/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data --core.log.level.for.class de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN -tc ../../../trunk/examples/toolchains/AutomizerCTransformed.xml -s ../../../trunk/examples/settings/automizer/LoopAccelerationJordanC.epf -i ../../../trunk/examples/svcomp/openssl-simplified/s3_srvr_8.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-34549b5 [2022-04-06 08:37:11,944 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-04-06 08:37:11,946 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-04-06 08:37:11,978 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-04-06 08:37:11,979 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-04-06 08:37:11,980 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-04-06 08:37:11,982 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-04-06 08:37:11,983 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-04-06 08:37:11,986 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-04-06 08:37:11,989 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-04-06 08:37:11,990 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-04-06 08:37:11,991 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-04-06 08:37:11,991 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-04-06 08:37:11,992 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-04-06 08:37:11,993 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-04-06 08:37:11,995 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-04-06 08:37:11,995 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-04-06 08:37:11,996 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-04-06 08:37:11,997 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-04-06 08:37:12,001 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-04-06 08:37:12,002 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-04-06 08:37:12,003 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-04-06 08:37:12,003 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-04-06 08:37:12,004 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-04-06 08:37:12,005 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-04-06 08:37:12,009 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-04-06 08:37:12,009 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-04-06 08:37:12,009 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-04-06 08:37:12,010 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-04-06 08:37:12,010 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-04-06 08:37:12,011 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-04-06 08:37:12,011 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-04-06 08:37:12,012 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-04-06 08:37:12,012 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-04-06 08:37:12,013 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-04-06 08:37:12,013 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-04-06 08:37:12,013 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-04-06 08:37:12,014 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-04-06 08:37:12,014 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-04-06 08:37:12,014 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-04-06 08:37:12,014 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-04-06 08:37:12,016 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-04-06 08:37:12,016 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/LoopAccelerationJordanC.epf [2022-04-06 08:37:12,024 INFO L113 SettingsManager]: Loading preferences was successful [2022-04-06 08:37:12,025 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-04-06 08:37:12,025 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-04-06 08:37:12,025 INFO L138 SettingsManager]: * sizeof long=4 [2022-04-06 08:37:12,026 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-04-06 08:37:12,026 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-04-06 08:37:12,026 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-04-06 08:37:12,026 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-04-06 08:37:12,026 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-04-06 08:37:12,027 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-04-06 08:37:12,027 INFO L138 SettingsManager]: * sizeof long double=12 [2022-04-06 08:37:12,027 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-04-06 08:37:12,027 INFO L138 SettingsManager]: * Use constant arrays=true [2022-04-06 08:37:12,027 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-04-06 08:37:12,027 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-04-06 08:37:12,027 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-04-06 08:37:12,027 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-04-06 08:37:12,027 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-04-06 08:37:12,027 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-04-06 08:37:12,028 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-04-06 08:37:12,028 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-04-06 08:37:12,028 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-04-06 08:37:12,028 INFO L138 SettingsManager]: * TransformationType=LOOP_ACCELERATION_JORDAN 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-04-06 08:37:12,212 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-04-06 08:37:12,230 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-04-06 08:37:12,231 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-04-06 08:37:12,232 INFO L271 PluginConnector]: Initializing CDTParser... [2022-04-06 08:37:12,232 INFO L275 PluginConnector]: CDTParser initialized [2022-04-06 08:37:12,233 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/openssl-simplified/s3_srvr_8.cil.c [2022-04-06 08:37:12,279 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2155e22cb/ed537b10efed4c038bb289bf2168dfda/FLAG90021e73a [2022-04-06 08:37:12,696 INFO L306 CDTParser]: Found 1 translation units. [2022-04-06 08:37:12,697 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/openssl-simplified/s3_srvr_8.cil.c [2022-04-06 08:37:12,703 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2155e22cb/ed537b10efed4c038bb289bf2168dfda/FLAG90021e73a [2022-04-06 08:37:12,719 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2155e22cb/ed537b10efed4c038bb289bf2168dfda [2022-04-06 08:37:12,721 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-04-06 08:37:12,721 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-04-06 08:37:12,724 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-04-06 08:37:12,724 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-04-06 08:37:12,727 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-04-06 08:37:12,727 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.04 08:37:12" (1/1) ... [2022-04-06 08:37:12,728 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@34620e6e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.04 08:37:12, skipping insertion in model container [2022-04-06 08:37:12,728 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.04 08:37:12" (1/1) ... [2022-04-06 08:37:12,732 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-04-06 08:37:12,762 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-04-06 08:37:12,913 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/openssl-simplified/s3_srvr_8.cil.c[44970,44983] [2022-04-06 08:37:12,917 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-04-06 08:37:12,922 INFO L203 MainTranslator]: Completed pre-run [2022-04-06 08:37:12,952 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/openssl-simplified/s3_srvr_8.cil.c[44970,44983] [2022-04-06 08:37:12,972 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-04-06 08:37:12,981 INFO L208 MainTranslator]: Completed translation [2022-04-06 08:37:12,982 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.04 08:37:12 WrapperNode [2022-04-06 08:37:12,982 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-04-06 08:37:12,982 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-04-06 08:37:12,982 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-04-06 08:37:12,983 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-04-06 08:37:12,989 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.04 08:37:12" (1/1) ... [2022-04-06 08:37:12,989 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.04 08:37:12" (1/1) ... [2022-04-06 08:37:12,996 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.04 08:37:12" (1/1) ... [2022-04-06 08:37:12,996 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.04 08:37:12" (1/1) ... [2022-04-06 08:37:13,003 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.04 08:37:12" (1/1) ... [2022-04-06 08:37:13,012 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.04 08:37:12" (1/1) ... [2022-04-06 08:37:13,013 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.04 08:37:12" (1/1) ... [2022-04-06 08:37:13,016 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-04-06 08:37:13,017 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-04-06 08:37:13,017 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-04-06 08:37:13,017 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-04-06 08:37:13,018 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.04 08:37:12" (1/1) ... [2022-04-06 08:37:13,029 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-04-06 08:37:13,036 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-06 08:37:13,073 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) [2022-04-06 08:37:13,074 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 [2022-04-06 08:37:13,105 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2022-04-06 08:37:13,105 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-04-06 08:37:13,105 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2022-04-06 08:37:13,105 INFO L138 BoogieDeclarations]: Found implementation of procedure ssl3_accept [2022-04-06 08:37:13,105 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2022-04-06 08:37:13,105 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2022-04-06 08:37:13,106 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2022-04-06 08:37:13,106 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2022-04-06 08:37:13,106 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-04-06 08:37:13,106 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2022-04-06 08:37:13,106 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2022-04-06 08:37:13,106 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_long [2022-04-06 08:37:13,107 INFO L130 BoogieDeclarations]: Found specification of procedure ssl3_accept [2022-04-06 08:37:13,107 INFO L130 BoogieDeclarations]: Found specification of procedure main [2022-04-06 08:37:13,107 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2022-04-06 08:37:13,107 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-04-06 08:37:13,107 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-04-06 08:37:13,107 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-04-06 08:37:13,107 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-04-06 08:37:13,107 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-04-06 08:37:13,173 INFO L234 CfgBuilder]: Building ICFG [2022-04-06 08:37:13,180 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-04-06 08:37:13,237 WARN L811 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-04-06 08:37:13,508 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##90: assume false; [2022-04-06 08:37:13,508 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##91: assume !false; [2022-04-06 08:37:13,513 INFO L275 CfgBuilder]: Performing block encoding [2022-04-06 08:37:13,521 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-04-06 08:37:13,521 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-04-06 08:37:13,522 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.04 08:37:13 BoogieIcfgContainer [2022-04-06 08:37:13,522 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-04-06 08:37:13,523 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-04-06 08:37:13,523 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-04-06 08:37:13,524 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-04-06 08:37:13,526 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.04 08:37:13" (1/1) ... [2022-04-06 08:37:13,528 INFO L168 ansformationObserver]: Applying ICFG transformation LOOP_ACCELERATION_JORDAN [2022-04-06 08:37:13,564 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 06.04 08:37:13 BasicIcfg [2022-04-06 08:37:13,564 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-04-06 08:37:13,565 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-04-06 08:37:13,565 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-04-06 08:37:13,567 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-04-06 08:37:13,567 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.04 08:37:12" (1/4) ... [2022-04-06 08:37:13,568 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@36b23a3f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.04 08:37:13, skipping insertion in model container [2022-04-06 08:37:13,568 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.04 08:37:12" (2/4) ... [2022-04-06 08:37:13,568 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@36b23a3f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.04 08:37:13, skipping insertion in model container [2022-04-06 08:37:13,568 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.04 08:37:13" (3/4) ... [2022-04-06 08:37:13,568 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@36b23a3f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.04 08:37:13, skipping insertion in model container [2022-04-06 08:37:13,568 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 06.04 08:37:13" (4/4) ... [2022-04-06 08:37:13,569 INFO L111 eAbstractionObserver]: Analyzing ICFG s3_srvr_8.cil.cJordan [2022-04-06 08:37:13,573 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:ForwardPredicates Determinization: PREDICATE_ABSTRACTION [2022-04-06 08:37:13,573 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-04-06 08:37:13,598 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-04-06 08:37:13,602 INFO L340 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=ForwardPredicates, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, 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 [2022-04-06 08:37:13,602 INFO L341 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-04-06 08:37:13,612 INFO L276 IsEmpty]: Start isEmpty. Operand has 156 states, 148 states have (on average 1.722972972972973) internal successors, (255), 149 states have internal predecessors, (255), 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) [2022-04-06 08:37:13,619 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2022-04-06 08:37:13,619 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 08:37:13,620 INFO L499 BasicCegarLoop]: 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, 1, 1, 1] [2022-04-06 08:37:13,620 INFO L403 AbstractCegarLoop]: === Iteration 1 === Targeting ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 08:37:13,624 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 08:37:13,624 INFO L85 PathProgramCache]: Analyzing trace with hash 1186597234, now seen corresponding path program 1 times [2022-04-06 08:37:13,630 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 08:37:13,630 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1864625962] [2022-04-06 08:37:13,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 08:37:13,630 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 08:37:13,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:37:13,809 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 08:37:13,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:37:13,822 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 08:37:13,823 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 08:37:13,823 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1864625962] [2022-04-06 08:37:13,823 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1864625962] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 08:37:13,823 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 08:37:13,824 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-04-06 08:37:13,825 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [938758290] [2022-04-06 08:37:13,825 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 08:37:13,828 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-04-06 08:37:13,828 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-06 08:37:13,850 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-04-06 08:37:13,851 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-04-06 08:37:13,855 INFO L87 Difference]: Start difference. First operand has 156 states, 148 states have (on average 1.722972972972973) internal successors, (255), 149 states have internal predecessors, (255), 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 4 states, 4 states have (on average 11.0) internal successors, (44), 3 states have internal predecessors, (44), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-06 08:37:14,168 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 08:37:14,168 INFO L93 Difference]: Finished difference Result 290 states and 479 transitions. [2022-04-06 08:37:14,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-04-06 08:37:14,170 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.0) internal successors, (44), 3 states have internal predecessors, (44), 1 states have call successors, (3), 2 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 48 [2022-04-06 08:37:14,171 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 08:37:14,180 INFO L225 Difference]: With dead ends: 290 [2022-04-06 08:37:14,181 INFO L226 Difference]: Without dead ends: 263 [2022-04-06 08:37:14,182 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-04-06 08:37:14,185 INFO L913 BasicCegarLoop]: 246 mSDtfsCounter, 660 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 254 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 662 SdHoareTripleChecker+Valid, 255 SdHoareTripleChecker+Invalid, 267 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 254 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-04-06 08:37:14,185 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [662 Valid, 255 Invalid, 267 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 254 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-04-06 08:37:14,197 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 263 states. [2022-04-06 08:37:14,216 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 263 to 263. [2022-04-06 08:37:14,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 263 states, 258 states have (on average 1.5232558139534884) internal successors, (393), 258 states have internal predecessors, (393), 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) [2022-04-06 08:37:14,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 263 states to 263 states and 397 transitions. [2022-04-06 08:37:14,219 INFO L78 Accepts]: Start accepts. Automaton has 263 states and 397 transitions. Word has length 48 [2022-04-06 08:37:14,220 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 08:37:14,220 INFO L478 AbstractCegarLoop]: Abstraction has 263 states and 397 transitions. [2022-04-06 08:37:14,220 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.0) internal successors, (44), 3 states have internal predecessors, (44), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-06 08:37:14,220 INFO L276 IsEmpty]: Start isEmpty. Operand 263 states and 397 transitions. [2022-04-06 08:37:14,222 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2022-04-06 08:37:14,222 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 08:37:14,222 INFO L499 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-06 08:37:14,222 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-04-06 08:37:14,223 INFO L403 AbstractCegarLoop]: === Iteration 2 === Targeting ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 08:37:14,223 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 08:37:14,223 INFO L85 PathProgramCache]: Analyzing trace with hash 784259584, now seen corresponding path program 1 times [2022-04-06 08:37:14,223 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 08:37:14,224 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1334737392] [2022-04-06 08:37:14,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 08:37:14,224 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 08:37:14,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:37:14,284 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 08:37:14,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:37:14,289 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 08:37:14,289 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 08:37:14,289 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1334737392] [2022-04-06 08:37:14,289 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1334737392] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 08:37:14,289 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 08:37:14,290 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-04-06 08:37:14,290 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1428061693] [2022-04-06 08:37:14,290 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 08:37:14,291 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-04-06 08:37:14,291 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-06 08:37:14,291 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-04-06 08:37:14,292 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-04-06 08:37:14,292 INFO L87 Difference]: Start difference. First operand 263 states and 397 transitions. Second operand has 4 states, 4 states have (on average 15.0) internal successors, (60), 3 states have internal predecessors, (60), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-06 08:37:14,489 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 08:37:14,489 INFO L93 Difference]: Finished difference Result 292 states and 434 transitions. [2022-04-06 08:37:14,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-04-06 08:37:14,490 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.0) internal successors, (60), 3 states have internal predecessors, (60), 1 states have call successors, (3), 2 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 64 [2022-04-06 08:37:14,490 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 08:37:14,495 INFO L225 Difference]: With dead ends: 292 [2022-04-06 08:37:14,495 INFO L226 Difference]: Without dead ends: 292 [2022-04-06 08:37:14,498 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-04-06 08:37:14,500 INFO L913 BasicCegarLoop]: 225 mSDtfsCounter, 227 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 223 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 227 SdHoareTripleChecker+Valid, 232 SdHoareTripleChecker+Invalid, 238 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 223 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-04-06 08:37:14,500 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [227 Valid, 232 Invalid, 238 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 223 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-04-06 08:37:14,503 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 292 states. [2022-04-06 08:37:14,523 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 292 to 284. [2022-04-06 08:37:14,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 284 states, 279 states have (on average 1.5017921146953406) internal successors, (419), 279 states have internal predecessors, (419), 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) [2022-04-06 08:37:14,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 284 states to 284 states and 423 transitions. [2022-04-06 08:37:14,524 INFO L78 Accepts]: Start accepts. Automaton has 284 states and 423 transitions. Word has length 64 [2022-04-06 08:37:14,525 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 08:37:14,525 INFO L478 AbstractCegarLoop]: Abstraction has 284 states and 423 transitions. [2022-04-06 08:37:14,525 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.0) internal successors, (60), 3 states have internal predecessors, (60), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-06 08:37:14,525 INFO L276 IsEmpty]: Start isEmpty. Operand 284 states and 423 transitions. [2022-04-06 08:37:14,527 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2022-04-06 08:37:14,527 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 08:37:14,527 INFO L499 BasicCegarLoop]: trace histogram [3, 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, 1, 1, 1, 1, 1, 1] [2022-04-06 08:37:14,527 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-04-06 08:37:14,528 INFO L403 AbstractCegarLoop]: === Iteration 3 === Targeting ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 08:37:14,528 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 08:37:14,528 INFO L85 PathProgramCache]: Analyzing trace with hash 1949677792, now seen corresponding path program 1 times [2022-04-06 08:37:14,528 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 08:37:14,528 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1088088501] [2022-04-06 08:37:14,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 08:37:14,529 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 08:37:14,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:37:14,633 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 08:37:14,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:37:14,639 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-04-06 08:37:14,639 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 08:37:14,639 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1088088501] [2022-04-06 08:37:14,639 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1088088501] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 08:37:14,640 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 08:37:14,640 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-04-06 08:37:14,640 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2050036182] [2022-04-06 08:37:14,640 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 08:37:14,640 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-04-06 08:37:14,641 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-06 08:37:14,641 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-04-06 08:37:14,641 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-04-06 08:37:14,641 INFO L87 Difference]: Start difference. First operand 284 states and 423 transitions. Second operand has 4 states, 4 states have (on average 17.75) internal successors, (71), 3 states have internal predecessors, (71), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-06 08:37:14,849 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 08:37:14,850 INFO L93 Difference]: Finished difference Result 394 states and 561 transitions. [2022-04-06 08:37:14,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-04-06 08:37:14,850 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.75) internal successors, (71), 3 states have internal predecessors, (71), 1 states have call successors, (3), 2 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 85 [2022-04-06 08:37:14,852 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 08:37:14,853 INFO L225 Difference]: With dead ends: 394 [2022-04-06 08:37:14,853 INFO L226 Difference]: Without dead ends: 394 [2022-04-06 08:37:14,855 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-04-06 08:37:14,858 INFO L913 BasicCegarLoop]: 224 mSDtfsCounter, 264 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 228 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 264 SdHoareTripleChecker+Valid, 231 SdHoareTripleChecker+Invalid, 267 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 228 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-04-06 08:37:14,858 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [264 Valid, 231 Invalid, 267 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 228 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-04-06 08:37:14,859 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 394 states. [2022-04-06 08:37:14,867 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 394 to 366. [2022-04-06 08:37:14,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 366 states, 361 states have (on average 1.4321329639889198) internal successors, (517), 361 states have internal predecessors, (517), 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) [2022-04-06 08:37:14,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 366 states to 366 states and 521 transitions. [2022-04-06 08:37:14,869 INFO L78 Accepts]: Start accepts. Automaton has 366 states and 521 transitions. Word has length 85 [2022-04-06 08:37:14,869 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 08:37:14,869 INFO L478 AbstractCegarLoop]: Abstraction has 366 states and 521 transitions. [2022-04-06 08:37:14,869 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.75) internal successors, (71), 3 states have internal predecessors, (71), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-06 08:37:14,869 INFO L276 IsEmpty]: Start isEmpty. Operand 366 states and 521 transitions. [2022-04-06 08:37:14,871 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2022-04-06 08:37:14,871 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 08:37:14,872 INFO L499 BasicCegarLoop]: trace histogram [3, 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, 1, 1, 1, 1, 1, 1] [2022-04-06 08:37:14,872 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-04-06 08:37:14,872 INFO L403 AbstractCegarLoop]: === Iteration 4 === Targeting ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 08:37:14,872 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 08:37:14,872 INFO L85 PathProgramCache]: Analyzing trace with hash -883709505, now seen corresponding path program 1 times [2022-04-06 08:37:14,872 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 08:37:14,873 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [834041731] [2022-04-06 08:37:14,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 08:37:14,873 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 08:37:14,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:37:14,914 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 08:37:14,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:37:14,918 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-04-06 08:37:14,918 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 08:37:14,918 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [834041731] [2022-04-06 08:37:14,918 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [834041731] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 08:37:14,918 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 08:37:14,918 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-04-06 08:37:14,918 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [721786096] [2022-04-06 08:37:14,918 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 08:37:14,919 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-04-06 08:37:14,919 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-06 08:37:14,919 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-04-06 08:37:14,919 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-04-06 08:37:14,919 INFO L87 Difference]: Start difference. First operand 366 states and 521 transitions. Second operand has 4 states, 4 states have (on average 17.75) internal successors, (71), 3 states have internal predecessors, (71), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-06 08:37:15,087 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 08:37:15,087 INFO L93 Difference]: Finished difference Result 420 states and 587 transitions. [2022-04-06 08:37:15,087 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-04-06 08:37:15,088 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.75) internal successors, (71), 3 states have internal predecessors, (71), 1 states have call successors, (3), 2 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 85 [2022-04-06 08:37:15,089 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 08:37:15,090 INFO L225 Difference]: With dead ends: 420 [2022-04-06 08:37:15,090 INFO L226 Difference]: Without dead ends: 420 [2022-04-06 08:37:15,091 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-04-06 08:37:15,094 INFO L913 BasicCegarLoop]: 226 mSDtfsCounter, 226 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 225 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 226 SdHoareTripleChecker+Valid, 233 SdHoareTripleChecker+Invalid, 242 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 225 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-04-06 08:37:15,094 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [226 Valid, 233 Invalid, 242 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 225 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-04-06 08:37:15,095 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 420 states. [2022-04-06 08:37:15,105 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 420 to 412. [2022-04-06 08:37:15,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 412 states, 407 states have (on average 1.4078624078624078) internal successors, (573), 407 states have internal predecessors, (573), 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) [2022-04-06 08:37:15,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 412 states to 412 states and 577 transitions. [2022-04-06 08:37:15,107 INFO L78 Accepts]: Start accepts. Automaton has 412 states and 577 transitions. Word has length 85 [2022-04-06 08:37:15,108 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 08:37:15,108 INFO L478 AbstractCegarLoop]: Abstraction has 412 states and 577 transitions. [2022-04-06 08:37:15,108 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.75) internal successors, (71), 3 states have internal predecessors, (71), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-06 08:37:15,108 INFO L276 IsEmpty]: Start isEmpty. Operand 412 states and 577 transitions. [2022-04-06 08:37:15,110 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2022-04-06 08:37:15,110 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 08:37:15,110 INFO L499 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-06 08:37:15,110 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-04-06 08:37:15,110 INFO L403 AbstractCegarLoop]: === Iteration 5 === Targeting ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 08:37:15,111 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 08:37:15,111 INFO L85 PathProgramCache]: Analyzing trace with hash 779145481, now seen corresponding path program 1 times [2022-04-06 08:37:15,111 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 08:37:15,111 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1660672405] [2022-04-06 08:37:15,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 08:37:15,111 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 08:37:15,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:37:15,148 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 08:37:15,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:37:15,152 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 40 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-04-06 08:37:15,152 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 08:37:15,152 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1660672405] [2022-04-06 08:37:15,152 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1660672405] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 08:37:15,152 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 08:37:15,152 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-04-06 08:37:15,152 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [203870469] [2022-04-06 08:37:15,153 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 08:37:15,153 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-04-06 08:37:15,153 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-06 08:37:15,153 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-04-06 08:37:15,153 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-04-06 08:37:15,153 INFO L87 Difference]: Start difference. First operand 412 states and 577 transitions. Second operand has 4 states, 4 states have (on average 21.0) internal successors, (84), 3 states have internal predecessors, (84), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-06 08:37:15,309 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 08:37:15,309 INFO L93 Difference]: Finished difference Result 608 states and 854 transitions. [2022-04-06 08:37:15,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-04-06 08:37:15,311 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 21.0) internal successors, (84), 3 states have internal predecessors, (84), 1 states have call successors, (3), 2 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 98 [2022-04-06 08:37:15,312 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 08:37:15,315 INFO L225 Difference]: With dead ends: 608 [2022-04-06 08:37:15,316 INFO L226 Difference]: Without dead ends: 602 [2022-04-06 08:37:15,320 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-04-06 08:37:15,321 INFO L913 BasicCegarLoop]: 224 mSDtfsCounter, 352 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 162 mSolverCounterSat, 58 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 352 SdHoareTripleChecker+Valid, 231 SdHoareTripleChecker+Invalid, 220 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 58 IncrementalHoareTripleChecker+Valid, 162 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-04-06 08:37:15,321 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [352 Valid, 231 Invalid, 220 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [58 Valid, 162 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-04-06 08:37:15,322 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 602 states. [2022-04-06 08:37:15,330 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 602 to 588. [2022-04-06 08:37:15,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 588 states, 583 states have (on average 1.41852487135506) internal successors, (827), 583 states have internal predecessors, (827), 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) [2022-04-06 08:37:15,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 588 states to 588 states and 831 transitions. [2022-04-06 08:37:15,332 INFO L78 Accepts]: Start accepts. Automaton has 588 states and 831 transitions. Word has length 98 [2022-04-06 08:37:15,333 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 08:37:15,333 INFO L478 AbstractCegarLoop]: Abstraction has 588 states and 831 transitions. [2022-04-06 08:37:15,334 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.0) internal successors, (84), 3 states have internal predecessors, (84), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-06 08:37:15,334 INFO L276 IsEmpty]: Start isEmpty. Operand 588 states and 831 transitions. [2022-04-06 08:37:15,336 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2022-04-06 08:37:15,336 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 08:37:15,336 INFO L499 BasicCegarLoop]: trace histogram [4, 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, 1, 1, 1, 1, 1, 1] [2022-04-06 08:37:15,336 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-04-06 08:37:15,336 INFO L403 AbstractCegarLoop]: === Iteration 6 === Targeting ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 08:37:15,337 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 08:37:15,337 INFO L85 PathProgramCache]: Analyzing trace with hash 1541749664, now seen corresponding path program 1 times [2022-04-06 08:37:15,337 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 08:37:15,337 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [354315535] [2022-04-06 08:37:15,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 08:37:15,337 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 08:37:15,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:37:15,418 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 08:37:15,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:37:15,425 INFO L134 CoverageAnalysis]: Checked inductivity of 83 backedges. 45 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2022-04-06 08:37:15,425 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 08:37:15,425 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [354315535] [2022-04-06 08:37:15,426 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [354315535] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 08:37:15,426 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 08:37:15,426 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-04-06 08:37:15,426 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1259204315] [2022-04-06 08:37:15,427 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 08:37:15,427 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-04-06 08:37:15,428 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-06 08:37:15,428 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-04-06 08:37:15,428 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-04-06 08:37:15,429 INFO L87 Difference]: Start difference. First operand 588 states and 831 transitions. Second operand has 4 states, 4 states have (on average 19.25) internal successors, (77), 3 states have internal predecessors, (77), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-06 08:37:15,625 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 08:37:15,626 INFO L93 Difference]: Finished difference Result 664 states and 933 transitions. [2022-04-06 08:37:15,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-04-06 08:37:15,626 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.25) internal successors, (77), 3 states have internal predecessors, (77), 1 states have call successors, (3), 2 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 106 [2022-04-06 08:37:15,626 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 08:37:15,630 INFO L225 Difference]: With dead ends: 664 [2022-04-06 08:37:15,630 INFO L226 Difference]: Without dead ends: 664 [2022-04-06 08:37:15,631 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-04-06 08:37:15,632 INFO L913 BasicCegarLoop]: 225 mSDtfsCounter, 258 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 227 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 258 SdHoareTripleChecker+Valid, 232 SdHoareTripleChecker+Invalid, 243 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 227 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-04-06 08:37:15,634 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [258 Valid, 232 Invalid, 243 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 227 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-04-06 08:37:15,635 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 664 states. [2022-04-06 08:37:15,641 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 664 to 638. [2022-04-06 08:37:15,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 638 states, 633 states have (on average 1.401263823064771) internal successors, (887), 633 states have internal predecessors, (887), 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) [2022-04-06 08:37:15,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 638 states to 638 states and 891 transitions. [2022-04-06 08:37:15,644 INFO L78 Accepts]: Start accepts. Automaton has 638 states and 891 transitions. Word has length 106 [2022-04-06 08:37:15,644 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 08:37:15,644 INFO L478 AbstractCegarLoop]: Abstraction has 638 states and 891 transitions. [2022-04-06 08:37:15,645 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.25) internal successors, (77), 3 states have internal predecessors, (77), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-06 08:37:15,645 INFO L276 IsEmpty]: Start isEmpty. Operand 638 states and 891 transitions. [2022-04-06 08:37:15,649 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2022-04-06 08:37:15,649 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 08:37:15,649 INFO L499 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-06 08:37:15,649 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-04-06 08:37:15,650 INFO L403 AbstractCegarLoop]: === Iteration 7 === Targeting ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 08:37:15,650 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 08:37:15,651 INFO L85 PathProgramCache]: Analyzing trace with hash 1480032937, now seen corresponding path program 1 times [2022-04-06 08:37:15,651 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 08:37:15,651 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [614907664] [2022-04-06 08:37:15,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 08:37:15,652 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 08:37:15,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:37:15,719 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 08:37:15,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:37:15,726 INFO L134 CoverageAnalysis]: Checked inductivity of 148 backedges. 65 proven. 0 refuted. 0 times theorem prover too weak. 83 trivial. 0 not checked. [2022-04-06 08:37:15,727 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 08:37:15,727 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [614907664] [2022-04-06 08:37:15,727 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [614907664] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 08:37:15,727 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 08:37:15,727 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-04-06 08:37:15,727 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [805468548] [2022-04-06 08:37:15,727 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 08:37:15,728 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-04-06 08:37:15,728 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-06 08:37:15,728 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-04-06 08:37:15,728 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-04-06 08:37:15,728 INFO L87 Difference]: Start difference. First operand 638 states and 891 transitions. Second operand has 4 states, 4 states have (on average 21.5) internal successors, (86), 3 states have internal predecessors, (86), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-06 08:37:15,910 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 08:37:15,910 INFO L93 Difference]: Finished difference Result 708 states and 981 transitions. [2022-04-06 08:37:15,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-04-06 08:37:15,910 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 21.5) internal successors, (86), 3 states have internal predecessors, (86), 1 states have call successors, (3), 2 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 132 [2022-04-06 08:37:15,910 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 08:37:15,912 INFO L225 Difference]: With dead ends: 708 [2022-04-06 08:37:15,912 INFO L226 Difference]: Without dead ends: 708 [2022-04-06 08:37:15,913 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-04-06 08:37:15,914 INFO L913 BasicCegarLoop]: 225 mSDtfsCounter, 239 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 229 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 239 SdHoareTripleChecker+Valid, 232 SdHoareTripleChecker+Invalid, 247 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 229 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-04-06 08:37:15,914 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [239 Valid, 232 Invalid, 247 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 229 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-04-06 08:37:15,915 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 708 states. [2022-04-06 08:37:15,921 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 708 to 692. [2022-04-06 08:37:15,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 692 states, 687 states have (on average 1.3842794759825328) internal successors, (951), 687 states have internal predecessors, (951), 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) [2022-04-06 08:37:15,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 692 states to 692 states and 955 transitions. [2022-04-06 08:37:15,924 INFO L78 Accepts]: Start accepts. Automaton has 692 states and 955 transitions. Word has length 132 [2022-04-06 08:37:15,924 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 08:37:15,924 INFO L478 AbstractCegarLoop]: Abstraction has 692 states and 955 transitions. [2022-04-06 08:37:15,925 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.5) internal successors, (86), 3 states have internal predecessors, (86), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-06 08:37:15,925 INFO L276 IsEmpty]: Start isEmpty. Operand 692 states and 955 transitions. [2022-04-06 08:37:15,926 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2022-04-06 08:37:15,926 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 08:37:15,927 INFO L499 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-06 08:37:15,927 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-04-06 08:37:15,927 INFO L403 AbstractCegarLoop]: === Iteration 8 === Targeting ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 08:37:15,927 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 08:37:15,927 INFO L85 PathProgramCache]: Analyzing trace with hash -731592814, now seen corresponding path program 1 times [2022-04-06 08:37:15,927 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 08:37:15,927 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1891912024] [2022-04-06 08:37:15,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 08:37:15,928 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 08:37:15,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:37:15,969 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 08:37:15,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:37:15,973 INFO L134 CoverageAnalysis]: Checked inductivity of 116 backedges. 78 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2022-04-06 08:37:15,973 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 08:37:15,973 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1891912024] [2022-04-06 08:37:15,973 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1891912024] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 08:37:15,973 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 08:37:15,973 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-04-06 08:37:15,974 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1158070932] [2022-04-06 08:37:15,976 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 08:37:15,976 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-04-06 08:37:15,977 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-06 08:37:15,977 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-04-06 08:37:15,977 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-04-06 08:37:15,978 INFO L87 Difference]: Start difference. First operand 692 states and 955 transitions. Second operand has 4 states, 4 states have (on average 27.25) internal successors, (109), 3 states have internal predecessors, (109), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-06 08:37:16,120 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 08:37:16,120 INFO L93 Difference]: Finished difference Result 712 states and 976 transitions. [2022-04-06 08:37:16,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-04-06 08:37:16,121 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 27.25) internal successors, (109), 3 states have internal predecessors, (109), 1 states have call successors, (3), 2 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 138 [2022-04-06 08:37:16,121 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 08:37:16,123 INFO L225 Difference]: With dead ends: 712 [2022-04-06 08:37:16,123 INFO L226 Difference]: Without dead ends: 710 [2022-04-06 08:37:16,123 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-04-06 08:37:16,124 INFO L913 BasicCegarLoop]: 224 mSDtfsCounter, 359 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 152 mSolverCounterSat, 59 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 359 SdHoareTripleChecker+Valid, 231 SdHoareTripleChecker+Invalid, 211 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 59 IncrementalHoareTripleChecker+Valid, 152 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-04-06 08:37:16,124 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [359 Valid, 231 Invalid, 211 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [59 Valid, 152 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-04-06 08:37:16,125 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 710 states. [2022-04-06 08:37:16,131 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 710 to 698. [2022-04-06 08:37:16,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 698 states, 693 states have (on average 1.378066378066378) internal successors, (955), 693 states have internal predecessors, (955), 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) [2022-04-06 08:37:16,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 698 states to 698 states and 959 transitions. [2022-04-06 08:37:16,134 INFO L78 Accepts]: Start accepts. Automaton has 698 states and 959 transitions. Word has length 138 [2022-04-06 08:37:16,134 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 08:37:16,134 INFO L478 AbstractCegarLoop]: Abstraction has 698 states and 959 transitions. [2022-04-06 08:37:16,134 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 27.25) internal successors, (109), 3 states have internal predecessors, (109), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-06 08:37:16,134 INFO L276 IsEmpty]: Start isEmpty. Operand 698 states and 959 transitions. [2022-04-06 08:37:16,136 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2022-04-06 08:37:16,136 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 08:37:16,136 INFO L499 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 4, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-06 08:37:16,136 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-04-06 08:37:16,136 INFO L403 AbstractCegarLoop]: === Iteration 9 === Targeting ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 08:37:16,136 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 08:37:16,137 INFO L85 PathProgramCache]: Analyzing trace with hash -538858338, now seen corresponding path program 1 times [2022-04-06 08:37:16,137 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 08:37:16,137 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [33608599] [2022-04-06 08:37:16,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 08:37:16,137 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 08:37:16,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:37:16,176 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 08:37:16,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:37:16,179 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 87 proven. 0 refuted. 0 times theorem prover too weak. 148 trivial. 0 not checked. [2022-04-06 08:37:16,179 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 08:37:16,179 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [33608599] [2022-04-06 08:37:16,179 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [33608599] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 08:37:16,179 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 08:37:16,179 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-04-06 08:37:16,179 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [740129071] [2022-04-06 08:37:16,179 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 08:37:16,180 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-04-06 08:37:16,180 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-06 08:37:16,180 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-04-06 08:37:16,180 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-04-06 08:37:16,180 INFO L87 Difference]: Start difference. First operand 698 states and 959 transitions. Second operand has 4 states, 4 states have (on average 22.5) internal successors, (90), 3 states have internal predecessors, (90), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-06 08:37:16,354 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 08:37:16,354 INFO L93 Difference]: Finished difference Result 760 states and 1031 transitions. [2022-04-06 08:37:16,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-04-06 08:37:16,354 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 22.5) internal successors, (90), 3 states have internal predecessors, (90), 1 states have call successors, (3), 2 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 155 [2022-04-06 08:37:16,355 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 08:37:16,356 INFO L225 Difference]: With dead ends: 760 [2022-04-06 08:37:16,357 INFO L226 Difference]: Without dead ends: 760 [2022-04-06 08:37:16,357 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-04-06 08:37:16,358 INFO L913 BasicCegarLoop]: 225 mSDtfsCounter, 220 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 229 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 220 SdHoareTripleChecker+Valid, 232 SdHoareTripleChecker+Invalid, 251 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 229 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-04-06 08:37:16,359 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [220 Valid, 232 Invalid, 251 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 229 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-04-06 08:37:16,359 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 760 states. [2022-04-06 08:37:16,366 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 760 to 756. [2022-04-06 08:37:16,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 756 states, 751 states have (on average 1.3621837549933422) internal successors, (1023), 751 states have internal predecessors, (1023), 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) [2022-04-06 08:37:16,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 756 states to 756 states and 1027 transitions. [2022-04-06 08:37:16,368 INFO L78 Accepts]: Start accepts. Automaton has 756 states and 1027 transitions. Word has length 155 [2022-04-06 08:37:16,369 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 08:37:16,369 INFO L478 AbstractCegarLoop]: Abstraction has 756 states and 1027 transitions. [2022-04-06 08:37:16,369 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.5) internal successors, (90), 3 states have internal predecessors, (90), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-06 08:37:16,369 INFO L276 IsEmpty]: Start isEmpty. Operand 756 states and 1027 transitions. [2022-04-06 08:37:16,370 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2022-04-06 08:37:16,370 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 08:37:16,371 INFO L499 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 4, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-06 08:37:16,371 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-04-06 08:37:16,371 INFO L403 AbstractCegarLoop]: === Iteration 10 === Targeting ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 08:37:16,371 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 08:37:16,371 INFO L85 PathProgramCache]: Analyzing trace with hash -647558084, now seen corresponding path program 1 times [2022-04-06 08:37:16,371 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 08:37:16,371 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [220375324] [2022-04-06 08:37:16,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 08:37:16,372 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 08:37:16,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:37:16,416 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 08:37:16,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:37:16,419 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 87 proven. 0 refuted. 0 times theorem prover too weak. 148 trivial. 0 not checked. [2022-04-06 08:37:16,419 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 08:37:16,420 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [220375324] [2022-04-06 08:37:16,420 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [220375324] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 08:37:16,420 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 08:37:16,420 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-04-06 08:37:16,420 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [212890865] [2022-04-06 08:37:16,420 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 08:37:16,420 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-04-06 08:37:16,420 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-06 08:37:16,421 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-04-06 08:37:16,421 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-04-06 08:37:16,421 INFO L87 Difference]: Start difference. First operand 756 states and 1027 transitions. Second operand has 4 states, 4 states have (on average 23.75) internal successors, (95), 3 states have internal predecessors, (95), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-06 08:37:16,596 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 08:37:16,597 INFO L93 Difference]: Finished difference Result 818 states and 1099 transitions. [2022-04-06 08:37:16,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-04-06 08:37:16,597 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 23.75) internal successors, (95), 3 states have internal predecessors, (95), 1 states have call successors, (3), 2 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 160 [2022-04-06 08:37:16,597 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 08:37:16,599 INFO L225 Difference]: With dead ends: 818 [2022-04-06 08:37:16,599 INFO L226 Difference]: Without dead ends: 818 [2022-04-06 08:37:16,600 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-04-06 08:37:16,600 INFO L913 BasicCegarLoop]: 213 mSDtfsCounter, 234 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 224 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 234 SdHoareTripleChecker+Valid, 220 SdHoareTripleChecker+Invalid, 250 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 224 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-04-06 08:37:16,600 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [234 Valid, 220 Invalid, 250 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 224 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-04-06 08:37:16,601 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 818 states. [2022-04-06 08:37:16,608 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 818 to 818. [2022-04-06 08:37:16,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 818 states, 813 states have (on average 1.3468634686346863) internal successors, (1095), 813 states have internal predecessors, (1095), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-06 08:37:16,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 818 states to 818 states and 1099 transitions. [2022-04-06 08:37:16,611 INFO L78 Accepts]: Start accepts. Automaton has 818 states and 1099 transitions. Word has length 160 [2022-04-06 08:37:16,611 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 08:37:16,611 INFO L478 AbstractCegarLoop]: Abstraction has 818 states and 1099 transitions. [2022-04-06 08:37:16,612 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.75) internal successors, (95), 3 states have internal predecessors, (95), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-06 08:37:16,612 INFO L276 IsEmpty]: Start isEmpty. Operand 818 states and 1099 transitions. [2022-04-06 08:37:16,613 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2022-04-06 08:37:16,613 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 08:37:16,614 INFO L499 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 5, 5, 4, 4, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-06 08:37:16,614 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-04-06 08:37:16,614 INFO L403 AbstractCegarLoop]: === Iteration 11 === Targeting ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 08:37:16,614 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 08:37:16,614 INFO L85 PathProgramCache]: Analyzing trace with hash -1149825200, now seen corresponding path program 1 times [2022-04-06 08:37:16,615 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 08:37:16,615 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1954404393] [2022-04-06 08:37:16,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 08:37:16,615 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 08:37:16,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:37:16,680 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 08:37:16,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:37:16,684 INFO L134 CoverageAnalysis]: Checked inductivity of 348 backedges. 174 proven. 26 refuted. 0 times theorem prover too weak. 148 trivial. 0 not checked. [2022-04-06 08:37:16,684 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 08:37:16,684 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1954404393] [2022-04-06 08:37:16,684 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1954404393] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-06 08:37:16,684 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [870605446] [2022-04-06 08:37:16,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 08:37:16,685 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 08:37:16,685 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-06 08:37:16,699 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) [2022-04-06 08:37:16,740 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-04-06 08:37:16,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:37:16,822 INFO L263 TraceCheckSpWp]: Trace formula consists of 443 conjuncts, 2 conjunts are in the unsatisfiable core [2022-04-06 08:37:16,827 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-06 08:37:17,142 INFO L134 CoverageAnalysis]: Checked inductivity of 348 backedges. 135 proven. 0 refuted. 0 times theorem prover too weak. 213 trivial. 0 not checked. [2022-04-06 08:37:17,142 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-04-06 08:37:17,143 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [870605446] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 08:37:17,143 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-04-06 08:37:17,143 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2022-04-06 08:37:17,143 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [135101167] [2022-04-06 08:37:17,143 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 08:37:17,144 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-04-06 08:37:17,144 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-06 08:37:17,144 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-04-06 08:37:17,144 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-04-06 08:37:17,144 INFO L87 Difference]: Start difference. First operand 818 states and 1099 transitions. Second operand has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 3 states have internal predecessors, (92), 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) [2022-04-06 08:37:17,172 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 08:37:17,172 INFO L93 Difference]: Finished difference Result 1230 states and 1650 transitions. [2022-04-06 08:37:17,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-04-06 08:37:17,172 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 3 states have internal predecessors, (92), 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 188 [2022-04-06 08:37:17,173 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 08:37:17,176 INFO L225 Difference]: With dead ends: 1230 [2022-04-06 08:37:17,176 INFO L226 Difference]: Without dead ends: 1230 [2022-04-06 08:37:17,176 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 193 GetRequests, 189 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-04-06 08:37:17,177 INFO L913 BasicCegarLoop]: 200 mSDtfsCounter, 134 mSDsluCounter, 181 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 134 SdHoareTripleChecker+Valid, 381 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-04-06 08:37:17,177 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [134 Valid, 381 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-04-06 08:37:17,178 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1230 states. [2022-04-06 08:37:17,188 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1230 to 1230. [2022-04-06 08:37:17,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1230 states, 1225 states have (on average 1.343673469387755) internal successors, (1646), 1225 states have internal predecessors, (1646), 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) [2022-04-06 08:37:17,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1230 states to 1230 states and 1650 transitions. [2022-04-06 08:37:17,192 INFO L78 Accepts]: Start accepts. Automaton has 1230 states and 1650 transitions. Word has length 188 [2022-04-06 08:37:17,193 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 08:37:17,193 INFO L478 AbstractCegarLoop]: Abstraction has 1230 states and 1650 transitions. [2022-04-06 08:37:17,193 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 3 states have internal predecessors, (92), 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) [2022-04-06 08:37:17,193 INFO L276 IsEmpty]: Start isEmpty. Operand 1230 states and 1650 transitions. [2022-04-06 08:37:17,195 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2022-04-06 08:37:17,195 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 08:37:17,195 INFO L499 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-06 08:37:17,212 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-04-06 08:37:17,410 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2022-04-06 08:37:17,412 INFO L403 AbstractCegarLoop]: === Iteration 12 === Targeting ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 08:37:17,413 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 08:37:17,413 INFO L85 PathProgramCache]: Analyzing trace with hash 1556839531, now seen corresponding path program 1 times [2022-04-06 08:37:17,413 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 08:37:17,413 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [226887425] [2022-04-06 08:37:17,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 08:37:17,413 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 08:37:17,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:37:17,453 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 08:37:17,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:37:17,455 INFO L134 CoverageAnalysis]: Checked inductivity of 298 backedges. 172 proven. 0 refuted. 0 times theorem prover too weak. 126 trivial. 0 not checked. [2022-04-06 08:37:17,456 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 08:37:17,456 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [226887425] [2022-04-06 08:37:17,456 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [226887425] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 08:37:17,456 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 08:37:17,456 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-04-06 08:37:17,456 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1295543945] [2022-04-06 08:37:17,456 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 08:37:17,456 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-04-06 08:37:17,456 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-06 08:37:17,457 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-04-06 08:37:17,457 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-04-06 08:37:17,457 INFO L87 Difference]: Start difference. First operand 1230 states and 1650 transitions. Second operand has 4 states, 4 states have (on average 26.75) internal successors, (107), 3 states have internal predecessors, (107), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-06 08:37:17,622 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 08:37:17,623 INFO L93 Difference]: Finished difference Result 1636 states and 2191 transitions. [2022-04-06 08:37:17,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-04-06 08:37:17,623 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 26.75) internal successors, (107), 3 states have internal predecessors, (107), 1 states have call successors, (3), 2 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 195 [2022-04-06 08:37:17,623 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 08:37:17,627 INFO L225 Difference]: With dead ends: 1636 [2022-04-06 08:37:17,627 INFO L226 Difference]: Without dead ends: 1636 [2022-04-06 08:37:17,627 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-04-06 08:37:17,628 INFO L913 BasicCegarLoop]: 382 mSDtfsCounter, 345 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 218 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 345 SdHoareTripleChecker+Valid, 389 SdHoareTripleChecker+Invalid, 229 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 218 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-04-06 08:37:17,628 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [345 Valid, 389 Invalid, 229 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 218 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-04-06 08:37:17,629 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1636 states. [2022-04-06 08:37:17,643 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1636 to 1636. [2022-04-06 08:37:17,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1636 states, 1631 states have (on average 1.3408951563458) internal successors, (2187), 1631 states have internal predecessors, (2187), 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) [2022-04-06 08:37:17,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1636 states to 1636 states and 2191 transitions. [2022-04-06 08:37:17,648 INFO L78 Accepts]: Start accepts. Automaton has 1636 states and 2191 transitions. Word has length 195 [2022-04-06 08:37:17,648 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 08:37:17,648 INFO L478 AbstractCegarLoop]: Abstraction has 1636 states and 2191 transitions. [2022-04-06 08:37:17,649 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 26.75) internal successors, (107), 3 states have internal predecessors, (107), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-06 08:37:17,649 INFO L276 IsEmpty]: Start isEmpty. Operand 1636 states and 2191 transitions. [2022-04-06 08:37:17,651 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2022-04-06 08:37:17,651 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 08:37:17,651 INFO L499 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-06 08:37:17,651 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-04-06 08:37:17,651 INFO L403 AbstractCegarLoop]: === Iteration 13 === Targeting ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 08:37:17,652 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 08:37:17,652 INFO L85 PathProgramCache]: Analyzing trace with hash -1120597249, now seen corresponding path program 1 times [2022-04-06 08:37:17,652 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 08:37:17,652 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [998008714] [2022-04-06 08:37:17,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 08:37:17,652 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 08:37:17,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:37:17,682 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 08:37:17,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:37:17,685 INFO L134 CoverageAnalysis]: Checked inductivity of 298 backedges. 234 proven. 0 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2022-04-06 08:37:17,685 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 08:37:17,685 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [998008714] [2022-04-06 08:37:17,685 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [998008714] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 08:37:17,685 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 08:37:17,686 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-04-06 08:37:17,686 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [60994658] [2022-04-06 08:37:17,686 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 08:37:17,686 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-04-06 08:37:17,686 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-06 08:37:17,686 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-04-06 08:37:17,686 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-04-06 08:37:17,687 INFO L87 Difference]: Start difference. First operand 1636 states and 2191 transitions. Second operand has 4 states, 4 states have (on average 35.5) internal successors, (142), 3 states have internal predecessors, (142), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-06 08:37:17,842 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 08:37:17,842 INFO L93 Difference]: Finished difference Result 1687 states and 2249 transitions. [2022-04-06 08:37:17,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-04-06 08:37:17,843 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 35.5) internal successors, (142), 3 states have internal predecessors, (142), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 196 [2022-04-06 08:37:17,843 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 08:37:17,847 INFO L225 Difference]: With dead ends: 1687 [2022-04-06 08:37:17,847 INFO L226 Difference]: Without dead ends: 1687 [2022-04-06 08:37:17,847 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-04-06 08:37:17,848 INFO L913 BasicCegarLoop]: 267 mSDtfsCounter, 225 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 213 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 225 SdHoareTripleChecker+Valid, 274 SdHoareTripleChecker+Invalid, 219 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 213 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-04-06 08:37:17,848 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [225 Valid, 274 Invalid, 219 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 213 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-04-06 08:37:17,849 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1687 states. [2022-04-06 08:37:17,863 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1687 to 1687. [2022-04-06 08:37:17,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1687 states, 1682 states have (on average 1.334720570749108) internal successors, (2245), 1682 states have internal predecessors, (2245), 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) [2022-04-06 08:37:17,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1687 states to 1687 states and 2249 transitions. [2022-04-06 08:37:17,869 INFO L78 Accepts]: Start accepts. Automaton has 1687 states and 2249 transitions. Word has length 196 [2022-04-06 08:37:17,869 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 08:37:17,869 INFO L478 AbstractCegarLoop]: Abstraction has 1687 states and 2249 transitions. [2022-04-06 08:37:17,869 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 35.5) internal successors, (142), 3 states have internal predecessors, (142), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-06 08:37:17,870 INFO L276 IsEmpty]: Start isEmpty. Operand 1687 states and 2249 transitions. [2022-04-06 08:37:17,872 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 234 [2022-04-06 08:37:17,873 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 08:37:17,873 INFO L499 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1] [2022-04-06 08:37:17,873 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-04-06 08:37:17,873 INFO L403 AbstractCegarLoop]: === Iteration 14 === Targeting ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 08:37:17,873 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 08:37:17,873 INFO L85 PathProgramCache]: Analyzing trace with hash 37095226, now seen corresponding path program 1 times [2022-04-06 08:37:17,873 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 08:37:17,873 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1980138105] [2022-04-06 08:37:17,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 08:37:17,874 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 08:37:17,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:37:17,921 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 08:37:17,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:37:17,923 INFO L134 CoverageAnalysis]: Checked inductivity of 452 backedges. 154 proven. 0 refuted. 0 times theorem prover too weak. 298 trivial. 0 not checked. [2022-04-06 08:37:17,924 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 08:37:17,924 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1980138105] [2022-04-06 08:37:17,924 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1980138105] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 08:37:17,924 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 08:37:17,924 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-04-06 08:37:17,924 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [672185178] [2022-04-06 08:37:17,924 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 08:37:17,924 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-04-06 08:37:17,924 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-06 08:37:17,925 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-04-06 08:37:17,925 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-04-06 08:37:17,925 INFO L87 Difference]: Start difference. First operand 1687 states and 2249 transitions. Second operand has 4 states, 4 states have (on average 28.25) internal successors, (113), 3 states have internal predecessors, (113), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-06 08:37:18,119 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 08:37:18,119 INFO L93 Difference]: Finished difference Result 1847 states and 2425 transitions. [2022-04-06 08:37:18,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-04-06 08:37:18,119 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 28.25) internal successors, (113), 3 states have internal predecessors, (113), 1 states have call successors, (3), 2 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 233 [2022-04-06 08:37:18,120 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 08:37:18,123 INFO L225 Difference]: With dead ends: 1847 [2022-04-06 08:37:18,123 INFO L226 Difference]: Without dead ends: 1680 [2022-04-06 08:37:18,124 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-04-06 08:37:18,124 INFO L913 BasicCegarLoop]: 225 mSDtfsCounter, 220 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 241 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 220 SdHoareTripleChecker+Valid, 232 SdHoareTripleChecker+Invalid, 272 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 241 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-04-06 08:37:18,124 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [220 Valid, 232 Invalid, 272 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 241 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-04-06 08:37:18,125 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1680 states. [2022-04-06 08:37:18,139 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1680 to 1680. [2022-04-06 08:37:18,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1680 states, 1675 states have (on average 1.3295522388059702) internal successors, (2227), 1675 states have internal predecessors, (2227), 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) [2022-04-06 08:37:18,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1680 states to 1680 states and 2231 transitions. [2022-04-06 08:37:18,144 INFO L78 Accepts]: Start accepts. Automaton has 1680 states and 2231 transitions. Word has length 233 [2022-04-06 08:37:18,144 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 08:37:18,144 INFO L478 AbstractCegarLoop]: Abstraction has 1680 states and 2231 transitions. [2022-04-06 08:37:18,144 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 28.25) internal successors, (113), 3 states have internal predecessors, (113), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-06 08:37:18,144 INFO L276 IsEmpty]: Start isEmpty. Operand 1680 states and 2231 transitions. [2022-04-06 08:37:18,148 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 346 [2022-04-06 08:37:18,148 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 08:37:18,148 INFO L499 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 6, 6, 6, 6, 6, 6, 6, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-06 08:37:18,148 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-04-06 08:37:18,148 INFO L403 AbstractCegarLoop]: === Iteration 15 === Targeting ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 08:37:18,149 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 08:37:18,149 INFO L85 PathProgramCache]: Analyzing trace with hash -1753718484, now seen corresponding path program 1 times [2022-04-06 08:37:18,149 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 08:37:18,149 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [865384136] [2022-04-06 08:37:18,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 08:37:18,149 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 08:37:18,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:37:18,197 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 08:37:18,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:37:18,201 INFO L134 CoverageAnalysis]: Checked inductivity of 1088 backedges. 719 proven. 0 refuted. 0 times theorem prover too weak. 369 trivial. 0 not checked. [2022-04-06 08:37:18,201 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 08:37:18,201 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [865384136] [2022-04-06 08:37:18,201 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [865384136] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 08:37:18,201 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 08:37:18,202 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-04-06 08:37:18,202 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [281306857] [2022-04-06 08:37:18,202 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 08:37:18,202 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-04-06 08:37:18,202 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-06 08:37:18,203 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-04-06 08:37:18,203 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-04-06 08:37:18,203 INFO L87 Difference]: Start difference. First operand 1680 states and 2231 transitions. Second operand has 4 states, 4 states have (on average 37.25) internal successors, (149), 3 states have internal predecessors, (149), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-06 08:37:18,370 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 08:37:18,370 INFO L93 Difference]: Finished difference Result 3204 states and 4266 transitions. [2022-04-06 08:37:18,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-04-06 08:37:18,370 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 37.25) internal successors, (149), 3 states have internal predecessors, (149), 1 states have call successors, (3), 2 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 345 [2022-04-06 08:37:18,371 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 08:37:18,375 INFO L225 Difference]: With dead ends: 3204 [2022-04-06 08:37:18,376 INFO L226 Difference]: Without dead ends: 2022 [2022-04-06 08:37:18,376 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-04-06 08:37:18,376 INFO L913 BasicCegarLoop]: 390 mSDtfsCounter, 345 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 207 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 345 SdHoareTripleChecker+Valid, 397 SdHoareTripleChecker+Invalid, 212 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 207 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-04-06 08:37:18,376 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [345 Valid, 397 Invalid, 212 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 207 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-04-06 08:37:18,377 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2022 states. [2022-04-06 08:37:18,395 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2022 to 2020. [2022-04-06 08:37:18,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2020 states, 2015 states have (on average 1.3330024813895782) internal successors, (2686), 2015 states have internal predecessors, (2686), 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) [2022-04-06 08:37:18,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2020 states to 2020 states and 2690 transitions. [2022-04-06 08:37:18,402 INFO L78 Accepts]: Start accepts. Automaton has 2020 states and 2690 transitions. Word has length 345 [2022-04-06 08:37:18,402 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 08:37:18,402 INFO L478 AbstractCegarLoop]: Abstraction has 2020 states and 2690 transitions. [2022-04-06 08:37:18,402 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 37.25) internal successors, (149), 3 states have internal predecessors, (149), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-06 08:37:18,402 INFO L276 IsEmpty]: Start isEmpty. Operand 2020 states and 2690 transitions. [2022-04-06 08:37:18,408 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 449 [2022-04-06 08:37:18,408 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 08:37:18,408 INFO L499 BasicCegarLoop]: trace histogram [14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 13, 13, 13, 13, 13, 12, 12, 11, 11, 10, 10, 9, 9, 9, 9, 6, 6, 6, 6, 6, 6, 6, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-06 08:37:18,408 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-04-06 08:37:18,408 INFO L403 AbstractCegarLoop]: === Iteration 16 === Targeting ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 08:37:18,409 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 08:37:18,409 INFO L85 PathProgramCache]: Analyzing trace with hash -1560614213, now seen corresponding path program 1 times [2022-04-06 08:37:18,409 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 08:37:18,409 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1193024947] [2022-04-06 08:37:18,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 08:37:18,409 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 08:37:18,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:37:18,466 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 08:37:18,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:37:18,470 INFO L134 CoverageAnalysis]: Checked inductivity of 2004 backedges. 1192 proven. 26 refuted. 0 times theorem prover too weak. 786 trivial. 0 not checked. [2022-04-06 08:37:18,470 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 08:37:18,470 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1193024947] [2022-04-06 08:37:18,470 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1193024947] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-06 08:37:18,470 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [192778181] [2022-04-06 08:37:18,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 08:37:18,470 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 08:37:18,470 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-06 08:37:18,476 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) [2022-04-06 08:37:18,477 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-04-06 08:37:18,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:37:18,587 INFO L263 TraceCheckSpWp]: Trace formula consists of 783 conjuncts, 2 conjunts are in the unsatisfiable core [2022-04-06 08:37:18,592 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-06 08:37:19,080 INFO L134 CoverageAnalysis]: Checked inductivity of 2004 backedges. 582 proven. 0 refuted. 0 times theorem prover too weak. 1422 trivial. 0 not checked. [2022-04-06 08:37:19,080 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-04-06 08:37:19,080 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [192778181] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 08:37:19,080 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-04-06 08:37:19,081 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2022-04-06 08:37:19,081 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1207894655] [2022-04-06 08:37:19,081 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 08:37:19,081 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-04-06 08:37:19,081 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-06 08:37:19,082 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-04-06 08:37:19,082 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-04-06 08:37:19,082 INFO L87 Difference]: Start difference. First operand 2020 states and 2690 transitions. Second operand has 3 states, 3 states have (on average 47.0) internal successors, (141), 3 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) [2022-04-06 08:37:19,121 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 08:37:19,121 INFO L93 Difference]: Finished difference Result 2812 states and 3750 transitions. [2022-04-06 08:37:19,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-04-06 08:37:19,121 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 47.0) internal successors, (141), 3 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 448 [2022-04-06 08:37:19,122 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 08:37:19,128 INFO L225 Difference]: With dead ends: 2812 [2022-04-06 08:37:19,128 INFO L226 Difference]: Without dead ends: 2429 [2022-04-06 08:37:19,128 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 453 GetRequests, 449 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-04-06 08:37:19,128 INFO L913 BasicCegarLoop]: 192 mSDtfsCounter, 149 mSDsluCounter, 178 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 149 SdHoareTripleChecker+Valid, 370 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-04-06 08:37:19,128 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [149 Valid, 370 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-04-06 08:37:19,130 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2429 states. [2022-04-06 08:37:19,149 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2429 to 2429. [2022-04-06 08:37:19,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2429 states, 2424 states have (on average 1.3333333333333333) internal successors, (3232), 2424 states have internal predecessors, (3232), 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) [2022-04-06 08:37:19,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2429 states to 2429 states and 3236 transitions. [2022-04-06 08:37:19,157 INFO L78 Accepts]: Start accepts. Automaton has 2429 states and 3236 transitions. Word has length 448 [2022-04-06 08:37:19,157 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 08:37:19,157 INFO L478 AbstractCegarLoop]: Abstraction has 2429 states and 3236 transitions. [2022-04-06 08:37:19,158 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 47.0) internal successors, (141), 3 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) [2022-04-06 08:37:19,158 INFO L276 IsEmpty]: Start isEmpty. Operand 2429 states and 3236 transitions. [2022-04-06 08:37:19,165 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 602 [2022-04-06 08:37:19,165 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 08:37:19,165 INFO L499 BasicCegarLoop]: trace histogram [18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 17, 17, 17, 17, 17, 16, 16, 15, 15, 14, 14, 13, 13, 13, 13, 9, 9, 9, 9, 9, 9, 9, 6, 6, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-06 08:37:19,185 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-04-06 08:37:19,379 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-04-06 08:37:19,379 INFO L403 AbstractCegarLoop]: === Iteration 17 === Targeting ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 08:37:19,380 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 08:37:19,380 INFO L85 PathProgramCache]: Analyzing trace with hash 168081285, now seen corresponding path program 1 times [2022-04-06 08:37:19,380 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 08:37:19,380 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1046042661] [2022-04-06 08:37:19,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 08:37:19,380 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 08:37:19,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:37:19,448 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 08:37:19,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:37:19,452 INFO L134 CoverageAnalysis]: Checked inductivity of 3649 backedges. 1775 proven. 26 refuted. 0 times theorem prover too weak. 1848 trivial. 0 not checked. [2022-04-06 08:37:19,452 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 08:37:19,452 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1046042661] [2022-04-06 08:37:19,452 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1046042661] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-06 08:37:19,452 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [937504731] [2022-04-06 08:37:19,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 08:37:19,452 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 08:37:19,453 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-06 08:37:19,453 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) [2022-04-06 08:37:19,454 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-04-06 08:37:19,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:37:19,582 INFO L263 TraceCheckSpWp]: Trace formula consists of 980 conjuncts, 2 conjunts are in the unsatisfiable core [2022-04-06 08:37:19,587 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-06 08:37:20,330 INFO L134 CoverageAnalysis]: Checked inductivity of 3649 backedges. 1179 proven. 0 refuted. 0 times theorem prover too weak. 2470 trivial. 0 not checked. [2022-04-06 08:37:20,330 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-04-06 08:37:20,331 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [937504731] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 08:37:20,331 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-04-06 08:37:20,331 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2022-04-06 08:37:20,331 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2122602642] [2022-04-06 08:37:20,331 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 08:37:20,332 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-04-06 08:37:20,332 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-06 08:37:20,332 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-04-06 08:37:20,332 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-04-06 08:37:20,332 INFO L87 Difference]: Start difference. First operand 2429 states and 3236 transitions. Second operand has 3 states, 3 states have (on average 52.0) internal successors, (156), 3 states have internal predecessors, (156), 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) [2022-04-06 08:37:20,368 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 08:37:20,368 INFO L93 Difference]: Finished difference Result 3221 states and 4298 transitions. [2022-04-06 08:37:20,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-04-06 08:37:20,369 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 52.0) internal successors, (156), 3 states have internal predecessors, (156), 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 601 [2022-04-06 08:37:20,370 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 08:37:20,377 INFO L225 Difference]: With dead ends: 3221 [2022-04-06 08:37:20,377 INFO L226 Difference]: Without dead ends: 3217 [2022-04-06 08:37:20,377 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 606 GetRequests, 602 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-04-06 08:37:20,377 INFO L913 BasicCegarLoop]: 190 mSDtfsCounter, 138 mSDsluCounter, 178 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 138 SdHoareTripleChecker+Valid, 368 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-04-06 08:37:20,377 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [138 Valid, 368 Invalid, 51 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-04-06 08:37:20,379 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3217 states. [2022-04-06 08:37:20,405 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3217 to 3215. [2022-04-06 08:37:20,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3215 states, 3210 states have (on average 1.3348909657320873) internal successors, (4285), 3210 states have internal predecessors, (4285), 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) [2022-04-06 08:37:20,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3215 states to 3215 states and 4289 transitions. [2022-04-06 08:37:20,412 INFO L78 Accepts]: Start accepts. Automaton has 3215 states and 4289 transitions. Word has length 601 [2022-04-06 08:37:20,412 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 08:37:20,412 INFO L478 AbstractCegarLoop]: Abstraction has 3215 states and 4289 transitions. [2022-04-06 08:37:20,412 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 52.0) internal successors, (156), 3 states have internal predecessors, (156), 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) [2022-04-06 08:37:20,413 INFO L276 IsEmpty]: Start isEmpty. Operand 3215 states and 4289 transitions. [2022-04-06 08:37:20,421 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 602 [2022-04-06 08:37:20,422 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 08:37:20,422 INFO L499 BasicCegarLoop]: trace histogram [18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 17, 17, 17, 17, 17, 16, 16, 15, 15, 14, 14, 13, 13, 13, 13, 9, 9, 9, 9, 9, 9, 9, 6, 6, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-06 08:37:20,441 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-04-06 08:37:20,631 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 08:37:20,631 INFO L403 AbstractCegarLoop]: === Iteration 18 === Targeting ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 08:37:20,632 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 08:37:20,632 INFO L85 PathProgramCache]: Analyzing trace with hash -786147610, now seen corresponding path program 1 times [2022-04-06 08:37:20,632 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 08:37:20,632 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1786552232] [2022-04-06 08:37:20,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 08:37:20,632 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 08:37:20,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:37:20,702 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 08:37:20,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:37:20,707 INFO L134 CoverageAnalysis]: Checked inductivity of 3649 backedges. 1775 proven. 26 refuted. 0 times theorem prover too weak. 1848 trivial. 0 not checked. [2022-04-06 08:37:20,707 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 08:37:20,707 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1786552232] [2022-04-06 08:37:20,707 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1786552232] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-06 08:37:20,707 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1017483416] [2022-04-06 08:37:20,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 08:37:20,707 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 08:37:20,707 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-06 08:37:20,708 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-06 08:37:20,709 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-04-06 08:37:20,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:37:20,836 INFO L263 TraceCheckSpWp]: Trace formula consists of 983 conjuncts, 3 conjunts are in the unsatisfiable core [2022-04-06 08:37:20,841 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-06 08:37:21,709 INFO L134 CoverageAnalysis]: Checked inductivity of 3649 backedges. 1193 proven. 0 refuted. 0 times theorem prover too weak. 2456 trivial. 0 not checked. [2022-04-06 08:37:21,710 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-04-06 08:37:21,710 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1017483416] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 08:37:21,710 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-04-06 08:37:21,710 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2022-04-06 08:37:21,710 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [731718181] [2022-04-06 08:37:21,710 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 08:37:21,711 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-04-06 08:37:21,711 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-06 08:37:21,711 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-04-06 08:37:21,711 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-04-06 08:37:21,711 INFO L87 Difference]: Start difference. First operand 3215 states and 4289 transitions. Second operand has 3 states, 3 states have (on average 53.666666666666664) internal successors, (161), 3 states have internal predecessors, (161), 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) [2022-04-06 08:37:21,723 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 08:37:21,723 INFO L93 Difference]: Finished difference Result 2803 states and 3743 transitions. [2022-04-06 08:37:21,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-04-06 08:37:21,724 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 53.666666666666664) internal successors, (161), 3 states have internal predecessors, (161), 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 601 [2022-04-06 08:37:21,724 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 08:37:21,731 INFO L225 Difference]: With dead ends: 2803 [2022-04-06 08:37:21,731 INFO L226 Difference]: Without dead ends: 2803 [2022-04-06 08:37:21,731 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 606 GetRequests, 602 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-04-06 08:37:21,731 INFO L913 BasicCegarLoop]: 383 mSDtfsCounter, 104 mSDsluCounter, 191 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 104 SdHoareTripleChecker+Valid, 574 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-04-06 08:37:21,731 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [104 Valid, 574 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-04-06 08:37:21,733 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2803 states. [2022-04-06 08:37:21,751 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2803 to 2455. [2022-04-06 08:37:21,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2455 states, 2450 states have (on average 1.3342857142857143) internal successors, (3269), 2450 states have internal predecessors, (3269), 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) [2022-04-06 08:37:21,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2455 states to 2455 states and 3273 transitions. [2022-04-06 08:37:21,781 INFO L78 Accepts]: Start accepts. Automaton has 2455 states and 3273 transitions. Word has length 601 [2022-04-06 08:37:21,781 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 08:37:21,781 INFO L478 AbstractCegarLoop]: Abstraction has 2455 states and 3273 transitions. [2022-04-06 08:37:21,781 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 53.666666666666664) internal successors, (161), 3 states have internal predecessors, (161), 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) [2022-04-06 08:37:21,782 INFO L276 IsEmpty]: Start isEmpty. Operand 2455 states and 3273 transitions. [2022-04-06 08:37:21,786 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 602 [2022-04-06 08:37:21,786 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 08:37:21,786 INFO L499 BasicCegarLoop]: trace histogram [18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 17, 17, 17, 17, 17, 16, 16, 15, 15, 14, 14, 13, 13, 13, 13, 9, 9, 9, 9, 9, 9, 9, 6, 6, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-06 08:37:21,806 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-04-06 08:37:22,003 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2022-04-06 08:37:22,004 INFO L403 AbstractCegarLoop]: === Iteration 19 === Targeting ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 08:37:22,004 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 08:37:22,004 INFO L85 PathProgramCache]: Analyzing trace with hash 1838306117, now seen corresponding path program 1 times [2022-04-06 08:37:22,004 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 08:37:22,004 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [114307811] [2022-04-06 08:37:22,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 08:37:22,005 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 08:37:22,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:37:22,071 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 08:37:22,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:37:22,075 INFO L134 CoverageAnalysis]: Checked inductivity of 3649 backedges. 1775 proven. 26 refuted. 0 times theorem prover too weak. 1848 trivial. 0 not checked. [2022-04-06 08:37:22,075 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 08:37:22,075 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [114307811] [2022-04-06 08:37:22,076 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [114307811] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-06 08:37:22,076 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1019946431] [2022-04-06 08:37:22,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 08:37:22,076 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 08:37:22,076 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-06 08:37:22,077 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-06 08:37:22,078 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-04-06 08:37:22,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:37:22,208 INFO L263 TraceCheckSpWp]: Trace formula consists of 984 conjuncts, 3 conjunts are in the unsatisfiable core [2022-04-06 08:37:22,212 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-06 08:37:22,818 INFO L134 CoverageAnalysis]: Checked inductivity of 3649 backedges. 1775 proven. 26 refuted. 0 times theorem prover too weak. 1848 trivial. 0 not checked. [2022-04-06 08:37:22,819 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-06 08:37:23,626 INFO L134 CoverageAnalysis]: Checked inductivity of 3649 backedges. 1775 proven. 26 refuted. 0 times theorem prover too weak. 1848 trivial. 0 not checked. [2022-04-06 08:37:23,627 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1019946431] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-06 08:37:23,627 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-04-06 08:37:23,627 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4, 4] total 7 [2022-04-06 08:37:23,627 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [163753256] [2022-04-06 08:37:23,627 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-04-06 08:37:23,630 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-04-06 08:37:23,630 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-06 08:37:23,631 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-04-06 08:37:23,631 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-04-06 08:37:23,631 INFO L87 Difference]: Start difference. First operand 2455 states and 3273 transitions. Second operand has 7 states, 7 states have (on average 36.42857142857143) internal successors, (255), 6 states have internal predecessors, (255), 1 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-06 08:37:24,174 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 08:37:24,174 INFO L93 Difference]: Finished difference Result 3170 states and 4201 transitions. [2022-04-06 08:37:24,174 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-04-06 08:37:24,175 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 36.42857142857143) internal successors, (255), 6 states have internal predecessors, (255), 1 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 601 [2022-04-06 08:37:24,175 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 08:37:24,182 INFO L225 Difference]: With dead ends: 3170 [2022-04-06 08:37:24,182 INFO L226 Difference]: Without dead ends: 3041 [2022-04-06 08:37:24,182 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 1217 GetRequests, 1207 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2022-04-06 08:37:24,182 INFO L913 BasicCegarLoop]: 317 mSDtfsCounter, 764 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 775 mSolverCounterSat, 77 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 764 SdHoareTripleChecker+Valid, 334 SdHoareTripleChecker+Invalid, 852 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 77 IncrementalHoareTripleChecker+Valid, 775 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-04-06 08:37:24,182 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [764 Valid, 334 Invalid, 852 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [77 Valid, 775 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-04-06 08:37:24,184 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3041 states. [2022-04-06 08:37:24,201 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3041 to 2418. [2022-04-06 08:37:24,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2418 states, 2413 states have (on average 1.3315375051802736) internal successors, (3213), 2413 states have internal predecessors, (3213), 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) [2022-04-06 08:37:24,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2418 states to 2418 states and 3217 transitions. [2022-04-06 08:37:24,219 INFO L78 Accepts]: Start accepts. Automaton has 2418 states and 3217 transitions. Word has length 601 [2022-04-06 08:37:24,219 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 08:37:24,219 INFO L478 AbstractCegarLoop]: Abstraction has 2418 states and 3217 transitions. [2022-04-06 08:37:24,220 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 36.42857142857143) internal successors, (255), 6 states have internal predecessors, (255), 1 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-06 08:37:24,220 INFO L276 IsEmpty]: Start isEmpty. Operand 2418 states and 3217 transitions. [2022-04-06 08:37:24,225 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 766 [2022-04-06 08:37:24,226 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 08:37:24,226 INFO L499 BasicCegarLoop]: trace histogram [23, 23, 23, 23, 23, 23, 23, 23, 23, 23, 22, 22, 22, 22, 22, 21, 21, 20, 20, 19, 19, 18, 18, 18, 18, 14, 10, 10, 10, 10, 10, 10, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-06 08:37:24,245 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-04-06 08:37:24,431 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 08:37:24,431 INFO L403 AbstractCegarLoop]: === Iteration 20 === Targeting ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 08:37:24,432 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 08:37:24,432 INFO L85 PathProgramCache]: Analyzing trace with hash -2100819575, now seen corresponding path program 1 times [2022-04-06 08:37:24,432 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 08:37:24,432 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1171025697] [2022-04-06 08:37:24,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 08:37:24,432 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 08:37:24,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:37:24,508 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 08:37:24,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:37:24,512 INFO L134 CoverageAnalysis]: Checked inductivity of 6182 backedges. 2675 proven. 0 refuted. 0 times theorem prover too weak. 3507 trivial. 0 not checked. [2022-04-06 08:37:24,512 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 08:37:24,513 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1171025697] [2022-04-06 08:37:24,513 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1171025697] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 08:37:24,513 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 08:37:24,513 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-04-06 08:37:24,514 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [359556381] [2022-04-06 08:37:24,514 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 08:37:24,514 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-04-06 08:37:24,514 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-06 08:37:24,515 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-04-06 08:37:24,515 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-04-06 08:37:24,515 INFO L87 Difference]: Start difference. First operand 2418 states and 3217 transitions. Second operand has 4 states, 4 states have (on average 43.75) internal successors, (175), 3 states have internal predecessors, (175), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-06 08:37:24,700 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 08:37:24,700 INFO L93 Difference]: Finished difference Result 2670 states and 3504 transitions. [2022-04-06 08:37:24,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-04-06 08:37:24,701 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 43.75) internal successors, (175), 3 states have internal predecessors, (175), 1 states have call successors, (3), 2 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 765 [2022-04-06 08:37:24,701 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 08:37:24,706 INFO L225 Difference]: With dead ends: 2670 [2022-04-06 08:37:24,707 INFO L226 Difference]: Without dead ends: 2670 [2022-04-06 08:37:24,707 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-04-06 08:37:24,707 INFO L913 BasicCegarLoop]: 220 mSDtfsCounter, 215 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 231 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 215 SdHoareTripleChecker+Valid, 227 SdHoareTripleChecker+Invalid, 255 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 231 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-04-06 08:37:24,707 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [215 Valid, 227 Invalid, 255 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 231 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-04-06 08:37:24,709 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2670 states. [2022-04-06 08:37:24,724 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2670 to 2656. [2022-04-06 08:37:24,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2656 states, 2651 states have (on average 1.3149754809505847) internal successors, (3486), 2651 states have internal predecessors, (3486), 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) [2022-04-06 08:37:24,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2656 states to 2656 states and 3490 transitions. [2022-04-06 08:37:24,728 INFO L78 Accepts]: Start accepts. Automaton has 2656 states and 3490 transitions. Word has length 765 [2022-04-06 08:37:24,729 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 08:37:24,729 INFO L478 AbstractCegarLoop]: Abstraction has 2656 states and 3490 transitions. [2022-04-06 08:37:24,729 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 43.75) internal successors, (175), 3 states have internal predecessors, (175), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-06 08:37:24,729 INFO L276 IsEmpty]: Start isEmpty. Operand 2656 states and 3490 transitions. [2022-04-06 08:37:24,736 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 890 [2022-04-06 08:37:24,736 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 08:37:24,736 INFO L499 BasicCegarLoop]: trace histogram [27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 26, 26, 26, 26, 26, 25, 25, 24, 24, 23, 23, 22, 22, 22, 22, 18, 14, 14, 10, 10, 10, 10, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-06 08:37:24,736 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-04-06 08:37:24,736 INFO L403 AbstractCegarLoop]: === Iteration 21 === Targeting ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 08:37:24,736 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 08:37:24,737 INFO L85 PathProgramCache]: Analyzing trace with hash -1774785123, now seen corresponding path program 1 times [2022-04-06 08:37:24,737 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 08:37:24,737 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1664152831] [2022-04-06 08:37:24,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 08:37:24,737 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 08:37:24,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:37:24,849 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 08:37:24,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:37:24,855 INFO L134 CoverageAnalysis]: Checked inductivity of 8724 backedges. 3742 proven. 0 refuted. 0 times theorem prover too weak. 4982 trivial. 0 not checked. [2022-04-06 08:37:24,855 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 08:37:24,855 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1664152831] [2022-04-06 08:37:24,855 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1664152831] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 08:37:24,855 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 08:37:24,855 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-04-06 08:37:24,856 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [461635831] [2022-04-06 08:37:24,856 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 08:37:24,856 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-04-06 08:37:24,856 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-06 08:37:24,856 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-04-06 08:37:24,856 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-04-06 08:37:24,857 INFO L87 Difference]: Start difference. First operand 2656 states and 3490 transitions. Second operand has 4 states, 4 states have (on average 46.25) internal successors, (185), 3 states have internal predecessors, (185), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-06 08:37:25,061 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 08:37:25,061 INFO L93 Difference]: Finished difference Result 2922 states and 3791 transitions. [2022-04-06 08:37:25,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-04-06 08:37:25,062 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 46.25) internal successors, (185), 3 states have internal predecessors, (185), 1 states have call successors, (3), 2 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 889 [2022-04-06 08:37:25,062 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 08:37:25,075 INFO L225 Difference]: With dead ends: 2922 [2022-04-06 08:37:25,075 INFO L226 Difference]: Without dead ends: 2922 [2022-04-06 08:37:25,075 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-04-06 08:37:25,076 INFO L913 BasicCegarLoop]: 220 mSDtfsCounter, 215 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 233 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 215 SdHoareTripleChecker+Valid, 227 SdHoareTripleChecker+Invalid, 259 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 233 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-04-06 08:37:25,076 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [215 Valid, 227 Invalid, 259 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 233 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-04-06 08:37:25,077 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2922 states. [2022-04-06 08:37:25,102 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2922 to 2908. [2022-04-06 08:37:25,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2908 states, 2903 states have (on average 1.2996899758870135) internal successors, (3773), 2903 states have internal predecessors, (3773), 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) [2022-04-06 08:37:25,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2908 states to 2908 states and 3777 transitions. [2022-04-06 08:37:25,107 INFO L78 Accepts]: Start accepts. Automaton has 2908 states and 3777 transitions. Word has length 889 [2022-04-06 08:37:25,108 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 08:37:25,108 INFO L478 AbstractCegarLoop]: Abstraction has 2908 states and 3777 transitions. [2022-04-06 08:37:25,108 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 46.25) internal successors, (185), 3 states have internal predecessors, (185), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-06 08:37:25,108 INFO L276 IsEmpty]: Start isEmpty. Operand 2908 states and 3777 transitions. [2022-04-06 08:37:25,118 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1022 [2022-04-06 08:37:25,118 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 08:37:25,118 INFO L499 BasicCegarLoop]: trace histogram [31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 30, 30, 30, 30, 30, 29, 29, 28, 28, 27, 27, 26, 26, 26, 26, 22, 18, 18, 14, 14, 10, 10, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-06 08:37:25,119 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-04-06 08:37:25,119 INFO L403 AbstractCegarLoop]: === Iteration 22 === Targeting ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 08:37:25,119 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 08:37:25,119 INFO L85 PathProgramCache]: Analyzing trace with hash -228540207, now seen corresponding path program 1 times [2022-04-06 08:37:25,119 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 08:37:25,119 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [481043493] [2022-04-06 08:37:25,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 08:37:25,120 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 08:37:25,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:37:25,245 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 08:37:25,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:37:25,252 INFO L134 CoverageAnalysis]: Checked inductivity of 11822 backedges. 6447 proven. 26 refuted. 0 times theorem prover too weak. 5349 trivial. 0 not checked. [2022-04-06 08:37:25,252 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 08:37:25,252 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [481043493] [2022-04-06 08:37:25,252 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [481043493] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-06 08:37:25,252 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [354939348] [2022-04-06 08:37:25,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 08:37:25,252 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 08:37:25,253 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-06 08:37:25,255 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-06 08:37:25,256 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-04-06 08:37:25,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:37:25,445 INFO L263 TraceCheckSpWp]: Trace formula consists of 1550 conjuncts, 3 conjunts are in the unsatisfiable core [2022-04-06 08:37:25,452 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-06 08:37:26,406 INFO L134 CoverageAnalysis]: Checked inductivity of 11822 backedges. 6447 proven. 26 refuted. 0 times theorem prover too weak. 5349 trivial. 0 not checked. [2022-04-06 08:37:26,407 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-06 08:37:27,408 INFO L134 CoverageAnalysis]: Checked inductivity of 11822 backedges. 6447 proven. 26 refuted. 0 times theorem prover too weak. 5349 trivial. 0 not checked. [2022-04-06 08:37:27,409 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [354939348] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-06 08:37:27,409 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-04-06 08:37:27,409 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4, 4] total 9 [2022-04-06 08:37:27,409 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1541881934] [2022-04-06 08:37:27,409 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-04-06 08:37:27,410 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-04-06 08:37:27,410 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-06 08:37:27,411 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-04-06 08:37:27,411 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2022-04-06 08:37:27,411 INFO L87 Difference]: Start difference. First operand 2908 states and 3777 transitions. Second operand has 9 states, 9 states have (on average 39.44444444444444) internal successors, (355), 8 states have internal predecessors, (355), 1 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-06 08:37:27,885 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 08:37:27,886 INFO L93 Difference]: Finished difference Result 1892 states and 2461 transitions. [2022-04-06 08:37:27,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-04-06 08:37:27,886 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 39.44444444444444) internal successors, (355), 8 states have internal predecessors, (355), 1 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 1021 [2022-04-06 08:37:27,887 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 08:37:27,887 INFO L225 Difference]: With dead ends: 1892 [2022-04-06 08:37:27,887 INFO L226 Difference]: Without dead ends: 0 [2022-04-06 08:37:27,887 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 2055 GetRequests, 2044 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=52, Invalid=104, Unknown=0, NotChecked=0, Total=156 [2022-04-06 08:37:27,888 INFO L913 BasicCegarLoop]: 303 mSDtfsCounter, 427 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 875 mSolverCounterSat, 65 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 427 SdHoareTripleChecker+Valid, 315 SdHoareTripleChecker+Invalid, 940 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 875 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-04-06 08:37:27,888 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [427 Valid, 315 Invalid, 940 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [65 Valid, 875 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-04-06 08:37:27,888 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-04-06 08:37:27,888 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-04-06 08:37:27,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-06 08:37:27,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-04-06 08:37:27,888 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 1021 [2022-04-06 08:37:27,888 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 08:37:27,888 INFO L478 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-04-06 08:37:27,889 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 39.44444444444444) internal successors, (355), 8 states have internal predecessors, (355), 1 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-06 08:37:27,889 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-04-06 08:37:27,889 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-06 08:37:27,891 INFO L788 garLoopResultBuilder]: Registering result SAFE for location ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-04-06 08:37:27,913 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-04-06 08:37:28,107 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 08:37:28,110 INFO L719 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-06 08:37:28,111 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-04-06 08:37:28,112 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.04 08:37:28 BasicIcfg [2022-04-06 08:37:28,112 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-04-06 08:37:28,113 INFO L158 Benchmark]: Toolchain (without parser) took 15391.21ms. Allocated memory was 231.7MB in the beginning and 434.1MB in the end (delta: 202.4MB). Free memory was 173.6MB in the beginning and 199.3MB in the end (delta: -25.8MB). Peak memory consumption was 176.4MB. Max. memory is 8.0GB. [2022-04-06 08:37:28,113 INFO L158 Benchmark]: CDTParser took 0.09ms. Allocated memory is still 231.7MB. Free memory is still 190.5MB. There was no memory consumed. Max. memory is 8.0GB. [2022-04-06 08:37:28,113 INFO L158 Benchmark]: CACSL2BoogieTranslator took 257.76ms. Allocated memory is still 231.7MB. Free memory was 173.4MB in the beginning and 196.0MB in the end (delta: -22.5MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. [2022-04-06 08:37:28,113 INFO L158 Benchmark]: Boogie Preprocessor took 33.87ms. Allocated memory is still 231.7MB. Free memory was 196.0MB in the beginning and 193.4MB in the end (delta: 2.5MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-04-06 08:37:28,117 INFO L158 Benchmark]: RCFGBuilder took 505.52ms. Allocated memory is still 231.7MB. Free memory was 193.4MB in the beginning and 166.0MB in the end (delta: 27.5MB). Peak memory consumption was 27.3MB. Max. memory is 8.0GB. [2022-04-06 08:37:28,117 INFO L158 Benchmark]: IcfgTransformer took 41.57ms. Allocated memory is still 231.7MB. Free memory was 166.0MB in the beginning and 162.4MB in the end (delta: 3.6MB). Peak memory consumption was 4.2MB. Max. memory is 8.0GB. [2022-04-06 08:37:28,118 INFO L158 Benchmark]: TraceAbstraction took 14546.96ms. Allocated memory was 231.7MB in the beginning and 434.1MB in the end (delta: 202.4MB). Free memory was 162.0MB in the beginning and 199.3MB in the end (delta: -37.4MB). Peak memory consumption was 166.0MB. Max. memory is 8.0GB. [2022-04-06 08:37:28,118 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.09ms. Allocated memory is still 231.7MB. Free memory is still 190.5MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 257.76ms. Allocated memory is still 231.7MB. Free memory was 173.4MB in the beginning and 196.0MB in the end (delta: -22.5MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. * Boogie Preprocessor took 33.87ms. Allocated memory is still 231.7MB. Free memory was 196.0MB in the beginning and 193.4MB in the end (delta: 2.5MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 505.52ms. Allocated memory is still 231.7MB. Free memory was 193.4MB in the beginning and 166.0MB in the end (delta: 27.5MB). Peak memory consumption was 27.3MB. Max. memory is 8.0GB. * IcfgTransformer took 41.57ms. Allocated memory is still 231.7MB. Free memory was 166.0MB in the beginning and 162.4MB in the end (delta: 3.6MB). Peak memory consumption was 4.2MB. Max. memory is 8.0GB. * TraceAbstraction took 14546.96ms. Allocated memory was 231.7MB in the beginning and 434.1MB in the end (delta: 202.4MB). Free memory was 162.0MB in the beginning and 199.3MB in the end (delta: -37.4MB). Peak memory consumption was 166.0MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 642]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 156 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 14.5s, OverallIterations: 22, TraceHistogramMax: 31, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.1s, AutomataDifference: 4.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 6322 SdHoareTripleChecker+Valid, 3.7s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 6320 mSDsluCounter, 6417 SdHoareTripleChecker+Invalid, 2.9s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 871 mSDsCounter, 573 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 5252 IncrementalHoareTripleChecker+Invalid, 5825 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 573 mSolverCounterUnsat, 5546 mSDtfsCounter, 5252 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 5241 GetRequests, 5156 SyntacticMatches, 0 SemanticMatches, 85 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=3215occurred in iteration=17, InterpolantAutomatonStates: 91, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.4s AutomataMinimizationTime, 22 MinimizatonAttempts, 1119 StatesRemovedByMinimization, 14 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 0.8s SatisfiabilityAnalysisTime, 6.9s InterpolantComputationTime, 10614 NumberOfCodeBlocks, 10614 NumberOfCodeBlocksAsserted, 28 NumberOfCheckSat, 12206 ConstructedInterpolants, 0 QuantifiedInterpolants, 17010 SizeOfPredicates, 2 NumberOfNonLiveVariables, 5723 ConjunctsInSsa, 15 ConjunctsInUnsatCore, 30 InterpolantComputations, 20 PerfectInterpolantSequences, 83450/83710 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2022-04-06 08:37:28,145 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...