/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/taipan/svcomp-Reach-32bit-Taipan_Default.epf -tc ../../../trunk/examples/toolchains/AutomizerC.xml --sifa.abstract.domain IntervalDomain -i ../sv-benchmarks/c/bitvector/s3_srvr_2a.BV.c.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-f954360 [2023-03-31 21:06:03,163 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-03-31 21:06:03,165 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-03-31 21:06:03,191 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-03-31 21:06:03,191 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-03-31 21:06:03,193 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-03-31 21:06:03,197 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-03-31 21:06:03,198 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-03-31 21:06:03,199 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-03-31 21:06:03,203 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-03-31 21:06:03,204 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-03-31 21:06:03,205 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-03-31 21:06:03,205 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-03-31 21:06:03,207 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-03-31 21:06:03,208 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-03-31 21:06:03,209 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-03-31 21:06:03,210 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-03-31 21:06:03,210 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-03-31 21:06:03,212 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-03-31 21:06:03,216 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-03-31 21:06:03,217 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-03-31 21:06:03,218 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-03-31 21:06:03,218 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-03-31 21:06:03,219 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-03-31 21:06:03,225 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-03-31 21:06:03,226 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-03-31 21:06:03,226 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-03-31 21:06:03,227 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-03-31 21:06:03,227 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-03-31 21:06:03,227 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-03-31 21:06:03,228 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-03-31 21:06:03,228 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-03-31 21:06:03,228 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-03-31 21:06:03,229 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-03-31 21:06:03,229 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-03-31 21:06:03,229 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-03-31 21:06:03,230 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-03-31 21:06:03,230 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-03-31 21:06:03,230 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-03-31 21:06:03,230 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-03-31 21:06:03,231 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-03-31 21:06:03,232 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-32bit-Taipan_Default.epf [2023-03-31 21:06:03,249 INFO L113 SettingsManager]: Loading preferences was successful [2023-03-31 21:06:03,249 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-03-31 21:06:03,250 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-03-31 21:06:03,250 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-03-31 21:06:03,250 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-03-31 21:06:03,250 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-03-31 21:06:03,250 INFO L138 SettingsManager]: * User list type=DISABLED [2023-03-31 21:06:03,250 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-03-31 21:06:03,250 INFO L138 SettingsManager]: * Explicit value domain=true [2023-03-31 21:06:03,251 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-03-31 21:06:03,251 INFO L138 SettingsManager]: * Octagon Domain=false [2023-03-31 21:06:03,251 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2023-03-31 21:06:03,251 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-03-31 21:06:03,251 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-03-31 21:06:03,251 INFO L138 SettingsManager]: * Interval Domain=false [2023-03-31 21:06:03,251 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-03-31 21:06:03,251 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-03-31 21:06:03,251 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2023-03-31 21:06:03,252 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-03-31 21:06:03,252 INFO L138 SettingsManager]: * sizeof long=4 [2023-03-31 21:06:03,252 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-03-31 21:06:03,252 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-03-31 21:06:03,252 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-03-31 21:06:03,252 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-03-31 21:06:03,252 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-03-31 21:06:03,252 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-03-31 21:06:03,252 INFO L138 SettingsManager]: * sizeof long double=12 [2023-03-31 21:06:03,252 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-03-31 21:06:03,253 INFO L138 SettingsManager]: * Use constant arrays=true [2023-03-31 21:06:03,253 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-03-31 21:06:03,253 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-03-31 21:06:03,253 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-03-31 21:06:03,253 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-03-31 21:06:03,253 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-03-31 21:06:03,253 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2023-03-31 21:06:03,253 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-03-31 21:06:03,253 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-03-31 21:06:03,254 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-03-31 21:06:03,254 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-03-31 21:06:03,254 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-03-31 21:06:03,254 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-03-31 21:06:03,254 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:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Abstract Domain -> IntervalDomain [2023-03-31 21:06:03,439 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-03-31 21:06:03,463 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-03-31 21:06:03,465 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-03-31 21:06:03,465 INFO L271 PluginConnector]: Initializing CDTParser... [2023-03-31 21:06:03,466 INFO L275 PluginConnector]: CDTParser initialized [2023-03-31 21:06:03,467 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/bitvector/s3_srvr_2a.BV.c.cil.c [2023-03-31 21:06:04,475 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-03-31 21:06:04,632 INFO L351 CDTParser]: Found 1 translation units. [2023-03-31 21:06:04,632 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/bitvector/s3_srvr_2a.BV.c.cil.c [2023-03-31 21:06:04,646 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/35b50526d/3d793eecdec64c37ac770dce4ae85660/FLAGd9f839fe9 [2023-03-31 21:06:04,657 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/35b50526d/3d793eecdec64c37ac770dce4ae85660 [2023-03-31 21:06:04,659 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-03-31 21:06:04,660 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2023-03-31 21:06:04,661 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-03-31 21:06:04,661 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-03-31 21:06:04,666 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-03-31 21:06:04,667 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.03 09:06:04" (1/1) ... [2023-03-31 21:06:04,668 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1b3cce00 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 09:06:04, skipping insertion in model container [2023-03-31 21:06:04,668 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.03 09:06:04" (1/1) ... [2023-03-31 21:06:04,674 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-03-31 21:06:04,703 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-03-31 21:06:04,851 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/bitvector/s3_srvr_2a.BV.c.cil.c[44872,44885] [2023-03-31 21:06:04,857 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-03-31 21:06:04,865 INFO L203 MainTranslator]: Completed pre-run [2023-03-31 21:06:04,913 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/bitvector/s3_srvr_2a.BV.c.cil.c[44872,44885] [2023-03-31 21:06:04,915 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-03-31 21:06:04,927 INFO L208 MainTranslator]: Completed translation [2023-03-31 21:06:04,928 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 09:06:04 WrapperNode [2023-03-31 21:06:04,928 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-03-31 21:06:04,929 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-03-31 21:06:04,929 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-03-31 21:06:04,929 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-03-31 21:06:04,944 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 09:06:04" (1/1) ... [2023-03-31 21:06:04,944 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 09:06:04" (1/1) ... [2023-03-31 21:06:04,958 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 09:06:04" (1/1) ... [2023-03-31 21:06:04,959 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 09:06:04" (1/1) ... [2023-03-31 21:06:04,967 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 09:06:04" (1/1) ... [2023-03-31 21:06:04,976 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 09:06:04" (1/1) ... [2023-03-31 21:06:04,978 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 09:06:04" (1/1) ... [2023-03-31 21:06:04,979 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 09:06:04" (1/1) ... [2023-03-31 21:06:04,982 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-03-31 21:06:04,983 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-03-31 21:06:04,983 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-03-31 21:06:04,983 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-03-31 21:06:04,984 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 09:06:04" (1/1) ... [2023-03-31 21:06:04,988 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-03-31 21:06:04,997 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-03-31 21:06:05,016 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-03-31 21:06:05,022 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-03-31 21:06:05,042 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2023-03-31 21:06:05,042 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-03-31 21:06:05,042 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-03-31 21:06:05,042 INFO L138 BoogieDeclarations]: Found implementation of procedure ssl3_accept [2023-03-31 21:06:05,042 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2023-03-31 21:06:05,042 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2023-03-31 21:06:05,042 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2023-03-31 21:06:05,042 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-03-31 21:06:05,043 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-03-31 21:06:05,043 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_long [2023-03-31 21:06:05,043 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2023-03-31 21:06:05,043 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uint [2023-03-31 21:06:05,043 INFO L130 BoogieDeclarations]: Found specification of procedure ssl3_accept [2023-03-31 21:06:05,043 INFO L130 BoogieDeclarations]: Found specification of procedure main [2023-03-31 21:06:05,043 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2023-03-31 21:06:05,043 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-03-31 21:06:05,043 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-03-31 21:06:05,043 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-03-31 21:06:05,043 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-03-31 21:06:05,043 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-03-31 21:06:05,161 INFO L236 CfgBuilder]: Building ICFG [2023-03-31 21:06:05,163 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-03-31 21:06:05,263 WARN L818 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2023-03-31 21:06:05,657 INFO L771 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##90: assume false; [2023-03-31 21:06:05,657 INFO L771 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##91: assume !false; [2023-03-31 21:06:05,662 INFO L277 CfgBuilder]: Performing block encoding [2023-03-31 21:06:05,791 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-03-31 21:06:05,792 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-03-31 21:06:05,794 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.03 09:06:05 BoogieIcfgContainer [2023-03-31 21:06:05,794 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-03-31 21:06:05,795 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-03-31 21:06:05,796 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-03-31 21:06:05,798 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-03-31 21:06:05,798 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.03 09:06:04" (1/3) ... [2023-03-31 21:06:05,798 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2ca5fdbf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.03 09:06:05, skipping insertion in model container [2023-03-31 21:06:05,798 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 09:06:04" (2/3) ... [2023-03-31 21:06:05,798 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2ca5fdbf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.03 09:06:05, skipping insertion in model container [2023-03-31 21:06:05,798 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.03 09:06:05" (3/3) ... [2023-03-31 21:06:05,799 INFO L112 eAbstractionObserver]: Analyzing ICFG s3_srvr_2a.BV.c.cil.c [2023-03-31 21:06:05,812 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-03-31 21:06:05,813 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-03-31 21:06:05,853 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-03-31 21:06:05,858 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;@22617755, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-03-31 21:06:05,858 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-03-31 21:06:05,862 INFO L276 IsEmpty]: Start isEmpty. Operand has 114 states, 106 states have (on average 1.7547169811320755) internal successors, (186), 107 states have internal predecessors, (186), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-03-31 21:06:05,870 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2023-03-31 21:06:05,870 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 21:06:05,871 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, 1, 1, 1, 1, 1] [2023-03-31 21:06:05,871 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 21:06:05,874 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 21:06:05,875 INFO L85 PathProgramCache]: Analyzing trace with hash 1463176713, now seen corresponding path program 1 times [2023-03-31 21:06:05,881 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-03-31 21:06:05,881 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1191104071] [2023-03-31 21:06:05,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 21:06:05,882 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 21:06:05,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 21:06:06,128 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-31 21:06:06,129 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-03-31 21:06:06,129 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1191104071] [2023-03-31 21:06:06,129 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1191104071] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 21:06:06,129 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 21:06:06,130 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-03-31 21:06:06,132 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1815949374] [2023-03-31 21:06:06,132 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 21:06:06,135 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-03-31 21:06:06,135 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-03-31 21:06:06,161 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-03-31 21:06:06,161 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-03-31 21:06:06,163 INFO L87 Difference]: Start difference. First operand has 114 states, 106 states have (on average 1.7547169811320755) internal successors, (186), 107 states have internal predecessors, (186), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 21:06:06,278 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 21:06:06,279 INFO L93 Difference]: Finished difference Result 307 states and 527 transitions. [2023-03-31 21:06:06,281 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-03-31 21:06:06,282 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 45 [2023-03-31 21:06:06,282 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 21:06:06,289 INFO L225 Difference]: With dead ends: 307 [2023-03-31 21:06:06,290 INFO L226 Difference]: Without dead ends: 187 [2023-03-31 21:06:06,292 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 [2023-03-31 21:06:06,295 INFO L413 NwaCegarLoop]: 157 mSDtfsCounter, 123 mSDsluCounter, 154 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 123 SdHoareTripleChecker+Valid, 311 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-03-31 21:06:06,295 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [123 Valid, 311 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-03-31 21:06:06,312 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 187 states. [2023-03-31 21:06:06,346 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 187 to 186. [2023-03-31 21:06:06,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 186 states, 181 states have (on average 1.5027624309392265) internal successors, (272), 181 states have internal predecessors, (272), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 21:06:06,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 186 states to 186 states and 276 transitions. [2023-03-31 21:06:06,352 INFO L78 Accepts]: Start accepts. Automaton has 186 states and 276 transitions. Word has length 45 [2023-03-31 21:06:06,352 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 21:06:06,353 INFO L495 AbstractCegarLoop]: Abstraction has 186 states and 276 transitions. [2023-03-31 21:06:06,353 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 21:06:06,353 INFO L276 IsEmpty]: Start isEmpty. Operand 186 states and 276 transitions. [2023-03-31 21:06:06,355 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2023-03-31 21:06:06,355 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 21:06:06,355 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, 1, 1, 1, 1, 1, 1] [2023-03-31 21:06:06,356 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-03-31 21:06:06,356 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 21:06:06,356 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 21:06:06,356 INFO L85 PathProgramCache]: Analyzing trace with hash -1894258961, now seen corresponding path program 1 times [2023-03-31 21:06:06,357 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-03-31 21:06:06,357 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1068619971] [2023-03-31 21:06:06,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 21:06:06,357 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 21:06:06,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 21:06:06,544 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-31 21:06:06,545 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-03-31 21:06:06,545 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1068619971] [2023-03-31 21:06:06,545 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1068619971] provided 0 perfect and 1 imperfect interpolant sequences [2023-03-31 21:06:06,545 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1505130469] [2023-03-31 21:06:06,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 21:06:06,545 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-03-31 21:06:06,546 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-03-31 21:06:06,548 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-03-31 21:06:06,549 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-03-31 21:06:06,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 21:06:06,617 INFO L262 TraceCheckSpWp]: Trace formula consists of 180 conjuncts, 4 conjunts are in the unsatisfiable core [2023-03-31 21:06:06,621 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-03-31 21:06:06,710 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-31 21:06:06,710 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-03-31 21:06:06,829 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-03-31 21:06:06,829 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1505130469] provided 1 perfect and 1 imperfect interpolant sequences [2023-03-31 21:06:06,829 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-03-31 21:06:06,829 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4, 4] total 5 [2023-03-31 21:06:06,830 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [741285546] [2023-03-31 21:06:06,830 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 21:06:06,830 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-03-31 21:06:06,831 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-03-31 21:06:06,831 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-03-31 21:06:06,831 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-03-31 21:06:06,831 INFO L87 Difference]: Start difference. First operand 186 states and 276 transitions. Second operand has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 21:06:06,904 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 21:06:06,904 INFO L93 Difference]: Finished difference Result 362 states and 542 transitions. [2023-03-31 21:06:06,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-03-31 21:06:06,905 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 59 [2023-03-31 21:06:06,906 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 21:06:06,912 INFO L225 Difference]: With dead ends: 362 [2023-03-31 21:06:06,912 INFO L226 Difference]: Without dead ends: 360 [2023-03-31 21:06:06,913 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 118 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-03-31 21:06:06,915 INFO L413 NwaCegarLoop]: 130 mSDtfsCounter, 91 mSDsluCounter, 128 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 91 SdHoareTripleChecker+Valid, 258 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-03-31 21:06:06,916 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [91 Valid, 258 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-03-31 21:06:06,919 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 360 states. [2023-03-31 21:06:06,939 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 360 to 358. [2023-03-31 21:06:06,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 358 states, 353 states have (on average 1.5127478753541077) internal successors, (534), 353 states have internal predecessors, (534), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 21:06:06,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 358 states to 358 states and 538 transitions. [2023-03-31 21:06:06,942 INFO L78 Accepts]: Start accepts. Automaton has 358 states and 538 transitions. Word has length 59 [2023-03-31 21:06:06,942 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 21:06:06,942 INFO L495 AbstractCegarLoop]: Abstraction has 358 states and 538 transitions. [2023-03-31 21:06:06,943 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 21:06:06,943 INFO L276 IsEmpty]: Start isEmpty. Operand 358 states and 538 transitions. [2023-03-31 21:06:06,945 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2023-03-31 21:06:06,945 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 21:06:06,945 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, 1, 1, 1, 1, 1, 1] [2023-03-31 21:06:06,969 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-03-31 21:06:07,146 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-03-31 21:06:07,147 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 21:06:07,147 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 21:06:07,147 INFO L85 PathProgramCache]: Analyzing trace with hash 267368873, now seen corresponding path program 1 times [2023-03-31 21:06:07,147 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-03-31 21:06:07,148 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [646279284] [2023-03-31 21:06:07,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 21:06:07,148 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 21:06:07,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 21:06:07,298 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-03-31 21:06:07,298 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-03-31 21:06:07,298 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [646279284] [2023-03-31 21:06:07,298 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [646279284] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 21:06:07,298 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 21:06:07,299 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-03-31 21:06:07,299 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [586860638] [2023-03-31 21:06:07,299 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 21:06:07,299 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-03-31 21:06:07,299 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-03-31 21:06:07,300 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-03-31 21:06:07,300 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-03-31 21:06:07,300 INFO L87 Difference]: Start difference. First operand 358 states and 538 transitions. Second operand has 4 states, 4 states have (on average 15.75) internal successors, (63), 4 states have internal predecessors, (63), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 21:06:07,508 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 21:06:07,508 INFO L93 Difference]: Finished difference Result 636 states and 968 transitions. [2023-03-31 21:06:07,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-03-31 21:06:07,509 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.75) internal successors, (63), 4 states have internal predecessors, (63), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 76 [2023-03-31 21:06:07,509 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 21:06:07,511 INFO L225 Difference]: With dead ends: 636 [2023-03-31 21:06:07,511 INFO L226 Difference]: Without dead ends: 458 [2023-03-31 21:06:07,512 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-03-31 21:06:07,512 INFO L413 NwaCegarLoop]: 139 mSDtfsCounter, 11 mSDsluCounter, 118 mSDsCounter, 0 mSdLazyCounter, 237 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 257 SdHoareTripleChecker+Invalid, 264 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 237 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-03-31 21:06:07,513 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 257 Invalid, 264 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 237 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-03-31 21:06:07,514 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 458 states. [2023-03-31 21:06:07,527 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 458 to 434. [2023-03-31 21:06:07,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 434 states, 429 states have (on average 1.4405594405594406) internal successors, (618), 429 states have internal predecessors, (618), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 21:06:07,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 434 states to 434 states and 622 transitions. [2023-03-31 21:06:07,530 INFO L78 Accepts]: Start accepts. Automaton has 434 states and 622 transitions. Word has length 76 [2023-03-31 21:06:07,530 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 21:06:07,530 INFO L495 AbstractCegarLoop]: Abstraction has 434 states and 622 transitions. [2023-03-31 21:06:07,530 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.75) internal successors, (63), 4 states have internal predecessors, (63), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 21:06:07,530 INFO L276 IsEmpty]: Start isEmpty. Operand 434 states and 622 transitions. [2023-03-31 21:06:07,534 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2023-03-31 21:06:07,534 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 21:06:07,534 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-31 21:06:07,534 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-03-31 21:06:07,535 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 21:06:07,535 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 21:06:07,535 INFO L85 PathProgramCache]: Analyzing trace with hash 411380507, now seen corresponding path program 1 times [2023-03-31 21:06:07,535 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-03-31 21:06:07,535 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [119494499] [2023-03-31 21:06:07,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 21:06:07,536 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 21:06:07,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 21:06:07,603 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 42 proven. 0 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2023-03-31 21:06:07,603 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-03-31 21:06:07,604 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [119494499] [2023-03-31 21:06:07,604 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [119494499] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 21:06:07,604 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 21:06:07,604 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-03-31 21:06:07,604 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [673701076] [2023-03-31 21:06:07,604 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 21:06:07,604 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-03-31 21:06:07,604 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-03-31 21:06:07,605 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-03-31 21:06:07,605 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-03-31 21:06:07,605 INFO L87 Difference]: Start difference. First operand 434 states and 622 transitions. Second operand has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 21:06:07,703 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 21:06:07,703 INFO L93 Difference]: Finished difference Result 992 states and 1448 transitions. [2023-03-31 21:06:07,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-03-31 21:06:07,704 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 95 [2023-03-31 21:06:07,706 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 21:06:07,707 INFO L225 Difference]: With dead ends: 992 [2023-03-31 21:06:07,707 INFO L226 Difference]: Without dead ends: 566 [2023-03-31 21:06:07,710 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 [2023-03-31 21:06:07,718 INFO L413 NwaCegarLoop]: 139 mSDtfsCounter, 21 mSDsluCounter, 55 mSDsCounter, 0 mSdLazyCounter, 118 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 194 SdHoareTripleChecker+Invalid, 130 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 118 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-03-31 21:06:07,719 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 194 Invalid, 130 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 118 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-03-31 21:06:07,721 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 566 states. [2023-03-31 21:06:07,736 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 566 to 526. [2023-03-31 21:06:07,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 526 states, 521 states have (on average 1.3857965451055663) internal successors, (722), 521 states have internal predecessors, (722), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 21:06:07,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 526 states to 526 states and 726 transitions. [2023-03-31 21:06:07,739 INFO L78 Accepts]: Start accepts. Automaton has 526 states and 726 transitions. Word has length 95 [2023-03-31 21:06:07,739 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 21:06:07,740 INFO L495 AbstractCegarLoop]: Abstraction has 526 states and 726 transitions. [2023-03-31 21:06:07,740 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 21:06:07,740 INFO L276 IsEmpty]: Start isEmpty. Operand 526 states and 726 transitions. [2023-03-31 21:06:07,749 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2023-03-31 21:06:07,749 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 21:06:07,749 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, 1, 1, 1, 1, 1, 1] [2023-03-31 21:06:07,749 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-03-31 21:06:07,750 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 21:06:07,750 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 21:06:07,750 INFO L85 PathProgramCache]: Analyzing trace with hash 553706901, now seen corresponding path program 1 times [2023-03-31 21:06:07,751 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-03-31 21:06:07,751 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1166945802] [2023-03-31 21:06:07,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 21:06:07,752 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 21:06:07,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 21:06:07,917 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 0 proven. 94 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-31 21:06:07,918 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-03-31 21:06:07,918 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1166945802] [2023-03-31 21:06:07,918 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1166945802] provided 0 perfect and 1 imperfect interpolant sequences [2023-03-31 21:06:07,920 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1288847027] [2023-03-31 21:06:07,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 21:06:07,924 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-03-31 21:06:07,924 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-03-31 21:06:07,935 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-03-31 21:06:07,960 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-03-31 21:06:08,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 21:06:08,028 INFO L262 TraceCheckSpWp]: Trace formula consists of 254 conjuncts, 7 conjunts are in the unsatisfiable core [2023-03-31 21:06:08,032 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-03-31 21:06:08,143 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 0 proven. 94 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-31 21:06:08,144 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-03-31 21:06:08,379 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 0 proven. 50 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2023-03-31 21:06:08,379 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1288847027] provided 0 perfect and 2 imperfect interpolant sequences [2023-03-31 21:06:08,379 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1824554631] [2023-03-31 21:06:08,396 INFO L159 IcfgInterpreter]: Started Sifa with 56 locations of interest [2023-03-31 21:06:08,396 INFO L166 IcfgInterpreter]: Building call graph [2023-03-31 21:06:08,399 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-03-31 21:06:08,411 INFO L176 IcfgInterpreter]: Starting interpretation [2023-03-31 21:06:08,411 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-03-31 21:06:08,458 INFO L197 IcfgInterpreter]: Interpreting procedure main with input of size 8 for LOIs [2023-03-31 21:06:08,462 INFO L197 IcfgInterpreter]: Interpreting procedure ssl3_accept with input of size 11 for LOIs [2023-03-31 21:06:13,104 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 7 for LOIs [2023-03-31 21:06:13,107 INFO L180 IcfgInterpreter]: Interpretation finished [2023-03-31 21:06:35,023 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '5872#(and (<= 0 (+ ssl3_accept_~ret~0 2147483648)) (<= ssl3_accept_~ag_Y~0 2147483647) (<= 0 (+ ssl3_accept_~s__cert__pkeys__AT0__privatekey~0 2147483648)) (<= ssl3_accept_~tmp~0 2147483647) (<= ssl3_accept_~s__ctx__stats__sess_accept_renegotiate~0 2147483647) (<= ssl3_accept_~Time~0 2147483647) (<= ssl3_accept_~s__ctx__stats__sess_accept~0 2147483647) (<= 0 (+ ssl3_accept_~cb~0 2147483648)) (<= ssl3_accept_~tmp___4~0 2147483647) (<= ssl3_accept_~s__s3__tmp__new_cipher~0 2147483647) (<= 0 (+ ssl3_accept_~s__cert~0 2147483648)) (<= 0 (+ ssl3_accept_~tmp~0 2147483648)) (<= 0 (+ ssl3_accept_~tmp___4~0 2147483648)) (<= 0 (+ ssl3_accept_~s__s3__tmp__reuse_message~0 2147483648)) (<= ssl3_accept_~tmp___5~0 2147483647) (<= ssl3_accept_~s__ctx__info_callback~0 2147483647) (<= 0 (+ ssl3_accept_~s__debug~0 2147483648)) (<= 0 (+ ssl3_accept_~s__hit~0 2147483648)) (<= 0 (+ ssl3_accept_~num1~0 2147483648)) (<= 0 (+ ssl3_accept_~ag_X~0 2147483648)) (<= 0 (+ ssl3_accept_~s__s3__tmp__new_cipher~0 2147483648)) (<= ssl3_accept_~s__s3__tmp__new_cipher__algorithms~0 2147483647) (<= 0 (+ ssl3_accept_~s__ctx__stats__sess_accept_renegotiate~0 2147483648)) (= ssl3_accept_~skip~0 0) (<= ssl3_accept_~s__session__peer~0 2147483647) (<= 0 (+ 2147483648 ssl3_accept_~s__s3__tmp__next_state___0~0)) (<= ssl3_accept_~ret~0 2147483647) (<= ssl3_accept_~ag_X~0 2147483647) (<= 0 (+ ssl3_accept_~tmp___3~0 2147483648)) (<= ssl3_accept_~cb~0 2147483647) (<= ssl3_accept_~s__options~0 2147483647) (<= 0 (+ ssl3_accept_~s__options~0 2147483648)) (<= ssl3_accept_~num1~0 2147483647) (<= 0 (+ ssl3_accept_~s__info_callback~0 2147483648)) (<= ssl3_accept_~s__hit~0 2147483647) (<= 0 (+ ssl3_accept_~tmp___5~0 2147483648)) (<= 0 (+ 2147483648 ssl3_accept_~s__ctx__stats__sess_accept~0)) (<= 0 (+ ssl3_accept_~s__session__peer~0 2147483648)) (<= ssl3_accept_~s__info_callback~0 2147483647) (<= ssl3_accept_~tmp___8~0 2147483647) (<= ssl3_accept_~s__s3__tmp__next_state___0~0 2147483647) (<= ssl3_accept_~s__cert~0 2147483647) (<= ssl3_accept_~tmp___9~0 2147483647) (<= 0 (+ 2147483648 ssl3_accept_~s__ctx__info_callback~0)) (<= ssl3_accept_~s__s3__tmp__reuse_message~0 2147483647) (<= ssl3_accept_~s__debug~0 2147483647) (<= 0 (+ ssl3_accept_~s__s3__tmp__new_cipher__algo_strength~0 2147483648)) (<= 0 (+ ssl3_accept_~tmp___8~0 2147483648)) (<= 0 ssl3_accept_~got_new_session~0) (<= ssl3_accept_~tmp___10~0 2147483647) (= |#NULL.offset| 0) (<= 0 (+ ssl3_accept_~Time~0 2147483648)) (<= ssl3_accept_~s__s3__tmp__new_cipher__algo_strength~0 2147483647) (= ssl3_accept_~blastFlag~0 4) (= ssl3_accept_~s__state~0 8672) (<= ssl3_accept_~s__cert__pkeys__AT0__privatekey~0 2147483647) (<= ssl3_accept_~tmp___3~0 2147483647) (= 8464 |ssl3_accept_#in~initial_state|) (<= 0 |#StackHeapBarrier|) (= 8464 ssl3_accept_~initial_state) (<= 0 (+ 2147483648 ssl3_accept_~tmp___10~0)) (<= 0 (+ ssl3_accept_~tmp___9~0 2147483648)) (<= 0 (+ ssl3_accept_~ag_Y~0 2147483648)) (= |#NULL.base| 0) (<= 0 (+ ssl3_accept_~s__s3__tmp__new_cipher__algorithms~0 2147483648)))' at error location [2023-03-31 21:06:35,023 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-03-31 21:06:35,023 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-03-31 21:06:35,023 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 4] total 8 [2023-03-31 21:06:35,023 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1621069273] [2023-03-31 21:06:35,023 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-03-31 21:06:35,025 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-03-31 21:06:35,025 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-03-31 21:06:35,025 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-03-31 21:06:35,033 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=757, Invalid=2783, Unknown=0, NotChecked=0, Total=3540 [2023-03-31 21:06:35,033 INFO L87 Difference]: Start difference. First operand 526 states and 726 transitions. Second operand has 8 states, 8 states have (on average 21.875) internal successors, (175), 8 states have internal predecessors, (175), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 21:06:35,155 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 21:06:35,156 INFO L93 Difference]: Finished difference Result 1010 states and 1409 transitions. [2023-03-31 21:06:35,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-03-31 21:06:35,156 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 21.875) internal successors, (175), 8 states have internal predecessors, (175), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 114 [2023-03-31 21:06:35,156 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 21:06:35,159 INFO L225 Difference]: With dead ends: 1010 [2023-03-31 21:06:35,159 INFO L226 Difference]: Without dead ends: 1008 [2023-03-31 21:06:35,160 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 347 GetRequests, 286 SyntacticMatches, 3 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 915 ImplicationChecksByTransitivity, 21.9s TimeCoverageRelationStatistics Valid=757, Invalid=2783, Unknown=0, NotChecked=0, Total=3540 [2023-03-31 21:06:35,161 INFO L413 NwaCegarLoop]: 493 mSDtfsCounter, 912 mSDsluCounter, 1348 mSDsCounter, 0 mSdLazyCounter, 180 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 912 SdHoareTripleChecker+Valid, 1841 SdHoareTripleChecker+Invalid, 195 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 180 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-03-31 21:06:35,161 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [912 Valid, 1841 Invalid, 195 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 180 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-03-31 21:06:35,162 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1008 states. [2023-03-31 21:06:35,173 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1008 to 673. [2023-03-31 21:06:35,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 673 states, 668 states have (on average 1.3787425149700598) internal successors, (921), 668 states have internal predecessors, (921), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 21:06:35,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 673 states to 673 states and 925 transitions. [2023-03-31 21:06:35,175 INFO L78 Accepts]: Start accepts. Automaton has 673 states and 925 transitions. Word has length 114 [2023-03-31 21:06:35,176 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 21:06:35,176 INFO L495 AbstractCegarLoop]: Abstraction has 673 states and 925 transitions. [2023-03-31 21:06:35,176 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 21.875) internal successors, (175), 8 states have internal predecessors, (175), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 21:06:35,176 INFO L276 IsEmpty]: Start isEmpty. Operand 673 states and 925 transitions. [2023-03-31 21:06:35,178 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2023-03-31 21:06:35,178 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 21:06:35,178 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2023-03-31 21:06:35,185 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-03-31 21:06:35,382 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-03-31 21:06:35,383 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 21:06:35,383 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 21:06:35,383 INFO L85 PathProgramCache]: Analyzing trace with hash 965469231, now seen corresponding path program 2 times [2023-03-31 21:06:35,383 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-03-31 21:06:35,383 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1899794092] [2023-03-31 21:06:35,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 21:06:35,383 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 21:06:35,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 21:06:35,437 INFO L134 CoverageAnalysis]: Checked inductivity of 263 backedges. 194 proven. 0 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2023-03-31 21:06:35,437 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-03-31 21:06:35,439 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1899794092] [2023-03-31 21:06:35,439 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1899794092] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 21:06:35,439 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 21:06:35,439 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-03-31 21:06:35,439 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [574358627] [2023-03-31 21:06:35,439 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 21:06:35,439 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-03-31 21:06:35,440 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-03-31 21:06:35,440 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-03-31 21:06:35,440 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-03-31 21:06:35,440 INFO L87 Difference]: Start difference. First operand 673 states and 925 transitions. Second operand has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 3 states have internal predecessors, (109), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 21:06:35,546 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 21:06:35,546 INFO L93 Difference]: Finished difference Result 1502 states and 2130 transitions. [2023-03-31 21:06:35,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-03-31 21:06:35,546 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 3 states have internal predecessors, (109), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 169 [2023-03-31 21:06:35,546 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 21:06:35,549 INFO L225 Difference]: With dead ends: 1502 [2023-03-31 21:06:35,549 INFO L226 Difference]: Without dead ends: 837 [2023-03-31 21:06:35,550 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 [2023-03-31 21:06:35,550 INFO L413 NwaCegarLoop]: 139 mSDtfsCounter, 32 mSDsluCounter, 50 mSDsCounter, 0 mSdLazyCounter, 136 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 189 SdHoareTripleChecker+Invalid, 165 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 136 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-03-31 21:06:35,551 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [32 Valid, 189 Invalid, 165 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 136 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-03-31 21:06:35,552 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 837 states. [2023-03-31 21:06:35,563 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 837 to 829. [2023-03-31 21:06:35,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 829 states, 824 states have (on average 1.3216019417475728) internal successors, (1089), 824 states have internal predecessors, (1089), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 21:06:35,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 829 states to 829 states and 1093 transitions. [2023-03-31 21:06:35,566 INFO L78 Accepts]: Start accepts. Automaton has 829 states and 1093 transitions. Word has length 169 [2023-03-31 21:06:35,567 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 21:06:35,567 INFO L495 AbstractCegarLoop]: Abstraction has 829 states and 1093 transitions. [2023-03-31 21:06:35,567 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 3 states have internal predecessors, (109), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 21:06:35,567 INFO L276 IsEmpty]: Start isEmpty. Operand 829 states and 1093 transitions. [2023-03-31 21:06:35,569 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 209 [2023-03-31 21:06:35,569 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 21:06:35,569 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-31 21:06:35,569 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-03-31 21:06:35,569 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 21:06:35,570 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 21:06:35,570 INFO L85 PathProgramCache]: Analyzing trace with hash -1870602689, now seen corresponding path program 1 times [2023-03-31 21:06:35,570 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-03-31 21:06:35,570 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1320603189] [2023-03-31 21:06:35,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 21:06:35,570 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 21:06:35,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 21:06:35,640 INFO L134 CoverageAnalysis]: Checked inductivity of 409 backedges. 281 proven. 0 refuted. 0 times theorem prover too weak. 128 trivial. 0 not checked. [2023-03-31 21:06:35,641 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-03-31 21:06:35,641 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1320603189] [2023-03-31 21:06:35,641 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1320603189] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 21:06:35,641 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 21:06:35,641 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-03-31 21:06:35,641 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [127376715] [2023-03-31 21:06:35,641 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 21:06:35,641 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-03-31 21:06:35,642 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-03-31 21:06:35,642 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-03-31 21:06:35,642 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-03-31 21:06:35,642 INFO L87 Difference]: Start difference. First operand 829 states and 1093 transitions. Second operand has 3 states, 3 states have (on average 38.333333333333336) internal successors, (115), 3 states have internal predecessors, (115), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 21:06:35,760 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 21:06:35,760 INFO L93 Difference]: Finished difference Result 1855 states and 2538 transitions. [2023-03-31 21:06:35,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-03-31 21:06:35,761 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 38.333333333333336) internal successors, (115), 3 states have internal predecessors, (115), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 208 [2023-03-31 21:06:35,763 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 21:06:35,766 INFO L225 Difference]: With dead ends: 1855 [2023-03-31 21:06:35,768 INFO L226 Difference]: Without dead ends: 974 [2023-03-31 21:06:35,769 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 [2023-03-31 21:06:35,770 INFO L413 NwaCegarLoop]: 131 mSDtfsCounter, 31 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 131 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 183 SdHoareTripleChecker+Invalid, 164 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 131 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-03-31 21:06:35,770 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 183 Invalid, 164 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 131 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-03-31 21:06:35,771 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 974 states. [2023-03-31 21:06:35,789 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 974 to 974. [2023-03-31 21:06:35,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 974 states, 969 states have (on average 1.2889576883384932) internal successors, (1249), 969 states have internal predecessors, (1249), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 21:06:35,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 974 states to 974 states and 1253 transitions. [2023-03-31 21:06:35,793 INFO L78 Accepts]: Start accepts. Automaton has 974 states and 1253 transitions. Word has length 208 [2023-03-31 21:06:35,793 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 21:06:35,793 INFO L495 AbstractCegarLoop]: Abstraction has 974 states and 1253 transitions. [2023-03-31 21:06:35,793 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 38.333333333333336) internal successors, (115), 3 states have internal predecessors, (115), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 21:06:35,793 INFO L276 IsEmpty]: Start isEmpty. Operand 974 states and 1253 transitions. [2023-03-31 21:06:35,796 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 236 [2023-03-31 21:06:35,796 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 21:06:35,796 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, 1, 1, 1, 1, 1, 1] [2023-03-31 21:06:35,796 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-03-31 21:06:35,796 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 21:06:35,797 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 21:06:35,797 INFO L85 PathProgramCache]: Analyzing trace with hash 1361126514, now seen corresponding path program 1 times [2023-03-31 21:06:35,797 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-03-31 21:06:35,797 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [848665943] [2023-03-31 21:06:35,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 21:06:35,797 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 21:06:35,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 21:06:36,061 INFO L134 CoverageAnalysis]: Checked inductivity of 549 backedges. 393 proven. 95 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2023-03-31 21:06:36,061 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-03-31 21:06:36,061 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [848665943] [2023-03-31 21:06:36,061 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [848665943] provided 0 perfect and 1 imperfect interpolant sequences [2023-03-31 21:06:36,061 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [100832756] [2023-03-31 21:06:36,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 21:06:36,061 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-03-31 21:06:36,061 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-03-31 21:06:36,062 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-03-31 21:06:36,064 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-03-31 21:06:36,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 21:06:36,156 INFO L262 TraceCheckSpWp]: Trace formula consists of 409 conjuncts, 7 conjunts are in the unsatisfiable core [2023-03-31 21:06:36,165 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-03-31 21:06:36,337 INFO L134 CoverageAnalysis]: Checked inductivity of 549 backedges. 376 proven. 112 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2023-03-31 21:06:36,338 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-03-31 21:06:36,383 INFO L134 CoverageAnalysis]: Checked inductivity of 549 backedges. 406 proven. 15 refuted. 0 times theorem prover too weak. 128 trivial. 0 not checked. [2023-03-31 21:06:36,384 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [100832756] provided 0 perfect and 2 imperfect interpolant sequences [2023-03-31 21:06:36,384 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1337650302] [2023-03-31 21:06:36,388 INFO L159 IcfgInterpreter]: Started Sifa with 59 locations of interest [2023-03-31 21:06:36,388 INFO L166 IcfgInterpreter]: Building call graph [2023-03-31 21:06:36,389 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-03-31 21:06:36,390 INFO L176 IcfgInterpreter]: Starting interpretation [2023-03-31 21:06:36,390 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-03-31 21:06:36,406 INFO L197 IcfgInterpreter]: Interpreting procedure main with input of size 8 for LOIs [2023-03-31 21:06:36,409 INFO L197 IcfgInterpreter]: Interpreting procedure ssl3_accept with input of size 11 for LOIs [2023-03-31 21:06:48,531 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 7 for LOIs [2023-03-31 21:06:48,533 INFO L180 IcfgInterpreter]: Interpretation finished