/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 EqDomain -i ../sv-benchmarks/c/bitvector/s3_srvr_3a.BV.c.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-f954360 [2023-04-01 09:10:50,043 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-04-01 09:10:50,046 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-04-01 09:10:50,089 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-04-01 09:10:50,089 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-04-01 09:10:50,092 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-04-01 09:10:50,095 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-04-01 09:10:50,097 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-04-01 09:10:50,098 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-04-01 09:10:50,104 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-04-01 09:10:50,106 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-04-01 09:10:50,107 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-04-01 09:10:50,108 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-04-01 09:10:50,110 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-04-01 09:10:50,111 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-04-01 09:10:50,112 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-04-01 09:10:50,113 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-04-01 09:10:50,114 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-04-01 09:10:50,115 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-04-01 09:10:50,121 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-04-01 09:10:50,122 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-04-01 09:10:50,123 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-04-01 09:10:50,124 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-04-01 09:10:50,125 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-04-01 09:10:50,134 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-04-01 09:10:50,135 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-04-01 09:10:50,135 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-04-01 09:10:50,136 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-04-01 09:10:50,136 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-04-01 09:10:50,137 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-04-01 09:10:50,137 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-04-01 09:10:50,137 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-04-01 09:10:50,138 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-04-01 09:10:50,138 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-04-01 09:10:50,139 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-04-01 09:10:50,139 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-04-01 09:10:50,140 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-04-01 09:10:50,140 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-04-01 09:10:50,140 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-04-01 09:10:50,145 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-04-01 09:10:50,147 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-04-01 09:10:50,147 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 09:10:50,170 INFO L113 SettingsManager]: Loading preferences was successful [2023-04-01 09:10:50,170 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-04-01 09:10:50,171 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-04-01 09:10:50,171 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-04-01 09:10:50,172 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-04-01 09:10:50,172 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-04-01 09:10:50,172 INFO L138 SettingsManager]: * User list type=DISABLED [2023-04-01 09:10:50,172 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-04-01 09:10:50,172 INFO L138 SettingsManager]: * Explicit value domain=true [2023-04-01 09:10:50,172 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-04-01 09:10:50,173 INFO L138 SettingsManager]: * Octagon Domain=false [2023-04-01 09:10:50,173 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2023-04-01 09:10:50,173 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-04-01 09:10:50,173 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-04-01 09:10:50,174 INFO L138 SettingsManager]: * Interval Domain=false [2023-04-01 09:10:50,174 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-04-01 09:10:50,174 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-04-01 09:10:50,174 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2023-04-01 09:10:50,174 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-04-01 09:10:50,175 INFO L138 SettingsManager]: * sizeof long=4 [2023-04-01 09:10:50,175 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-04-01 09:10:50,175 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-04-01 09:10:50,175 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-04-01 09:10:50,175 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-04-01 09:10:50,175 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-04-01 09:10:50,175 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-04-01 09:10:50,176 INFO L138 SettingsManager]: * sizeof long double=12 [2023-04-01 09:10:50,176 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-04-01 09:10:50,176 INFO L138 SettingsManager]: * Use constant arrays=true [2023-04-01 09:10:50,176 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-04-01 09:10:50,176 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-04-01 09:10:50,176 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-04-01 09:10:50,176 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-01 09:10:50,177 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-04-01 09:10:50,177 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2023-04-01 09:10:50,177 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-04-01 09:10:50,177 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-04-01 09:10:50,177 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-04-01 09:10:50,177 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-04-01 09:10:50,177 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-04-01 09:10:50,177 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-04-01 09:10:50,178 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Abstract Domain -> EqDomain [2023-04-01 09:10:50,418 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-04-01 09:10:50,438 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-04-01 09:10:50,440 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-04-01 09:10:50,441 INFO L271 PluginConnector]: Initializing CDTParser... [2023-04-01 09:10:50,442 INFO L275 PluginConnector]: CDTParser initialized [2023-04-01 09:10:50,443 INFO L432 ainManager$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 09:10:51,648 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-04-01 09:10:51,834 INFO L351 CDTParser]: Found 1 translation units. [2023-04-01 09:10:51,835 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/bitvector/s3_srvr_3a.BV.c.cil.c [2023-04-01 09:10:51,844 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1db30b744/a9d371f242a04f2faecfb5604ea9f062/FLAG55bc99ee5 [2023-04-01 09:10:51,856 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1db30b744/a9d371f242a04f2faecfb5604ea9f062 [2023-04-01 09:10:51,859 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-04-01 09:10:51,860 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2023-04-01 09:10:51,863 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-04-01 09:10:51,863 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-04-01 09:10:51,866 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-04-01 09:10:51,866 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.04 09:10:51" (1/1) ... [2023-04-01 09:10:51,867 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@73526f60 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 09:10:51, skipping insertion in model container [2023-04-01 09:10:51,868 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.04 09:10:51" (1/1) ... [2023-04-01 09:10:51,874 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-04-01 09:10:51,919 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-04-01 09:10:52,090 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 09:10:52,098 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-01 09:10:52,107 INFO L203 MainTranslator]: Completed pre-run [2023-04-01 09:10:52,160 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 09:10:52,163 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-01 09:10:52,177 INFO L208 MainTranslator]: Completed translation [2023-04-01 09:10:52,177 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 09:10:52 WrapperNode [2023-04-01 09:10:52,177 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-04-01 09:10:52,178 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-04-01 09:10:52,178 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-04-01 09:10:52,178 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-04-01 09:10:52,186 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 09:10:52" (1/1) ... [2023-04-01 09:10:52,186 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 09:10:52" (1/1) ... [2023-04-01 09:10:52,194 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 09:10:52" (1/1) ... [2023-04-01 09:10:52,194 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 09:10:52" (1/1) ... [2023-04-01 09:10:52,207 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 09:10:52" (1/1) ... [2023-04-01 09:10:52,217 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 09:10:52" (1/1) ... [2023-04-01 09:10:52,219 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 09:10:52" (1/1) ... [2023-04-01 09:10:52,221 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 09:10:52" (1/1) ... [2023-04-01 09:10:52,240 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-04-01 09:10:52,241 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-04-01 09:10:52,242 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-04-01 09:10:52,242 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-04-01 09:10:52,243 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 09:10:52" (1/1) ... [2023-04-01 09:10:52,248 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-01 09:10:52,258 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 09:10:52,277 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 09:10:52,286 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 09:10:52,309 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2023-04-01 09:10:52,310 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-04-01 09:10:52,310 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-04-01 09:10:52,310 INFO L138 BoogieDeclarations]: Found implementation of procedure ssl3_accept [2023-04-01 09:10:52,310 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2023-04-01 09:10:52,310 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2023-04-01 09:10:52,310 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2023-04-01 09:10:52,310 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-04-01 09:10:52,310 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-04-01 09:10:52,311 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_long [2023-04-01 09:10:52,311 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2023-04-01 09:10:52,311 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uint [2023-04-01 09:10:52,311 INFO L130 BoogieDeclarations]: Found specification of procedure ssl3_accept [2023-04-01 09:10:52,311 INFO L130 BoogieDeclarations]: Found specification of procedure main [2023-04-01 09:10:52,311 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2023-04-01 09:10:52,311 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-04-01 09:10:52,311 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-04-01 09:10:52,312 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-04-01 09:10:52,312 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-04-01 09:10:52,312 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-04-01 09:10:52,409 INFO L236 CfgBuilder]: Building ICFG [2023-04-01 09:10:52,411 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-04-01 09:10:52,478 WARN L818 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2023-04-01 09:10:52,988 INFO L771 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##103: assume !false; [2023-04-01 09:10:52,988 INFO L771 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##102: assume false; [2023-04-01 09:10:52,997 INFO L277 CfgBuilder]: Performing block encoding [2023-04-01 09:10:53,214 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-04-01 09:10:53,214 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-04-01 09:10:53,218 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.04 09:10:53 BoogieIcfgContainer [2023-04-01 09:10:53,218 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-04-01 09:10:53,221 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-04-01 09:10:53,221 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-04-01 09:10:53,224 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-04-01 09:10:53,224 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.04 09:10:51" (1/3) ... [2023-04-01 09:10:53,224 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@fef3921 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.04 09:10:53, skipping insertion in model container [2023-04-01 09:10:53,225 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 09:10:52" (2/3) ... [2023-04-01 09:10:53,225 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@fef3921 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.04 09:10:53, skipping insertion in model container [2023-04-01 09:10:53,225 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.04 09:10:53" (3/3) ... [2023-04-01 09:10:53,228 INFO L112 eAbstractionObserver]: Analyzing ICFG s3_srvr_3a.BV.c.cil.c [2023-04-01 09:10:53,243 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-04-01 09:10:53,244 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-04-01 09:10:53,289 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-04-01 09:10:53,294 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;@6b66066a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-04-01 09:10:53,295 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-04-01 09:10:53,299 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 09:10:53,309 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2023-04-01 09:10:53,309 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 09:10:53,310 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 09:10:53,311 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 09:10:53,316 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 09:10:53,316 INFO L85 PathProgramCache]: Analyzing trace with hash 1151623420, now seen corresponding path program 1 times [2023-04-01 09:10:53,324 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 09:10:53,324 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [441987652] [2023-04-01 09:10:53,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 09:10:53,325 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 09:10:53,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 09:10:53,710 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 09:10:53,710 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 09:10:53,711 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [441987652] [2023-04-01 09:10:53,712 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [441987652] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 09:10:53,712 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 09:10:53,712 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-04-01 09:10:53,714 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [736431386] [2023-04-01 09:10:53,714 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 09:10:53,718 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-04-01 09:10:53,718 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 09:10:53,760 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-04-01 09:10:53,761 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-04-01 09:10:53,764 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 09:10:53,933 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 09:10:53,933 INFO L93 Difference]: Finished difference Result 313 states and 533 transitions. [2023-04-01 09:10:53,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-04-01 09:10:53,936 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 09:10:53,937 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 09:10:53,948 INFO L225 Difference]: With dead ends: 313 [2023-04-01 09:10:53,948 INFO L226 Difference]: Without dead ends: 191 [2023-04-01 09:10:53,952 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 09:10:53,956 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 09:10:53,957 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 09:10:53,970 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 191 states. [2023-04-01 09:10:53,995 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 191 to 190. [2023-04-01 09:10:53,997 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 09:10:53,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 190 states to 190 states and 280 transitions. [2023-04-01 09:10:53,999 INFO L78 Accepts]: Start accepts. Automaton has 190 states and 280 transitions. Word has length 45 [2023-04-01 09:10:54,000 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 09:10:54,000 INFO L495 AbstractCegarLoop]: Abstraction has 190 states and 280 transitions. [2023-04-01 09:10:54,000 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 09:10:54,000 INFO L276 IsEmpty]: Start isEmpty. Operand 190 states and 280 transitions. [2023-04-01 09:10:54,002 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2023-04-01 09:10:54,002 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 09:10:54,003 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 09:10:54,003 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-04-01 09:10:54,003 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 09:10:54,003 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 09:10:54,004 INFO L85 PathProgramCache]: Analyzing trace with hash -1160438614, now seen corresponding path program 1 times [2023-04-01 09:10:54,004 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 09:10:54,004 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1129609397] [2023-04-01 09:10:54,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 09:10:54,004 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 09:10:54,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 09:10:54,059 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 09:10:54,060 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 09:10:54,060 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1129609397] [2023-04-01 09:10:54,060 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1129609397] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 09:10:54,060 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 09:10:54,060 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-04-01 09:10:54,060 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [323227644] [2023-04-01 09:10:54,061 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 09:10:54,062 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-04-01 09:10:54,062 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 09:10:54,063 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-04-01 09:10:54,063 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-04-01 09:10:54,063 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 09:10:54,187 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 09:10:54,187 INFO L93 Difference]: Finished difference Result 306 states and 451 transitions. [2023-04-01 09:10:54,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-04-01 09:10:54,188 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 09:10:54,188 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 09:10:54,190 INFO L225 Difference]: With dead ends: 306 [2023-04-01 09:10:54,190 INFO L226 Difference]: Without dead ends: 213 [2023-04-01 09:10:54,191 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 09:10:54,192 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 09:10:54,192 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 09:10:54,193 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 213 states. [2023-04-01 09:10:54,206 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 213 to 209. [2023-04-01 09:10:54,207 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 09:10:54,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 209 states to 209 states and 302 transitions. [2023-04-01 09:10:54,209 INFO L78 Accepts]: Start accepts. Automaton has 209 states and 302 transitions. Word has length 59 [2023-04-01 09:10:54,209 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 09:10:54,209 INFO L495 AbstractCegarLoop]: Abstraction has 209 states and 302 transitions. [2023-04-01 09:10:54,209 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 09:10:54,209 INFO L276 IsEmpty]: Start isEmpty. Operand 209 states and 302 transitions. [2023-04-01 09:10:54,212 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2023-04-01 09:10:54,212 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 09:10:54,212 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 09:10:54,212 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-04-01 09:10:54,212 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 09:10:54,213 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 09:10:54,213 INFO L85 PathProgramCache]: Analyzing trace with hash 1538507777, now seen corresponding path program 1 times [2023-04-01 09:10:54,213 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 09:10:54,213 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1709395576] [2023-04-01 09:10:54,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 09:10:54,214 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 09:10:54,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 09:10:54,351 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 09:10:54,351 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 09:10:54,351 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1709395576] [2023-04-01 09:10:54,352 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1709395576] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 09:10:54,353 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 09:10:54,353 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-04-01 09:10:54,353 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [996755934] [2023-04-01 09:10:54,353 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 09:10:54,354 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-04-01 09:10:54,354 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 09:10:54,355 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-04-01 09:10:54,355 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-04-01 09:10:54,356 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 09:10:54,572 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 09:10:54,572 INFO L93 Difference]: Finished difference Result 500 states and 746 transitions. [2023-04-01 09:10:54,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-04-01 09:10:54,573 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 09:10:54,573 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 09:10:54,574 INFO L225 Difference]: With dead ends: 500 [2023-04-01 09:10:54,575 INFO L226 Difference]: Without dead ends: 299 [2023-04-01 09:10:54,576 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 09:10:54,577 INFO L413 NwaCegarLoop]: 134 mSDtfsCounter, 14 mSDsluCounter, 61 mSDsCounter, 0 mSdLazyCounter, 166 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s 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, 0.2s IncrementalHoareTripleChecker+Time [2023-04-01 09:10:54,577 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 195 Invalid, 194 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 166 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-04-01 09:10:54,578 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 299 states. [2023-04-01 09:10:54,589 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 299 to 285. [2023-04-01 09:10:54,589 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 09:10:54,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 285 states to 285 states and 386 transitions. [2023-04-01 09:10:54,591 INFO L78 Accepts]: Start accepts. Automaton has 285 states and 386 transitions. Word has length 76 [2023-04-01 09:10:54,591 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 09:10:54,592 INFO L495 AbstractCegarLoop]: Abstraction has 285 states and 386 transitions. [2023-04-01 09:10:54,592 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 09:10:54,592 INFO L276 IsEmpty]: Start isEmpty. Operand 285 states and 386 transitions. [2023-04-01 09:10:54,595 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2023-04-01 09:10:54,595 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 09:10:54,595 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 09:10:54,595 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-04-01 09:10:54,596 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 09:10:54,596 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 09:10:54,596 INFO L85 PathProgramCache]: Analyzing trace with hash 1877361148, now seen corresponding path program 1 times [2023-04-01 09:10:54,596 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 09:10:54,597 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1850144739] [2023-04-01 09:10:54,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 09:10:54,597 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 09:10:54,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 09:10:54,668 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 09:10:54,668 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 09:10:54,668 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1850144739] [2023-04-01 09:10:54,668 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1850144739] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 09:10:54,668 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 09:10:54,669 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-04-01 09:10:54,669 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1623970354] [2023-04-01 09:10:54,669 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 09:10:54,669 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-04-01 09:10:54,669 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 09:10:54,670 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-04-01 09:10:54,670 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-04-01 09:10:54,670 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 09:10:54,810 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 09:10:54,810 INFO L93 Difference]: Finished difference Result 628 states and 870 transitions. [2023-04-01 09:10:54,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-04-01 09:10:54,811 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 09:10:54,811 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 09:10:54,812 INFO L225 Difference]: With dead ends: 628 [2023-04-01 09:10:54,813 INFO L226 Difference]: Without dead ends: 351 [2023-04-01 09:10:54,813 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 09:10:54,814 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 09:10:54,815 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 09:10:54,816 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 351 states. [2023-04-01 09:10:54,824 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 351 to 331. [2023-04-01 09:10:54,825 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 09:10:54,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 331 states to 331 states and 438 transitions. [2023-04-01 09:10:54,826 INFO L78 Accepts]: Start accepts. Automaton has 331 states and 438 transitions. Word has length 96 [2023-04-01 09:10:54,827 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 09:10:54,827 INFO L495 AbstractCegarLoop]: Abstraction has 331 states and 438 transitions. [2023-04-01 09:10:54,827 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 09:10:54,827 INFO L276 IsEmpty]: Start isEmpty. Operand 331 states and 438 transitions. [2023-04-01 09:10:54,831 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2023-04-01 09:10:54,831 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 09:10:54,831 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 09:10:54,831 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-04-01 09:10:54,831 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 09:10:54,832 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 09:10:54,832 INFO L85 PathProgramCache]: Analyzing trace with hash 1400538077, now seen corresponding path program 1 times [2023-04-01 09:10:54,832 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 09:10:54,832 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [635897217] [2023-04-01 09:10:54,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 09:10:54,833 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 09:10:54,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 09:10:55,041 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 09:10:55,041 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 09:10:55,041 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [635897217] [2023-04-01 09:10:55,042 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [635897217] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 09:10:55,042 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1865255341] [2023-04-01 09:10:55,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 09:10:55,042 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 09:10:55,042 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 09:10:55,049 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 09:10:55,055 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 09:10:55,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 09:10:55,146 INFO L262 TraceCheckSpWp]: Trace formula consists of 256 conjuncts, 6 conjunts are in the unsatisfiable core [2023-04-01 09:10:55,152 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 09:10:55,331 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 09:10:55,331 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-01 09:10:55,526 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 09:10:55,527 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1865255341] provided 1 perfect and 1 imperfect interpolant sequences [2023-04-01 09:10:55,527 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-04-01 09:10:55,529 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6, 6] total 7 [2023-04-01 09:10:55,529 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1230439891] [2023-04-01 09:10:55,534 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 09:10:55,535 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-04-01 09:10:55,535 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 09:10:55,536 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-04-01 09:10:55,537 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-04-01 09:10:55,538 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 09:10:55,601 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 09:10:55,601 INFO L93 Difference]: Finished difference Result 652 states and 866 transitions. [2023-04-01 09:10:55,601 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-04-01 09:10:55,602 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 09:10:55,604 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 09:10:55,608 INFO L225 Difference]: With dead ends: 652 [2023-04-01 09:10:55,609 INFO L226 Difference]: Without dead ends: 650 [2023-04-01 09:10:55,609 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 09:10:55,610 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 09:10:55,611 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 09:10:55,612 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 650 states. [2023-04-01 09:10:55,630 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 650 to 648. [2023-04-01 09:10:55,632 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 09:10:55,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 648 states to 648 states and 862 transitions. [2023-04-01 09:10:55,634 INFO L78 Accepts]: Start accepts. Automaton has 648 states and 862 transitions. Word has length 114 [2023-04-01 09:10:55,635 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 09:10:55,635 INFO L495 AbstractCegarLoop]: Abstraction has 648 states and 862 transitions. [2023-04-01 09:10:55,635 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 09:10:55,635 INFO L276 IsEmpty]: Start isEmpty. Operand 648 states and 862 transitions. [2023-04-01 09:10:55,642 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2023-04-01 09:10:55,643 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 09:10:55,643 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 09:10:55,654 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-04-01 09:10:55,848 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 09:10:55,849 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 09:10:55,849 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 09:10:55,850 INFO L85 PathProgramCache]: Analyzing trace with hash -209566573, now seen corresponding path program 1 times [2023-04-01 09:10:55,850 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 09:10:55,850 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1356283634] [2023-04-01 09:10:55,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 09:10:55,850 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 09:10:55,868 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-04-01 09:10:55,868 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1710473901] [2023-04-01 09:10:55,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 09:10:55,869 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 09:10:55,869 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 09:10:55,870 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 09:10:55,872 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 09:10:55,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 09:10:55,966 INFO L262 TraceCheckSpWp]: Trace formula consists of 298 conjuncts, 4 conjunts are in the unsatisfiable core [2023-04-01 09:10:55,978 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 09:10:56,142 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 09:10:56,142 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-01 09:10:56,228 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 09:10:56,228 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 09:10:56,228 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1356283634] [2023-04-01 09:10:56,228 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-04-01 09:10:56,228 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1710473901] [2023-04-01 09:10:56,229 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1710473901] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-01 09:10:56,229 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1541547030] [2023-04-01 09:10:56,286 INFO L159 IcfgInterpreter]: Started Sifa with 58 locations of interest [2023-04-01 09:10:56,286 INFO L166 IcfgInterpreter]: Building call graph [2023-04-01 09:10:56,290 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-04-01 09:10:56,294 INFO L176 IcfgInterpreter]: Starting interpretation [2023-04-01 09:10:56,295 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-04-01 09:10:56,383 INFO L197 IcfgInterpreter]: Interpreting procedure main with input of size 43 for LOIs [2023-04-01 09:10:56,401 INFO L197 IcfgInterpreter]: Interpreting procedure ssl3_accept with input of size 46 for LOIs [2023-04-01 09:11:00,636 WARN L137 XnfTransformerHelper]: expecting exponential blowup for input size 6 [2023-04-01 09:11:18,743 WARN L137 XnfTransformerHelper]: expecting exponential blowup for input size 9 [2023-04-01 09:11:19,384 WARN L137 XnfTransformerHelper]: expecting exponential blowup for input size 9 [2023-04-01 09:11:20,777 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 7 for LOIs [2023-04-01 09:11:20,783 INFO L180 IcfgInterpreter]: Interpretation finished [2023-04-01 09:11:47,233 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '6680#(and (<= 0 (+ ssl3_accept_~ret~0 2147483648)) (not (= ssl3_accept_~got_new_session~0 3)) (not (= ssl3_accept_~got_new_session~0 12)) (= (select |#length| 3) 12) (= 22 (select |#length| 2)) (= ssl3_accept_~skip~0 0) (= 2 (select |#length| 1)) (<= ssl3_accept_~ret~0 2147483647) (= (select |#valid| 3) 1) (not (= ssl3_accept_~got_new_session~0 8496)) (= ssl3_accept_~state~0 8672) (not (= ssl3_accept_~got_new_session~0 2)) (not (= |#StackHeapBarrier| 0)) (= ssl3_accept_~Time~0 ssl3_accept_~tmp~0) (not (= ssl3_accept_~s__cert~0 0)) (not (= ssl3_accept_~got_new_session~0 22)) (= (select |#valid| 1) 1) (not (= ssl3_accept_~got_new_session~0 48)) (= (select |#valid| 0) 0) (= (select |#valid| 2) 1) (= |#NULL.offset| 0) (not (= 8464 ssl3_accept_~got_new_session~0)) (= (select (select |#memory_int| 1) 0) 48) (= ssl3_accept_~blastFlag~0 4) (= ssl3_accept_~s__state~0 8672) (or (= ssl3_accept_~s__info_callback~0 0) (= ssl3_accept_~cb~0 ssl3_accept_~s__info_callback~0)) (= (select (select |#memory_int| 1) 1) 0) (= 8464 |ssl3_accept_#in~initial_state|) (= 8464 ssl3_accept_~initial_state) (= |#NULL.base| 0) (or (= ssl3_accept_~cb~0 ssl3_accept_~s__info_callback~0) (= ssl3_accept_~cb~0 ssl3_accept_~s__ctx__info_callback~0)))' at error location [2023-04-01 09:11:47,234 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-04-01 09:11:47,234 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-04-01 09:11:47,234 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 6 [2023-04-01 09:11:47,234 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1722127000] [2023-04-01 09:11:47,234 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-04-01 09:11:47,235 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-04-01 09:11:47,235 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 09:11:47,236 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-04-01 09:11:47,237 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1023, Invalid=2637, Unknown=0, NotChecked=0, Total=3660 [2023-04-01 09:11:47,237 INFO L87 Difference]: Start difference. First operand 648 states and 862 transitions. Second operand has 6 states, 6 states have (on average 23.5) internal successors, (141), 6 states have internal predecessors, (141), 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 09:11:47,833 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 09:11:47,833 INFO L93 Difference]: Finished difference Result 1817 states and 2540 transitions. [2023-04-01 09:11:47,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-04-01 09:11:47,834 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 23.5) internal successors, (141), 6 states have internal predecessors, (141), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 148 [2023-04-01 09:11:47,834 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 09:11:47,839 INFO L225 Difference]: With dead ends: 1817 [2023-04-01 09:11:47,840 INFO L226 Difference]: Without dead ends: 1171 [2023-04-01 09:11:47,842 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 447 GetRequests, 386 SyntacticMatches, 0 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1060 ImplicationChecksByTransitivity, 26.5s TimeCoverageRelationStatistics Valid=1033, Invalid=2873, Unknown=0, NotChecked=0, Total=3906 [2023-04-01 09:11:47,843 INFO L413 NwaCegarLoop]: 268 mSDtfsCounter, 262 mSDsluCounter, 276 mSDsCounter, 0 mSdLazyCounter, 932 mSolverCounterSat, 69 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 262 SdHoareTripleChecker+Valid, 544 SdHoareTripleChecker+Invalid, 1001 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 69 IncrementalHoareTripleChecker+Valid, 932 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-04-01 09:11:47,843 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [262 Valid, 544 Invalid, 1001 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [69 Valid, 932 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-04-01 09:11:47,845 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1171 states. [2023-04-01 09:11:47,869 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1171 to 1031. [2023-04-01 09:11:47,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1031 states, 1026 states have (on average 1.354775828460039) internal successors, (1390), 1026 states have internal predecessors, (1390), 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 09:11:47,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1031 states to 1031 states and 1394 transitions. [2023-04-01 09:11:47,875 INFO L78 Accepts]: Start accepts. Automaton has 1031 states and 1394 transitions. Word has length 148 [2023-04-01 09:11:47,875 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 09:11:47,875 INFO L495 AbstractCegarLoop]: Abstraction has 1031 states and 1394 transitions. [2023-04-01 09:11:47,875 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 23.5) internal successors, (141), 6 states have internal predecessors, (141), 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 09:11:47,875 INFO L276 IsEmpty]: Start isEmpty. Operand 1031 states and 1394 transitions. [2023-04-01 09:11:47,878 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 187 [2023-04-01 09:11:47,878 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 09:11:47,879 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 09:11:47,885 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-04-01 09:11:48,084 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2023-04-01 09:11:48,085 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 09:11:48,085 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 09:11:48,085 INFO L85 PathProgramCache]: Analyzing trace with hash 872264835, now seen corresponding path program 2 times [2023-04-01 09:11:48,085 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 09:11:48,086 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [457301047] [2023-04-01 09:11:48,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 09:11:48,086 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 09:11:48,137 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-04-01 09:11:48,137 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [847307827] [2023-04-01 09:11:48,137 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-04-01 09:11:48,137 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 09:11:48,138 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 09:11:48,140 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-01 09:11:48,150 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-04-01 09:11:48,238 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2023-04-01 09:11:48,238 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-04-01 09:11:48,240 INFO L262 TraceCheckSpWp]: Trace formula consists of 295 conjuncts, 2 conjunts are in the unsatisfiable core [2023-04-01 09:11:48,243 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 09:11:48,281 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 243 proven. 0 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2023-04-01 09:11:48,282 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-04-01 09:11:48,282 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 09:11:48,282 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [457301047] [2023-04-01 09:11:48,282 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-04-01 09:11:48,282 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [847307827] [2023-04-01 09:11:48,282 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [847307827] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 09:11:48,282 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 09:11:48,282 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-04-01 09:11:48,283 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1669875193] [2023-04-01 09:11:48,283 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 09:11:48,283 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-04-01 09:11:48,283 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 09:11:48,284 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-04-01 09:11:48,284 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-04-01 09:11:48,285 INFO L87 Difference]: Start difference. First operand 1031 states and 1394 transitions. Second operand has 3 states, 3 states have (on average 42.0) internal successors, (126), 3 states have internal predecessors, (126), 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 09:11:48,454 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 09:11:48,454 INFO L93 Difference]: Finished difference Result 2300 states and 3212 transitions. [2023-04-01 09:11:48,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-04-01 09:11:48,455 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 42.0) internal successors, (126), 3 states have internal predecessors, (126), 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 186 [2023-04-01 09:11:48,455 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 09:11:48,459 INFO L225 Difference]: With dead ends: 2300 [2023-04-01 09:11:48,460 INFO L226 Difference]: Without dead ends: 1277 [2023-04-01 09:11:48,462 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 185 GetRequests, 184 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 09:11:48,462 INFO L413 NwaCegarLoop]: 134 mSDtfsCounter, 15 mSDsluCounter, 45 mSDsCounter, 0 mSdLazyCounter, 150 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 179 SdHoareTripleChecker+Invalid, 179 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 150 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-04-01 09:11:48,463 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 179 Invalid, 179 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 150 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-04-01 09:11:48,464 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1277 states. [2023-04-01 09:11:48,490 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1277 to 1265. [2023-04-01 09:11:48,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1265 states, 1260 states have (on average 1.3031746031746032) internal successors, (1642), 1260 states have internal predecessors, (1642), 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 09:11:48,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1265 states to 1265 states and 1646 transitions. [2023-04-01 09:11:48,497 INFO L78 Accepts]: Start accepts. Automaton has 1265 states and 1646 transitions. Word has length 186 [2023-04-01 09:11:48,497 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 09:11:48,498 INFO L495 AbstractCegarLoop]: Abstraction has 1265 states and 1646 transitions. [2023-04-01 09:11:48,498 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 42.0) internal successors, (126), 3 states have internal predecessors, (126), 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 09:11:48,498 INFO L276 IsEmpty]: Start isEmpty. Operand 1265 states and 1646 transitions. [2023-04-01 09:11:48,501 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2023-04-01 09:11:48,501 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 09:11:48,502 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 5, 5, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 09:11:48,511 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0