/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 OctagonDomain -i ../sv-benchmarks/c/bitvector/s3_srvr_1a.BV.c.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-f954360 [2023-04-02 15:47:13,791 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-04-02 15:47:13,793 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-04-02 15:47:13,821 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-04-02 15:47:13,822 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-04-02 15:47:13,824 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-04-02 15:47:13,828 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-04-02 15:47:13,829 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-04-02 15:47:13,830 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-04-02 15:47:13,834 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-04-02 15:47:13,835 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-04-02 15:47:13,837 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-04-02 15:47:13,837 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-04-02 15:47:13,839 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-04-02 15:47:13,839 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-04-02 15:47:13,841 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-04-02 15:47:13,841 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-04-02 15:47:13,842 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-04-02 15:47:13,843 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-04-02 15:47:13,847 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-04-02 15:47:13,848 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-04-02 15:47:13,848 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-04-02 15:47:13,849 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-04-02 15:47:13,850 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-04-02 15:47:13,856 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-04-02 15:47:13,856 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-04-02 15:47:13,856 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-04-02 15:47:13,857 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-04-02 15:47:13,857 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-04-02 15:47:13,858 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-04-02 15:47:13,858 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-04-02 15:47:13,858 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-04-02 15:47:13,859 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-04-02 15:47:13,860 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-04-02 15:47:13,860 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-04-02 15:47:13,860 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-04-02 15:47:13,860 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-04-02 15:47:13,861 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-04-02 15:47:13,861 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-04-02 15:47:13,861 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-04-02 15:47:13,862 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-04-02 15:47:13,863 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 [2023-04-02 15:47:13,883 INFO L113 SettingsManager]: Loading preferences was successful [2023-04-02 15:47:13,883 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-04-02 15:47:13,883 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-04-02 15:47:13,883 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-04-02 15:47:13,884 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-04-02 15:47:13,884 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-04-02 15:47:13,884 INFO L138 SettingsManager]: * User list type=DISABLED [2023-04-02 15:47:13,884 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-04-02 15:47:13,884 INFO L138 SettingsManager]: * Explicit value domain=true [2023-04-02 15:47:13,884 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-04-02 15:47:13,885 INFO L138 SettingsManager]: * Octagon Domain=false [2023-04-02 15:47:13,885 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2023-04-02 15:47:13,885 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-04-02 15:47:13,885 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-04-02 15:47:13,885 INFO L138 SettingsManager]: * Interval Domain=false [2023-04-02 15:47:13,885 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-04-02 15:47:13,886 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-04-02 15:47:13,886 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2023-04-02 15:47:13,886 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-04-02 15:47:13,886 INFO L138 SettingsManager]: * sizeof long=4 [2023-04-02 15:47:13,886 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-04-02 15:47:13,886 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-04-02 15:47:13,886 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-04-02 15:47:13,886 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-04-02 15:47:13,886 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-04-02 15:47:13,886 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-04-02 15:47:13,887 INFO L138 SettingsManager]: * sizeof long double=12 [2023-04-02 15:47:13,887 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-04-02 15:47:13,887 INFO L138 SettingsManager]: * Use constant arrays=true [2023-04-02 15:47:13,887 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-04-02 15:47:13,887 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-04-02 15:47:13,887 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-04-02 15:47:13,887 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-02 15:47:13,887 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-04-02 15:47:13,888 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2023-04-02 15:47:13,888 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-04-02 15:47:13,888 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-04-02 15:47:13,888 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-04-02 15:47:13,888 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-04-02 15:47:13,888 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-04-02 15:47:13,888 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-04-02 15:47:13,888 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Abstract Domain -> OctagonDomain [2023-04-02 15:47:14,040 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-04-02 15:47:14,061 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-04-02 15:47:14,063 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-04-02 15:47:14,064 INFO L271 PluginConnector]: Initializing CDTParser... [2023-04-02 15:47:14,064 INFO L275 PluginConnector]: CDTParser initialized [2023-04-02 15:47:14,065 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/bitvector/s3_srvr_1a.BV.c.cil.c [2023-04-02 15:47:14,989 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-04-02 15:47:15,196 INFO L351 CDTParser]: Found 1 translation units. [2023-04-02 15:47:15,197 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/bitvector/s3_srvr_1a.BV.c.cil.c [2023-04-02 15:47:15,203 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b5165c6bb/33bbc2a0b263465fbf7261d78b690506/FLAGb75eecca0 [2023-04-02 15:47:15,214 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b5165c6bb/33bbc2a0b263465fbf7261d78b690506 [2023-04-02 15:47:15,215 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-04-02 15:47:15,216 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2023-04-02 15:47:15,217 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-04-02 15:47:15,217 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-04-02 15:47:15,221 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-04-02 15:47:15,221 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.04 03:47:15" (1/1) ... [2023-04-02 15:47:15,222 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@49ec25dd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 03:47:15, skipping insertion in model container [2023-04-02 15:47:15,222 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.04 03:47:15" (1/1) ... [2023-04-02 15:47:15,227 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-04-02 15:47:15,248 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-04-02 15:47:15,367 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_1a.BV.c.cil.c[44949,44962] [2023-04-02 15:47:15,373 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-02 15:47:15,379 INFO L203 MainTranslator]: Completed pre-run [2023-04-02 15:47:15,413 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_1a.BV.c.cil.c[44949,44962] [2023-04-02 15:47:15,415 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-02 15:47:15,424 INFO L208 MainTranslator]: Completed translation [2023-04-02 15:47:15,424 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 03:47:15 WrapperNode [2023-04-02 15:47:15,424 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-04-02 15:47:15,425 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-04-02 15:47:15,425 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-04-02 15:47:15,425 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-04-02 15:47:15,433 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 03:47:15" (1/1) ... [2023-04-02 15:47:15,433 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 03:47:15" (1/1) ... [2023-04-02 15:47:15,439 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 03:47:15" (1/1) ... [2023-04-02 15:47:15,439 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 03:47:15" (1/1) ... [2023-04-02 15:47:15,457 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 03:47:15" (1/1) ... [2023-04-02 15:47:15,467 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 03:47:15" (1/1) ... [2023-04-02 15:47:15,469 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 03:47:15" (1/1) ... [2023-04-02 15:47:15,470 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 03:47:15" (1/1) ... [2023-04-02 15:47:15,486 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-04-02 15:47:15,487 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-04-02 15:47:15,487 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-04-02 15:47:15,487 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-04-02 15:47:15,488 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 03:47:15" (1/1) ... [2023-04-02 15:47:15,492 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-02 15:47:15,501 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 15:47:15,530 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) [2023-04-02 15:47:15,553 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 [2023-04-02 15:47:15,565 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2023-04-02 15:47:15,565 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-04-02 15:47:15,565 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-04-02 15:47:15,565 INFO L138 BoogieDeclarations]: Found implementation of procedure ssl3_accept [2023-04-02 15:47:15,566 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2023-04-02 15:47:15,566 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2023-04-02 15:47:15,566 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2023-04-02 15:47:15,566 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-04-02 15:47:15,567 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-04-02 15:47:15,567 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_long [2023-04-02 15:47:15,567 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_ulong [2023-04-02 15:47:15,567 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2023-04-02 15:47:15,567 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uint [2023-04-02 15:47:15,567 INFO L130 BoogieDeclarations]: Found specification of procedure ssl3_accept [2023-04-02 15:47:15,567 INFO L130 BoogieDeclarations]: Found specification of procedure main [2023-04-02 15:47:15,567 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2023-04-02 15:47:15,567 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-04-02 15:47:15,567 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-04-02 15:47:15,568 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-04-02 15:47:15,568 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-04-02 15:47:15,568 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-04-02 15:47:15,681 INFO L236 CfgBuilder]: Building ICFG [2023-04-02 15:47:15,682 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-04-02 15:47:15,754 WARN L818 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2023-04-02 15:47:16,039 INFO L771 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##103: assume !false; [2023-04-02 15:47:16,039 INFO L771 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##102: assume false; [2023-04-02 15:47:16,044 INFO L277 CfgBuilder]: Performing block encoding [2023-04-02 15:47:16,189 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-04-02 15:47:16,189 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-04-02 15:47:16,191 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.04 03:47:16 BoogieIcfgContainer [2023-04-02 15:47:16,191 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-04-02 15:47:16,193 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-04-02 15:47:16,193 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-04-02 15:47:16,195 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-04-02 15:47:16,195 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.04 03:47:15" (1/3) ... [2023-04-02 15:47:16,196 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3eab25f6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.04 03:47:16, skipping insertion in model container [2023-04-02 15:47:16,196 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 03:47:15" (2/3) ... [2023-04-02 15:47:16,196 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3eab25f6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.04 03:47:16, skipping insertion in model container [2023-04-02 15:47:16,196 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.04 03:47:16" (3/3) ... [2023-04-02 15:47:16,197 INFO L112 eAbstractionObserver]: Analyzing ICFG s3_srvr_1a.BV.c.cil.c [2023-04-02 15:47:16,208 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-04-02 15:47:16,208 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-04-02 15:47:16,252 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-04-02 15:47:16,256 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;@402f1461, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-04-02 15:47:16,256 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-04-02 15:47:16,260 INFO L276 IsEmpty]: Start isEmpty. Operand has 117 states, 109 states have (on average 1.7339449541284404) internal successors, (189), 110 states have internal predecessors, (189), 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) [2023-04-02 15:47:16,267 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2023-04-02 15:47:16,267 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 15:47:16,268 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] [2023-04-02 15:47:16,269 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 15:47:16,273 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 15:47:16,273 INFO L85 PathProgramCache]: Analyzing trace with hash 448457442, now seen corresponding path program 1 times [2023-04-02 15:47:16,278 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-02 15:47:16,279 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1228854599] [2023-04-02 15:47:16,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 15:47:16,279 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 15:47:16,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 15:47:16,539 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 15:47:16,540 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-02 15:47:16,540 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1228854599] [2023-04-02 15:47:16,540 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1228854599] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 15:47:16,540 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 15:47:16,541 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-04-02 15:47:16,541 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [784846177] [2023-04-02 15:47:16,542 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 15:47:16,544 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-04-02 15:47:16,545 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-02 15:47:16,576 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-04-02 15:47:16,577 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-04-02 15:47:16,579 INFO L87 Difference]: Start difference. First operand has 117 states, 109 states have (on average 1.7339449541284404) internal successors, (189), 110 states have internal predecessors, (189), 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) [2023-04-02 15:47:16,704 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 15:47:16,704 INFO L93 Difference]: Finished difference Result 228 states and 382 transitions. [2023-04-02 15:47:16,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-04-02 15:47:16,707 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 [2023-04-02 15:47:16,709 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 15:47:16,718 INFO L225 Difference]: With dead ends: 228 [2023-04-02 15:47:16,718 INFO L226 Difference]: Without dead ends: 209 [2023-04-02 15:47:16,720 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 [2023-04-02 15:47:16,724 INFO L413 NwaCegarLoop]: 164 mSDtfsCounter, 137 mSDsluCounter, 160 mSDsCounter, 0 mSdLazyCounter, 59 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 137 SdHoareTripleChecker+Valid, 324 SdHoareTripleChecker+Invalid, 65 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 59 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-04-02 15:47:16,724 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [137 Valid, 324 Invalid, 65 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 59 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-04-02 15:47:16,736 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 209 states. [2023-04-02 15:47:16,762 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 209 to 208. [2023-04-02 15:47:16,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 208 states, 203 states have (on average 1.522167487684729) internal successors, (309), 203 states have internal predecessors, (309), 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) [2023-04-02 15:47:16,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 208 states to 208 states and 313 transitions. [2023-04-02 15:47:16,766 INFO L78 Accepts]: Start accepts. Automaton has 208 states and 313 transitions. Word has length 45 [2023-04-02 15:47:16,766 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 15:47:16,767 INFO L495 AbstractCegarLoop]: Abstraction has 208 states and 313 transitions. [2023-04-02 15:47:16,767 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) [2023-04-02 15:47:16,767 INFO L276 IsEmpty]: Start isEmpty. Operand 208 states and 313 transitions. [2023-04-02 15:47:16,769 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2023-04-02 15:47:16,769 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 15:47:16,769 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] [2023-04-02 15:47:16,769 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-04-02 15:47:16,769 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 15:47:16,769 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 15:47:16,770 INFO L85 PathProgramCache]: Analyzing trace with hash -1405884064, now seen corresponding path program 1 times [2023-04-02 15:47:16,770 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-02 15:47:16,770 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1737366823] [2023-04-02 15:47:16,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 15:47:16,770 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 15:47:16,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 15:47:16,818 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 15:47:16,818 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-02 15:47:16,818 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1737366823] [2023-04-02 15:47:16,818 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1737366823] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 15:47:16,819 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 15:47:16,819 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-04-02 15:47:16,819 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1866016743] [2023-04-02 15:47:16,819 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 15:47:16,820 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-04-02 15:47:16,820 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-02 15:47:16,820 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-04-02 15:47:16,820 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-04-02 15:47:16,820 INFO L87 Difference]: Start difference. First operand 208 states and 313 transitions. Second operand has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 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) [2023-04-02 15:47:16,926 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 15:47:16,926 INFO L93 Difference]: Finished difference Result 333 states and 506 transitions. [2023-04-02 15:47:16,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-04-02 15:47:16,927 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 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 [2023-04-02 15:47:16,927 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 15:47:16,928 INFO L225 Difference]: With dead ends: 333 [2023-04-02 15:47:16,928 INFO L226 Difference]: Without dead ends: 231 [2023-04-02 15:47:16,929 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 [2023-04-02 15:47:16,930 INFO L413 NwaCegarLoop]: 148 mSDtfsCounter, 7 mSDsluCounter, 58 mSDsCounter, 0 mSdLazyCounter, 140 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 206 SdHoareTripleChecker+Invalid, 153 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 140 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-04-02 15:47:16,930 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 206 Invalid, 153 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 140 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-04-02 15:47:16,931 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 231 states. [2023-04-02 15:47:16,939 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 231 to 227. [2023-04-02 15:47:16,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 227 states, 222 states have (on average 1.490990990990991) internal successors, (331), 222 states have internal predecessors, (331), 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) [2023-04-02 15:47:16,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 227 states to 227 states and 335 transitions. [2023-04-02 15:47:16,941 INFO L78 Accepts]: Start accepts. Automaton has 227 states and 335 transitions. Word has length 59 [2023-04-02 15:47:16,941 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 15:47:16,942 INFO L495 AbstractCegarLoop]: Abstraction has 227 states and 335 transitions. [2023-04-02 15:47:16,942 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 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) [2023-04-02 15:47:16,942 INFO L276 IsEmpty]: Start isEmpty. Operand 227 states and 335 transitions. [2023-04-02 15:47:16,944 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2023-04-02 15:47:16,944 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 15:47:16,944 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] [2023-04-02 15:47:16,944 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-04-02 15:47:16,944 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 15:47:16,944 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 15:47:16,945 INFO L85 PathProgramCache]: Analyzing trace with hash 963527437, now seen corresponding path program 1 times [2023-04-02 15:47:16,945 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-02 15:47:16,945 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [69547724] [2023-04-02 15:47:16,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 15:47:16,945 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 15:47:16,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 15:47:17,046 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-04-02 15:47:17,046 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-02 15:47:17,046 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [69547724] [2023-04-02 15:47:17,046 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [69547724] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 15:47:17,046 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 15:47:17,046 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-04-02 15:47:17,047 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1396723491] [2023-04-02 15:47:17,047 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 15:47:17,047 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-04-02 15:47:17,047 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-02 15:47:17,048 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-04-02 15:47:17,048 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-04-02 15:47:17,048 INFO L87 Difference]: Start difference. First operand 227 states and 335 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) [2023-04-02 15:47:17,219 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 15:47:17,219 INFO L93 Difference]: Finished difference Result 536 states and 822 transitions. [2023-04-02 15:47:17,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-04-02 15:47:17,220 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 [2023-04-02 15:47:17,220 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 15:47:17,221 INFO L225 Difference]: With dead ends: 536 [2023-04-02 15:47:17,221 INFO L226 Difference]: Without dead ends: 317 [2023-04-02 15:47:17,222 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 [2023-04-02 15:47:17,223 INFO L413 NwaCegarLoop]: 148 mSDtfsCounter, 12 mSDsluCounter, 124 mSDsCounter, 0 mSdLazyCounter, 279 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 272 SdHoareTripleChecker+Invalid, 311 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 279 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-04-02 15:47:17,223 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 272 Invalid, 311 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 279 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-04-02 15:47:17,224 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 317 states. [2023-04-02 15:47:17,232 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 317 to 303. [2023-04-02 15:47:17,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 303 states, 298 states have (on average 1.3926174496644295) internal successors, (415), 298 states have internal predecessors, (415), 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) [2023-04-02 15:47:17,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 303 states to 303 states and 419 transitions. [2023-04-02 15:47:17,234 INFO L78 Accepts]: Start accepts. Automaton has 303 states and 419 transitions. Word has length 76 [2023-04-02 15:47:17,234 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 15:47:17,235 INFO L495 AbstractCegarLoop]: Abstraction has 303 states and 419 transitions. [2023-04-02 15:47:17,235 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) [2023-04-02 15:47:17,235 INFO L276 IsEmpty]: Start isEmpty. Operand 303 states and 419 transitions. [2023-04-02 15:47:17,237 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2023-04-02 15:47:17,237 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 15:47:17,237 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, 1] [2023-04-02 15:47:17,238 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-04-02 15:47:17,238 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 15:47:17,238 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 15:47:17,238 INFO L85 PathProgramCache]: Analyzing trace with hash 1182149520, now seen corresponding path program 1 times [2023-04-02 15:47:17,238 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-02 15:47:17,238 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [50955398] [2023-04-02 15:47:17,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 15:47:17,239 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 15:47:17,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 15:47:17,310 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 42 proven. 0 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2023-04-02 15:47:17,310 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-02 15:47:17,310 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [50955398] [2023-04-02 15:47:17,310 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [50955398] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 15:47:17,310 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 15:47:17,311 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-04-02 15:47:17,311 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2096995460] [2023-04-02 15:47:17,311 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 15:47:17,311 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-04-02 15:47:17,311 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-02 15:47:17,312 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-04-02 15:47:17,312 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-04-02 15:47:17,312 INFO L87 Difference]: Start difference. First operand 303 states and 419 transitions. Second operand has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 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) [2023-04-02 15:47:17,426 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 15:47:17,426 INFO L93 Difference]: Finished difference Result 664 states and 946 transitions. [2023-04-02 15:47:17,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-04-02 15:47:17,427 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 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 96 [2023-04-02 15:47:17,427 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 15:47:17,428 INFO L225 Difference]: With dead ends: 664 [2023-04-02 15:47:17,428 INFO L226 Difference]: Without dead ends: 369 [2023-04-02 15:47:17,429 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 [2023-04-02 15:47:17,430 INFO L413 NwaCegarLoop]: 148 mSDtfsCounter, 21 mSDsluCounter, 58 mSDsCounter, 0 mSdLazyCounter, 144 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 206 SdHoareTripleChecker+Invalid, 161 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 144 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-04-02 15:47:17,430 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 206 Invalid, 161 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 144 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-04-02 15:47:17,431 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 369 states. [2023-04-02 15:47:17,437 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 369 to 349. [2023-04-02 15:47:17,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 349 states, 344 states have (on average 1.3575581395348837) internal successors, (467), 344 states have internal predecessors, (467), 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) [2023-04-02 15:47:17,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 349 states to 349 states and 471 transitions. [2023-04-02 15:47:17,439 INFO L78 Accepts]: Start accepts. Automaton has 349 states and 471 transitions. Word has length 96 [2023-04-02 15:47:17,439 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 15:47:17,439 INFO L495 AbstractCegarLoop]: Abstraction has 349 states and 471 transitions. [2023-04-02 15:47:17,439 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 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) [2023-04-02 15:47:17,439 INFO L276 IsEmpty]: Start isEmpty. Operand 349 states and 471 transitions. [2023-04-02 15:47:17,441 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2023-04-02 15:47:17,441 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 15:47:17,442 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] [2023-04-02 15:47:17,442 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-04-02 15:47:17,442 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 15:47:17,442 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 15:47:17,442 INFO L85 PathProgramCache]: Analyzing trace with hash -246120579, now seen corresponding path program 1 times [2023-04-02 15:47:17,442 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-02 15:47:17,442 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1810622243] [2023-04-02 15:47:17,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 15:47:17,443 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 15:47:17,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 15:47:17,618 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 0 proven. 94 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 15:47:17,618 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-02 15:47:17,618 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1810622243] [2023-04-02 15:47:17,619 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1810622243] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-02 15:47:17,619 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [242706379] [2023-04-02 15:47:17,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 15:47:17,620 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 15:47:17,620 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 15:47:17,649 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) [2023-04-02 15:47:17,674 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-04-02 15:47:17,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 15:47:17,740 INFO L262 TraceCheckSpWp]: Trace formula consists of 246 conjuncts, 6 conjunts are in the unsatisfiable core [2023-04-02 15:47:17,744 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-02 15:47:17,902 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 0 proven. 94 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 15:47:17,902 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-02 15:47:18,052 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 94 trivial. 0 not checked. [2023-04-02 15:47:18,052 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [242706379] provided 1 perfect and 1 imperfect interpolant sequences [2023-04-02 15:47:18,052 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-04-02 15:47:18,052 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6, 6] total 7 [2023-04-02 15:47:18,052 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [696737453] [2023-04-02 15:47:18,053 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 15:47:18,053 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-04-02 15:47:18,053 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-02 15:47:18,053 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-04-02 15:47:18,053 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-04-02 15:47:18,054 INFO L87 Difference]: Start difference. First operand 349 states and 471 transitions. Second operand has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 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) [2023-04-02 15:47:18,132 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 15:47:18,133 INFO L93 Difference]: Finished difference Result 688 states and 932 transitions. [2023-04-02 15:47:18,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-04-02 15:47:18,133 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 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 [2023-04-02 15:47:18,133 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 15:47:18,135 INFO L225 Difference]: With dead ends: 688 [2023-04-02 15:47:18,135 INFO L226 Difference]: Without dead ends: 686 [2023-04-02 15:47:18,136 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 233 GetRequests, 228 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-04-02 15:47:18,136 INFO L413 NwaCegarLoop]: 138 mSDtfsCounter, 102 mSDsluCounter, 135 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 102 SdHoareTripleChecker+Valid, 273 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-04-02 15:47:18,136 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [102 Valid, 273 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-04-02 15:47:18,137 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 686 states. [2023-04-02 15:47:18,148 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 686 to 684. [2023-04-02 15:47:18,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 684 states, 679 states have (on average 1.3593519882179677) internal successors, (923), 679 states have internal predecessors, (923), 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) [2023-04-02 15:47:18,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 684 states to 684 states and 927 transitions. [2023-04-02 15:47:18,151 INFO L78 Accepts]: Start accepts. Automaton has 684 states and 927 transitions. Word has length 114 [2023-04-02 15:47:18,151 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 15:47:18,151 INFO L495 AbstractCegarLoop]: Abstraction has 684 states and 927 transitions. [2023-04-02 15:47:18,151 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 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) [2023-04-02 15:47:18,151 INFO L276 IsEmpty]: Start isEmpty. Operand 684 states and 927 transitions. [2023-04-02 15:47:18,153 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2023-04-02 15:47:18,153 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 15:47:18,153 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2023-04-02 15:47:18,165 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-04-02 15:47:18,358 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 15:47:18,358 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 15:47:18,359 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 15:47:18,359 INFO L85 PathProgramCache]: Analyzing trace with hash -193628997, now seen corresponding path program 1 times [2023-04-02 15:47:18,360 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-02 15:47:18,360 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1721167597] [2023-04-02 15:47:18,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 15:47:18,360 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 15:47:18,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 15:47:18,474 INFO L134 CoverageAnalysis]: Checked inductivity of 183 backedges. 119 proven. 0 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2023-04-02 15:47:18,474 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-02 15:47:18,475 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1721167597] [2023-04-02 15:47:18,475 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1721167597] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 15:47:18,475 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 15:47:18,476 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-04-02 15:47:18,476 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1729057617] [2023-04-02 15:47:18,476 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 15:47:18,477 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-04-02 15:47:18,477 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-02 15:47:18,477 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-04-02 15:47:18,478 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-04-02 15:47:18,478 INFO L87 Difference]: Start difference. First operand 684 states and 927 transitions. Second operand has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 states have internal predecessors, (97), 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) [2023-04-02 15:47:18,633 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 15:47:18,633 INFO L93 Difference]: Finished difference Result 1556 states and 2194 transitions. [2023-04-02 15:47:18,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-04-02 15:47:18,633 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 states have internal predecessors, (97), 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 148 [2023-04-02 15:47:18,634 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 15:47:18,636 INFO L225 Difference]: With dead ends: 1556 [2023-04-02 15:47:18,636 INFO L226 Difference]: Without dead ends: 880 [2023-04-02 15:47:18,639 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 [2023-04-02 15:47:18,641 INFO L413 NwaCegarLoop]: 146 mSDtfsCounter, 48 mSDsluCounter, 50 mSDsCounter, 0 mSdLazyCounter, 161 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 196 SdHoareTripleChecker+Invalid, 197 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 161 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-04-02 15:47:18,642 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [48 Valid, 196 Invalid, 197 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 161 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-04-02 15:47:18,643 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 880 states. [2023-04-02 15:47:18,659 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 880 to 832. [2023-04-02 15:47:18,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 832 states, 827 states have (on average 1.324062877871826) internal successors, (1095), 827 states have internal predecessors, (1095), 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) [2023-04-02 15:47:18,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 832 states to 832 states and 1099 transitions. [2023-04-02 15:47:18,663 INFO L78 Accepts]: Start accepts. Automaton has 832 states and 1099 transitions. Word has length 148 [2023-04-02 15:47:18,664 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 15:47:18,664 INFO L495 AbstractCegarLoop]: Abstraction has 832 states and 1099 transitions. [2023-04-02 15:47:18,665 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 states have internal predecessors, (97), 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) [2023-04-02 15:47:18,665 INFO L276 IsEmpty]: Start isEmpty. Operand 832 states and 1099 transitions. [2023-04-02 15:47:18,668 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2023-04-02 15:47:18,668 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 15:47:18,668 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 4, 4, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 15:47:18,668 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-04-02 15:47:18,669 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 15:47:18,669 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 15:47:18,669 INFO L85 PathProgramCache]: Analyzing trace with hash 1976563239, now seen corresponding path program 1 times [2023-04-02 15:47:18,669 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-02 15:47:18,669 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [377480787] [2023-04-02 15:47:18,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 15:47:18,669 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 15:47:18,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 15:47:18,719 INFO L134 CoverageAnalysis]: Checked inductivity of 231 backedges. 143 proven. 0 refuted. 0 times theorem prover too weak. 88 trivial. 0 not checked. [2023-04-02 15:47:18,719 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-02 15:47:18,719 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [377480787] [2023-04-02 15:47:18,720 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [377480787] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 15:47:18,720 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 15:47:18,720 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-04-02 15:47:18,720 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1976358123] [2023-04-02 15:47:18,722 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 15:47:18,722 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-04-02 15:47:18,722 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-02 15:47:18,722 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-04-02 15:47:18,723 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-04-02 15:47:18,723 INFO L87 Difference]: Start difference. First operand 832 states and 1099 transitions. Second operand has 3 states, 3 states have (on average 33.666666666666664) internal successors, (101), 3 states have internal predecessors, (101), 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) [2023-04-02 15:47:18,852 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 15:47:18,852 INFO L93 Difference]: Finished difference Result 1788 states and 2426 transitions. [2023-04-02 15:47:18,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-04-02 15:47:18,853 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.666666666666664) internal successors, (101), 3 states have internal predecessors, (101), 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 154 [2023-04-02 15:47:18,853 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 15:47:18,855 INFO L225 Difference]: With dead ends: 1788 [2023-04-02 15:47:18,855 INFO L226 Difference]: Without dead ends: 964 [2023-04-02 15:47:18,858 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 [2023-04-02 15:47:18,859 INFO L413 NwaCegarLoop]: 148 mSDtfsCounter, 15 mSDsluCounter, 58 mSDsCounter, 0 mSdLazyCounter, 146 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 206 SdHoareTripleChecker+Invalid, 165 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 146 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-04-02 15:47:18,859 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 206 Invalid, 165 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 146 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-04-02 15:47:18,860 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 964 states. [2023-04-02 15:47:18,876 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 964 to 932. [2023-04-02 15:47:18,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 932 states, 927 states have (on average 1.3020496224379718) internal successors, (1207), 927 states have internal predecessors, (1207), 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) [2023-04-02 15:47:18,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 932 states to 932 states and 1211 transitions. [2023-04-02 15:47:18,879 INFO L78 Accepts]: Start accepts. Automaton has 932 states and 1211 transitions. Word has length 154 [2023-04-02 15:47:18,880 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 15:47:18,880 INFO L495 AbstractCegarLoop]: Abstraction has 932 states and 1211 transitions. [2023-04-02 15:47:18,880 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.666666666666664) internal successors, (101), 3 states have internal predecessors, (101), 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) [2023-04-02 15:47:18,880 INFO L276 IsEmpty]: Start isEmpty. Operand 932 states and 1211 transitions. [2023-04-02 15:47:18,882 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2023-04-02 15:47:18,882 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 15:47:18,883 INFO L195 NwaCegarLoop]: trace histogram [6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2023-04-02 15:47:18,883 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-04-02 15:47:18,883 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 15:47:18,883 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 15:47:18,883 INFO L85 PathProgramCache]: Analyzing trace with hash 2110758013, now seen corresponding path program 1 times [2023-04-02 15:47:18,883 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-02 15:47:18,883 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [464142974] [2023-04-02 15:47:18,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 15:47:18,884 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 15:47:18,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 15:47:18,964 INFO L134 CoverageAnalysis]: Checked inductivity of 201 backedges. 101 proven. 0 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2023-04-02 15:47:18,967 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-02 15:47:18,967 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [464142974] [2023-04-02 15:47:18,967 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [464142974] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 15:47:18,967 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 15:47:18,967 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-04-02 15:47:18,967 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [10305378] [2023-04-02 15:47:18,967 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 15:47:18,968 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-04-02 15:47:18,968 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-02 15:47:18,968 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-04-02 15:47:18,968 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-04-02 15:47:18,968 INFO L87 Difference]: Start difference. First operand 932 states and 1211 transitions. Second operand has 3 states, 3 states have (on average 32.0) internal successors, (96), 3 states have internal predecessors, (96), 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) [2023-04-02 15:47:19,122 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 15:47:19,123 INFO L93 Difference]: Finished difference Result 2212 states and 2946 transitions. [2023-04-02 15:47:19,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-04-02 15:47:19,123 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.0) internal successors, (96), 3 states have internal predecessors, (96), 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 158 [2023-04-02 15:47:19,123 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 15:47:19,128 INFO L225 Difference]: With dead ends: 2212 [2023-04-02 15:47:19,128 INFO L226 Difference]: Without dead ends: 1276 [2023-04-02 15:47:19,129 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 [2023-04-02 15:47:19,130 INFO L413 NwaCegarLoop]: 147 mSDtfsCounter, 90 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 135 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 90 SdHoareTripleChecker+Valid, 175 SdHoareTripleChecker+Invalid, 187 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 135 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-04-02 15:47:19,131 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [90 Valid, 175 Invalid, 187 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 135 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-04-02 15:47:19,132 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1276 states. [2023-04-02 15:47:19,154 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1276 to 1192. [2023-04-02 15:47:19,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1192 states, 1187 states have (on average 1.3504633529907328) internal successors, (1603), 1187 states have internal predecessors, (1603), 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) [2023-04-02 15:47:19,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1192 states to 1192 states and 1607 transitions. [2023-04-02 15:47:19,158 INFO L78 Accepts]: Start accepts. Automaton has 1192 states and 1607 transitions. Word has length 158 [2023-04-02 15:47:19,158 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 15:47:19,159 INFO L495 AbstractCegarLoop]: Abstraction has 1192 states and 1607 transitions. [2023-04-02 15:47:19,159 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.0) internal successors, (96), 3 states have internal predecessors, (96), 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) [2023-04-02 15:47:19,159 INFO L276 IsEmpty]: Start isEmpty. Operand 1192 states and 1607 transitions. [2023-04-02 15:47:19,161 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2023-04-02 15:47:19,161 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 15:47:19,161 INFO L195 NwaCegarLoop]: trace histogram [7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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] [2023-04-02 15:47:19,161 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-04-02 15:47:19,161 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 15:47:19,162 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 15:47:19,162 INFO L85 PathProgramCache]: Analyzing trace with hash -1136086195, now seen corresponding path program 2 times [2023-04-02 15:47:19,162 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-02 15:47:19,162 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1072438068] [2023-04-02 15:47:19,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 15:47:19,162 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 15:47:19,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 15:47:19,215 INFO L134 CoverageAnalysis]: Checked inductivity of 334 backedges. 204 proven. 0 refuted. 0 times theorem prover too weak. 130 trivial. 0 not checked. [2023-04-02 15:47:19,215 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-02 15:47:19,216 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1072438068] [2023-04-02 15:47:19,216 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1072438068] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 15:47:19,216 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 15:47:19,216 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-04-02 15:47:19,216 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1581460358] [2023-04-02 15:47:19,216 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 15:47:19,216 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-04-02 15:47:19,216 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-02 15:47:19,217 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-04-02 15:47:19,217 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-04-02 15:47:19,217 INFO L87 Difference]: Start difference. First operand 1192 states and 1607 transitions. Second operand has 3 states, 3 states have (on average 35.0) internal successors, (105), 3 states have internal predecessors, (105), 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) [2023-04-02 15:47:19,396 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 15:47:19,396 INFO L93 Difference]: Finished difference Result 2414 states and 3257 transitions. [2023-04-02 15:47:19,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-04-02 15:47:19,396 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.0) internal successors, (105), 3 states have internal predecessors, (105), 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 196 [2023-04-02 15:47:19,397 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 15:47:19,400 INFO L225 Difference]: With dead ends: 2414 [2023-04-02 15:47:19,400 INFO L226 Difference]: Without dead ends: 1226 [2023-04-02 15:47:19,401 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 [2023-04-02 15:47:19,402 INFO L413 NwaCegarLoop]: 147 mSDtfsCounter, 96 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 133 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 96 SdHoareTripleChecker+Valid, 173 SdHoareTripleChecker+Invalid, 186 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 133 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-04-02 15:47:19,402 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [96 Valid, 173 Invalid, 186 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 133 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-04-02 15:47:19,403 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1226 states. [2023-04-02 15:47:19,425 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1226 to 1204. [2023-04-02 15:47:19,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1204 states, 1199 states have (on average 1.3436196830692244) internal successors, (1611), 1199 states have internal predecessors, (1611), 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) [2023-04-02 15:47:19,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1204 states to 1204 states and 1615 transitions. [2023-04-02 15:47:19,429 INFO L78 Accepts]: Start accepts. Automaton has 1204 states and 1615 transitions. Word has length 196 [2023-04-02 15:47:19,429 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 15:47:19,429 INFO L495 AbstractCegarLoop]: Abstraction has 1204 states and 1615 transitions. [2023-04-02 15:47:19,429 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.0) internal successors, (105), 3 states have internal predecessors, (105), 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) [2023-04-02 15:47:19,429 INFO L276 IsEmpty]: Start isEmpty. Operand 1204 states and 1615 transitions. [2023-04-02 15:47:19,431 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 215 [2023-04-02 15:47:19,431 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 15:47:19,431 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 6, 6, 5, 5, 4, 4, 3, 3, 3, 3, 3, 3, 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] [2023-04-02 15:47:19,432 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-04-02 15:47:19,432 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 15:47:19,432 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 15:47:19,432 INFO L85 PathProgramCache]: Analyzing trace with hash -190918317, now seen corresponding path program 1 times [2023-04-02 15:47:19,432 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-02 15:47:19,432 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1555766720] [2023-04-02 15:47:19,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 15:47:19,432 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 15:47:19,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 15:47:19,496 INFO L134 CoverageAnalysis]: Checked inductivity of 482 backedges. 292 proven. 0 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2023-04-02 15:47:19,497 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-02 15:47:19,497 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1555766720] [2023-04-02 15:47:19,497 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1555766720] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 15:47:19,497 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 15:47:19,497 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-04-02 15:47:19,497 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1337153792] [2023-04-02 15:47:19,497 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 15:47:19,497 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-04-02 15:47:19,497 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-02 15:47:19,498 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-04-02 15:47:19,498 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-04-02 15:47:19,498 INFO L87 Difference]: Start difference. First operand 1204 states and 1615 transitions. Second operand has 3 states, 3 states have (on average 37.333333333333336) internal successors, (112), 3 states have internal predecessors, (112), 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) [2023-04-02 15:47:19,612 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 15:47:19,612 INFO L93 Difference]: Finished difference Result 2516 states and 3418 transitions. [2023-04-02 15:47:19,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-04-02 15:47:19,613 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 37.333333333333336) internal successors, (112), 3 states have internal predecessors, (112), 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 214 [2023-04-02 15:47:19,613 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 15:47:19,616 INFO L225 Difference]: With dead ends: 2516 [2023-04-02 15:47:19,616 INFO L226 Difference]: Without dead ends: 1320 [2023-04-02 15:47:19,618 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 [2023-04-02 15:47:19,618 INFO L413 NwaCegarLoop]: 148 mSDtfsCounter, 7 mSDsluCounter, 58 mSDsCounter, 0 mSdLazyCounter, 146 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 206 SdHoareTripleChecker+Invalid, 166 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 146 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-04-02 15:47:19,619 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 206 Invalid, 166 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 146 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-04-02 15:47:19,620 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1320 states. [2023-04-02 15:47:19,642 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1320 to 1312. [2023-04-02 15:47:19,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1312 states, 1307 states have (on average 1.324407039020658) internal successors, (1731), 1307 states have internal predecessors, (1731), 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) [2023-04-02 15:47:19,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1312 states to 1312 states and 1735 transitions. [2023-04-02 15:47:19,646 INFO L78 Accepts]: Start accepts. Automaton has 1312 states and 1735 transitions. Word has length 214 [2023-04-02 15:47:19,647 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 15:47:19,647 INFO L495 AbstractCegarLoop]: Abstraction has 1312 states and 1735 transitions. [2023-04-02 15:47:19,647 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 37.333333333333336) internal successors, (112), 3 states have internal predecessors, (112), 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) [2023-04-02 15:47:19,647 INFO L276 IsEmpty]: Start isEmpty. Operand 1312 states and 1735 transitions. [2023-04-02 15:47:19,649 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 220 [2023-04-02 15:47:19,649 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 15:47:19,649 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 6, 6, 5, 5, 4, 4, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1] [2023-04-02 15:47:19,650 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-04-02 15:47:19,650 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 15:47:19,651 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 15:47:19,653 INFO L85 PathProgramCache]: Analyzing trace with hash -909586638, now seen corresponding path program 1 times [2023-04-02 15:47:19,653 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-02 15:47:19,654 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1652229302] [2023-04-02 15:47:19,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 15:47:19,654 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 15:47:19,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 15:47:19,718 INFO L134 CoverageAnalysis]: Checked inductivity of 482 backedges. 296 proven. 0 refuted. 0 times theorem prover too weak. 186 trivial. 0 not checked. [2023-04-02 15:47:19,718 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-02 15:47:19,718 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1652229302] [2023-04-02 15:47:19,718 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1652229302] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 15:47:19,718 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 15:47:19,718 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-04-02 15:47:19,718 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [465701230] [2023-04-02 15:47:19,718 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 15:47:19,719 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-04-02 15:47:19,719 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-02 15:47:19,719 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-04-02 15:47:19,720 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-04-02 15:47:19,720 INFO L87 Difference]: Start difference. First operand 1312 states and 1735 transitions. Second operand has 3 states, 3 states have (on average 39.666666666666664) internal successors, (119), 3 states have internal predecessors, (119), 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) [2023-04-02 15:47:19,836 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 15:47:19,836 INFO L93 Difference]: Finished difference Result 2732 states and 3666 transitions. [2023-04-02 15:47:19,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-04-02 15:47:19,836 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 39.666666666666664) internal successors, (119), 3 states have internal predecessors, (119), 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 219 [2023-04-02 15:47:19,837 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 15:47:19,840 INFO L225 Difference]: With dead ends: 2732 [2023-04-02 15:47:19,840 INFO L226 Difference]: Without dead ends: 1428 [2023-04-02 15:47:19,841 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 [2023-04-02 15:47:19,842 INFO L413 NwaCegarLoop]: 148 mSDtfsCounter, 9 mSDsluCounter, 55 mSDsCounter, 0 mSdLazyCounter, 147 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 203 SdHoareTripleChecker+Invalid, 170 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 147 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-04-02 15:47:19,842 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 203 Invalid, 170 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 147 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-04-02 15:47:19,843 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1428 states. [2023-04-02 15:47:19,867 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1428 to 1428. [2023-04-02 15:47:19,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1428 states, 1423 states have (on average 1.3063949402670414) internal successors, (1859), 1423 states have internal predecessors, (1859), 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) [2023-04-02 15:47:19,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1428 states to 1428 states and 1863 transitions. [2023-04-02 15:47:19,872 INFO L78 Accepts]: Start accepts. Automaton has 1428 states and 1863 transitions. Word has length 219 [2023-04-02 15:47:19,872 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 15:47:19,872 INFO L495 AbstractCegarLoop]: Abstraction has 1428 states and 1863 transitions. [2023-04-02 15:47:19,872 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 39.666666666666664) internal successors, (119), 3 states have internal predecessors, (119), 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) [2023-04-02 15:47:19,872 INFO L276 IsEmpty]: Start isEmpty. Operand 1428 states and 1863 transitions. [2023-04-02 15:47:19,875 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 247 [2023-04-02 15:47:19,875 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 15:47:19,875 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 7, 7, 6, 6, 5, 5, 4, 4, 4, 4, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 15:47:19,875 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-04-02 15:47:19,875 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 15:47:19,875 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 15:47:19,875 INFO L85 PathProgramCache]: Analyzing trace with hash -1324424350, now seen corresponding path program 1 times [2023-04-02 15:47:19,875 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-02 15:47:19,876 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1344048504] [2023-04-02 15:47:19,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 15:47:19,876 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 15:47:19,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 15:47:19,990 INFO L134 CoverageAnalysis]: Checked inductivity of 639 backedges. 442 proven. 25 refuted. 0 times theorem prover too weak. 172 trivial. 0 not checked. [2023-04-02 15:47:19,991 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-02 15:47:19,991 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1344048504] [2023-04-02 15:47:19,991 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1344048504] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-02 15:47:19,991 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1999829418] [2023-04-02 15:47:19,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 15:47:19,991 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 15:47:19,991 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 15:47:19,992 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) [2023-04-02 15:47:20,010 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-04-02 15:47:20,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 15:47:20,098 INFO L262 TraceCheckSpWp]: Trace formula consists of 426 conjuncts, 3 conjunts are in the unsatisfiable core [2023-04-02 15:47:20,101 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-02 15:47:20,175 INFO L134 CoverageAnalysis]: Checked inductivity of 639 backedges. 442 proven. 25 refuted. 0 times theorem prover too weak. 172 trivial. 0 not checked. [2023-04-02 15:47:20,175 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-02 15:47:20,245 INFO L134 CoverageAnalysis]: Checked inductivity of 639 backedges. 442 proven. 25 refuted. 0 times theorem prover too weak. 172 trivial. 0 not checked. [2023-04-02 15:47:20,246 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1999829418] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-02 15:47:20,246 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2131194547] [2023-04-02 15:47:20,261 INFO L159 IcfgInterpreter]: Started Sifa with 74 locations of interest [2023-04-02 15:47:20,261 INFO L166 IcfgInterpreter]: Building call graph [2023-04-02 15:47:20,265 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-04-02 15:47:20,270 INFO L176 IcfgInterpreter]: Starting interpretation [2023-04-02 15:47:20,270 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-04-02 15:47:20,318 INFO L197 IcfgInterpreter]: Interpreting procedure main with input of size 9 for LOIs [2023-04-02 15:47:20,321 INFO L197 IcfgInterpreter]: Interpreting procedure ssl3_accept with input of size 12 for LOIs