036 states and 11050 transitions. [2022-11-03 02:03:21,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:03:21,699 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 3 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 249 [2022-11-03 02:03:21,699 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:03:21,713 INFO L225 Difference]: With dead ends: 8036 [2022-11-03 02:03:21,713 INFO L226 Difference]: Without dead ends: 4250 [2022-11-03 02:03:21,717 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:03:21,718 INFO L413 NwaCegarLoop]: 134 mSDtfsCounter, 21 mSDsluCounter, 55 mSDsCounter, 0 mSdLazyCounter, 116 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 184 SdHoareTripleChecker+Invalid, 118 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 116 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 02:03:21,719 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 184 Invalid, 118 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 116 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 02:03:21,723 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4250 states. [2022-11-03 02:03:21,877 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4250 to 4110. [2022-11-03 02:03:21,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4110 states, 4109 states have (on average 1.3601849598442444) internal successors, (5589), 4109 states have internal predecessors, (5589), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:03:21,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4110 states to 4110 states and 5589 transitions. [2022-11-03 02:03:21,894 INFO L78 Accepts]: Start accepts. Automaton has 4110 states and 5589 transitions. Word has length 249 [2022-11-03 02:03:21,894 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:03:21,894 INFO L495 AbstractCegarLoop]: Abstraction has 4110 states and 5589 transitions. [2022-11-03 02:03:21,894 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 3 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:03:21,895 INFO L276 IsEmpty]: Start isEmpty. Operand 4110 states and 5589 transitions. [2022-11-03 02:03:21,906 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 274 [2022-11-03 02:03:21,906 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:03:21,907 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 8, 7, 6, 6, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:03:21,907 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-03 02:03:21,907 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:03:21,907 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:03:21,908 INFO L85 PathProgramCache]: Analyzing trace with hash -1692721789, now seen corresponding path program 1 times [2022-11-03 02:03:21,908 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:03:21,908 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [347539606] [2022-11-03 02:03:21,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:03:21,908 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:03:21,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:03:21,992 INFO L134 CoverageAnalysis]: Checked inductivity of 833 backedges. 464 proven. 0 refuted. 0 times theorem prover too weak. 369 trivial. 0 not checked. [2022-11-03 02:03:21,993 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:03:21,993 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [347539606] [2022-11-03 02:03:21,993 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [347539606] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:03:21,993 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:03:21,993 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 02:03:21,993 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1321633040] [2022-11-03 02:03:21,994 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:03:21,994 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:03:21,994 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:03:21,995 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:03:21,995 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:03:21,995 INFO L87 Difference]: Start difference. First operand 4110 states and 5589 transitions. Second operand has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:03:22,237 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:03:22,237 INFO L93 Difference]: Finished difference Result 8654 states and 11766 transitions. [2022-11-03 02:03:22,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:03:22,238 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 273 [2022-11-03 02:03:22,238 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:03:22,252 INFO L225 Difference]: With dead ends: 8654 [2022-11-03 02:03:22,253 INFO L226 Difference]: Without dead ends: 4546 [2022-11-03 02:03:22,258 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:03:22,259 INFO L413 NwaCegarLoop]: 134 mSDtfsCounter, 14 mSDsluCounter, 55 mSDsCounter, 0 mSdLazyCounter, 118 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 184 SdHoareTripleChecker+Invalid, 122 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 118 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 02:03:22,259 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 184 Invalid, 122 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 118 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 02:03:22,265 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4546 states. [2022-11-03 02:03:22,423 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4546 to 4460. [2022-11-03 02:03:22,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4460 states, 4459 states have (on average 1.3413321372505047) internal successors, (5981), 4459 states have internal predecessors, (5981), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:03:22,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4460 states to 4460 states and 5981 transitions. [2022-11-03 02:03:22,442 INFO L78 Accepts]: Start accepts. Automaton has 4460 states and 5981 transitions. Word has length 273 [2022-11-03 02:03:22,442 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:03:22,442 INFO L495 AbstractCegarLoop]: Abstraction has 4460 states and 5981 transitions. [2022-11-03 02:03:22,443 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:03:22,443 INFO L276 IsEmpty]: Start isEmpty. Operand 4460 states and 5981 transitions. [2022-11-03 02:03:22,474 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 278 [2022-11-03 02:03:22,475 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:03:22,476 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 8, 8, 8, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:03:22,476 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-03 02:03:22,476 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:03:22,476 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:03:22,477 INFO L85 PathProgramCache]: Analyzing trace with hash -1374681020, now seen corresponding path program 1 times [2022-11-03 02:03:22,477 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:03:22,477 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1573898887] [2022-11-03 02:03:22,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:03:22,477 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:03:22,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:03:22,723 INFO L134 CoverageAnalysis]: Checked inductivity of 850 backedges. 606 proven. 48 refuted. 0 times theorem prover too weak. 196 trivial. 0 not checked. [2022-11-03 02:03:22,723 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:03:22,724 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1573898887] [2022-11-03 02:03:22,724 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1573898887] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 02:03:22,724 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1752006819] [2022-11-03 02:03:22,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:03:22,724 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:03:22,725 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ee2a8cb-6409-450d-aa92-d2d352c0a6d2/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:03:22,727 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ee2a8cb-6409-450d-aa92-d2d352c0a6d2/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 02:03:22,739 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ee2a8cb-6409-450d-aa92-d2d352c0a6d2/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-03 02:03:22,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:03:22,857 INFO L263 TraceCheckSpWp]: Trace formula consists of 478 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-03 02:03:22,861 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:03:23,188 INFO L134 CoverageAnalysis]: Checked inductivity of 850 backedges. 555 proven. 99 refuted. 0 times theorem prover too weak. 196 trivial. 0 not checked. [2022-11-03 02:03:23,188 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 02:03:23,445 INFO L134 CoverageAnalysis]: Checked inductivity of 850 backedges. 606 proven. 48 refuted. 0 times theorem prover too weak. 196 trivial. 0 not checked. [2022-11-03 02:03:23,445 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1752006819] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 02:03:23,445 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [779247054] [2022-11-03 02:03:23,448 INFO L159 IcfgInterpreter]: Started Sifa with 55 locations of interest [2022-11-03 02:03:23,448 INFO L166 IcfgInterpreter]: Building call graph [2022-11-03 02:03:23,449 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-03 02:03:23,449 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-03 02:03:23,449 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-03 02:03:31,654 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-03 02:04:08,567 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '64170#(and (<= 0 (+ |ULTIMATE.start_ssl3_accept_~s__s3__tmp__reuse_message~0#1| 2147483648)) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~tmp___9~0#1| 2147483648)) (<= |ULTIMATE.start_ssl3_accept_~s__s3__tmp__new_cipher~0#1| 2147483647) (= |ULTIMATE.start_ssl3_accept_~skip~0#1| 0) (<= |ULTIMATE.start_ssl3_accept_~ag_X~0#1| 2147483647) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~ret~0#1| 2147483648)) (<= |ULTIMATE.start_ssl3_accept_~initial_state#1| 8464) (<= |ULTIMATE.start_ssl3_accept_~s__ctx__stats__sess_accept~0#1| 2147483647) (<= |ULTIMATE.start_ssl3_accept_~s__s3__tmp__new_cipher__algo_strength~0#1| 2147483647) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~tmp___10~0#1| 2147483648)) (<= |ULTIMATE.start_ssl3_accept_~s__s3__tmp__next_state___0~0#1| 2147483647) (<= |ULTIMATE.start_ssl3_accept_~tmp~0#1| 2147483647) (<= |ULTIMATE.start_ssl3_accept_~s__info_callback~0#1| 2147483647) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~s__cert~0#1| 2147483648)) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~tmp~0#1| 2147483648)) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~tmp___5~0#1| 2147483648)) (<= |ULTIMATE.start_ssl3_accept_~s__session__peer~0#1| 2147483647) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~s__ctx__info_callback~0#1| 2147483648)) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~cb~0#1| 2147483648)) (<= |ULTIMATE.start_ssl3_accept_~s__s3__tmp__reuse_message~0#1| 2147483647) (<= |ULTIMATE.start_ssl3_accept_#in~initial_state#1| 8464) (<= |ULTIMATE.start_ssl3_accept_~tmp___10~0#1| 2147483647) (<= 0 (+ 2147483648 |ULTIMATE.start_ssl3_accept_~s__hit~0#1|)) (<= |ULTIMATE.start_ssl3_accept_~tmp___4~0#1| 2147483647) (<= |ULTIMATE.start_ssl3_accept_~tmp___3~0#1| 2147483647) (<= |ULTIMATE.start_ssl3_accept_~s__s3__tmp__new_cipher__algorithms~0#1| 2147483647) (<= |ULTIMATE.start_ssl3_accept_~s__hit~0#1| 2147483647) (<= |ULTIMATE.start_ssl3_accept_~s__cert~0#1| 2147483647) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~s__s3__tmp__new_cipher~0#1| 2147483648)) (<= |#NULL.offset| 0) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~s__info_callback~0#1| 2147483648)) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~tmp___4~0#1| 2147483648)) (<= |ULTIMATE.start_ssl3_accept_~tmp___9~0#1| 2147483647) (<= 0 |ULTIMATE.start_ssl3_accept_~got_new_session~0#1|) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~s__debug~0#1| 2147483648)) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~s__cert__pkeys__AT0__privatekey~0#1| 2147483648)) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~tmp___3~0#1| 2147483648)) (= |ULTIMATE.start_ssl3_accept_~blastFlag~0#1| 4) (= 8464 |ULTIMATE.start_main_~s~0#1|) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~s__session__peer~0#1| 2147483648)) (<= 0 (+ 2147483648 |ULTIMATE.start_ssl3_accept_~s__s3__tmp__new_cipher__algo_strength~0#1|)) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~s__init_buf___0~0#1| 2147483648)) (<= 8464 |ULTIMATE.start_ssl3_accept_~initial_state#1|) (<= |ULTIMATE.start_ssl3_accept_~s__options~0#1| 2147483647) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~Time~0#1| 2147483648)) (<= |ULTIMATE.start_ssl3_accept_~Time~0#1| 2147483647) (<= |ULTIMATE.start_ssl3_accept_~s__debug~0#1| 2147483647) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~s__options~0#1| 2147483648)) (<= |ULTIMATE.start_ssl3_accept_~tmp___8~0#1| 2147483647) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~s__ctx__stats__sess_accept_renegotiate~0#1| 2147483648)) (= |ULTIMATE.start_ssl3_accept_~s__state~0#1| 8672) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~ag_X~0#1| 2147483648)) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~num1~0#1| 2147483648)) (<= |ULTIMATE.start_ssl3_accept_~tmp___5~0#1| 2147483647) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~tmp___8~0#1| 2147483648)) (<= |ULTIMATE.start_ssl3_accept_~s__init_buf___0~0#1| 2147483647) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~s__ctx__stats__sess_accept~0#1| 2147483648)) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~s__s3__tmp__new_cipher__algorithms~0#1| 2147483648)) (<= |ULTIMATE.start_ssl3_accept_~s__cert__pkeys__AT0__privatekey~0#1| 2147483647) (<= 0 |#NULL.offset|) (<= |ULTIMATE.start_ssl3_accept_~num1~0#1| 2147483647) (<= |ULTIMATE.start_ssl3_accept_~s__ctx__stats__sess_accept_renegotiate~0#1| 2147483647) (<= 8464 |ULTIMATE.start_ssl3_accept_#in~initial_state#1|) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~s__s3__tmp__next_state___0~0#1| 2147483648)) (<= 0 |#StackHeapBarrier|) (<= |ULTIMATE.start_ssl3_accept_~ag_Y~0#1| 2147483647) (<= |ULTIMATE.start_ssl3_accept_~ret~0#1| 2147483647) (<= 0 (+ 2147483648 |ULTIMATE.start_ssl3_accept_~ag_Y~0#1|)) (<= |ULTIMATE.start_ssl3_accept_~cb~0#1| 2147483647) (= |#NULL.base| 0) (<= |ULTIMATE.start_ssl3_accept_~s__ctx__info_callback~0#1| 2147483647))' at error location [2022-11-03 02:04:08,567 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-03 02:04:08,567 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-03 02:04:08,567 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 8 [2022-11-03 02:04:08,567 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [667902042] [2022-11-03 02:04:08,568 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-03 02:04:08,568 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-03 02:04:08,568 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:04:08,569 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-03 02:04:08,570 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=658, Invalid=2648, Unknown=0, NotChecked=0, Total=3306 [2022-11-03 02:04:08,570 INFO L87 Difference]: Start difference. First operand 4460 states and 5981 transitions. Second operand has 8 states, 8 states have (on average 24.25) internal successors, (194), 8 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:04:09,378 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:04:09,378 INFO L93 Difference]: Finished difference Result 7639 states and 10193 transitions. [2022-11-03 02:04:09,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-03 02:04:09,379 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 24.25) internal successors, (194), 8 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 277 [2022-11-03 02:04:09,379 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:04:09,387 INFO L225 Difference]: With dead ends: 7639 [2022-11-03 02:04:09,388 INFO L226 Difference]: Without dead ends: 2603 [2022-11-03 02:04:09,394 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 839 GetRequests, 760 SyntacticMatches, 20 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1799 ImplicationChecksByTransitivity, 36.9s TimeCoverageRelationStatistics Valid=676, Invalid=2984, Unknown=0, NotChecked=0, Total=3660 [2022-11-03 02:04:09,394 INFO L413 NwaCegarLoop]: 198 mSDtfsCounter, 136 mSDsluCounter, 362 mSDsCounter, 0 mSdLazyCounter, 922 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 136 SdHoareTripleChecker+Valid, 538 SdHoareTripleChecker+Invalid, 958 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 922 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-03 02:04:09,395 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [136 Valid, 538 Invalid, 958 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 922 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-03 02:04:09,397 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2603 states. [2022-11-03 02:04:09,479 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2603 to 2562. [2022-11-03 02:04:09,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2562 states, 2561 states have (on average 1.350253807106599) internal successors, (3458), 2561 states have internal predecessors, (3458), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:04:09,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2562 states to 2562 states and 3458 transitions. [2022-11-03 02:04:09,498 INFO L78 Accepts]: Start accepts. Automaton has 2562 states and 3458 transitions. Word has length 277 [2022-11-03 02:04:09,498 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:04:09,498 INFO L495 AbstractCegarLoop]: Abstraction has 2562 states and 3458 transitions. [2022-11-03 02:04:09,498 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 24.25) internal successors, (194), 8 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:04:09,499 INFO L276 IsEmpty]: Start isEmpty. Operand 2562 states and 3458 transitions. [2022-11-03 02:04:09,506 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 296 [2022-11-03 02:04:09,506 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:04:09,506 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 11, 11, 11, 11, 11, 11, 11, 10, 10, 10, 10, 10, 9, 8, 7, 7, 6, 6, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:04:09,546 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ee2a8cb-6409-450d-aa92-d2d352c0a6d2/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-03 02:04:09,730 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ee2a8cb-6409-450d-aa92-d2d352c0a6d2/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:04:09,731 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:04:09,731 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:04:09,731 INFO L85 PathProgramCache]: Analyzing trace with hash -540614937, now seen corresponding path program 1 times [2022-11-03 02:04:09,731 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:04:09,731 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1150041811] [2022-11-03 02:04:09,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:04:09,732 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:04:09,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:04:09,823 INFO L134 CoverageAnalysis]: Checked inductivity of 1015 backedges. 593 proven. 0 refuted. 0 times theorem prover too weak. 422 trivial. 0 not checked. [2022-11-03 02:04:09,823 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:04:09,823 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1150041811] [2022-11-03 02:04:09,824 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1150041811] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:04:09,824 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:04:09,824 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 02:04:09,824 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1780027359] [2022-11-03 02:04:09,824 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:04:09,825 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:04:09,825 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:04:09,825 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:04:09,825 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:04:09,826 INFO L87 Difference]: Start difference. First operand 2562 states and 3458 transitions. Second operand has 3 states, 3 states have (on average 38.0) internal successors, (114), 3 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:04:10,010 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:04:10,010 INFO L93 Difference]: Finished difference Result 5157 states and 6921 transitions. [2022-11-03 02:04:10,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:04:10,011 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 38.0) internal successors, (114), 3 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 295 [2022-11-03 02:04:10,013 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:04:10,031 INFO L225 Difference]: With dead ends: 5157 [2022-11-03 02:04:10,036 INFO L226 Difference]: Without dead ends: 2597 [2022-11-03 02:04:10,040 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:04:10,043 INFO L413 NwaCegarLoop]: 134 mSDtfsCounter, 7 mSDsluCounter, 55 mSDsCounter, 0 mSdLazyCounter, 116 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 184 SdHoareTripleChecker+Invalid, 124 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 116 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 02:04:10,044 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 184 Invalid, 124 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 116 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 02:04:10,046 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2597 states. [2022-11-03 02:04:10,122 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2597 to 2262. [2022-11-03 02:04:10,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2262 states, 2261 states have (on average 1.3361344537815125) internal successors, (3021), 2261 states have internal predecessors, (3021), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:04:10,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2262 states to 2262 states and 3021 transitions. [2022-11-03 02:04:10,131 INFO L78 Accepts]: Start accepts. Automaton has 2262 states and 3021 transitions. Word has length 295 [2022-11-03 02:04:10,131 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:04:10,132 INFO L495 AbstractCegarLoop]: Abstraction has 2262 states and 3021 transitions. [2022-11-03 02:04:10,132 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 38.0) internal successors, (114), 3 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:04:10,132 INFO L276 IsEmpty]: Start isEmpty. Operand 2262 states and 3021 transitions. [2022-11-03 02:04:10,139 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 327 [2022-11-03 02:04:10,139 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:04:10,140 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 12, 12, 12, 12, 12, 12, 11, 11, 11, 11, 11, 10, 9, 8, 8, 7, 7, 6, 6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:04:10,140 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-11-03 02:04:10,140 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:04:10,140 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:04:10,141 INFO L85 PathProgramCache]: Analyzing trace with hash -2060393185, now seen corresponding path program 1 times [2022-11-03 02:04:10,141 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:04:10,141 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [398311648] [2022-11-03 02:04:10,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:04:10,141 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:04:10,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:04:10,249 INFO L134 CoverageAnalysis]: Checked inductivity of 1240 backedges. 651 proven. 0 refuted. 0 times theorem prover too weak. 589 trivial. 0 not checked. [2022-11-03 02:04:10,249 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:04:10,249 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [398311648] [2022-11-03 02:04:10,250 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [398311648] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:04:10,250 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:04:10,250 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 02:04:10,250 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [148446206] [2022-11-03 02:04:10,250 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:04:10,251 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:04:10,251 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:04:10,252 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:04:10,252 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:04:10,252 INFO L87 Difference]: Start difference. First operand 2262 states and 3021 transitions. Second operand has 3 states, 3 states have (on average 37.0) internal successors, (111), 3 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:04:10,467 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:04:10,468 INFO L93 Difference]: Finished difference Result 6086 states and 8042 transitions. [2022-11-03 02:04:10,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:04:10,468 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 37.0) internal successors, (111), 3 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 326 [2022-11-03 02:04:10,469 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:04:10,483 INFO L225 Difference]: With dead ends: 6086 [2022-11-03 02:04:10,483 INFO L226 Difference]: Without dead ends: 4169 [2022-11-03 02:04:10,487 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:04:10,487 INFO L413 NwaCegarLoop]: 241 mSDtfsCounter, 100 mSDsluCounter, 129 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 100 SdHoareTripleChecker+Valid, 361 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-03 02:04:10,488 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [100 Valid, 361 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-03 02:04:10,492 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4169 states. [2022-11-03 02:04:10,696 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4169 to 4104. [2022-11-03 02:04:10,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4104 states, 4103 states have (on average 1.327565196197904) internal successors, (5447), 4103 states have internal predecessors, (5447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:04:10,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4104 states to 4104 states and 5447 transitions. [2022-11-03 02:04:10,727 INFO L78 Accepts]: Start accepts. Automaton has 4104 states and 5447 transitions. Word has length 326 [2022-11-03 02:04:10,727 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:04:10,728 INFO L495 AbstractCegarLoop]: Abstraction has 4104 states and 5447 transitions. [2022-11-03 02:04:10,728 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 37.0) internal successors, (111), 3 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:04:10,729 INFO L276 IsEmpty]: Start isEmpty. Operand 4104 states and 5447 transitions. [2022-11-03 02:04:10,739 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 328 [2022-11-03 02:04:10,739 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:04:10,740 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 12, 12, 12, 12, 12, 12, 11, 11, 11, 11, 11, 10, 9, 8, 8, 7, 7, 6, 6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:04:10,740 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-11-03 02:04:10,740 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:04:10,740 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:04:10,741 INFO L85 PathProgramCache]: Analyzing trace with hash 153411402, now seen corresponding path program 1 times [2022-11-03 02:04:10,741 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:04:10,741 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [821338185] [2022-11-03 02:04:10,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:04:10,741 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:04:10,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:04:10,902 INFO L134 CoverageAnalysis]: Checked inductivity of 1240 backedges. 828 proven. 25 refuted. 0 times theorem prover too weak. 387 trivial. 0 not checked. [2022-11-03 02:04:10,903 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:04:10,903 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [821338185] [2022-11-03 02:04:10,903 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [821338185] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 02:04:10,903 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [569087727] [2022-11-03 02:04:10,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:04:10,904 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:04:10,904 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ee2a8cb-6409-450d-aa92-d2d352c0a6d2/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:04:10,905 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ee2a8cb-6409-450d-aa92-d2d352c0a6d2/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 02:04:10,932 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ee2a8cb-6409-450d-aa92-d2d352c0a6d2/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-03 02:04:11,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:04:11,047 INFO L263 TraceCheckSpWp]: Trace formula consists of 542 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-03 02:04:11,052 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:04:11,466 INFO L134 CoverageAnalysis]: Checked inductivity of 1240 backedges. 524 proven. 253 refuted. 0 times theorem prover too weak. 463 trivial. 0 not checked. [2022-11-03 02:04:11,466 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 02:04:11,793 INFO L134 CoverageAnalysis]: Checked inductivity of 1240 backedges. 642 proven. 135 refuted. 0 times theorem prover too weak. 463 trivial. 0 not checked. [2022-11-03 02:04:11,793 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [569087727] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 02:04:11,793 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [446421187] [2022-11-03 02:04:11,796 INFO L159 IcfgInterpreter]: Started Sifa with 66 locations of interest [2022-11-03 02:04:11,797 INFO L166 IcfgInterpreter]: Building call graph [2022-11-03 02:04:11,797 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-03 02:04:11,797 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-03 02:04:11,797 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-03 02:04:24,194 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-03 02:05:07,065 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '98309#(and (<= 0 (+ |ULTIMATE.start_ssl3_accept_~s__s3__tmp__reuse_message~0#1| 2147483648)) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~tmp___9~0#1| 2147483648)) (<= |ULTIMATE.start_ssl3_accept_~s__s3__tmp__new_cipher~0#1| 2147483647) (= |ULTIMATE.start_ssl3_accept_~skip~0#1| 0) (<= |ULTIMATE.start_ssl3_accept_~ag_X~0#1| 2147483647) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~ret~0#1| 2147483648)) (<= |ULTIMATE.start_ssl3_accept_~initial_state#1| 8464) (<= |ULTIMATE.start_ssl3_accept_~s__ctx__stats__sess_accept~0#1| 2147483647) (<= |ULTIMATE.start_ssl3_accept_~s__s3__tmp__new_cipher__algo_strength~0#1| 2147483647) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~tmp___10~0#1| 2147483648)) (<= |ULTIMATE.start_ssl3_accept_~s__s3__tmp__next_state___0~0#1| 2147483647) (<= |ULTIMATE.start_ssl3_accept_~tmp~0#1| 2147483647) (<= |ULTIMATE.start_ssl3_accept_~s__info_callback~0#1| 2147483647) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~s__cert~0#1| 2147483648)) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~tmp~0#1| 2147483648)) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~tmp___5~0#1| 2147483648)) (<= |ULTIMATE.start_ssl3_accept_~s__session__peer~0#1| 2147483647) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~s__ctx__info_callback~0#1| 2147483648)) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~cb~0#1| 2147483648)) (<= |ULTIMATE.start_ssl3_accept_~s__s3__tmp__reuse_message~0#1| 2147483647) (<= |ULTIMATE.start_ssl3_accept_#in~initial_state#1| 8464) (<= |ULTIMATE.start_ssl3_accept_~tmp___10~0#1| 2147483647) (<= 0 (+ 2147483648 |ULTIMATE.start_ssl3_accept_~s__hit~0#1|)) (<= |ULTIMATE.start_ssl3_accept_~tmp___4~0#1| 2147483647) (<= |ULTIMATE.start_ssl3_accept_~tmp___3~0#1| 2147483647) (<= |ULTIMATE.start_ssl3_accept_~s__s3__tmp__new_cipher__algorithms~0#1| 2147483647) (<= |ULTIMATE.start_ssl3_accept_~s__hit~0#1| 2147483647) (<= |ULTIMATE.start_ssl3_accept_~s__cert~0#1| 2147483647) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~s__s3__tmp__new_cipher~0#1| 2147483648)) (<= |#NULL.offset| 0) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~s__info_callback~0#1| 2147483648)) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~tmp___4~0#1| 2147483648)) (<= |ULTIMATE.start_ssl3_accept_~tmp___9~0#1| 2147483647) (<= 0 |ULTIMATE.start_ssl3_accept_~got_new_session~0#1|) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~s__debug~0#1| 2147483648)) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~s__cert__pkeys__AT0__privatekey~0#1| 2147483648)) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~tmp___3~0#1| 2147483648)) (= |ULTIMATE.start_ssl3_accept_~blastFlag~0#1| 4) (= 8464 |ULTIMATE.start_main_~s~0#1|) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~s__session__peer~0#1| 2147483648)) (<= 0 (+ 2147483648 |ULTIMATE.start_ssl3_accept_~s__s3__tmp__new_cipher__algo_strength~0#1|)) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~s__init_buf___0~0#1| 2147483648)) (<= 8464 |ULTIMATE.start_ssl3_accept_~initial_state#1|) (<= |ULTIMATE.start_ssl3_accept_~s__options~0#1| 2147483647) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~Time~0#1| 2147483648)) (<= |ULTIMATE.start_ssl3_accept_~Time~0#1| 2147483647) (<= |ULTIMATE.start_ssl3_accept_~s__debug~0#1| 2147483647) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~s__options~0#1| 2147483648)) (<= |ULTIMATE.start_ssl3_accept_~tmp___8~0#1| 2147483647) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~s__ctx__stats__sess_accept_renegotiate~0#1| 2147483648)) (= |ULTIMATE.start_ssl3_accept_~s__state~0#1| 8672) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~ag_X~0#1| 2147483648)) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~num1~0#1| 2147483648)) (<= |ULTIMATE.start_ssl3_accept_~tmp___5~0#1| 2147483647) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~tmp___8~0#1| 2147483648)) (<= |ULTIMATE.start_ssl3_accept_~s__init_buf___0~0#1| 2147483647) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~s__ctx__stats__sess_accept~0#1| 2147483648)) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~s__s3__tmp__new_cipher__algorithms~0#1| 2147483648)) (<= |ULTIMATE.start_ssl3_accept_~s__cert__pkeys__AT0__privatekey~0#1| 2147483647) (<= 0 |#NULL.offset|) (<= |ULTIMATE.start_ssl3_accept_~num1~0#1| 2147483647) (<= |ULTIMATE.start_ssl3_accept_~s__ctx__stats__sess_accept_renegotiate~0#1| 2147483647) (<= 8464 |ULTIMATE.start_ssl3_accept_#in~initial_state#1|) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~s__s3__tmp__next_state___0~0#1| 2147483648)) (<= 0 |#StackHeapBarrier|) (<= |ULTIMATE.start_ssl3_accept_~ag_Y~0#1| 2147483647) (<= |ULTIMATE.start_ssl3_accept_~ret~0#1| 2147483647) (<= 0 (+ 2147483648 |ULTIMATE.start_ssl3_accept_~ag_Y~0#1|)) (<= |ULTIMATE.start_ssl3_accept_~cb~0#1| 2147483647) (= |#NULL.base| 0) (<= |ULTIMATE.start_ssl3_accept_~s__ctx__info_callback~0#1| 2147483647))' at error location [2022-11-03 02:05:07,066 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-03 02:05:07,066 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-03 02:05:07,066 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 5, 5] total 8 [2022-11-03 02:05:07,066 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [441846778] [2022-11-03 02:05:07,066 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-03 02:05:07,067 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-03 02:05:07,067 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:05:07,067 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-03 02:05:07,069 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=902, Invalid=3790, Unknown=0, NotChecked=0, Total=4692 [2022-11-03 02:05:07,069 INFO L87 Difference]: Start difference. First operand 4104 states and 5447 transitions. Second operand has 8 states, 8 states have (on average 34.375) internal successors, (275), 8 states have internal predecessors, (275), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:05:08,841 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:05:08,841 INFO L93 Difference]: Finished difference Result 12528 states and 16814 transitions. [2022-11-03 02:05:08,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-03 02:05:08,841 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 34.375) internal successors, (275), 8 states have internal predecessors, (275), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 327 [2022-11-03 02:05:08,842 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:05:08,857 INFO L225 Difference]: With dead ends: 12528 [2022-11-03 02:05:08,858 INFO L226 Difference]: Without dead ends: 8100 [2022-11-03 02:05:08,866 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1005 GetRequests, 903 SyntacticMatches, 24 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3347 ImplicationChecksByTransitivity, 43.1s TimeCoverageRelationStatistics Valid=996, Invalid=5324, Unknown=0, NotChecked=0, Total=6320 [2022-11-03 02:05:08,867 INFO L413 NwaCegarLoop]: 304 mSDtfsCounter, 435 mSDsluCounter, 751 mSDsCounter, 0 mSdLazyCounter, 1596 mSolverCounterSat, 105 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 435 SdHoareTripleChecker+Valid, 1006 SdHoareTripleChecker+Invalid, 1701 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 105 IncrementalHoareTripleChecker+Valid, 1596 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-11-03 02:05:08,867 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [435 Valid, 1006 Invalid, 1701 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [105 Valid, 1596 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-11-03 02:05:08,876 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8100 states. [2022-11-03 02:05:09,229 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8100 to 6575. [2022-11-03 02:05:09,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6575 states, 6574 states have (on average 1.329936111956191) internal successors, (8743), 6574 states have internal predecessors, (8743), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:05:09,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6575 states to 6575 states and 8743 transitions. [2022-11-03 02:05:09,250 INFO L78 Accepts]: Start accepts. Automaton has 6575 states and 8743 transitions. Word has length 327 [2022-11-03 02:05:09,251 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:05:09,251 INFO L495 AbstractCegarLoop]: Abstraction has 6575 states and 8743 transitions. [2022-11-03 02:05:09,251 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 34.375) internal successors, (275), 8 states have internal predecessors, (275), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:05:09,251 INFO L276 IsEmpty]: Start isEmpty. Operand 6575 states and 8743 transitions. [2022-11-03 02:05:09,267 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 415 [2022-11-03 02:05:09,268 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:05:09,268 INFO L195 NwaCegarLoop]: trace histogram [17, 17, 17, 17, 17, 17, 17, 17, 17, 16, 16, 14, 14, 14, 13, 12, 10, 10, 8, 8, 6, 6, 6, 6, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:05:09,308 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ee2a8cb-6409-450d-aa92-d2d352c0a6d2/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-03 02:05:09,494 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ee2a8cb-6409-450d-aa92-d2d352c0a6d2/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2022-11-03 02:05:09,495 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:05:09,495 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:05:09,495 INFO L85 PathProgramCache]: Analyzing trace with hash -665878114, now seen corresponding path program 2 times [2022-11-03 02:05:09,495 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:05:09,496 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [805668806] [2022-11-03 02:05:09,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:05:09,496 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:05:09,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:05:09,688 INFO L134 CoverageAnalysis]: Checked inductivity of 2281 backedges. 1272 proven. 12 refuted. 0 times theorem prover too weak. 997 trivial. 0 not checked. [2022-11-03 02:05:09,688 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:05:09,689 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [805668806] [2022-11-03 02:05:09,689 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [805668806] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 02:05:09,689 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1850544808] [2022-11-03 02:05:09,689 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-03 02:05:09,690 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:05:09,690 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ee2a8cb-6409-450d-aa92-d2d352c0a6d2/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:05:09,691 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ee2a8cb-6409-450d-aa92-d2d352c0a6d2/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 02:05:09,715 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ee2a8cb-6409-450d-aa92-d2d352c0a6d2/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-03 02:05:09,799 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-11-03 02:05:09,799 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-03 02:05:09,801 INFO L263 TraceCheckSpWp]: Trace formula consists of 242 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-03 02:05:09,806 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:05:09,865 INFO L134 CoverageAnalysis]: Checked inductivity of 2281 backedges. 767 proven. 12 refuted. 0 times theorem prover too weak. 1502 trivial. 0 not checked. [2022-11-03 02:05:09,865 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 02:05:09,937 INFO L134 CoverageAnalysis]: Checked inductivity of 2281 backedges. 767 proven. 12 refuted. 0 times theorem prover too weak. 1502 trivial. 0 not checked. [2022-11-03 02:05:09,937 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1850544808] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 02:05:09,937 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1025944978] [2022-11-03 02:05:09,940 INFO L159 IcfgInterpreter]: Started Sifa with 66 locations of interest [2022-11-03 02:05:09,940 INFO L166 IcfgInterpreter]: Building call graph [2022-11-03 02:05:09,941 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-03 02:05:09,941 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-03 02:05:09,941 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-03 02:05:23,378 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-03 02:06:06,269 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '122948#(and (<= 0 (+ |ULTIMATE.start_ssl3_accept_~s__s3__tmp__reuse_message~0#1| 2147483648)) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~tmp___9~0#1| 2147483648)) (<= |ULTIMATE.start_ssl3_accept_~s__s3__tmp__new_cipher~0#1| 2147483647) (= |ULTIMATE.start_ssl3_accept_~skip~0#1| 0) (<= |ULTIMATE.start_ssl3_accept_~ag_X~0#1| 2147483647) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~ret~0#1| 2147483648)) (<= |ULTIMATE.start_ssl3_accept_~initial_state#1| 8464) (<= |ULTIMATE.start_ssl3_accept_~s__ctx__stats__sess_accept~0#1| 2147483647) (<= |ULTIMATE.start_ssl3_accept_~s__s3__tmp__new_cipher__algo_strength~0#1| 2147483647) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~tmp___10~0#1| 2147483648)) (<= |ULTIMATE.start_ssl3_accept_~s__s3__tmp__next_state___0~0#1| 2147483647) (<= |ULTIMATE.start_ssl3_accept_~tmp~0#1| 2147483647) (<= |ULTIMATE.start_ssl3_accept_~s__info_callback~0#1| 2147483647) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~s__cert~0#1| 2147483648)) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~tmp~0#1| 2147483648)) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~tmp___5~0#1| 2147483648)) (<= |ULTIMATE.start_ssl3_accept_~s__session__peer~0#1| 2147483647) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~s__ctx__info_callback~0#1| 2147483648)) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~cb~0#1| 2147483648)) (<= |ULTIMATE.start_ssl3_accept_~s__s3__tmp__reuse_message~0#1| 2147483647) (<= |ULTIMATE.start_ssl3_accept_#in~initial_state#1| 8464) (<= |ULTIMATE.start_ssl3_accept_~tmp___10~0#1| 2147483647) (<= 0 (+ 2147483648 |ULTIMATE.start_ssl3_accept_~s__hit~0#1|)) (<= |ULTIMATE.start_ssl3_accept_~tmp___4~0#1| 2147483647) (<= |ULTIMATE.start_ssl3_accept_~tmp___3~0#1| 2147483647) (<= |ULTIMATE.start_ssl3_accept_~s__s3__tmp__new_cipher__algorithms~0#1| 2147483647) (<= |ULTIMATE.start_ssl3_accept_~s__hit~0#1| 2147483647) (<= |ULTIMATE.start_ssl3_accept_~s__cert~0#1| 2147483647) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~s__s3__tmp__new_cipher~0#1| 2147483648)) (<= |#NULL.offset| 0) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~s__info_callback~0#1| 2147483648)) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~tmp___4~0#1| 2147483648)) (<= |ULTIMATE.start_ssl3_accept_~tmp___9~0#1| 2147483647) (<= 0 |ULTIMATE.start_ssl3_accept_~got_new_session~0#1|) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~s__debug~0#1| 2147483648)) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~s__cert__pkeys__AT0__privatekey~0#1| 2147483648)) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~tmp___3~0#1| 2147483648)) (= |ULTIMATE.start_ssl3_accept_~blastFlag~0#1| 4) (= 8464 |ULTIMATE.start_main_~s~0#1|) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~s__session__peer~0#1| 2147483648)) (<= 0 (+ 2147483648 |ULTIMATE.start_ssl3_accept_~s__s3__tmp__new_cipher__algo_strength~0#1|)) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~s__init_buf___0~0#1| 2147483648)) (<= 8464 |ULTIMATE.start_ssl3_accept_~initial_state#1|) (<= |ULTIMATE.start_ssl3_accept_~s__options~0#1| 2147483647) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~Time~0#1| 2147483648)) (<= |ULTIMATE.start_ssl3_accept_~Time~0#1| 2147483647) (<= |ULTIMATE.start_ssl3_accept_~s__debug~0#1| 2147483647) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~s__options~0#1| 2147483648)) (<= |ULTIMATE.start_ssl3_accept_~tmp___8~0#1| 2147483647) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~s__ctx__stats__sess_accept_renegotiate~0#1| 2147483648)) (= |ULTIMATE.start_ssl3_accept_~s__state~0#1| 8672) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~ag_X~0#1| 2147483648)) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~num1~0#1| 2147483648)) (<= |ULTIMATE.start_ssl3_accept_~tmp___5~0#1| 2147483647) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~tmp___8~0#1| 2147483648)) (<= |ULTIMATE.start_ssl3_accept_~s__init_buf___0~0#1| 2147483647) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~s__ctx__stats__sess_accept~0#1| 2147483648)) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~s__s3__tmp__new_cipher__algorithms~0#1| 2147483648)) (<= |ULTIMATE.start_ssl3_accept_~s__cert__pkeys__AT0__privatekey~0#1| 2147483647) (<= 0 |#NULL.offset|) (<= |ULTIMATE.start_ssl3_accept_~num1~0#1| 2147483647) (<= |ULTIMATE.start_ssl3_accept_~s__ctx__stats__sess_accept_renegotiate~0#1| 2147483647) (<= 8464 |ULTIMATE.start_ssl3_accept_#in~initial_state#1|) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~s__s3__tmp__next_state___0~0#1| 2147483648)) (<= 0 |#StackHeapBarrier|) (<= |ULTIMATE.start_ssl3_accept_~ag_Y~0#1| 2147483647) (<= |ULTIMATE.start_ssl3_accept_~ret~0#1| 2147483647) (<= 0 (+ 2147483648 |ULTIMATE.start_ssl3_accept_~ag_Y~0#1|)) (<= |ULTIMATE.start_ssl3_accept_~cb~0#1| 2147483647) (= |#NULL.base| 0) (<= |ULTIMATE.start_ssl3_accept_~s__ctx__info_callback~0#1| 2147483647))' at error location [2022-11-03 02:06:06,269 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-03 02:06:06,269 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-03 02:06:06,269 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 6 [2022-11-03 02:06:06,270 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [339600713] [2022-11-03 02:06:06,270 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-03 02:06:06,271 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-03 02:06:06,271 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:06:06,271 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-03 02:06:06,272 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=887, Invalid=3535, Unknown=0, NotChecked=0, Total=4422 [2022-11-03 02:06:06,273 INFO L87 Difference]: Start difference. First operand 6575 states and 8743 transitions. Second operand has 6 states, 6 states have (on average 37.166666666666664) internal successors, (223), 6 states have internal predecessors, (223), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:06:07,592 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:06:07,593 INFO L93 Difference]: Finished difference Result 22868 states and 30399 transitions. [2022-11-03 02:06:07,593 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-03 02:06:07,593 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 37.166666666666664) internal successors, (223), 6 states have internal predecessors, (223), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 414 [2022-11-03 02:06:07,594 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:06:07,625 INFO L225 Difference]: With dead ends: 22868 [2022-11-03 02:06:07,626 INFO L226 Difference]: Without dead ends: 16295 [2022-11-03 02:06:07,637 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1252 GetRequests, 1149 SyntacticMatches, 34 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3434 ImplicationChecksByTransitivity, 42.9s TimeCoverageRelationStatistics Valid=912, Invalid=4058, Unknown=0, NotChecked=0, Total=4970 [2022-11-03 02:06:07,638 INFO L413 NwaCegarLoop]: 343 mSDtfsCounter, 377 mSDsluCounter, 557 mSDsCounter, 0 mSdLazyCounter, 810 mSolverCounterSat, 71 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 377 SdHoareTripleChecker+Valid, 857 SdHoareTripleChecker+Invalid, 881 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 71 IncrementalHoareTripleChecker+Valid, 810 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-03 02:06:07,639 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [377 Valid, 857 Invalid, 881 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [71 Valid, 810 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-03 02:06:07,656 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16295 states. [2022-11-03 02:06:08,147 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16295 to 11674. [2022-11-03 02:06:08,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11674 states, 11673 states have (on average 1.3197978240383792) internal successors, (15406), 11673 states have internal predecessors, (15406), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:06:08,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11674 states to 11674 states and 15406 transitions. [2022-11-03 02:06:08,181 INFO L78 Accepts]: Start accepts. Automaton has 11674 states and 15406 transitions. Word has length 414 [2022-11-03 02:06:08,181 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:06:08,181 INFO L495 AbstractCegarLoop]: Abstraction has 11674 states and 15406 transitions. [2022-11-03 02:06:08,181 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 37.166666666666664) internal successors, (223), 6 states have internal predecessors, (223), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:06:08,182 INFO L276 IsEmpty]: Start isEmpty. Operand 11674 states and 15406 transitions. [2022-11-03 02:06:08,202 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 461 [2022-11-03 02:06:08,202 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:06:08,203 INFO L195 NwaCegarLoop]: trace histogram [18, 18, 18, 18, 18, 18, 18, 18, 18, 17, 17, 17, 16, 16, 15, 14, 12, 12, 10, 10, 8, 8, 8, 8, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:06:08,243 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ee2a8cb-6409-450d-aa92-d2d352c0a6d2/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-11-03 02:06:08,418 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ee2a8cb-6409-450d-aa92-d2d352c0a6d2/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2022-11-03 02:06:08,419 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:06:08,419 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:06:08,419 INFO L85 PathProgramCache]: Analyzing trace with hash -314056963, now seen corresponding path program 1 times [2022-11-03 02:06:08,419 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:06:08,419 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [915743157] [2022-11-03 02:06:08,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:06:08,420 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:06:08,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:06:08,565 INFO L134 CoverageAnalysis]: Checked inductivity of 2772 backedges. 1583 proven. 0 refuted. 0 times theorem prover too weak. 1189 trivial. 0 not checked. [2022-11-03 02:06:08,566 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:06:08,566 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [915743157] [2022-11-03 02:06:08,566 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [915743157] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:06:08,566 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:06:08,566 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 02:06:08,567 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [836555194] [2022-11-03 02:06:08,567 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:06:08,567 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:06:08,567 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:06:08,568 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:06:08,568 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:06:08,568 INFO L87 Difference]: Start difference. First operand 11674 states and 15406 transitions. Second operand has 3 states, 3 states have (on average 53.333333333333336) internal successors, (160), 3 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:06:09,203 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:06:09,203 INFO L93 Difference]: Finished difference Result 24751 states and 32453 transitions. [2022-11-03 02:06:09,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:06:09,204 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 53.333333333333336) internal successors, (160), 3 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 460 [2022-11-03 02:06:09,205 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:06:09,232 INFO L225 Difference]: With dead ends: 24751 [2022-11-03 02:06:09,232 INFO L226 Difference]: Without dead ends: 13102 [2022-11-03 02:06:09,245 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:06:09,246 INFO L413 NwaCegarLoop]: 134 mSDtfsCounter, 7 mSDsluCounter, 55 mSDsCounter, 0 mSdLazyCounter, 123 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 184 SdHoareTripleChecker+Invalid, 127 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 123 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 02:06:09,246 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 184 Invalid, 127 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 123 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 02:06:09,261 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13102 states. [2022-11-03 02:06:09,741 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13102 to 13018. [2022-11-03 02:06:09,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13018 states, 13017 states have (on average 1.2964584773757395) internal successors, (16876), 13017 states have internal predecessors, (16876), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:06:09,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13018 states to 13018 states and 16876 transitions. [2022-11-03 02:06:09,774 INFO L78 Accepts]: Start accepts. Automaton has 13018 states and 16876 transitions. Word has length 460 [2022-11-03 02:06:09,774 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:06:09,774 INFO L495 AbstractCegarLoop]: Abstraction has 13018 states and 16876 transitions. [2022-11-03 02:06:09,775 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 53.333333333333336) internal successors, (160), 3 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:06:09,775 INFO L276 IsEmpty]: Start isEmpty. Operand 13018 states and 16876 transitions. [2022-11-03 02:06:09,806 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 475 [2022-11-03 02:06:09,806 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:06:09,806 INFO L195 NwaCegarLoop]: trace histogram [19, 19, 19, 19, 19, 19, 19, 19, 19, 18, 18, 18, 16, 16, 15, 14, 12, 12, 10, 10, 8, 8, 8, 8, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:06:09,807 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-11-03 02:06:09,807 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:06:09,807 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:06:09,807 INFO L85 PathProgramCache]: Analyzing trace with hash 844542462, now seen corresponding path program 1 times [2022-11-03 02:06:09,810 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:06:09,810 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [952053078] [2022-11-03 02:06:09,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:06:09,811 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:06:09,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:06:09,975 INFO L134 CoverageAnalysis]: Checked inductivity of 3007 backedges. 1598 proven. 0 refuted. 0 times theorem prover too weak. 1409 trivial. 0 not checked. [2022-11-03 02:06:09,975 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:06:09,975 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [952053078] [2022-11-03 02:06:09,976 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [952053078] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:06:09,976 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:06:09,976 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 02:06:09,976 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [993784401] [2022-11-03 02:06:09,976 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:06:09,977 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:06:09,977 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:06:09,977 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:06:09,978 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:06:09,978 INFO L87 Difference]: Start difference. First operand 13018 states and 16876 transitions. Second operand has 3 states, 3 states have (on average 48.0) internal successors, (144), 3 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:06:10,429 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:06:10,429 INFO L93 Difference]: Finished difference Result 25742 states and 33220 transitions. [2022-11-03 02:06:10,430 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:06:10,430 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 48.0) internal successors, (144), 3 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 474 [2022-11-03 02:06:10,430 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:06:10,456 INFO L225 Difference]: With dead ends: 25742 [2022-11-03 02:06:10,457 INFO L226 Difference]: Without dead ends: 12749 [2022-11-03 02:06:10,470 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 [2022-11-03 02:06:10,471 INFO L413 NwaCegarLoop]: 135 mSDtfsCounter, 8 mSDsluCounter, 55 mSDsCounter, 0 mSdLazyCounter, 111 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 185 SdHoareTripleChecker+Invalid, 116 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 111 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 02:06:10,471 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 185 Invalid, 116 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 111 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 02:06:10,483 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12749 states. [2022-11-03 02:06:11,123 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12749 to 12457. [2022-11-03 02:06:11,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12457 states, 12456 states have (on average 1.275208734746307) internal successors, (15884), 12456 states have internal predecessors, (15884), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:06:11,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12457 states to 12457 states and 15884 transitions. [2022-11-03 02:06:11,166 INFO L78 Accepts]: Start accepts. Automaton has 12457 states and 15884 transitions. Word has length 474 [2022-11-03 02:06:11,166 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:06:11,167 INFO L495 AbstractCegarLoop]: Abstraction has 12457 states and 15884 transitions. [2022-11-03 02:06:11,167 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 48.0) internal successors, (144), 3 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:06:11,167 INFO L276 IsEmpty]: Start isEmpty. Operand 12457 states and 15884 transitions. [2022-11-03 02:06:11,199 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 477 [2022-11-03 02:06:11,199 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:06:11,200 INFO L195 NwaCegarLoop]: trace histogram [19, 19, 19, 19, 19, 19, 19, 19, 19, 18, 18, 18, 18, 16, 15, 14, 12, 12, 10, 10, 8, 8, 8, 8, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:06:11,200 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-11-03 02:06:11,200 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:06:11,200 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:06:11,201 INFO L85 PathProgramCache]: Analyzing trace with hash 1456835016, now seen corresponding path program 1 times [2022-11-03 02:06:11,201 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:06:11,201 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1161537089] [2022-11-03 02:06:11,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:06:11,201 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:06:11,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:06:11,624 INFO L134 CoverageAnalysis]: Checked inductivity of 3040 backedges. 1644 proven. 193 refuted. 0 times theorem prover too weak. 1203 trivial. 0 not checked. [2022-11-03 02:06:11,624 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:06:11,625 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1161537089] [2022-11-03 02:06:11,625 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1161537089] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 02:06:11,625 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [686258140] [2022-11-03 02:06:11,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:06:11,625 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:06:11,625 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ee2a8cb-6409-450d-aa92-d2d352c0a6d2/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:06:11,626 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ee2a8cb-6409-450d-aa92-d2d352c0a6d2/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 02:06:11,647 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ee2a8cb-6409-450d-aa92-d2d352c0a6d2/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-03 02:06:11,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:06:11,801 INFO L263 TraceCheckSpWp]: Trace formula consists of 764 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-03 02:06:11,807 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:06:13,156 INFO L134 CoverageAnalysis]: Checked inductivity of 3040 backedges. 1693 proven. 226 refuted. 0 times theorem prover too weak. 1121 trivial. 0 not checked. [2022-11-03 02:06:13,156 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 02:06:14,192 INFO L134 CoverageAnalysis]: Checked inductivity of 3040 backedges. 1782 proven. 137 refuted. 0 times theorem prover too weak. 1121 trivial. 0 not checked. [2022-11-03 02:06:14,193 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [686258140] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 02:06:14,193 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1028814877] [2022-11-03 02:06:14,195 INFO L159 IcfgInterpreter]: Started Sifa with 69 locations of interest [2022-11-03 02:06:14,196 INFO L166 IcfgInterpreter]: Building call graph [2022-11-03 02:06:14,196 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-03 02:06:14,196 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-03 02:06:14,196 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-03 02:06:52,214 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-03 02:07:38,921 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '253027#(and (<= 0 (+ |ULTIMATE.start_ssl3_accept_~s__s3__tmp__reuse_message~0#1| 2147483648)) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~tmp___9~0#1| 2147483648)) (<= |ULTIMATE.start_ssl3_accept_~s__s3__tmp__new_cipher~0#1| 2147483647) (= |ULTIMATE.start_ssl3_accept_~skip~0#1| 0) (<= |ULTIMATE.start_ssl3_accept_~ag_X~0#1| 2147483647) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~ret~0#1| 2147483648)) (<= |ULTIMATE.start_ssl3_accept_~initial_state#1| 8464) (<= |ULTIMATE.start_ssl3_accept_~s__ctx__stats__sess_accept~0#1| 2147483647) (<= |ULTIMATE.start_ssl3_accept_~s__s3__tmp__new_cipher__algo_strength~0#1| 2147483647) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~tmp___10~0#1| 2147483648)) (<= |ULTIMATE.start_ssl3_accept_~s__s3__tmp__next_state___0~0#1| 2147483647) (<= |ULTIMATE.start_ssl3_accept_~tmp~0#1| 2147483647) (<= |ULTIMATE.start_ssl3_accept_~s__info_callback~0#1| 2147483647) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~s__cert~0#1| 2147483648)) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~tmp~0#1| 2147483648)) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~tmp___5~0#1| 2147483648)) (<= |ULTIMATE.start_ssl3_accept_~s__session__peer~0#1| 2147483647) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~s__ctx__info_callback~0#1| 2147483648)) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~cb~0#1| 2147483648)) (<= |ULTIMATE.start_ssl3_accept_~s__s3__tmp__reuse_message~0#1| 2147483647) (<= |ULTIMATE.start_ssl3_accept_#in~initial_state#1| 8464) (<= |ULTIMATE.start_ssl3_accept_~tmp___10~0#1| 2147483647) (<= 0 (+ 2147483648 |ULTIMATE.start_ssl3_accept_~s__hit~0#1|)) (<= |ULTIMATE.start_ssl3_accept_~tmp___4~0#1| 2147483647) (<= |ULTIMATE.start_ssl3_accept_~tmp___3~0#1| 2147483647) (<= |ULTIMATE.start_ssl3_accept_~s__s3__tmp__new_cipher__algorithms~0#1| 2147483647) (<= |ULTIMATE.start_ssl3_accept_~s__hit~0#1| 2147483647) (<= |ULTIMATE.start_ssl3_accept_~s__cert~0#1| 2147483647) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~s__s3__tmp__new_cipher~0#1| 2147483648)) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~s__info_callback~0#1| 2147483648)) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~tmp___4~0#1| 2147483648)) (<= |ULTIMATE.start_ssl3_accept_~tmp___9~0#1| 2147483647) (<= 0 |ULTIMATE.start_ssl3_accept_~got_new_session~0#1|) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~s__debug~0#1| 2147483648)) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~s__cert__pkeys__AT0__privatekey~0#1| 2147483648)) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~tmp___3~0#1| 2147483648)) (= |ULTIMATE.start_ssl3_accept_~blastFlag~0#1| 4) (= 8464 |ULTIMATE.start_main_~s~0#1|) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~s__session__peer~0#1| 2147483648)) (<= 0 (+ 2147483648 |ULTIMATE.start_ssl3_accept_~s__s3__tmp__new_cipher__algo_strength~0#1|)) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~s__init_buf___0~0#1| 2147483648)) (<= 8464 |ULTIMATE.start_ssl3_accept_~initial_state#1|) (<= |ULTIMATE.start_ssl3_accept_~s__options~0#1| 2147483647) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~Time~0#1| 2147483648)) (<= |ULTIMATE.start_ssl3_accept_~Time~0#1| 2147483647) (<= |ULTIMATE.start_ssl3_accept_~s__debug~0#1| 2147483647) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~s__options~0#1| 2147483648)) (<= |ULTIMATE.start_ssl3_accept_~tmp___8~0#1| 2147483647) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~s__ctx__stats__sess_accept_renegotiate~0#1| 2147483648)) (= |ULTIMATE.start_ssl3_accept_~s__state~0#1| 8672) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~ag_X~0#1| 2147483648)) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~num1~0#1| 2147483648)) (<= |ULTIMATE.start_ssl3_accept_~tmp___5~0#1| 2147483647) (= |#NULL.offset| 0) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~tmp___8~0#1| 2147483648)) (<= |ULTIMATE.start_ssl3_accept_~s__init_buf___0~0#1| 2147483647) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~s__ctx__stats__sess_accept~0#1| 2147483648)) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~s__s3__tmp__new_cipher__algorithms~0#1| 2147483648)) (<= |ULTIMATE.start_ssl3_accept_~s__cert__pkeys__AT0__privatekey~0#1| 2147483647) (<= |ULTIMATE.start_ssl3_accept_~num1~0#1| 2147483647) (<= |ULTIMATE.start_ssl3_accept_~s__ctx__stats__sess_accept_renegotiate~0#1| 2147483647) (<= 8464 |ULTIMATE.start_ssl3_accept_#in~initial_state#1|) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~s__s3__tmp__next_state___0~0#1| 2147483648)) (<= 0 |#StackHeapBarrier|) (<= |ULTIMATE.start_ssl3_accept_~ag_Y~0#1| 2147483647) (<= |ULTIMATE.start_ssl3_accept_~ret~0#1| 2147483647) (<= 0 (+ 2147483648 |ULTIMATE.start_ssl3_accept_~ag_Y~0#1|)) (<= |ULTIMATE.start_ssl3_accept_~cb~0#1| 2147483647) (= |#NULL.base| 0) (<= |ULTIMATE.start_ssl3_accept_~s__ctx__info_callback~0#1| 2147483647))' at error location [2022-11-03 02:07:38,921 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-03 02:07:38,922 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-03 02:07:38,922 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2022-11-03 02:07:38,922 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [639593039] [2022-11-03 02:07:38,922 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-03 02:07:38,923 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-03 02:07:38,923 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:07:38,924 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-03 02:07:38,925 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1217, Invalid=4185, Unknown=0, NotChecked=0, Total=5402 [2022-11-03 02:07:38,925 INFO L87 Difference]: Start difference. First operand 12457 states and 15884 transitions. Second operand has 11 states, 11 states have (on average 34.36363636363637) internal successors, (378), 11 states have internal predecessors, (378), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:07:42,578 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:07:42,578 INFO L93 Difference]: Finished difference Result 45279 states and 58337 transitions. [2022-11-03 02:07:42,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-11-03 02:07:42,579 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 34.36363636363637) internal successors, (378), 11 states have internal predecessors, (378), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 476 [2022-11-03 02:07:42,579 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:07:42,637 INFO L225 Difference]: With dead ends: 45279 [2022-11-03 02:07:42,637 INFO L226 Difference]: Without dead ends: 35839 [2022-11-03 02:07:42,652 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1448 GetRequests, 1307 SyntacticMatches, 61 SemanticMatches, 80 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7016 ImplicationChecksByTransitivity, 47.1s TimeCoverageRelationStatistics Valid=1295, Invalid=5347, Unknown=0, NotChecked=0, Total=6642 [2022-11-03 02:07:42,653 INFO L413 NwaCegarLoop]: 354 mSDtfsCounter, 842 mSDsluCounter, 1207 mSDsCounter, 0 mSdLazyCounter, 1155 mSolverCounterSat, 134 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 842 SdHoareTripleChecker+Valid, 1478 SdHoareTripleChecker+Invalid, 1580 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 134 IncrementalHoareTripleChecker+Valid, 1155 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 291 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-11-03 02:07:42,654 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [842 Valid, 1478 Invalid, 1580 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [134 Valid, 1155 Invalid, 0 Unknown, 291 Unchecked, 1.3s Time] [2022-11-03 02:07:42,685 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35839 states. [2022-11-03 02:07:44,478 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35839 to 33643. [2022-11-03 02:07:44,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33643 states, 33642 states have (on average 1.2448130313298853) internal successors, (41878), 33642 states have internal predecessors, (41878), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:07:44,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33643 states to 33643 states and 41878 transitions. [2022-11-03 02:07:44,562 INFO L78 Accepts]: Start accepts. Automaton has 33643 states and 41878 transitions. Word has length 476 [2022-11-03 02:07:44,563 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:07:44,563 INFO L495 AbstractCegarLoop]: Abstraction has 33643 states and 41878 transitions. [2022-11-03 02:07:44,563 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 34.36363636363637) internal successors, (378), 11 states have internal predecessors, (378), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:07:44,563 INFO L276 IsEmpty]: Start isEmpty. Operand 33643 states and 41878 transitions. [2022-11-03 02:07:44,612 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 544 [2022-11-03 02:07:44,613 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:07:44,613 INFO L195 NwaCegarLoop]: trace histogram [21, 21, 21, 21, 21, 21, 21, 21, 21, 20, 20, 20, 20, 18, 18, 16, 14, 14, 12, 12, 10, 10, 10, 10, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:07:44,654 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ee2a8cb-6409-450d-aa92-d2d352c0a6d2/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-11-03 02:07:44,826 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ee2a8cb-6409-450d-aa92-d2d352c0a6d2/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:07:44,827 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:07:44,827 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:07:44,827 INFO L85 PathProgramCache]: Analyzing trace with hash 482045398, now seen corresponding path program 1 times [2022-11-03 02:07:44,827 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:07:44,828 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [620068315] [2022-11-03 02:07:44,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:07:44,828 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:07:44,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:07:45,351 INFO L134 CoverageAnalysis]: Checked inductivity of 3892 backedges. 2178 proven. 360 refuted. 0 times theorem prover too weak. 1354 trivial. 0 not checked. [2022-11-03 02:07:45,351 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:07:45,352 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [620068315] [2022-11-03 02:07:45,352 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [620068315] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 02:07:45,352 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1987475095] [2022-11-03 02:07:45,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:07:45,352 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:07:45,353 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ee2a8cb-6409-450d-aa92-d2d352c0a6d2/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:07:45,354 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ee2a8cb-6409-450d-aa92-d2d352c0a6d2/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 02:07:45,378 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ee2a8cb-6409-450d-aa92-d2d352c0a6d2/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-11-03 02:07:45,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:07:45,539 INFO L263 TraceCheckSpWp]: Trace formula consists of 846 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-03 02:07:45,545 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:07:47,158 INFO L134 CoverageAnalysis]: Checked inductivity of 3892 backedges. 2178 proven. 360 refuted. 0 times theorem prover too weak. 1354 trivial. 0 not checked. [2022-11-03 02:07:47,159 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 02:07:48,346 INFO L134 CoverageAnalysis]: Checked inductivity of 3892 backedges. 2341 proven. 197 refuted. 0 times theorem prover too weak. 1354 trivial. 0 not checked. [2022-11-03 02:07:48,346 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1987475095] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 02:07:48,346 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [60528000] [2022-11-03 02:07:48,348 INFO L159 IcfgInterpreter]: Started Sifa with 69 locations of interest [2022-11-03 02:07:48,349 INFO L166 IcfgInterpreter]: Building call graph [2022-11-03 02:07:48,349 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-03 02:07:48,349 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-03 02:07:48,349 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-03 02:08:19,975 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-03 02:09:06,160 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '347370#(and (<= 0 (+ |ULTIMATE.start_ssl3_accept_~s__s3__tmp__reuse_message~0#1| 2147483648)) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~tmp___9~0#1| 2147483648)) (<= |ULTIMATE.start_ssl3_accept_~s__s3__tmp__new_cipher~0#1| 2147483647) (= |ULTIMATE.start_ssl3_accept_~skip~0#1| 0) (<= |ULTIMATE.start_ssl3_accept_~ag_X~0#1| 2147483647) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~ret~0#1| 2147483648)) (<= |ULTIMATE.start_ssl3_accept_~initial_state#1| 8464) (<= |ULTIMATE.start_ssl3_accept_~s__ctx__stats__sess_accept~0#1| 2147483647) (<= |ULTIMATE.start_ssl3_accept_~s__s3__tmp__new_cipher__algo_strength~0#1| 2147483647) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~tmp___10~0#1| 2147483648)) (<= |ULTIMATE.start_ssl3_accept_~s__s3__tmp__next_state___0~0#1| 2147483647) (<= |ULTIMATE.start_ssl3_accept_~tmp~0#1| 2147483647) (<= |ULTIMATE.start_ssl3_accept_~s__info_callback~0#1| 2147483647) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~s__cert~0#1| 2147483648)) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~tmp~0#1| 2147483648)) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~tmp___5~0#1| 2147483648)) (<= |ULTIMATE.start_ssl3_accept_~s__session__peer~0#1| 2147483647) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~s__ctx__info_callback~0#1| 2147483648)) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~cb~0#1| 2147483648)) (<= |ULTIMATE.start_ssl3_accept_~s__s3__tmp__reuse_message~0#1| 2147483647) (<= |ULTIMATE.start_ssl3_accept_#in~initial_state#1| 8464) (<= |ULTIMATE.start_ssl3_accept_~tmp___10~0#1| 2147483647) (<= 0 (+ 2147483648 |ULTIMATE.start_ssl3_accept_~s__hit~0#1|)) (<= |ULTIMATE.start_ssl3_accept_~tmp___4~0#1| 2147483647) (<= |ULTIMATE.start_ssl3_accept_~tmp___3~0#1| 2147483647) (<= |ULTIMATE.start_ssl3_accept_~s__s3__tmp__new_cipher__algorithms~0#1| 2147483647) (<= |ULTIMATE.start_ssl3_accept_~s__hit~0#1| 2147483647) (<= |ULTIMATE.start_ssl3_accept_~s__cert~0#1| 2147483647) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~s__s3__tmp__new_cipher~0#1| 2147483648)) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~s__info_callback~0#1| 2147483648)) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~tmp___4~0#1| 2147483648)) (<= |ULTIMATE.start_ssl3_accept_~tmp___9~0#1| 2147483647) (<= 0 |ULTIMATE.start_ssl3_accept_~got_new_session~0#1|) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~s__debug~0#1| 2147483648)) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~s__cert__pkeys__AT0__privatekey~0#1| 2147483648)) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~tmp___3~0#1| 2147483648)) (= |ULTIMATE.start_ssl3_accept_~blastFlag~0#1| 4) (= 8464 |ULTIMATE.start_main_~s~0#1|) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~s__session__peer~0#1| 2147483648)) (<= 0 (+ 2147483648 |ULTIMATE.start_ssl3_accept_~s__s3__tmp__new_cipher__algo_strength~0#1|)) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~s__init_buf___0~0#1| 2147483648)) (<= 8464 |ULTIMATE.start_ssl3_accept_~initial_state#1|) (<= |ULTIMATE.start_ssl3_accept_~s__options~0#1| 2147483647) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~Time~0#1| 2147483648)) (<= |ULTIMATE.start_ssl3_accept_~Time~0#1| 2147483647) (<= |ULTIMATE.start_ssl3_accept_~s__debug~0#1| 2147483647) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~s__options~0#1| 2147483648)) (<= |ULTIMATE.start_ssl3_accept_~tmp___8~0#1| 2147483647) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~s__ctx__stats__sess_accept_renegotiate~0#1| 2147483648)) (= |ULTIMATE.start_ssl3_accept_~s__state~0#1| 8672) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~ag_X~0#1| 2147483648)) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~num1~0#1| 2147483648)) (<= |ULTIMATE.start_ssl3_accept_~tmp___5~0#1| 2147483647) (= |#NULL.offset| 0) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~tmp___8~0#1| 2147483648)) (<= |ULTIMATE.start_ssl3_accept_~s__init_buf___0~0#1| 2147483647) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~s__ctx__stats__sess_accept~0#1| 2147483648)) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~s__s3__tmp__new_cipher__algorithms~0#1| 2147483648)) (<= |ULTIMATE.start_ssl3_accept_~s__cert__pkeys__AT0__privatekey~0#1| 2147483647) (<= |ULTIMATE.start_ssl3_accept_~num1~0#1| 2147483647) (<= |ULTIMATE.start_ssl3_accept_~s__ctx__stats__sess_accept_renegotiate~0#1| 2147483647) (<= 8464 |ULTIMATE.start_ssl3_accept_#in~initial_state#1|) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~s__s3__tmp__next_state___0~0#1| 2147483648)) (<= 0 |#StackHeapBarrier|) (<= |ULTIMATE.start_ssl3_accept_~ag_Y~0#1| 2147483647) (<= |ULTIMATE.start_ssl3_accept_~ret~0#1| 2147483647) (<= 0 (+ 2147483648 |ULTIMATE.start_ssl3_accept_~ag_Y~0#1|)) (<= |ULTIMATE.start_ssl3_accept_~cb~0#1| 2147483647) (= |#NULL.base| 0) (<= |ULTIMATE.start_ssl3_accept_~s__ctx__info_callback~0#1| 2147483647))' at error location [2022-11-03 02:09:06,161 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-03 02:09:06,161 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-03 02:09:06,161 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2022-11-03 02:09:06,161 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1872471952] [2022-11-03 02:09:06,162 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-03 02:09:06,163 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-03 02:09:06,163 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:09:06,163 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-03 02:09:06,165 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1232, Invalid=4170, Unknown=0, NotChecked=0, Total=5402 [2022-11-03 02:09:06,165 INFO L87 Difference]: Start difference. First operand 33643 states and 41878 transitions. Second operand has 11 states, 11 states have (on average 42.81818181818182) internal successors, (471), 11 states have internal predecessors, (471), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:09:11,157 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:09:11,158 INFO L93 Difference]: Finished difference Result 76242 states and 95547 transitions. [2022-11-03 02:09:11,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-11-03 02:09:11,158 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 42.81818181818182) internal successors, (471), 11 states have internal predecessors, (471), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 543 [2022-11-03 02:09:11,159 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:09:11,220 INFO L225 Difference]: With dead ends: 76242 [2022-11-03 02:09:11,221 INFO L226 Difference]: Without dead ends: 43336 [2022-11-03 02:09:11,242 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1651 GetRequests, 1504 SyntacticMatches, 66 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8181 ImplicationChecksByTransitivity, 46.5s TimeCoverageRelationStatistics Valid=1340, Invalid=5466, Unknown=0, NotChecked=0, Total=6806 [2022-11-03 02:09:11,244 INFO L413 NwaCegarLoop]: 273 mSDtfsCounter, 596 mSDsluCounter, 962 mSDsCounter, 0 mSdLazyCounter, 1545 mSolverCounterSat, 192 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 596 SdHoareTripleChecker+Valid, 1163 SdHoareTripleChecker+Invalid, 1975 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 192 IncrementalHoareTripleChecker+Valid, 1545 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 238 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-11-03 02:09:11,244 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [596 Valid, 1163 Invalid, 1975 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [192 Valid, 1545 Invalid, 0 Unknown, 238 Unchecked, 1.6s Time] [2022-11-03 02:09:11,282 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43336 states. [2022-11-03 02:09:14,074 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43336 to 40853. [2022-11-03 02:09:14,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40853 states, 40852 states have (on average 1.2598893567022422) internal successors, (51469), 40852 states have internal predecessors, (51469), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:09:14,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40853 states to 40853 states and 51469 transitions. [2022-11-03 02:09:14,161 INFO L78 Accepts]: Start accepts. Automaton has 40853 states and 51469 transitions. Word has length 543 [2022-11-03 02:09:14,162 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:09:14,162 INFO L495 AbstractCegarLoop]: Abstraction has 40853 states and 51469 transitions. [2022-11-03 02:09:14,162 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 42.81818181818182) internal successors, (471), 11 states have internal predecessors, (471), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:09:14,163 INFO L276 IsEmpty]: Start isEmpty. Operand 40853 states and 51469 transitions. [2022-11-03 02:09:14,212 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 547 [2022-11-03 02:09:14,212 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:09:14,213 INFO L195 NwaCegarLoop]: trace histogram [20, 20, 20, 20, 20, 20, 20, 20, 20, 19, 19, 19, 19, 19, 18, 17, 15, 15, 13, 13, 11, 11, 11, 11, 8, 6, 6, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:09:14,253 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ee2a8cb-6409-450d-aa92-d2d352c0a6d2/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-11-03 02:09:14,438 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ee2a8cb-6409-450d-aa92-d2d352c0a6d2/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:09:14,439 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:09:14,439 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:09:14,439 INFO L85 PathProgramCache]: Analyzing trace with hash 510617610, now seen corresponding path program 1 times [2022-11-03 02:09:14,439 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:09:14,439 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1627908834] [2022-11-03 02:09:14,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:09:14,440 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:09:14,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:09:14,589 INFO L134 CoverageAnalysis]: Checked inductivity of 3764 backedges. 2100 proven. 0 refuted. 0 times theorem prover too weak. 1664 trivial. 0 not checked. [2022-11-03 02:09:14,589 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:09:14,589 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1627908834] [2022-11-03 02:09:14,590 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1627908834] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:09:14,590 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:09:14,590 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 02:09:14,590 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [135521443] [2022-11-03 02:09:14,590 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:09:14,591 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:09:14,591 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:09:14,591 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:09:14,592 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:09:14,592 INFO L87 Difference]: Start difference. First operand 40853 states and 51469 transitions. Second operand has 3 states, 3 states have (on average 56.0) internal successors, (168), 3 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:09:17,001 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:09:17,001 INFO L93 Difference]: Finished difference Result 81505 states and 102318 transitions. [2022-11-03 02:09:17,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:09:17,002 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 56.0) internal successors, (168), 3 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 546 [2022-11-03 02:09:17,002 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:09:17,056 INFO L225 Difference]: With dead ends: 81505 [2022-11-03 02:09:17,056 INFO L226 Difference]: Without dead ends: 40678 [2022-11-03 02:09:17,084 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:09:17,084 INFO L413 NwaCegarLoop]: 134 mSDtfsCounter, 7 mSDsluCounter, 55 mSDsCounter, 0 mSdLazyCounter, 125 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 184 SdHoareTripleChecker+Invalid, 131 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 125 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 02:09:17,085 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 184 Invalid, 131 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 125 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 02:09:17,122 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40678 states. [2022-11-03 02:09:19,268 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40678 to 40408. [2022-11-03 02:09:19,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40408 states, 40407 states have (on average 1.2360234612814611) internal successors, (49944), 40407 states have internal predecessors, (49944), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:09:19,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40408 states to 40408 states and 49944 transitions. [2022-11-03 02:09:19,336 INFO L78 Accepts]: Start accepts. Automaton has 40408 states and 49944 transitions. Word has length 546 [2022-11-03 02:09:19,337 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:09:19,337 INFO L495 AbstractCegarLoop]: Abstraction has 40408 states and 49944 transitions. [2022-11-03 02:09:19,337 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 56.0) internal successors, (168), 3 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:09:19,338 INFO L276 IsEmpty]: Start isEmpty. Operand 40408 states and 49944 transitions. [2022-11-03 02:09:19,392 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 582 [2022-11-03 02:09:19,392 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:09:19,393 INFO L195 NwaCegarLoop]: trace histogram [22, 22, 22, 22, 22, 22, 22, 22, 22, 21, 21, 21, 21, 19, 19, 17, 15, 15, 13, 13, 11, 11, 11, 11, 7, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1] [2022-11-03 02:09:19,393 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-11-03 02:09:19,393 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:09:19,393 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:09:19,394 INFO L85 PathProgramCache]: Analyzing trace with hash 1122386930, now seen corresponding path program 2 times [2022-11-03 02:09:19,394 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:09:19,394 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [480191726] [2022-11-03 02:09:19,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:09:19,394 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:09:19,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:09:19,978 INFO L134 CoverageAnalysis]: Checked inductivity of 4368 backedges. 1921 proven. 74 refuted. 0 times theorem prover too weak. 2373 trivial. 0 not checked. [2022-11-03 02:09:19,978 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:09:19,978 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [480191726] [2022-11-03 02:09:19,978 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [480191726] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 02:09:19,978 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [406262525] [2022-11-03 02:09:19,979 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-03 02:09:19,979 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:09:19,979 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ee2a8cb-6409-450d-aa92-d2d352c0a6d2/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:09:19,980 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ee2a8cb-6409-450d-aa92-d2d352c0a6d2/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 02:09:20,002 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ee2a8cb-6409-450d-aa92-d2d352c0a6d2/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-11-03 02:09:20,132 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 10 check-sat command(s) [2022-11-03 02:09:20,133 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-03 02:09:20,135 INFO L263 TraceCheckSpWp]: Trace formula consists of 453 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-03 02:09:20,141 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:09:20,569 INFO L134 CoverageAnalysis]: Checked inductivity of 4368 backedges. 2552 proven. 49 refuted. 0 times theorem prover too weak. 1767 trivial. 0 not checked. [2022-11-03 02:09:20,569 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 02:09:20,768 INFO L134 CoverageAnalysis]: Checked inductivity of 4368 backedges. 2552 proven. 49 refuted. 0 times theorem prover too weak. 1767 trivial. 0 not checked. [2022-11-03 02:09:20,768 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [406262525] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 02:09:20,769 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [223261672] [2022-11-03 02:09:20,771 INFO L159 IcfgInterpreter]: Started Sifa with 69 locations of interest [2022-11-03 02:09:20,771 INFO L166 IcfgInterpreter]: Building call graph [2022-11-03 02:09:20,771 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-03 02:09:20,772 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-03 02:09:20,772 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-03 02:09:54,097 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-03 02:10:41,921 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '626115#(and (<= 0 (+ |ULTIMATE.start_ssl3_accept_~s__s3__tmp__reuse_message~0#1| 2147483648)) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~tmp___9~0#1| 2147483648)) (<= |ULTIMATE.start_ssl3_accept_~s__s3__tmp__new_cipher~0#1| 2147483647) (= |ULTIMATE.start_ssl3_accept_~skip~0#1| 0) (<= |ULTIMATE.start_ssl3_accept_~ag_X~0#1| 2147483647) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~ret~0#1| 2147483648)) (<= |ULTIMATE.start_ssl3_accept_~initial_state#1| 8464) (<= |ULTIMATE.start_ssl3_accept_~s__ctx__stats__sess_accept~0#1| 2147483647) (<= |ULTIMATE.start_ssl3_accept_~s__s3__tmp__new_cipher__algo_strength~0#1| 2147483647) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~tmp___10~0#1| 2147483648)) (<= |ULTIMATE.start_ssl3_accept_~s__s3__tmp__next_state___0~0#1| 2147483647) (<= |ULTIMATE.start_ssl3_accept_~tmp~0#1| 2147483647) (<= |ULTIMATE.start_ssl3_accept_~s__info_callback~0#1| 2147483647) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~s__cert~0#1| 2147483648)) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~tmp~0#1| 2147483648)) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~tmp___5~0#1| 2147483648)) (<= |ULTIMATE.start_ssl3_accept_~s__session__peer~0#1| 2147483647) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~s__ctx__info_callback~0#1| 2147483648)) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~cb~0#1| 2147483648)) (<= |ULTIMATE.start_ssl3_accept_~s__s3__tmp__reuse_message~0#1| 2147483647) (<= |ULTIMATE.start_ssl3_accept_#in~initial_state#1| 8464) (<= |ULTIMATE.start_ssl3_accept_~tmp___10~0#1| 2147483647) (<= 0 (+ 2147483648 |ULTIMATE.start_ssl3_accept_~s__hit~0#1|)) (<= |ULTIMATE.start_ssl3_accept_~tmp___4~0#1| 2147483647) (<= |ULTIMATE.start_ssl3_accept_~tmp___3~0#1| 2147483647) (<= |ULTIMATE.start_ssl3_accept_~s__s3__tmp__new_cipher__algorithms~0#1| 2147483647) (<= |ULTIMATE.start_ssl3_accept_~s__hit~0#1| 2147483647) (<= |ULTIMATE.start_ssl3_accept_~s__cert~0#1| 2147483647) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~s__s3__tmp__new_cipher~0#1| 2147483648)) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~s__info_callback~0#1| 2147483648)) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~tmp___4~0#1| 2147483648)) (<= |ULTIMATE.start_ssl3_accept_~tmp___9~0#1| 2147483647) (<= 0 |ULTIMATE.start_ssl3_accept_~got_new_session~0#1|) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~s__debug~0#1| 2147483648)) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~s__cert__pkeys__AT0__privatekey~0#1| 2147483648)) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~tmp___3~0#1| 2147483648)) (= |ULTIMATE.start_ssl3_accept_~blastFlag~0#1| 4) (= 8464 |ULTIMATE.start_main_~s~0#1|) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~s__session__peer~0#1| 2147483648)) (<= 0 (+ 2147483648 |ULTIMATE.start_ssl3_accept_~s__s3__tmp__new_cipher__algo_strength~0#1|)) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~s__init_buf___0~0#1| 2147483648)) (<= 8464 |ULTIMATE.start_ssl3_accept_~initial_state#1|) (<= |ULTIMATE.start_ssl3_accept_~s__options~0#1| 2147483647) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~Time~0#1| 2147483648)) (<= |ULTIMATE.start_ssl3_accept_~Time~0#1| 2147483647) (<= |ULTIMATE.start_ssl3_accept_~s__debug~0#1| 2147483647) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~s__options~0#1| 2147483648)) (<= |ULTIMATE.start_ssl3_accept_~tmp___8~0#1| 2147483647) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~s__ctx__stats__sess_accept_renegotiate~0#1| 2147483648)) (= |ULTIMATE.start_ssl3_accept_~s__state~0#1| 8672) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~ag_X~0#1| 2147483648)) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~num1~0#1| 2147483648)) (<= |ULTIMATE.start_ssl3_accept_~tmp___5~0#1| 2147483647) (= |#NULL.offset| 0) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~tmp___8~0#1| 2147483648)) (<= |ULTIMATE.start_ssl3_accept_~s__init_buf___0~0#1| 2147483647) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~s__ctx__stats__sess_accept~0#1| 2147483648)) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~s__s3__tmp__new_cipher__algorithms~0#1| 2147483648)) (<= |ULTIMATE.start_ssl3_accept_~s__cert__pkeys__AT0__privatekey~0#1| 2147483647) (<= |ULTIMATE.start_ssl3_accept_~num1~0#1| 2147483647) (<= |ULTIMATE.start_ssl3_accept_~s__ctx__stats__sess_accept_renegotiate~0#1| 2147483647) (<= 8464 |ULTIMATE.start_ssl3_accept_#in~initial_state#1|) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~s__s3__tmp__next_state___0~0#1| 2147483648)) (<= 0 |#StackHeapBarrier|) (<= |ULTIMATE.start_ssl3_accept_~ag_Y~0#1| 2147483647) (<= |ULTIMATE.start_ssl3_accept_~ret~0#1| 2147483647) (<= 0 (+ 2147483648 |ULTIMATE.start_ssl3_accept_~ag_Y~0#1|)) (<= |ULTIMATE.start_ssl3_accept_~cb~0#1| 2147483647) (= |#NULL.base| 0) (<= |ULTIMATE.start_ssl3_accept_~s__ctx__info_callback~0#1| 2147483647))' at error location [2022-11-03 02:10:41,922 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-03 02:10:41,922 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-03 02:10:41,922 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 11 [2022-11-03 02:10:41,922 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [692024026] [2022-11-03 02:10:41,922 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-03 02:10:41,923 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-03 02:10:41,923 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:10:41,924 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-03 02:10:41,925 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1212, Invalid=4190, Unknown=0, NotChecked=0, Total=5402 [2022-11-03 02:10:41,925 INFO L87 Difference]: Start difference. First operand 40408 states and 49944 transitions. Second operand has 11 states, 11 states have (on average 30.727272727272727) internal successors, (338), 11 states have internal predecessors, (338), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:10:46,202 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:10:46,203 INFO L93 Difference]: Finished difference Result 85150 states and 105257 transitions. [2022-11-03 02:10:46,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-11-03 02:10:46,203 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 30.727272727272727) internal successors, (338), 11 states have internal predecessors, (338), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 581 [2022-11-03 02:10:46,204 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:10:46,204 INFO L225 Difference]: With dead ends: 85150 [2022-11-03 02:10:46,204 INFO L226 Difference]: Without dead ends: 0 [2022-11-03 02:10:46,239 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1780 GetRequests, 1626 SyntacticMatches, 66 SemanticMatches, 88 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8844 ImplicationChecksByTransitivity, 48.1s TimeCoverageRelationStatistics Valid=1399, Invalid=6611, Unknown=0, NotChecked=0, Total=8010 [2022-11-03 02:10:46,240 INFO L413 NwaCegarLoop]: 201 mSDtfsCounter, 744 mSDsluCounter, 1028 mSDsCounter, 0 mSdLazyCounter, 2036 mSolverCounterSat, 144 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 744 SdHoareTripleChecker+Valid, 1158 SdHoareTripleChecker+Invalid, 2180 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 144 IncrementalHoareTripleChecker+Valid, 2036 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-11-03 02:10:46,240 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [744 Valid, 1158 Invalid, 2180 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [144 Valid, 2036 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-11-03 02:10:46,241 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-11-03 02:10:46,241 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-11-03 02:10:46,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:10:46,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-11-03 02:10:46,241 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 581 [2022-11-03 02:10:46,242 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:10:46,242 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-11-03 02:10:46,242 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 30.727272727272727) internal successors, (338), 11 states have internal predecessors, (338), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:10:46,242 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-11-03 02:10:46,242 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-11-03 02:10:46,245 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-11-03 02:10:46,291 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ee2a8cb-6409-450d-aa92-d2d352c0a6d2/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-11-03 02:10:46,458 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ee2a8cb-6409-450d-aa92-d2d352c0a6d2/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:10:46,460 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2022-11-03 02:10:51,622 WARN L234 SmtUtils]: Spent 5.15s on a formula simplification. DAG size of input: 344 DAG size of output: 335 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or) [2022-11-03 02:10:56,744 WARN L234 SmtUtils]: Spent 5.12s on a formula simplification. DAG size of input: 343 DAG size of output: 334 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or) [2022-11-03 02:13:18,536 WARN L234 SmtUtils]: Spent 2.36m on a formula simplification. DAG size of input: 1588 DAG size of output: 1467 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or) [2022-11-03 02:13:58,668 WARN L234 SmtUtils]: Spent 36.92s on a formula simplification. DAG size of input: 447 DAG size of output: 448 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or) [2022-11-03 02:14:11,816 WARN L234 SmtUtils]: Spent 6.11s on a formula simplification. DAG size of input: 251 DAG size of output: 252 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or)