/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_clnt_2.BV.c.cil-1a.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-f954360 [2023-04-02 15:45:23,667 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-04-02 15:45:23,668 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-04-02 15:45:23,700 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-04-02 15:45:23,700 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-04-02 15:45:23,702 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-04-02 15:45:23,704 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-04-02 15:45:23,707 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-04-02 15:45:23,708 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-04-02 15:45:23,712 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-04-02 15:45:23,713 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-04-02 15:45:23,713 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-04-02 15:45:23,713 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-04-02 15:45:23,714 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-04-02 15:45:23,714 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-04-02 15:45:23,715 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-04-02 15:45:23,715 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-04-02 15:45:23,716 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-04-02 15:45:23,717 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-04-02 15:45:23,717 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-04-02 15:45:23,718 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-04-02 15:45:23,720 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-04-02 15:45:23,721 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-04-02 15:45:23,723 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-04-02 15:45:23,732 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-04-02 15:45:23,732 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-04-02 15:45:23,732 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-04-02 15:45:23,733 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-04-02 15:45:23,733 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-04-02 15:45:23,733 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-04-02 15:45:23,734 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-04-02 15:45:23,734 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-04-02 15:45:23,734 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-04-02 15:45:23,735 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-04-02 15:45:23,735 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-04-02 15:45:23,735 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-04-02 15:45:23,736 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-04-02 15:45:23,736 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-04-02 15:45:23,736 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-04-02 15:45:23,736 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-04-02 15:45:23,737 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-04-02 15:45:23,740 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 15:45:23,762 INFO L113 SettingsManager]: Loading preferences was successful [2023-04-02 15:45:23,763 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-04-02 15:45:23,763 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-04-02 15:45:23,763 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-04-02 15:45:23,764 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-04-02 15:45:23,764 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-04-02 15:45:23,764 INFO L138 SettingsManager]: * User list type=DISABLED [2023-04-02 15:45:23,764 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-04-02 15:45:23,764 INFO L138 SettingsManager]: * Explicit value domain=true [2023-04-02 15:45:23,764 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-04-02 15:45:23,765 INFO L138 SettingsManager]: * Octagon Domain=false [2023-04-02 15:45:23,765 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2023-04-02 15:45:23,765 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-04-02 15:45:23,765 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-04-02 15:45:23,765 INFO L138 SettingsManager]: * Interval Domain=false [2023-04-02 15:45:23,765 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-04-02 15:45:23,765 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-04-02 15:45:23,765 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2023-04-02 15:45:23,766 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-04-02 15:45:23,766 INFO L138 SettingsManager]: * sizeof long=4 [2023-04-02 15:45:23,766 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-04-02 15:45:23,766 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-04-02 15:45:23,766 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-04-02 15:45:23,766 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-04-02 15:45:23,766 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-04-02 15:45:23,766 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-04-02 15:45:23,766 INFO L138 SettingsManager]: * sizeof long double=12 [2023-04-02 15:45:23,766 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-04-02 15:45:23,766 INFO L138 SettingsManager]: * Use constant arrays=true [2023-04-02 15:45:23,766 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-04-02 15:45:23,767 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-04-02 15:45:23,767 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-04-02 15:45:23,767 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-02 15:45:23,767 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-04-02 15:45:23,767 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2023-04-02 15:45:23,767 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-04-02 15:45:23,767 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-04-02 15:45:23,767 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-04-02 15:45:23,767 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-04-02 15:45:23,767 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-04-02 15:45:23,768 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-04-02 15:45:23,768 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Abstract Domain -> OctagonDomain [2023-04-02 15:45:23,947 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-04-02 15:45:23,962 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-04-02 15:45:23,963 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-04-02 15:45:23,964 INFO L271 PluginConnector]: Initializing CDTParser... [2023-04-02 15:45:23,965 INFO L275 PluginConnector]: CDTParser initialized [2023-04-02 15:45:23,966 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/bitvector/s3_clnt_2.BV.c.cil-1a.c [2023-04-02 15:45:24,820 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-04-02 15:45:25,043 INFO L351 CDTParser]: Found 1 translation units. [2023-04-02 15:45:25,044 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/bitvector/s3_clnt_2.BV.c.cil-1a.c [2023-04-02 15:45:25,050 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bcf53d0ef/566bd5665e3f4b0eaa1c486d0e7b2818/FLAGb63a5bf37 [2023-04-02 15:45:25,058 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bcf53d0ef/566bd5665e3f4b0eaa1c486d0e7b2818 [2023-04-02 15:45:25,059 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-04-02 15:45:25,060 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2023-04-02 15:45:25,061 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-04-02 15:45:25,061 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-04-02 15:45:25,074 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-04-02 15:45:25,075 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.04 03:45:25" (1/1) ... [2023-04-02 15:45:25,075 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@678522a0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 03:45:25, skipping insertion in model container [2023-04-02 15:45:25,075 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.04 03:45:25" (1/1) ... [2023-04-02 15:45:25,079 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-04-02 15:45:25,107 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-04-02 15:45:25,240 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_clnt_2.BV.c.cil-1a.c[37676,37689] [2023-04-02 15:45:25,245 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-02 15:45:25,251 INFO L203 MainTranslator]: Completed pre-run [2023-04-02 15:45:25,287 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_clnt_2.BV.c.cil-1a.c[37676,37689] [2023-04-02 15:45:25,288 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-02 15:45:25,296 INFO L208 MainTranslator]: Completed translation [2023-04-02 15:45:25,296 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 03:45:25 WrapperNode [2023-04-02 15:45:25,297 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-04-02 15:45:25,297 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-04-02 15:45:25,297 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-04-02 15:45:25,297 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-04-02 15:45:25,304 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 03:45:25" (1/1) ... [2023-04-02 15:45:25,312 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 03:45:25" (1/1) ... [2023-04-02 15:45:25,317 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 03:45:25" (1/1) ... [2023-04-02 15:45:25,317 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 03:45:25" (1/1) ... [2023-04-02 15:45:25,324 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 03:45:25" (1/1) ... [2023-04-02 15:45:25,329 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 03:45:25" (1/1) ... [2023-04-02 15:45:25,330 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 03:45:25" (1/1) ... [2023-04-02 15:45:25,331 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 03:45:25" (1/1) ... [2023-04-02 15:45:25,333 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-04-02 15:45:25,334 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-04-02 15:45:25,334 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-04-02 15:45:25,334 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-04-02 15:45:25,334 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 03:45:25" (1/1) ... [2023-04-02 15:45:25,338 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-02 15:45:25,346 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 15:45:25,385 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 15:45:25,401 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 15:45:25,414 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2023-04-02 15:45:25,414 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-04-02 15:45:25,414 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-04-02 15:45:25,414 INFO L138 BoogieDeclarations]: Found implementation of procedure ssl3_connect [2023-04-02 15:45:25,415 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2023-04-02 15:45:25,415 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2023-04-02 15:45:25,415 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2023-04-02 15:45:25,415 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-04-02 15:45:25,415 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-04-02 15:45:25,415 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2023-04-02 15:45:25,415 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uint [2023-04-02 15:45:25,415 INFO L130 BoogieDeclarations]: Found specification of procedure ssl3_connect [2023-04-02 15:45:25,415 INFO L130 BoogieDeclarations]: Found specification of procedure main [2023-04-02 15:45:25,416 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2023-04-02 15:45:25,416 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-04-02 15:45:25,416 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-04-02 15:45:25,416 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-04-02 15:45:25,416 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-04-02 15:45:25,416 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-04-02 15:45:25,498 INFO L236 CfgBuilder]: Building ICFG [2023-04-02 15:45:25,499 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-04-02 15:45:25,558 WARN L818 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2023-04-02 15:45:25,796 INFO L771 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##85: assume !false; [2023-04-02 15:45:25,796 INFO L771 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##84: assume false; [2023-04-02 15:45:25,798 INFO L277 CfgBuilder]: Performing block encoding [2023-04-02 15:45:26,005 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-04-02 15:45:26,006 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-04-02 15:45:26,007 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.04 03:45:26 BoogieIcfgContainer [2023-04-02 15:45:26,007 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-04-02 15:45:26,009 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-04-02 15:45:26,009 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-04-02 15:45:26,011 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-04-02 15:45:26,011 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.04 03:45:25" (1/3) ... [2023-04-02 15:45:26,011 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@198394e3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.04 03:45:26, skipping insertion in model container [2023-04-02 15:45:26,011 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 03:45:25" (2/3) ... [2023-04-02 15:45:26,011 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@198394e3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.04 03:45:26, skipping insertion in model container [2023-04-02 15:45:26,012 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.04 03:45:26" (3/3) ... [2023-04-02 15:45:26,012 INFO L112 eAbstractionObserver]: Analyzing ICFG s3_clnt_2.BV.c.cil-1a.c [2023-04-02 15:45:26,022 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-04-02 15:45:26,023 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-04-02 15:45:26,056 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-04-02 15:45:26,060 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;@6cdbde9d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-04-02 15:45:26,060 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-04-02 15:45:26,064 INFO L276 IsEmpty]: Start isEmpty. Operand has 94 states, 86 states have (on average 1.7325581395348837) internal successors, (149), 87 states have internal predecessors, (149), 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 15:45:26,069 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2023-04-02 15:45:26,069 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 15:45:26,069 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] [2023-04-02 15:45:26,070 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 15:45:26,072 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 15:45:26,073 INFO L85 PathProgramCache]: Analyzing trace with hash -1074018847, now seen corresponding path program 1 times [2023-04-02 15:45:26,078 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-02 15:45:26,078 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [663408795] [2023-04-02 15:45:26,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 15:45:26,078 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 15:45:26,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 15:45:26,271 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 15:45:26,271 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-02 15:45:26,272 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [663408795] [2023-04-02 15:45:26,272 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [663408795] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 15:45:26,272 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 15:45:26,273 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-04-02 15:45:26,274 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [151992971] [2023-04-02 15:45:26,274 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 15:45:26,277 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-04-02 15:45:26,278 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-02 15:45:26,310 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-04-02 15:45:26,310 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-04-02 15:45:26,312 INFO L87 Difference]: Start difference. First operand has 94 states, 86 states have (on average 1.7325581395348837) internal successors, (149), 87 states have internal predecessors, (149), 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 7.0) internal successors, (21), 3 states have internal predecessors, (21), 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 15:45:26,465 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 15:45:26,465 INFO L93 Difference]: Finished difference Result 183 states and 307 transitions. [2023-04-02 15:45:26,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-04-02 15:45:26,468 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 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 25 [2023-04-02 15:45:26,468 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 15:45:26,474 INFO L225 Difference]: With dead ends: 183 [2023-04-02 15:45:26,474 INFO L226 Difference]: Without dead ends: 89 [2023-04-02 15:45:26,477 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 15:45:26,480 INFO L413 NwaCegarLoop]: 131 mSDtfsCounter, 0 mSDsluCounter, 63 mSDsCounter, 0 mSdLazyCounter, 111 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 194 SdHoareTripleChecker+Invalid, 113 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 111 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-04-02 15:45:26,481 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 194 Invalid, 113 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 111 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-04-02 15:45:26,491 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2023-04-02 15:45:26,512 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 89. [2023-04-02 15:45:26,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 89 states, 84 states have (on average 1.4523809523809523) internal successors, (122), 84 states have internal predecessors, (122), 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 15:45:26,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 126 transitions. [2023-04-02 15:45:26,522 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 126 transitions. Word has length 25 [2023-04-02 15:45:26,522 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 15:45:26,522 INFO L495 AbstractCegarLoop]: Abstraction has 89 states and 126 transitions. [2023-04-02 15:45:26,524 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 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 15:45:26,524 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 126 transitions. [2023-04-02 15:45:26,525 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2023-04-02 15:45:26,525 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 15:45:26,526 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-04-02 15:45:26,526 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-04-02 15:45:26,527 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 15:45:26,528 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 15:45:26,528 INFO L85 PathProgramCache]: Analyzing trace with hash 697651217, now seen corresponding path program 1 times [2023-04-02 15:45:26,528 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-02 15:45:26,528 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1949154967] [2023-04-02 15:45:26,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 15:45:26,528 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 15:45:26,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 15:45:26,608 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 15:45:26,608 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-02 15:45:26,609 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1949154967] [2023-04-02 15:45:26,609 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1949154967] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 15:45:26,609 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 15:45:26,609 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-04-02 15:45:26,609 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2128176770] [2023-04-02 15:45:26,609 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 15:45:26,610 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-04-02 15:45:26,610 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-02 15:45:26,611 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-04-02 15:45:26,611 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-04-02 15:45:26,611 INFO L87 Difference]: Start difference. First operand 89 states and 126 transitions. Second operand has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 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 15:45:26,714 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 15:45:26,714 INFO L93 Difference]: Finished difference Result 184 states and 267 transitions. [2023-04-02 15:45:26,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-04-02 15:45:26,715 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 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 34 [2023-04-02 15:45:26,715 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 15:45:26,716 INFO L225 Difference]: With dead ends: 184 [2023-04-02 15:45:26,716 INFO L226 Difference]: Without dead ends: 104 [2023-04-02 15:45:26,716 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 15:45:26,717 INFO L413 NwaCegarLoop]: 100 mSDtfsCounter, 8 mSDsluCounter, 38 mSDsCounter, 0 mSdLazyCounter, 109 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 138 SdHoareTripleChecker+Invalid, 116 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 109 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-04-02 15:45:26,717 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 138 Invalid, 116 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 109 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-04-02 15:45:26,718 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2023-04-02 15:45:26,722 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 102. [2023-04-02 15:45:26,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 102 states, 97 states have (on average 1.422680412371134) internal successors, (138), 97 states have internal predecessors, (138), 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 15:45:26,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 142 transitions. [2023-04-02 15:45:26,723 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 142 transitions. Word has length 34 [2023-04-02 15:45:26,723 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 15:45:26,723 INFO L495 AbstractCegarLoop]: Abstraction has 102 states and 142 transitions. [2023-04-02 15:45:26,723 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 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 15:45:26,723 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 142 transitions. [2023-04-02 15:45:26,724 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2023-04-02 15:45:26,724 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 15:45:26,724 INFO L195 NwaCegarLoop]: trace histogram [3, 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] [2023-04-02 15:45:26,724 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-04-02 15:45:26,724 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 15:45:26,725 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 15:45:26,725 INFO L85 PathProgramCache]: Analyzing trace with hash 1162016259, now seen corresponding path program 1 times [2023-04-02 15:45:26,725 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-02 15:45:26,725 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [338394484] [2023-04-02 15:45:26,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 15:45:26,725 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 15:45:26,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 15:45:26,760 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-04-02 15:45:26,760 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-02 15:45:26,760 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [338394484] [2023-04-02 15:45:26,760 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [338394484] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 15:45:26,760 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 15:45:26,760 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-04-02 15:45:26,760 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [151390230] [2023-04-02 15:45:26,761 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 15:45:26,761 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-04-02 15:45:26,761 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-02 15:45:26,761 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-04-02 15:45:26,761 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-04-02 15:45:26,762 INFO L87 Difference]: Start difference. First operand 102 states and 142 transitions. Second operand has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 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 15:45:26,843 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 15:45:26,843 INFO L93 Difference]: Finished difference Result 212 states and 303 transitions. [2023-04-02 15:45:26,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-04-02 15:45:26,844 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 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 15:45:26,844 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 15:45:26,845 INFO L225 Difference]: With dead ends: 212 [2023-04-02 15:45:26,845 INFO L226 Difference]: Without dead ends: 119 [2023-04-02 15:45:26,846 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 15:45:26,846 INFO L413 NwaCegarLoop]: 111 mSDtfsCounter, 8 mSDsluCounter, 38 mSDsCounter, 0 mSdLazyCounter, 112 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 149 SdHoareTripleChecker+Invalid, 121 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 112 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-04-02 15:45:26,847 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 149 Invalid, 121 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 112 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-04-02 15:45:26,847 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2023-04-02 15:45:26,851 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 117. [2023-04-02 15:45:26,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 117 states, 112 states have (on average 1.3928571428571428) internal successors, (156), 112 states have internal predecessors, (156), 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 15:45:26,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 160 transitions. [2023-04-02 15:45:26,852 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 160 transitions. Word has length 45 [2023-04-02 15:45:26,852 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 15:45:26,852 INFO L495 AbstractCegarLoop]: Abstraction has 117 states and 160 transitions. [2023-04-02 15:45:26,853 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 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 15:45:26,853 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 160 transitions. [2023-04-02 15:45:26,854 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2023-04-02 15:45:26,854 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 15:45:26,854 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-04-02 15:45:26,854 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-04-02 15:45:26,854 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 15:45:26,854 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 15:45:26,854 INFO L85 PathProgramCache]: Analyzing trace with hash 767119809, now seen corresponding path program 1 times [2023-04-02 15:45:26,855 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-02 15:45:26,855 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1360030515] [2023-04-02 15:45:26,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 15:45:26,855 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 15:45:26,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 15:45:26,955 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 33 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-04-02 15:45:26,956 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-02 15:45:26,956 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1360030515] [2023-04-02 15:45:26,956 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1360030515] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-02 15:45:26,956 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [293148155] [2023-04-02 15:45:26,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 15:45:26,956 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 15:45:26,956 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 15:45:26,959 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 15:45:26,965 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 15:45:27,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 15:45:27,100 INFO L262 TraceCheckSpWp]: Trace formula consists of 194 conjuncts, 3 conjunts are in the unsatisfiable core [2023-04-02 15:45:27,104 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-02 15:45:27,201 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2023-04-02 15:45:27,201 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-04-02 15:45:27,201 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [293148155] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 15:45:27,201 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-04-02 15:45:27,201 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 7 [2023-04-02 15:45:27,201 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [459478288] [2023-04-02 15:45:27,202 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 15:45:27,202 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-04-02 15:45:27,202 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-02 15:45:27,202 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-04-02 15:45:27,202 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-04-02 15:45:27,202 INFO L87 Difference]: Start difference. First operand 117 states and 160 transitions. Second operand has 4 states, 4 states have (on average 11.25) internal successors, (45), 4 states have internal predecessors, (45), 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 15:45:27,310 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 15:45:27,310 INFO L93 Difference]: Finished difference Result 267 states and 387 transitions. [2023-04-02 15:45:27,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-04-02 15:45:27,311 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.25) internal successors, (45), 4 states have internal predecessors, (45), 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 58 [2023-04-02 15:45:27,311 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 15:45:27,312 INFO L225 Difference]: With dead ends: 267 [2023-04-02 15:45:27,312 INFO L226 Difference]: Without dead ends: 159 [2023-04-02 15:45:27,312 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-04-02 15:45:27,313 INFO L413 NwaCegarLoop]: 90 mSDtfsCounter, 46 mSDsluCounter, 48 mSDsCounter, 0 mSdLazyCounter, 148 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 138 SdHoareTripleChecker+Invalid, 180 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 148 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-04-02 15:45:27,313 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [46 Valid, 138 Invalid, 180 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 148 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-04-02 15:45:27,314 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states. [2023-04-02 15:45:27,318 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 154. [2023-04-02 15:45:27,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 154 states, 149 states have (on average 1.3221476510067114) internal successors, (197), 149 states have internal predecessors, (197), 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 15:45:27,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 201 transitions. [2023-04-02 15:45:27,318 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 201 transitions. Word has length 58 [2023-04-02 15:45:27,319 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 15:45:27,319 INFO L495 AbstractCegarLoop]: Abstraction has 154 states and 201 transitions. [2023-04-02 15:45:27,319 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.25) internal successors, (45), 4 states have internal predecessors, (45), 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 15:45:27,319 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 201 transitions. [2023-04-02 15:45:27,319 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2023-04-02 15:45:27,320 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 15:45:27,320 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 4, 4, 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] [2023-04-02 15:45:27,341 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 15:45:27,544 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 15:45:27,544 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 15:45:27,545 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 15:45:27,545 INFO L85 PathProgramCache]: Analyzing trace with hash 2051963385, now seen corresponding path program 1 times [2023-04-02 15:45:27,545 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-02 15:45:27,545 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1540674918] [2023-04-02 15:45:27,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 15:45:27,545 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 15:45:27,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 15:45:27,579 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 35 proven. 0 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2023-04-02 15:45:27,579 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-02 15:45:27,579 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1540674918] [2023-04-02 15:45:27,579 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1540674918] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 15:45:27,579 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 15:45:27,579 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-04-02 15:45:27,580 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1945992921] [2023-04-02 15:45:27,580 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 15:45:27,580 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-04-02 15:45:27,580 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-02 15:45:27,580 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-04-02 15:45:27,580 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-04-02 15:45:27,581 INFO L87 Difference]: Start difference. First operand 154 states and 201 transitions. Second operand has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 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 15:45:27,653 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 15:45:27,653 INFO L93 Difference]: Finished difference Result 320 states and 429 transitions. [2023-04-02 15:45:27,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-04-02 15:45:27,654 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 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 73 [2023-04-02 15:45:27,654 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 15:45:27,655 INFO L225 Difference]: With dead ends: 320 [2023-04-02 15:45:27,655 INFO L226 Difference]: Without dead ends: 175 [2023-04-02 15:45:27,655 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 15:45:27,656 INFO L413 NwaCegarLoop]: 113 mSDtfsCounter, 8 mSDsluCounter, 38 mSDsCounter, 0 mSdLazyCounter, 116 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 151 SdHoareTripleChecker+Invalid, 129 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 116 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-04-02 15:45:27,656 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 151 Invalid, 129 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 116 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-04-02 15:45:27,657 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175 states. [2023-04-02 15:45:27,660 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175 to 173. [2023-04-02 15:45:27,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 173 states, 168 states have (on average 1.3035714285714286) internal successors, (219), 168 states have internal predecessors, (219), 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 15:45:27,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 173 states to 173 states and 223 transitions. [2023-04-02 15:45:27,661 INFO L78 Accepts]: Start accepts. Automaton has 173 states and 223 transitions. Word has length 73 [2023-04-02 15:45:27,661 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 15:45:27,661 INFO L495 AbstractCegarLoop]: Abstraction has 173 states and 223 transitions. [2023-04-02 15:45:27,661 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 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 15:45:27,662 INFO L276 IsEmpty]: Start isEmpty. Operand 173 states and 223 transitions. [2023-04-02 15:45:27,662 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2023-04-02 15:45:27,662 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 15:45:27,662 INFO L195 NwaCegarLoop]: trace histogram [6, 5, 5, 5, 5, 5, 5, 5, 4, 4, 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] [2023-04-02 15:45:27,662 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-04-02 15:45:27,663 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 15:45:27,663 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 15:45:27,663 INFO L85 PathProgramCache]: Analyzing trace with hash -788365649, now seen corresponding path program 1 times [2023-04-02 15:45:27,663 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-02 15:45:27,663 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [484306069] [2023-04-02 15:45:27,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 15:45:27,663 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 15:45:27,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 15:45:27,786 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-04-02 15:45:27,786 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-02 15:45:27,786 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [484306069] [2023-04-02 15:45:27,786 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [484306069] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-02 15:45:27,786 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [595653226] [2023-04-02 15:45:27,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 15:45:27,786 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 15:45:27,787 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 15:45:27,801 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 15:45:27,876 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 15:45:27,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 15:45:27,936 INFO L262 TraceCheckSpWp]: Trace formula consists of 248 conjuncts, 7 conjunts are in the unsatisfiable core [2023-04-02 15:45:27,938 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-02 15:45:28,026 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 77 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2023-04-02 15:45:28,026 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-02 15:45:28,188 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2023-04-02 15:45:28,189 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [595653226] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-02 15:45:28,189 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [700224351] [2023-04-02 15:45:28,201 INFO L159 IcfgInterpreter]: Started Sifa with 42 locations of interest [2023-04-02 15:45:28,201 INFO L166 IcfgInterpreter]: Building call graph [2023-04-02 15:45:28,203 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-04-02 15:45:28,206 INFO L176 IcfgInterpreter]: Starting interpretation [2023-04-02 15:45:28,206 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-04-02 15:45:28,245 INFO L197 IcfgInterpreter]: Interpreting procedure main with input of size 9 for LOIs [2023-04-02 15:45:28,248 INFO L197 IcfgInterpreter]: Interpreting procedure ssl3_connect with input of size 9 for LOIs [2023-04-02 15:47:02,640 WARN L223 SmtUtils]: Spent 5.31s on a formula simplification. DAG size of input: 3873 DAG size of output: 2387 (called from [L 212] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.BasicPredicateFactory.xJunctTerm)