/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_3a.BV.c.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-f954360 [2023-04-01 03:07:49,089 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-04-01 03:07:49,091 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-04-01 03:07:49,124 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-04-01 03:07:49,125 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-04-01 03:07:49,127 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-04-01 03:07:49,131 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-04-01 03:07:49,133 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-04-01 03:07:49,134 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-04-01 03:07:49,139 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-04-01 03:07:49,140 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-04-01 03:07:49,141 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-04-01 03:07:49,141 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-04-01 03:07:49,143 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-04-01 03:07:49,144 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-04-01 03:07:49,146 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-04-01 03:07:49,146 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-04-01 03:07:49,147 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-04-01 03:07:49,148 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-04-01 03:07:49,152 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-04-01 03:07:49,153 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-04-01 03:07:49,154 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-04-01 03:07:49,155 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-04-01 03:07:49,156 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-04-01 03:07:49,162 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-04-01 03:07:49,162 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-04-01 03:07:49,163 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-04-01 03:07:49,164 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-04-01 03:07:49,164 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-04-01 03:07:49,164 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-04-01 03:07:49,165 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-04-01 03:07:49,165 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-04-01 03:07:49,166 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-04-01 03:07:49,167 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-04-01 03:07:49,167 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-04-01 03:07:49,167 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-04-01 03:07:49,168 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-04-01 03:07:49,168 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-04-01 03:07:49,168 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-04-01 03:07:49,168 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-04-01 03:07:49,169 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-04-01 03:07:49,169 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 [2023-04-01 03:07:49,193 INFO L113 SettingsManager]: Loading preferences was successful [2023-04-01 03:07:49,193 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-04-01 03:07:49,194 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-04-01 03:07:49,194 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-04-01 03:07:49,194 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-04-01 03:07:49,195 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-04-01 03:07:49,195 INFO L138 SettingsManager]: * User list type=DISABLED [2023-04-01 03:07:49,195 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-04-01 03:07:49,195 INFO L138 SettingsManager]: * Explicit value domain=true [2023-04-01 03:07:49,195 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-04-01 03:07:49,196 INFO L138 SettingsManager]: * Octagon Domain=false [2023-04-01 03:07:49,196 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2023-04-01 03:07:49,196 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-04-01 03:07:49,196 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-04-01 03:07:49,196 INFO L138 SettingsManager]: * Interval Domain=false [2023-04-01 03:07:49,196 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-04-01 03:07:49,196 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-04-01 03:07:49,196 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2023-04-01 03:07:49,197 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-04-01 03:07:49,197 INFO L138 SettingsManager]: * sizeof long=4 [2023-04-01 03:07:49,197 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-04-01 03:07:49,197 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-04-01 03:07:49,197 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-04-01 03:07:49,198 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-04-01 03:07:49,198 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-04-01 03:07:49,198 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-04-01 03:07:49,198 INFO L138 SettingsManager]: * sizeof long double=12 [2023-04-01 03:07:49,198 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-04-01 03:07:49,198 INFO L138 SettingsManager]: * Use constant arrays=true [2023-04-01 03:07:49,199 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-04-01 03:07:49,199 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-04-01 03:07:49,199 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-04-01 03:07:49,199 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-01 03:07:49,199 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-04-01 03:07:49,199 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2023-04-01 03:07:49,199 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-04-01 03:07:49,199 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-04-01 03:07:49,199 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-04-01 03:07:49,200 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-04-01 03:07:49,200 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-04-01 03:07:49,200 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-04-01 03:07:49,200 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Abstract Domain -> OctagonDomain [2023-04-01 03:07:49,482 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-04-01 03:07:49,501 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-04-01 03:07:49,503 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-04-01 03:07:49,504 INFO L271 PluginConnector]: Initializing CDTParser... [2023-04-01 03:07:49,504 INFO L275 PluginConnector]: CDTParser initialized [2023-04-01 03:07:49,505 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/bitvector/s3_srvr_3a.BV.c.cil.c [2023-04-01 03:07:50,734 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-04-01 03:07:50,874 INFO L351 CDTParser]: Found 1 translation units. [2023-04-01 03:07:50,875 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/bitvector/s3_srvr_3a.BV.c.cil.c [2023-04-01 03:07:50,895 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1c23776f9/9909da3ebdb0440486848e6f2ea4bd0e/FLAGf89da3116 [2023-04-01 03:07:50,909 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1c23776f9/9909da3ebdb0440486848e6f2ea4bd0e [2023-04-01 03:07:50,911 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-04-01 03:07:50,913 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2023-04-01 03:07:50,915 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-04-01 03:07:50,915 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-04-01 03:07:50,918 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-04-01 03:07:50,919 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.04 03:07:50" (1/1) ... [2023-04-01 03:07:50,919 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2be859ec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 03:07:50, skipping insertion in model container [2023-04-01 03:07:50,919 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.04 03:07:50" (1/1) ... [2023-04-01 03:07:50,925 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-04-01 03:07:50,966 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-04-01 03:07:51,090 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_3a.BV.c.cil.c[44494,44507] [2023-04-01 03:07:51,097 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-01 03:07:51,110 INFO L203 MainTranslator]: Completed pre-run [2023-04-01 03:07:51,157 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_3a.BV.c.cil.c[44494,44507] [2023-04-01 03:07:51,160 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-01 03:07:51,171 INFO L208 MainTranslator]: Completed translation [2023-04-01 03:07:51,171 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 03:07:51 WrapperNode [2023-04-01 03:07:51,172 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-04-01 03:07:51,172 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-04-01 03:07:51,172 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-04-01 03:07:51,173 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-04-01 03:07:51,181 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 03:07:51" (1/1) ... [2023-04-01 03:07:51,181 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 03:07:51" (1/1) ... [2023-04-01 03:07:51,189 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 03:07:51" (1/1) ... [2023-04-01 03:07:51,189 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 03:07:51" (1/1) ... [2023-04-01 03:07:51,213 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 03:07:51" (1/1) ... [2023-04-01 03:07:51,224 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 03:07:51" (1/1) ... [2023-04-01 03:07:51,227 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 03:07:51" (1/1) ... [2023-04-01 03:07:51,228 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 03:07:51" (1/1) ... [2023-04-01 03:07:51,231 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-04-01 03:07:51,231 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-04-01 03:07:51,232 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-04-01 03:07:51,232 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-04-01 03:07:51,232 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 03:07:51" (1/1) ... [2023-04-01 03:07:51,242 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-01 03:07:51,254 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 03:07:51,278 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) [2023-04-01 03:07:51,281 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 [2023-04-01 03:07:51,328 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2023-04-01 03:07:51,328 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-04-01 03:07:51,328 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-04-01 03:07:51,328 INFO L138 BoogieDeclarations]: Found implementation of procedure ssl3_accept [2023-04-01 03:07:51,328 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2023-04-01 03:07:51,328 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2023-04-01 03:07:51,328 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2023-04-01 03:07:51,328 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-04-01 03:07:51,328 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-04-01 03:07:51,328 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_long [2023-04-01 03:07:51,328 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2023-04-01 03:07:51,329 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uint [2023-04-01 03:07:51,329 INFO L130 BoogieDeclarations]: Found specification of procedure ssl3_accept [2023-04-01 03:07:51,329 INFO L130 BoogieDeclarations]: Found specification of procedure main [2023-04-01 03:07:51,329 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2023-04-01 03:07:51,329 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-04-01 03:07:51,329 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-04-01 03:07:51,329 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-04-01 03:07:51,329 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-04-01 03:07:51,329 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-04-01 03:07:51,408 INFO L236 CfgBuilder]: Building ICFG [2023-04-01 03:07:51,410 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-04-01 03:07:51,469 WARN L818 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2023-04-01 03:07:51,955 INFO L771 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##103: assume !false; [2023-04-01 03:07:51,955 INFO L771 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##102: assume false; [2023-04-01 03:07:51,965 INFO L277 CfgBuilder]: Performing block encoding [2023-04-01 03:07:52,132 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-04-01 03:07:52,132 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-04-01 03:07:52,134 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.04 03:07:52 BoogieIcfgContainer [2023-04-01 03:07:52,134 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-04-01 03:07:52,136 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-04-01 03:07:52,136 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-04-01 03:07:52,138 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-04-01 03:07:52,139 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.04 03:07:50" (1/3) ... [2023-04-01 03:07:52,139 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@a351834 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.04 03:07:52, skipping insertion in model container [2023-04-01 03:07:52,139 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 03:07:51" (2/3) ... [2023-04-01 03:07:52,139 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@a351834 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.04 03:07:52, skipping insertion in model container [2023-04-01 03:07:52,139 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.04 03:07:52" (3/3) ... [2023-04-01 03:07:52,140 INFO L112 eAbstractionObserver]: Analyzing ICFG s3_srvr_3a.BV.c.cil.c [2023-04-01 03:07:52,155 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-04-01 03:07:52,156 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-04-01 03:07:52,194 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-04-01 03:07:52,200 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;@1505c124, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-04-01 03:07:52,200 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-04-01 03:07:52,204 INFO L276 IsEmpty]: Start isEmpty. Operand has 116 states, 108 states have (on average 1.7407407407407407) internal successors, (188), 109 states have internal predecessors, (188), 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) [2023-04-01 03:07:52,212 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2023-04-01 03:07:52,212 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 03:07:52,213 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] [2023-04-01 03:07:52,214 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 03:07:52,219 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 03:07:52,219 INFO L85 PathProgramCache]: Analyzing trace with hash 1151623420, now seen corresponding path program 1 times [2023-04-01 03:07:52,225 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 03:07:52,225 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [298454061] [2023-04-01 03:07:52,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 03:07:52,226 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 03:07:52,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 03:07:52,551 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 03:07:52,551 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 03:07:52,552 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [298454061] [2023-04-01 03:07:52,553 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [298454061] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 03:07:52,553 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 03:07:52,553 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-04-01 03:07:52,555 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1249740747] [2023-04-01 03:07:52,556 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 03:07:52,558 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-04-01 03:07:52,559 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 03:07:52,599 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-04-01 03:07:52,600 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-04-01 03:07:52,602 INFO L87 Difference]: Start difference. First operand has 116 states, 108 states have (on average 1.7407407407407407) internal successors, (188), 109 states have internal predecessors, (188), 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) [2023-04-01 03:07:52,766 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 03:07:52,766 INFO L93 Difference]: Finished difference Result 313 states and 533 transitions. [2023-04-01 03:07:52,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-04-01 03:07:52,769 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 [2023-04-01 03:07:52,770 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 03:07:52,780 INFO L225 Difference]: With dead ends: 313 [2023-04-01 03:07:52,781 INFO L226 Difference]: Without dead ends: 191 [2023-04-01 03:07:52,785 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 [2023-04-01 03:07:52,789 INFO L413 NwaCegarLoop]: 152 mSDtfsCounter, 124 mSDsluCounter, 149 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 124 SdHoareTripleChecker+Valid, 301 SdHoareTripleChecker+Invalid, 59 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-04-01 03:07:52,790 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [124 Valid, 301 Invalid, 59 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-04-01 03:07:52,807 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 191 states. [2023-04-01 03:07:52,833 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 191 to 190. [2023-04-01 03:07:52,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 190 states, 185 states have (on average 1.491891891891892) internal successors, (276), 185 states have internal predecessors, (276), 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) [2023-04-01 03:07:52,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 190 states to 190 states and 280 transitions. [2023-04-01 03:07:52,853 INFO L78 Accepts]: Start accepts. Automaton has 190 states and 280 transitions. Word has length 45 [2023-04-01 03:07:52,853 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 03:07:52,854 INFO L495 AbstractCegarLoop]: Abstraction has 190 states and 280 transitions. [2023-04-01 03:07:52,854 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) [2023-04-01 03:07:52,854 INFO L276 IsEmpty]: Start isEmpty. Operand 190 states and 280 transitions. [2023-04-01 03:07:52,856 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2023-04-01 03:07:52,856 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 03:07:52,856 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] [2023-04-01 03:07:52,856 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-04-01 03:07:52,857 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 03:07:52,857 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 03:07:52,857 INFO L85 PathProgramCache]: Analyzing trace with hash -1160438614, now seen corresponding path program 1 times [2023-04-01 03:07:52,857 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 03:07:52,857 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1874639624] [2023-04-01 03:07:52,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 03:07:52,858 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 03:07:52,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 03:07:52,944 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 03:07:52,944 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 03:07:52,945 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1874639624] [2023-04-01 03:07:52,945 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1874639624] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 03:07:52,945 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 03:07:52,945 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-04-01 03:07:52,945 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1641677942] [2023-04-01 03:07:52,945 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 03:07:52,947 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-04-01 03:07:52,947 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 03:07:52,948 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-04-01 03:07:52,948 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-04-01 03:07:52,948 INFO L87 Difference]: Start difference. First operand 190 states and 280 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) [2023-04-01 03:07:53,108 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 03:07:53,108 INFO L93 Difference]: Finished difference Result 306 states and 451 transitions. [2023-04-01 03:07:53,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-04-01 03:07:53,109 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 [2023-04-01 03:07:53,109 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 03:07:53,111 INFO L225 Difference]: With dead ends: 306 [2023-04-01 03:07:53,111 INFO L226 Difference]: Without dead ends: 213 [2023-04-01 03:07:53,115 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 [2023-04-01 03:07:53,118 INFO L413 NwaCegarLoop]: 134 mSDtfsCounter, 7 mSDsluCounter, 50 mSDsCounter, 0 mSdLazyCounter, 128 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 184 SdHoareTripleChecker+Invalid, 136 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 128 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-04-01 03:07:53,120 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 184 Invalid, 136 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 128 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-04-01 03:07:53,122 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 213 states. [2023-04-01 03:07:53,135 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 213 to 209. [2023-04-01 03:07:53,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 209 states, 204 states have (on average 1.4607843137254901) internal successors, (298), 204 states have internal predecessors, (298), 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) [2023-04-01 03:07:53,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 209 states to 209 states and 302 transitions. [2023-04-01 03:07:53,141 INFO L78 Accepts]: Start accepts. Automaton has 209 states and 302 transitions. Word has length 59 [2023-04-01 03:07:53,142 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 03:07:53,142 INFO L495 AbstractCegarLoop]: Abstraction has 209 states and 302 transitions. [2023-04-01 03:07:53,142 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) [2023-04-01 03:07:53,142 INFO L276 IsEmpty]: Start isEmpty. Operand 209 states and 302 transitions. [2023-04-01 03:07:53,149 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2023-04-01 03:07:53,149 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 03:07:53,149 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] [2023-04-01 03:07:53,149 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-04-01 03:07:53,149 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 03:07:53,150 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 03:07:53,151 INFO L85 PathProgramCache]: Analyzing trace with hash 1538507777, now seen corresponding path program 1 times [2023-04-01 03:07:53,151 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 03:07:53,151 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [917504068] [2023-04-01 03:07:53,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 03:07:53,151 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 03:07:53,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 03:07:53,282 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-04-01 03:07:53,282 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 03:07:53,282 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [917504068] [2023-04-01 03:07:53,282 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [917504068] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 03:07:53,283 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 03:07:53,283 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-04-01 03:07:53,283 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1102683402] [2023-04-01 03:07:53,283 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 03:07:53,284 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-04-01 03:07:53,284 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 03:07:53,284 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-04-01 03:07:53,284 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-04-01 03:07:53,285 INFO L87 Difference]: Start difference. First operand 209 states and 302 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) [2023-04-01 03:07:53,442 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 03:07:53,442 INFO L93 Difference]: Finished difference Result 500 states and 746 transitions. [2023-04-01 03:07:53,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-04-01 03:07:53,443 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 [2023-04-01 03:07:53,443 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 03:07:53,445 INFO L225 Difference]: With dead ends: 500 [2023-04-01 03:07:53,445 INFO L226 Difference]: Without dead ends: 299 [2023-04-01 03:07:53,450 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 [2023-04-01 03:07:53,453 INFO L413 NwaCegarLoop]: 134 mSDtfsCounter, 14 mSDsluCounter, 61 mSDsCounter, 0 mSdLazyCounter, 166 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 195 SdHoareTripleChecker+Invalid, 194 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 166 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-04-01 03:07:53,453 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 195 Invalid, 194 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 166 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-04-01 03:07:53,454 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 299 states. [2023-04-01 03:07:53,470 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 299 to 285. [2023-04-01 03:07:53,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 285 states, 280 states have (on average 1.3642857142857143) internal successors, (382), 280 states have internal predecessors, (382), 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) [2023-04-01 03:07:53,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 285 states to 285 states and 386 transitions. [2023-04-01 03:07:53,472 INFO L78 Accepts]: Start accepts. Automaton has 285 states and 386 transitions. Word has length 76 [2023-04-01 03:07:53,472 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 03:07:53,472 INFO L495 AbstractCegarLoop]: Abstraction has 285 states and 386 transitions. [2023-04-01 03:07:53,472 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) [2023-04-01 03:07:53,473 INFO L276 IsEmpty]: Start isEmpty. Operand 285 states and 386 transitions. [2023-04-01 03:07:53,473 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2023-04-01 03:07:53,474 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 03:07:53,474 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] [2023-04-01 03:07:53,474 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-04-01 03:07:53,474 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 03:07:53,474 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 03:07:53,474 INFO L85 PathProgramCache]: Analyzing trace with hash 1877361148, now seen corresponding path program 1 times [2023-04-01 03:07:53,474 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 03:07:53,475 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1502457091] [2023-04-01 03:07:53,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 03:07:53,475 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 03:07:53,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 03:07:53,538 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 42 proven. 0 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2023-04-01 03:07:53,538 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 03:07:53,538 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1502457091] [2023-04-01 03:07:53,538 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1502457091] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 03:07:53,538 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 03:07:53,539 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-04-01 03:07:53,539 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [415147730] [2023-04-01 03:07:53,539 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 03:07:53,539 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-04-01 03:07:53,539 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 03:07:53,539 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-04-01 03:07:53,540 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-04-01 03:07:53,540 INFO L87 Difference]: Start difference. First operand 285 states and 386 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) [2023-04-01 03:07:53,650 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 03:07:53,650 INFO L93 Difference]: Finished difference Result 628 states and 870 transitions. [2023-04-01 03:07:53,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-04-01 03:07:53,651 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 [2023-04-01 03:07:53,651 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 03:07:53,652 INFO L225 Difference]: With dead ends: 628 [2023-04-01 03:07:53,652 INFO L226 Difference]: Without dead ends: 351 [2023-04-01 03:07:53,653 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 [2023-04-01 03:07:53,653 INFO L413 NwaCegarLoop]: 134 mSDtfsCounter, 21 mSDsluCounter, 50 mSDsCounter, 0 mSdLazyCounter, 132 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 184 SdHoareTripleChecker+Invalid, 144 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 132 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-04-01 03:07:53,654 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 184 Invalid, 144 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 132 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-04-01 03:07:53,654 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 351 states. [2023-04-01 03:07:53,662 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 351 to 331. [2023-04-01 03:07:53,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 331 states, 326 states have (on average 1.3312883435582823) internal successors, (434), 326 states have internal predecessors, (434), 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) [2023-04-01 03:07:53,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 331 states to 331 states and 438 transitions. [2023-04-01 03:07:53,664 INFO L78 Accepts]: Start accepts. Automaton has 331 states and 438 transitions. Word has length 96 [2023-04-01 03:07:53,664 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 03:07:53,664 INFO L495 AbstractCegarLoop]: Abstraction has 331 states and 438 transitions. [2023-04-01 03:07:53,664 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) [2023-04-01 03:07:53,664 INFO L276 IsEmpty]: Start isEmpty. Operand 331 states and 438 transitions. [2023-04-01 03:07:53,665 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2023-04-01 03:07:53,665 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 03:07:53,665 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] [2023-04-01 03:07:53,666 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-04-01 03:07:53,666 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 03:07:53,666 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 03:07:53,666 INFO L85 PathProgramCache]: Analyzing trace with hash 1400538077, now seen corresponding path program 1 times [2023-04-01 03:07:53,666 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 03:07:53,666 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [365358069] [2023-04-01 03:07:53,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 03:07:53,666 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 03:07:53,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 03:07:53,833 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 0 proven. 94 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 03:07:53,834 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 03:07:53,834 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [365358069] [2023-04-01 03:07:53,834 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [365358069] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 03:07:53,835 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1172540823] [2023-04-01 03:07:53,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 03:07:53,835 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 03:07:53,835 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 03:07:53,855 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) [2023-04-01 03:07:53,881 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-04-01 03:07:53,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 03:07:53,954 INFO L262 TraceCheckSpWp]: Trace formula consists of 256 conjuncts, 6 conjunts are in the unsatisfiable core [2023-04-01 03:07:53,960 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 03:07:54,148 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 0 proven. 94 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 03:07:54,148 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-01 03:07:54,273 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 94 trivial. 0 not checked. [2023-04-01 03:07:54,273 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1172540823] provided 1 perfect and 1 imperfect interpolant sequences [2023-04-01 03:07:54,273 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-04-01 03:07:54,273 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6, 6] total 7 [2023-04-01 03:07:54,273 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [987095805] [2023-04-01 03:07:54,273 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 03:07:54,274 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-04-01 03:07:54,274 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 03:07:54,274 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-04-01 03:07:54,274 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-04-01 03:07:54,275 INFO L87 Difference]: Start difference. First operand 331 states and 438 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) [2023-04-01 03:07:54,325 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 03:07:54,325 INFO L93 Difference]: Finished difference Result 652 states and 866 transitions. [2023-04-01 03:07:54,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-04-01 03:07:54,325 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 [2023-04-01 03:07:54,326 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 03:07:54,328 INFO L225 Difference]: With dead ends: 652 [2023-04-01 03:07:54,328 INFO L226 Difference]: Without dead ends: 650 [2023-04-01 03:07:54,328 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 [2023-04-01 03:07:54,329 INFO L413 NwaCegarLoop]: 125 mSDtfsCounter, 86 mSDsluCounter, 123 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 86 SdHoareTripleChecker+Valid, 248 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-04-01 03:07:54,329 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [86 Valid, 248 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-04-01 03:07:54,330 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 650 states. [2023-04-01 03:07:54,340 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 650 to 648. [2023-04-01 03:07:54,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 648 states, 643 states have (on average 1.3343701399688959) internal successors, (858), 643 states have internal predecessors, (858), 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) [2023-04-01 03:07:54,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 648 states to 648 states and 862 transitions. [2023-04-01 03:07:54,342 INFO L78 Accepts]: Start accepts. Automaton has 648 states and 862 transitions. Word has length 114 [2023-04-01 03:07:54,342 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 03:07:54,342 INFO L495 AbstractCegarLoop]: Abstraction has 648 states and 862 transitions. [2023-04-01 03:07:54,343 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) [2023-04-01 03:07:54,343 INFO L276 IsEmpty]: Start isEmpty. Operand 648 states and 862 transitions. [2023-04-01 03:07:54,344 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2023-04-01 03:07:54,344 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 03:07:54,344 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] [2023-04-01 03:07:54,367 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-04-01 03:07:54,565 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 [2023-04-01 03:07:54,565 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 03:07:54,565 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 03:07:54,566 INFO L85 PathProgramCache]: Analyzing trace with hash -209566573, now seen corresponding path program 1 times [2023-04-01 03:07:54,566 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 03:07:54,566 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1616637616] [2023-04-01 03:07:54,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 03:07:54,566 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 03:07:54,578 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-04-01 03:07:54,578 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1154326091] [2023-04-01 03:07:54,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 03:07:54,578 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 03:07:54,578 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 03:07:54,595 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) [2023-04-01 03:07:54,596 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-04-01 03:07:54,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 03:07:54,687 INFO L262 TraceCheckSpWp]: Trace formula consists of 298 conjuncts, 4 conjunts are in the unsatisfiable core [2023-04-01 03:07:54,689 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 03:07:54,844 INFO L134 CoverageAnalysis]: Checked inductivity of 183 backedges. 127 proven. 39 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2023-04-01 03:07:54,844 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-01 03:07:54,948 INFO L134 CoverageAnalysis]: Checked inductivity of 183 backedges. 139 proven. 27 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2023-04-01 03:07:54,948 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 03:07:54,948 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1616637616] [2023-04-01 03:07:54,948 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-04-01 03:07:54,948 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1154326091] [2023-04-01 03:07:54,949 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1154326091] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-01 03:07:54,949 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1220914382] [2023-04-01 03:07:54,972 INFO L159 IcfgInterpreter]: Started Sifa with 58 locations of interest [2023-04-01 03:07:54,972 INFO L166 IcfgInterpreter]: Building call graph [2023-04-01 03:07:54,976 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-04-01 03:07:54,980 INFO L176 IcfgInterpreter]: Starting interpretation [2023-04-01 03:07:54,980 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-04-01 03:07:55,025 INFO L197 IcfgInterpreter]: Interpreting procedure main with input of size 9 for LOIs [2023-04-01 03:07:55,029 INFO L197 IcfgInterpreter]: Interpreting procedure ssl3_accept with input of size 12 for LOIs [2023-04-01 03:08:05,940 WARN L223 SmtUtils]: Spent 8.86s on a formula simplification. DAG size of input: 4697 DAG size of output: 2528 (called from [L 212] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.BasicPredicateFactory.xJunctTerm) [2023-04-01 03:08:42,223 WARN L223 SmtUtils]: Spent 6.61s on a formula simplification. DAG size of input: 3784 DAG size of output: 2812 (called from [L 212] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.BasicPredicateFactory.xJunctTerm)