/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_3.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-d966a43 [2022-01-31 16:16:57,505 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-31 16:16:57,507 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-31 16:16:57,563 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-31 16:16:57,564 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-31 16:16:57,567 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-31 16:16:57,569 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-31 16:16:57,575 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-31 16:16:57,576 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-31 16:16:57,581 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-31 16:16:57,582 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-31 16:16:57,583 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-31 16:16:57,583 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-31 16:16:57,584 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-31 16:16:57,584 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-31 16:16:57,585 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-31 16:16:57,586 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-31 16:16:57,588 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-31 16:16:57,590 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-31 16:16:57,596 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-31 16:16:57,597 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-31 16:16:57,600 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-31 16:16:57,601 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-31 16:16:57,601 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-31 16:16:57,603 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-01-31 16:16:57,603 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-01-31 16:16:57,603 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-01-31 16:16:57,604 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-01-31 16:16:57,604 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-01-31 16:16:57,605 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-01-31 16:16:57,605 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-01-31 16:16:57,606 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-01-31 16:16:57,606 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-01-31 16:16:57,607 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-01-31 16:16:57,607 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-01-31 16:16:57,608 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-01-31 16:16:57,608 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-01-31 16:16:57,608 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-01-31 16:16:57,608 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-31 16:16:57,609 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-31 16:16:57,610 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-31 16:16:57,614 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/LoopAccelerationJordanC.epf [2022-01-31 16:16:57,627 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-31 16:16:57,627 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-31 16:16:57,629 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-31 16:16:57,629 INFO L138 SettingsManager]: * sizeof long=4 [2022-01-31 16:16:57,629 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-31 16:16:57,629 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-01-31 16:16:57,629 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-31 16:16:57,629 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-31 16:16:57,630 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-31 16:16:57,630 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-31 16:16:57,630 INFO L138 SettingsManager]: * sizeof long double=12 [2022-01-31 16:16:57,631 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-31 16:16:57,631 INFO L138 SettingsManager]: * Use constant arrays=true [2022-01-31 16:16:57,631 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-31 16:16:57,631 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-31 16:16:57,631 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-31 16:16:57,631 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-01-31 16:16:57,631 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-31 16:16:57,631 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-31 16:16:57,632 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-31 16:16:57,632 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-31 16:16:57,633 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-01-31 16:16:57,633 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-31 16:16:57,837 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-31 16:16:57,853 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-31 16:16:57,854 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-31 16:16:57,855 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-31 16:16:57,859 INFO L275 PluginConnector]: CDTParser initialized [2022-01-31 16:16:57,860 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/openssl-simplified/s3_srvr_3.cil.c [2022-01-31 16:16:57,915 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1b5f28740/5e43726554f64a3baec6d69b11e96b2d/FLAG84ad43446 [2022-01-31 16:16:58,302 INFO L306 CDTParser]: Found 1 translation units. [2022-01-31 16:16:58,303 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/openssl-simplified/s3_srvr_3.cil.c [2022-01-31 16:16:58,311 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1b5f28740/5e43726554f64a3baec6d69b11e96b2d/FLAG84ad43446 [2022-01-31 16:16:58,330 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1b5f28740/5e43726554f64a3baec6d69b11e96b2d [2022-01-31 16:16:58,333 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-31 16:16:58,336 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-01-31 16:16:58,337 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-31 16:16:58,337 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-31 16:16:58,339 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-31 16:16:58,340 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.01 04:16:58" (1/1) ... [2022-01-31 16:16:58,341 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@64e20492 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 04:16:58, skipping insertion in model container [2022-01-31 16:16:58,341 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.01 04:16:58" (1/1) ... [2022-01-31 16:16:58,346 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-31 16:16:58,391 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-31 16:16:58,601 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_3.cil.c[42783,42796] [2022-01-31 16:16:58,607 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-31 16:16:58,618 INFO L203 MainTranslator]: Completed pre-run [2022-01-31 16:16:58,656 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_3.cil.c[42783,42796] [2022-01-31 16:16:58,659 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-31 16:16:58,683 INFO L208 MainTranslator]: Completed translation [2022-01-31 16:16:58,683 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 04:16:58 WrapperNode [2022-01-31 16:16:58,683 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-31 16:16:58,684 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-31 16:16:58,684 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-31 16:16:58,684 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-31 16:16:58,692 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 04:16:58" (1/1) ... [2022-01-31 16:16:58,692 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 04:16:58" (1/1) ... [2022-01-31 16:16:58,700 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 04:16:58" (1/1) ... [2022-01-31 16:16:58,700 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 04:16:58" (1/1) ... [2022-01-31 16:16:58,709 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 04:16:58" (1/1) ... [2022-01-31 16:16:58,717 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 04:16:58" (1/1) ... [2022-01-31 16:16:58,719 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 04:16:58" (1/1) ... [2022-01-31 16:16:58,722 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-31 16:16:58,723 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-31 16:16:58,723 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-31 16:16:58,723 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-31 16:16:58,724 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 04:16:58" (1/1) ... [2022-01-31 16:16:58,744 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-31 16:16:58,755 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-31 16:16:58,765 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) [2022-01-31 16:16:58,775 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 [2022-01-31 16:16:58,793 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2022-01-31 16:16:58,793 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-31 16:16:58,793 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2022-01-31 16:16:58,793 INFO L138 BoogieDeclarations]: Found implementation of procedure ssl3_accept [2022-01-31 16:16:58,793 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2022-01-31 16:16:58,793 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2022-01-31 16:16:58,794 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2022-01-31 16:16:58,794 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2022-01-31 16:16:58,794 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-31 16:16:58,794 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2022-01-31 16:16:58,794 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2022-01-31 16:16:58,794 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_long [2022-01-31 16:16:58,794 INFO L130 BoogieDeclarations]: Found specification of procedure ssl3_accept [2022-01-31 16:16:58,794 INFO L130 BoogieDeclarations]: Found specification of procedure main [2022-01-31 16:16:58,795 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2022-01-31 16:16:58,795 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-01-31 16:16:58,795 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-31 16:16:58,795 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-01-31 16:16:58,795 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-01-31 16:16:58,795 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-01-31 16:16:58,922 INFO L234 CfgBuilder]: Building ICFG [2022-01-31 16:16:58,924 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-31 16:16:58,990 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-01-31 16:16:59,269 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##90: assume false; [2022-01-31 16:16:59,269 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##91: assume !false; [2022-01-31 16:16:59,274 INFO L275 CfgBuilder]: Performing block encoding [2022-01-31 16:16:59,281 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-31 16:16:59,281 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-01-31 16:16:59,283 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.01 04:16:59 BoogieIcfgContainer [2022-01-31 16:16:59,283 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-31 16:16:59,284 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-01-31 16:16:59,284 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-01-31 16:16:59,285 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-01-31 16:16:59,287 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.01 04:16:59" (1/1) ... [2022-01-31 16:16:59,314 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 31.01 04:16:59 BasicIcfg [2022-01-31 16:16:59,314 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-01-31 16:16:59,316 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-31 16:16:59,316 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-31 16:16:59,318 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-31 16:16:59,318 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.01 04:16:58" (1/4) ... [2022-01-31 16:16:59,319 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@78651183 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.01 04:16:59, skipping insertion in model container [2022-01-31 16:16:59,319 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 04:16:58" (2/4) ... [2022-01-31 16:16:59,319 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@78651183 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.01 04:16:59, skipping insertion in model container [2022-01-31 16:16:59,320 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.01 04:16:59" (3/4) ... [2022-01-31 16:16:59,320 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@78651183 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 31.01 04:16:59, skipping insertion in model container [2022-01-31 16:16:59,320 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 31.01 04:16:59" (4/4) ... [2022-01-31 16:16:59,321 INFO L111 eAbstractionObserver]: Analyzing ICFG s3_srvr_3.cil.cJordan [2022-01-31 16:16:59,325 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:ForwardPredicates Determinization: PREDICATE_ABSTRACTION [2022-01-31 16:16:59,325 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-31 16:16:59,358 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-31 16:16:59,365 INFO L339 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, mLoopAccelerationTechnique=FAST_UPR [2022-01-31 16:16:59,365 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-01-31 16:16:59,384 INFO L276 IsEmpty]: Start isEmpty. Operand has 150 states, 142 states have (on average 1.7112676056338028) internal successors, (243), 143 states have internal predecessors, (243), 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) [2022-01-31 16:16:59,397 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2022-01-31 16:16:59,397 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 16:16:59,398 INFO L514 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, 1, 1] [2022-01-31 16:16:59,398 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 16:16:59,405 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 16:16:59,406 INFO L85 PathProgramCache]: Analyzing trace with hash 1236908682, now seen corresponding path program 1 times [2022-01-31 16:16:59,413 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-31 16:16:59,413 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [112299512] [2022-01-31 16:16:59,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 16:16:59,415 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 16:16:59,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 16:16:59,711 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 16:16:59,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 16:16:59,733 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 16:16:59,734 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-31 16:16:59,734 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [112299512] [2022-01-31 16:16:59,735 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [112299512] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 16:16:59,735 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 16:16:59,735 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-31 16:16:59,736 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [222225461] [2022-01-31 16:16:59,737 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 16:16:59,741 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-31 16:16:59,741 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-31 16:16:59,767 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-31 16:16:59,768 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-31 16:16:59,772 INFO L87 Difference]: Start difference. First operand has 150 states, 142 states have (on average 1.7112676056338028) internal successors, (243), 143 states have internal predecessors, (243), 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 11.5) internal successors, (46), 3 states have internal predecessors, (46), 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) [2022-01-31 16:17:00,113 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 16:17:00,114 INFO L93 Difference]: Finished difference Result 278 states and 461 transitions. [2022-01-31 16:17:00,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-31 16:17:00,118 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.5) internal successors, (46), 3 states have internal predecessors, (46), 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 50 [2022-01-31 16:17:00,119 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 16:17:00,134 INFO L225 Difference]: With dead ends: 278 [2022-01-31 16:17:00,134 INFO L226 Difference]: Without dead ends: 251 [2022-01-31 16:17:00,136 INFO L932 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 [2022-01-31 16:17:00,139 INFO L933 BasicCegarLoop]: 240 mSDtfsCounter, 634 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 236 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 636 SdHoareTripleChecker+Valid, 249 SdHoareTripleChecker+Invalid, 243 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 236 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-31 16:17:00,139 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [636 Valid, 249 Invalid, 243 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 236 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-31 16:17:00,155 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 251 states. [2022-01-31 16:17:00,191 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 251 to 251. [2022-01-31 16:17:00,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 251 states, 246 states have (on average 1.524390243902439) internal successors, (375), 246 states have internal predecessors, (375), 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) [2022-01-31 16:17:00,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 251 states to 251 states and 379 transitions. [2022-01-31 16:17:00,195 INFO L78 Accepts]: Start accepts. Automaton has 251 states and 379 transitions. Word has length 50 [2022-01-31 16:17:00,195 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 16:17:00,195 INFO L470 AbstractCegarLoop]: Abstraction has 251 states and 379 transitions. [2022-01-31 16:17:00,195 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.5) internal successors, (46), 3 states have internal predecessors, (46), 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) [2022-01-31 16:17:00,195 INFO L276 IsEmpty]: Start isEmpty. Operand 251 states and 379 transitions. [2022-01-31 16:17:00,197 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-01-31 16:17:00,197 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 16:17:00,197 INFO L514 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, 1, 1] [2022-01-31 16:17:00,198 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-31 16:17:00,198 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 16:17:00,198 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 16:17:00,198 INFO L85 PathProgramCache]: Analyzing trace with hash 1031993496, now seen corresponding path program 1 times [2022-01-31 16:17:00,198 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-31 16:17:00,198 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [723083261] [2022-01-31 16:17:00,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 16:17:00,199 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 16:17:00,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 16:17:00,264 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 16:17:00,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 16:17:00,274 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 16:17:00,275 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-31 16:17:00,275 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [723083261] [2022-01-31 16:17:00,275 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [723083261] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 16:17:00,275 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 16:17:00,275 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-31 16:17:00,275 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [861599829] [2022-01-31 16:17:00,276 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 16:17:00,277 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-31 16:17:00,277 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-31 16:17:00,277 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-31 16:17:00,277 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-31 16:17:00,278 INFO L87 Difference]: Start difference. First operand 251 states and 379 transitions. Second operand has 4 states, 4 states have (on average 15.5) internal successors, (62), 3 states have internal predecessors, (62), 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) [2022-01-31 16:17:00,537 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 16:17:00,538 INFO L93 Difference]: Finished difference Result 280 states and 416 transitions. [2022-01-31 16:17:00,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-31 16:17:00,538 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.5) internal successors, (62), 3 states have internal predecessors, (62), 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 66 [2022-01-31 16:17:00,539 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 16:17:00,540 INFO L225 Difference]: With dead ends: 280 [2022-01-31 16:17:00,540 INFO L226 Difference]: Without dead ends: 280 [2022-01-31 16:17:00,540 INFO L932 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 [2022-01-31 16:17:00,542 INFO L933 BasicCegarLoop]: 213 mSDtfsCounter, 215 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 211 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 215 SdHoareTripleChecker+Valid, 220 SdHoareTripleChecker+Invalid, 226 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 211 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-31 16:17:00,542 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [215 Valid, 220 Invalid, 226 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 211 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-31 16:17:00,558 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 280 states. [2022-01-31 16:17:00,566 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 280 to 272. [2022-01-31 16:17:00,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 272 states, 267 states have (on average 1.5018726591760299) internal successors, (401), 267 states have internal predecessors, (401), 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) [2022-01-31 16:17:00,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 272 states to 272 states and 405 transitions. [2022-01-31 16:17:00,568 INFO L78 Accepts]: Start accepts. Automaton has 272 states and 405 transitions. Word has length 66 [2022-01-31 16:17:00,568 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 16:17:00,568 INFO L470 AbstractCegarLoop]: Abstraction has 272 states and 405 transitions. [2022-01-31 16:17:00,568 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.5) internal successors, (62), 3 states have internal predecessors, (62), 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) [2022-01-31 16:17:00,568 INFO L276 IsEmpty]: Start isEmpty. Operand 272 states and 405 transitions. [2022-01-31 16:17:00,571 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2022-01-31 16:17:00,571 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 16:17:00,571 INFO L514 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, 1, 1] [2022-01-31 16:17:00,571 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-31 16:17:00,572 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 16:17:00,573 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 16:17:00,573 INFO L85 PathProgramCache]: Analyzing trace with hash -1138429839, now seen corresponding path program 1 times [2022-01-31 16:17:00,573 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-31 16:17:00,573 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1643658231] [2022-01-31 16:17:00,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 16:17:00,573 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 16:17:00,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 16:17:00,639 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 16:17:00,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 16:17:00,644 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-01-31 16:17:00,644 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-31 16:17:00,645 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1643658231] [2022-01-31 16:17:00,645 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1643658231] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 16:17:00,645 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 16:17:00,645 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-31 16:17:00,645 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [244639049] [2022-01-31 16:17:00,645 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 16:17:00,646 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-31 16:17:00,646 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-31 16:17:00,646 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-31 16:17:00,647 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-31 16:17:00,647 INFO L87 Difference]: Start difference. First operand 272 states and 405 transitions. Second operand has 4 states, 4 states have (on average 18.25) internal successors, (73), 3 states have internal predecessors, (73), 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) [2022-01-31 16:17:00,893 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 16:17:00,893 INFO L93 Difference]: Finished difference Result 364 states and 508 transitions. [2022-01-31 16:17:00,893 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-31 16:17:00,894 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.25) internal successors, (73), 3 states have internal predecessors, (73), 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 87 [2022-01-31 16:17:00,894 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 16:17:00,895 INFO L225 Difference]: With dead ends: 364 [2022-01-31 16:17:00,895 INFO L226 Difference]: Without dead ends: 364 [2022-01-31 16:17:00,896 INFO L932 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 [2022-01-31 16:17:00,897 INFO L933 BasicCegarLoop]: 214 mSDtfsCounter, 216 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 229 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 216 SdHoareTripleChecker+Valid, 221 SdHoareTripleChecker+Invalid, 264 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 229 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-31 16:17:00,897 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [216 Valid, 221 Invalid, 264 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 229 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-31 16:17:00,898 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 364 states. [2022-01-31 16:17:00,905 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 364 to 356. [2022-01-31 16:17:00,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 356 states, 351 states have (on average 1.4102564102564104) internal successors, (495), 351 states have internal predecessors, (495), 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) [2022-01-31 16:17:00,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 356 states to 356 states and 499 transitions. [2022-01-31 16:17:00,907 INFO L78 Accepts]: Start accepts. Automaton has 356 states and 499 transitions. Word has length 87 [2022-01-31 16:17:00,907 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 16:17:00,907 INFO L470 AbstractCegarLoop]: Abstraction has 356 states and 499 transitions. [2022-01-31 16:17:00,908 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.25) internal successors, (73), 3 states have internal predecessors, (73), 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) [2022-01-31 16:17:00,908 INFO L276 IsEmpty]: Start isEmpty. Operand 356 states and 499 transitions. [2022-01-31 16:17:00,910 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2022-01-31 16:17:00,910 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 16:17:00,910 INFO L514 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, 1, 1] [2022-01-31 16:17:00,910 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-01-31 16:17:00,911 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 16:17:00,911 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 16:17:00,911 INFO L85 PathProgramCache]: Analyzing trace with hash -1014356592, now seen corresponding path program 1 times [2022-01-31 16:17:00,911 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-31 16:17:00,911 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [301516130] [2022-01-31 16:17:00,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 16:17:00,912 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 16:17:00,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 16:17:00,960 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 16:17:00,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 16:17:00,968 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-01-31 16:17:00,968 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-31 16:17:00,968 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [301516130] [2022-01-31 16:17:00,969 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [301516130] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 16:17:00,969 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 16:17:00,969 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-31 16:17:00,969 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2086476573] [2022-01-31 16:17:00,969 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 16:17:00,969 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-31 16:17:00,970 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-31 16:17:00,970 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-31 16:17:00,970 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-31 16:17:00,970 INFO L87 Difference]: Start difference. First operand 356 states and 499 transitions. Second operand has 4 states, 4 states have (on average 18.25) internal successors, (73), 3 states have internal predecessors, (73), 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) [2022-01-31 16:17:01,181 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 16:17:01,182 INFO L93 Difference]: Finished difference Result 410 states and 565 transitions. [2022-01-31 16:17:01,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-31 16:17:01,182 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.25) internal successors, (73), 3 states have internal predecessors, (73), 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 87 [2022-01-31 16:17:01,183 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 16:17:01,184 INFO L225 Difference]: With dead ends: 410 [2022-01-31 16:17:01,184 INFO L226 Difference]: Without dead ends: 410 [2022-01-31 16:17:01,185 INFO L932 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 [2022-01-31 16:17:01,186 INFO L933 BasicCegarLoop]: 214 mSDtfsCounter, 214 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 213 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 214 SdHoareTripleChecker+Valid, 221 SdHoareTripleChecker+Invalid, 230 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 213 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-31 16:17:01,186 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [214 Valid, 221 Invalid, 230 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 213 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-31 16:17:01,187 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 410 states. [2022-01-31 16:17:01,192 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 410 to 402. [2022-01-31 16:17:01,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 402 states, 397 states have (on average 1.3879093198992443) internal successors, (551), 397 states have internal predecessors, (551), 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) [2022-01-31 16:17:01,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 402 states to 402 states and 555 transitions. [2022-01-31 16:17:01,195 INFO L78 Accepts]: Start accepts. Automaton has 402 states and 555 transitions. Word has length 87 [2022-01-31 16:17:01,195 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 16:17:01,195 INFO L470 AbstractCegarLoop]: Abstraction has 402 states and 555 transitions. [2022-01-31 16:17:01,195 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.25) internal successors, (73), 3 states have internal predecessors, (73), 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) [2022-01-31 16:17:01,195 INFO L276 IsEmpty]: Start isEmpty. Operand 402 states and 555 transitions. [2022-01-31 16:17:01,197 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2022-01-31 16:17:01,197 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 16:17:01,197 INFO L514 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, 1, 1] [2022-01-31 16:17:01,197 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-01-31 16:17:01,197 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 16:17:01,198 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 16:17:01,198 INFO L85 PathProgramCache]: Analyzing trace with hash 1398536152, now seen corresponding path program 1 times [2022-01-31 16:17:01,198 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-31 16:17:01,198 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1864799159] [2022-01-31 16:17:01,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 16:17:01,199 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 16:17:01,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 16:17:01,246 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 16:17:01,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 16:17:01,251 INFO L134 CoverageAnalysis]: Checked inductivity of 83 backedges. 45 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2022-01-31 16:17:01,251 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-31 16:17:01,251 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1864799159] [2022-01-31 16:17:01,251 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1864799159] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 16:17:01,251 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 16:17:01,252 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-31 16:17:01,252 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [841419769] [2022-01-31 16:17:01,252 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 16:17:01,252 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-31 16:17:01,252 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-31 16:17:01,253 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-31 16:17:01,253 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-31 16:17:01,253 INFO L87 Difference]: Start difference. First operand 402 states and 555 transitions. Second operand has 4 states, 4 states have (on average 19.75) internal successors, (79), 3 states have internal predecessors, (79), 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) [2022-01-31 16:17:01,477 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 16:17:01,477 INFO L93 Difference]: Finished difference Result 478 states and 657 transitions. [2022-01-31 16:17:01,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-31 16:17:01,478 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.75) internal successors, (79), 3 states have internal predecessors, (79), 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 108 [2022-01-31 16:17:01,478 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 16:17:01,480 INFO L225 Difference]: With dead ends: 478 [2022-01-31 16:17:01,480 INFO L226 Difference]: Without dead ends: 478 [2022-01-31 16:17:01,480 INFO L932 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 [2022-01-31 16:17:01,481 INFO L933 BasicCegarLoop]: 213 mSDtfsCounter, 246 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 215 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 246 SdHoareTripleChecker+Valid, 220 SdHoareTripleChecker+Invalid, 234 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 215 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-31 16:17:01,482 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [246 Valid, 220 Invalid, 234 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 215 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-31 16:17:01,483 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 478 states. [2022-01-31 16:17:01,488 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 478 to 452. [2022-01-31 16:17:01,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 452 states, 447 states have (on average 1.366890380313199) internal successors, (611), 447 states have internal predecessors, (611), 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) [2022-01-31 16:17:01,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 452 states to 452 states and 615 transitions. [2022-01-31 16:17:01,490 INFO L78 Accepts]: Start accepts. Automaton has 452 states and 615 transitions. Word has length 108 [2022-01-31 16:17:01,490 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 16:17:01,490 INFO L470 AbstractCegarLoop]: Abstraction has 452 states and 615 transitions. [2022-01-31 16:17:01,491 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.75) internal successors, (79), 3 states have internal predecessors, (79), 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) [2022-01-31 16:17:01,491 INFO L276 IsEmpty]: Start isEmpty. Operand 452 states and 615 transitions. [2022-01-31 16:17:01,492 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2022-01-31 16:17:01,492 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 16:17:01,492 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 16:17:01,492 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-01-31 16:17:01,493 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 16:17:01,493 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 16:17:01,493 INFO L85 PathProgramCache]: Analyzing trace with hash -908571326, now seen corresponding path program 1 times [2022-01-31 16:17:01,493 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-31 16:17:01,493 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1686259008] [2022-01-31 16:17:01,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 16:17:01,494 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 16:17:01,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 16:17:01,539 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 16:17:01,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 16:17:01,543 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 62 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2022-01-31 16:17:01,543 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-31 16:17:01,543 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1686259008] [2022-01-31 16:17:01,543 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1686259008] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 16:17:01,543 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 16:17:01,543 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-31 16:17:01,544 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1838410298] [2022-01-31 16:17:01,544 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 16:17:01,544 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-31 16:17:01,544 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-31 16:17:01,545 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-31 16:17:01,545 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-31 16:17:01,545 INFO L87 Difference]: Start difference. First operand 452 states and 615 transitions. Second operand has 4 states, 4 states have (on average 24.5) internal successors, (98), 3 states have internal predecessors, (98), 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) [2022-01-31 16:17:01,752 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 16:17:01,752 INFO L93 Difference]: Finished difference Result 677 states and 919 transitions. [2022-01-31 16:17:01,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-31 16:17:01,752 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 24.5) internal successors, (98), 3 states have internal predecessors, (98), 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 127 [2022-01-31 16:17:01,753 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 16:17:01,755 INFO L225 Difference]: With dead ends: 677 [2022-01-31 16:17:01,755 INFO L226 Difference]: Without dead ends: 677 [2022-01-31 16:17:01,755 INFO L932 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 [2022-01-31 16:17:01,756 INFO L933 BasicCegarLoop]: 369 mSDtfsCounter, 330 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 202 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 330 SdHoareTripleChecker+Valid, 376 SdHoareTripleChecker+Invalid, 209 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 202 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-31 16:17:01,757 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [330 Valid, 376 Invalid, 209 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 202 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-31 16:17:01,758 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 677 states. [2022-01-31 16:17:01,764 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 677 to 677. [2022-01-31 16:17:01,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 677 states, 672 states have (on average 1.3616071428571428) internal successors, (915), 672 states have internal predecessors, (915), 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) [2022-01-31 16:17:01,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 677 states to 677 states and 919 transitions. [2022-01-31 16:17:01,767 INFO L78 Accepts]: Start accepts. Automaton has 677 states and 919 transitions. Word has length 127 [2022-01-31 16:17:01,768 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 16:17:01,768 INFO L470 AbstractCegarLoop]: Abstraction has 677 states and 919 transitions. [2022-01-31 16:17:01,768 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.5) internal successors, (98), 3 states have internal predecessors, (98), 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) [2022-01-31 16:17:01,768 INFO L276 IsEmpty]: Start isEmpty. Operand 677 states and 919 transitions. [2022-01-31 16:17:01,769 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2022-01-31 16:17:01,770 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 16:17:01,770 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 16:17:01,770 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-01-31 16:17:01,770 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 16:17:01,770 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 16:17:01,771 INFO L85 PathProgramCache]: Analyzing trace with hash -1357267965, now seen corresponding path program 1 times [2022-01-31 16:17:01,771 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-31 16:17:01,771 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1075519698] [2022-01-31 16:17:01,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 16:17:01,771 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 16:17:01,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 16:17:01,820 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 16:17:01,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 16:17:01,824 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 89 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-01-31 16:17:01,824 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-31 16:17:01,824 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1075519698] [2022-01-31 16:17:01,824 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1075519698] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 16:17:01,824 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 16:17:01,825 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-31 16:17:01,825 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1156226285] [2022-01-31 16:17:01,825 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 16:17:01,825 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-31 16:17:01,825 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-31 16:17:01,826 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-31 16:17:01,826 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-31 16:17:01,826 INFO L87 Difference]: Start difference. First operand 677 states and 919 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) [2022-01-31 16:17:02,024 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 16:17:02,024 INFO L93 Difference]: Finished difference Result 904 states and 1226 transitions. [2022-01-31 16:17:02,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-31 16:17:02,024 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 127 [2022-01-31 16:17:02,025 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 16:17:02,029 INFO L225 Difference]: With dead ends: 904 [2022-01-31 16:17:02,029 INFO L226 Difference]: Without dead ends: 904 [2022-01-31 16:17:02,029 INFO L932 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 [2022-01-31 16:17:02,030 INFO L933 BasicCegarLoop]: 372 mSDtfsCounter, 331 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 202 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 331 SdHoareTripleChecker+Valid, 379 SdHoareTripleChecker+Invalid, 209 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 202 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-31 16:17:02,030 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [331 Valid, 379 Invalid, 209 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 202 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-31 16:17:02,032 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 904 states. [2022-01-31 16:17:02,051 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 904 to 904. [2022-01-31 16:17:02,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 904 states, 899 states have (on average 1.3592880978865407) internal successors, (1222), 899 states have internal predecessors, (1222), 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) [2022-01-31 16:17:02,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 904 states to 904 states and 1226 transitions. [2022-01-31 16:17:02,056 INFO L78 Accepts]: Start accepts. Automaton has 904 states and 1226 transitions. Word has length 127 [2022-01-31 16:17:02,056 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 16:17:02,056 INFO L470 AbstractCegarLoop]: Abstraction has 904 states and 1226 transitions. [2022-01-31 16:17:02,056 INFO L471 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) [2022-01-31 16:17:02,056 INFO L276 IsEmpty]: Start isEmpty. Operand 904 states and 1226 transitions. [2022-01-31 16:17:02,061 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2022-01-31 16:17:02,061 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 16:17:02,062 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 16:17:02,062 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-01-31 16:17:02,062 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 16:17:02,063 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 16:17:02,063 INFO L85 PathProgramCache]: Analyzing trace with hash -149349790, now seen corresponding path program 1 times [2022-01-31 16:17:02,063 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-31 16:17:02,063 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2100696399] [2022-01-31 16:17:02,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 16:17:02,064 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 16:17:02,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 16:17:02,124 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 16:17:02,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 16:17:02,129 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 65 proven. 0 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2022-01-31 16:17:02,129 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-31 16:17:02,129 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2100696399] [2022-01-31 16:17:02,129 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2100696399] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 16:17:02,129 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 16:17:02,130 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-31 16:17:02,130 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [571798937] [2022-01-31 16:17:02,130 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 16:17:02,131 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-31 16:17:02,131 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-31 16:17:02,132 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-31 16:17:02,132 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-31 16:17:02,137 INFO L87 Difference]: Start difference. First operand 904 states and 1226 transitions. Second operand has 4 states, 4 states have (on average 22.25) internal successors, (89), 3 states have internal predecessors, (89), 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) [2022-01-31 16:17:02,322 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 16:17:02,323 INFO L93 Difference]: Finished difference Result 928 states and 1255 transitions. [2022-01-31 16:17:02,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-31 16:17:02,323 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 22.25) internal successors, (89), 3 states have internal predecessors, (89), 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 127 [2022-01-31 16:17:02,324 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 16:17:02,326 INFO L225 Difference]: With dead ends: 928 [2022-01-31 16:17:02,326 INFO L226 Difference]: Without dead ends: 928 [2022-01-31 16:17:02,327 INFO L932 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 [2022-01-31 16:17:02,329 INFO L933 BasicCegarLoop]: 228 mSDtfsCounter, 207 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 198 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 207 SdHoareTripleChecker+Valid, 235 SdHoareTripleChecker+Invalid, 201 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 198 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-31 16:17:02,330 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [207 Valid, 235 Invalid, 201 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 198 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-31 16:17:02,331 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 928 states. [2022-01-31 16:17:02,340 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 928 to 928. [2022-01-31 16:17:02,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 928 states, 923 states have (on average 1.3553629469122428) internal successors, (1251), 923 states have internal predecessors, (1251), 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) [2022-01-31 16:17:02,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 928 states to 928 states and 1255 transitions. [2022-01-31 16:17:02,344 INFO L78 Accepts]: Start accepts. Automaton has 928 states and 1255 transitions. Word has length 127 [2022-01-31 16:17:02,344 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 16:17:02,344 INFO L470 AbstractCegarLoop]: Abstraction has 928 states and 1255 transitions. [2022-01-31 16:17:02,345 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.25) internal successors, (89), 3 states have internal predecessors, (89), 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) [2022-01-31 16:17:02,345 INFO L276 IsEmpty]: Start isEmpty. Operand 928 states and 1255 transitions. [2022-01-31 16:17:02,347 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2022-01-31 16:17:02,347 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 16:17:02,347 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 16:17:02,347 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-01-31 16:17:02,347 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 16:17:02,348 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 16:17:02,348 INFO L85 PathProgramCache]: Analyzing trace with hash -718470609, now seen corresponding path program 1 times [2022-01-31 16:17:02,348 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-31 16:17:02,348 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1962368934] [2022-01-31 16:17:02,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 16:17:02,349 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 16:17:02,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 16:17:02,407 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 16:17:02,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 16:17:02,413 INFO L134 CoverageAnalysis]: Checked inductivity of 193 backedges. 155 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2022-01-31 16:17:02,413 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-31 16:17:02,413 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1962368934] [2022-01-31 16:17:02,413 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1962368934] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 16:17:02,413 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 16:17:02,414 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-31 16:17:02,414 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1152068795] [2022-01-31 16:17:02,414 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 16:17:02,414 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-31 16:17:02,414 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-31 16:17:02,415 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-31 16:17:02,415 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-31 16:17:02,415 INFO L87 Difference]: Start difference. First operand 928 states and 1255 transitions. Second operand has 4 states, 4 states have (on average 34.0) internal successors, (136), 3 states have internal predecessors, (136), 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) [2022-01-31 16:17:02,645 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 16:17:02,645 INFO L93 Difference]: Finished difference Result 1097 states and 1463 transitions. [2022-01-31 16:17:02,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-31 16:17:02,646 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 34.0) internal successors, (136), 3 states have internal predecessors, (136), 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 165 [2022-01-31 16:17:02,646 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 16:17:02,649 INFO L225 Difference]: With dead ends: 1097 [2022-01-31 16:17:02,649 INFO L226 Difference]: Without dead ends: 1097 [2022-01-31 16:17:02,650 INFO L932 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 [2022-01-31 16:17:02,650 INFO L933 BasicCegarLoop]: 211 mSDtfsCounter, 238 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 229 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 238 SdHoareTripleChecker+Valid, 218 SdHoareTripleChecker+Invalid, 266 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 229 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-31 16:17:02,650 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [238 Valid, 218 Invalid, 266 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 229 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-31 16:17:02,652 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1097 states. [2022-01-31 16:17:02,662 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1097 to 1051. [2022-01-31 16:17:02,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1051 states, 1046 states have (on average 1.3365200764818355) internal successors, (1398), 1046 states have internal predecessors, (1398), 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) [2022-01-31 16:17:02,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1051 states to 1051 states and 1402 transitions. [2022-01-31 16:17:02,666 INFO L78 Accepts]: Start accepts. Automaton has 1051 states and 1402 transitions. Word has length 165 [2022-01-31 16:17:02,666 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 16:17:02,666 INFO L470 AbstractCegarLoop]: Abstraction has 1051 states and 1402 transitions. [2022-01-31 16:17:02,667 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 34.0) internal successors, (136), 3 states have internal predecessors, (136), 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) [2022-01-31 16:17:02,667 INFO L276 IsEmpty]: Start isEmpty. Operand 1051 states and 1402 transitions. [2022-01-31 16:17:02,669 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2022-01-31 16:17:02,669 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 16:17:02,669 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 16:17:02,669 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-01-31 16:17:02,670 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 16:17:02,670 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 16:17:02,670 INFO L85 PathProgramCache]: Analyzing trace with hash 660571069, now seen corresponding path program 1 times [2022-01-31 16:17:02,670 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-31 16:17:02,670 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [975618837] [2022-01-31 16:17:02,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 16:17:02,671 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 16:17:02,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 16:17:02,734 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 16:17:02,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 16:17:02,737 INFO L134 CoverageAnalysis]: Checked inductivity of 216 backedges. 145 proven. 0 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2022-01-31 16:17:02,737 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-31 16:17:02,738 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [975618837] [2022-01-31 16:17:02,738 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [975618837] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 16:17:02,738 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 16:17:02,738 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-31 16:17:02,738 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1233123990] [2022-01-31 16:17:02,738 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 16:17:02,739 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-31 16:17:02,739 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-31 16:17:02,739 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-31 16:17:02,739 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-31 16:17:02,739 INFO L87 Difference]: Start difference. First operand 1051 states and 1402 transitions. Second operand has 4 states, 4 states have (on average 29.25) internal successors, (117), 3 states have internal predecessors, (117), 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) [2022-01-31 16:17:02,935 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 16:17:02,935 INFO L93 Difference]: Finished difference Result 1277 states and 1763 transitions. [2022-01-31 16:17:02,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-31 16:17:02,935 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 29.25) internal successors, (117), 3 states have internal predecessors, (117), 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 178 [2022-01-31 16:17:02,936 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 16:17:02,939 INFO L225 Difference]: With dead ends: 1277 [2022-01-31 16:17:02,939 INFO L226 Difference]: Without dead ends: 1273 [2022-01-31 16:17:02,940 INFO L932 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 [2022-01-31 16:17:02,940 INFO L933 BasicCegarLoop]: 212 mSDtfsCounter, 332 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 149 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 332 SdHoareTripleChecker+Valid, 219 SdHoareTripleChecker+Invalid, 209 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 149 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-31 16:17:02,940 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [332 Valid, 219 Invalid, 209 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [60 Valid, 149 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-31 16:17:02,942 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1273 states. [2022-01-31 16:17:02,955 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1273 to 1255. [2022-01-31 16:17:02,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1255 states, 1250 states have (on average 1.3896) internal successors, (1737), 1250 states have internal predecessors, (1737), 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) [2022-01-31 16:17:02,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1255 states to 1255 states and 1741 transitions. [2022-01-31 16:17:02,962 INFO L78 Accepts]: Start accepts. Automaton has 1255 states and 1741 transitions. Word has length 178 [2022-01-31 16:17:02,962 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 16:17:02,962 INFO L470 AbstractCegarLoop]: Abstraction has 1255 states and 1741 transitions. [2022-01-31 16:17:02,962 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 29.25) internal successors, (117), 3 states have internal predecessors, (117), 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) [2022-01-31 16:17:02,962 INFO L276 IsEmpty]: Start isEmpty. Operand 1255 states and 1741 transitions. [2022-01-31 16:17:02,965 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 208 [2022-01-31 16:17:02,965 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 16:17:02,965 INFO L514 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, 4, 4, 4, 4, 4, 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] [2022-01-31 16:17:02,966 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-01-31 16:17:02,966 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 16:17:02,966 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 16:17:02,966 INFO L85 PathProgramCache]: Analyzing trace with hash 1568087176, now seen corresponding path program 1 times [2022-01-31 16:17:02,967 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-31 16:17:02,967 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [458383289] [2022-01-31 16:17:02,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 16:17:02,967 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 16:17:02,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 16:17:03,023 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 16:17:03,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 16:17:03,031 INFO L134 CoverageAnalysis]: Checked inductivity of 327 backedges. 220 proven. 0 refuted. 0 times theorem prover too weak. 107 trivial. 0 not checked. [2022-01-31 16:17:03,032 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-31 16:17:03,032 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [458383289] [2022-01-31 16:17:03,032 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [458383289] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 16:17:03,032 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 16:17:03,033 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-31 16:17:03,033 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [591109588] [2022-01-31 16:17:03,033 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 16:17:03,033 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-31 16:17:03,033 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-31 16:17:03,034 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-31 16:17:03,034 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-31 16:17:03,034 INFO L87 Difference]: Start difference. First operand 1255 states and 1741 transitions. Second operand has 4 states, 4 states have (on average 34.5) internal successors, (138), 3 states have internal predecessors, (138), 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) [2022-01-31 16:17:03,252 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 16:17:03,252 INFO L93 Difference]: Finished difference Result 1379 states and 1885 transitions. [2022-01-31 16:17:03,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-31 16:17:03,252 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 34.5) internal successors, (138), 3 states have internal predecessors, (138), 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 207 [2022-01-31 16:17:03,253 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 16:17:03,256 INFO L225 Difference]: With dead ends: 1379 [2022-01-31 16:17:03,256 INFO L226 Difference]: Without dead ends: 1379 [2022-01-31 16:17:03,257 INFO L932 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 [2022-01-31 16:17:03,257 INFO L933 BasicCegarLoop]: 201 mSDtfsCounter, 220 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 212 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 220 SdHoareTripleChecker+Valid, 208 SdHoareTripleChecker+Invalid, 238 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 212 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-31 16:17:03,258 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [220 Valid, 208 Invalid, 238 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 212 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-31 16:17:03,259 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1379 states. [2022-01-31 16:17:03,274 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1379 to 1379. [2022-01-31 16:17:03,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1379 states, 1374 states have (on average 1.3689956331877728) internal successors, (1881), 1374 states have internal predecessors, (1881), 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) [2022-01-31 16:17:03,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1379 states to 1379 states and 1885 transitions. [2022-01-31 16:17:03,279 INFO L78 Accepts]: Start accepts. Automaton has 1379 states and 1885 transitions. Word has length 207 [2022-01-31 16:17:03,280 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 16:17:03,280 INFO L470 AbstractCegarLoop]: Abstraction has 1379 states and 1885 transitions. [2022-01-31 16:17:03,280 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 34.5) internal successors, (138), 3 states have internal predecessors, (138), 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) [2022-01-31 16:17:03,280 INFO L276 IsEmpty]: Start isEmpty. Operand 1379 states and 1885 transitions. [2022-01-31 16:17:03,283 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 236 [2022-01-31 16:17:03,283 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 16:17:03,284 INFO L514 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, 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] [2022-01-31 16:17:03,284 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-01-31 16:17:03,284 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 16:17:03,285 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 16:17:03,285 INFO L85 PathProgramCache]: Analyzing trace with hash 479418076, now seen corresponding path program 1 times [2022-01-31 16:17:03,285 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-31 16:17:03,285 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [621059845] [2022-01-31 16:17:03,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 16:17:03,285 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 16:17:03,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 16:17:03,330 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 16:17:03,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 16:17:03,334 INFO L134 CoverageAnalysis]: Checked inductivity of 458 backedges. 160 proven. 0 refuted. 0 times theorem prover too weak. 298 trivial. 0 not checked. [2022-01-31 16:17:03,334 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-31 16:17:03,334 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [621059845] [2022-01-31 16:17:03,334 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [621059845] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 16:17:03,334 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 16:17:03,334 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-31 16:17:03,334 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [42664777] [2022-01-31 16:17:03,334 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 16:17:03,335 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-31 16:17:03,335 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-31 16:17:03,335 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-31 16:17:03,335 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-31 16:17:03,336 INFO L87 Difference]: Start difference. First operand 1379 states and 1885 transitions. Second operand has 4 states, 4 states have (on average 28.75) internal successors, (115), 3 states have internal predecessors, (115), 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) [2022-01-31 16:17:03,575 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 16:17:03,575 INFO L93 Difference]: Finished difference Result 1547 states and 2069 transitions. [2022-01-31 16:17:03,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-31 16:17:03,576 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 28.75) internal successors, (115), 3 states have internal predecessors, (115), 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 235 [2022-01-31 16:17:03,576 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 16:17:03,580 INFO L225 Difference]: With dead ends: 1547 [2022-01-31 16:17:03,580 INFO L226 Difference]: Without dead ends: 1372 [2022-01-31 16:17:03,580 INFO L932 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 [2022-01-31 16:17:03,581 INFO L933 BasicCegarLoop]: 213 mSDtfsCounter, 206 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 231 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 206 SdHoareTripleChecker+Valid, 220 SdHoareTripleChecker+Invalid, 264 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 231 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-31 16:17:03,581 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [206 Valid, 220 Invalid, 264 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 231 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-31 16:17:03,582 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1372 states. [2022-01-31 16:17:03,598 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1372 to 1372. [2022-01-31 16:17:03,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1372 states, 1367 states have (on average 1.3628383321141184) internal successors, (1863), 1367 states have internal predecessors, (1863), 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) [2022-01-31 16:17:03,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1372 states to 1372 states and 1867 transitions. [2022-01-31 16:17:03,627 INFO L78 Accepts]: Start accepts. Automaton has 1372 states and 1867 transitions. Word has length 235 [2022-01-31 16:17:03,627 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 16:17:03,627 INFO L470 AbstractCegarLoop]: Abstraction has 1372 states and 1867 transitions. [2022-01-31 16:17:03,627 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 28.75) internal successors, (115), 3 states have internal predecessors, (115), 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) [2022-01-31 16:17:03,628 INFO L276 IsEmpty]: Start isEmpty. Operand 1372 states and 1867 transitions. [2022-01-31 16:17:03,631 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 276 [2022-01-31 16:17:03,632 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 16:17:03,632 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 4, 4, 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] [2022-01-31 16:17:03,632 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-01-31 16:17:03,632 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 16:17:03,633 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 16:17:03,633 INFO L85 PathProgramCache]: Analyzing trace with hash 1347257741, now seen corresponding path program 1 times [2022-01-31 16:17:03,633 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-31 16:17:03,633 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1615515191] [2022-01-31 16:17:03,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 16:17:03,633 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 16:17:03,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 16:17:03,702 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 16:17:03,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 16:17:03,706 INFO L134 CoverageAnalysis]: Checked inductivity of 654 backedges. 429 proven. 0 refuted. 0 times theorem prover too weak. 225 trivial. 0 not checked. [2022-01-31 16:17:03,706 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-31 16:17:03,706 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1615515191] [2022-01-31 16:17:03,706 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1615515191] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 16:17:03,706 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 16:17:03,706 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-31 16:17:03,706 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1234358620] [2022-01-31 16:17:03,707 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 16:17:03,707 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-31 16:17:03,707 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-31 16:17:03,707 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-31 16:17:03,708 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-31 16:17:03,708 INFO L87 Difference]: Start difference. First operand 1372 states and 1867 transitions. Second operand has 4 states, 4 states have (on average 34.0) internal successors, (136), 3 states have internal predecessors, (136), 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) [2022-01-31 16:17:03,903 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 16:17:03,903 INFO L93 Difference]: Finished difference Result 2587 states and 3537 transitions. [2022-01-31 16:17:03,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-31 16:17:03,903 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 34.0) internal successors, (136), 3 states have internal predecessors, (136), 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 275 [2022-01-31 16:17:03,904 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 16:17:03,909 INFO L225 Difference]: With dead ends: 2587 [2022-01-31 16:17:03,909 INFO L226 Difference]: Without dead ends: 1651 [2022-01-31 16:17:03,909 INFO L932 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 [2022-01-31 16:17:03,909 INFO L933 BasicCegarLoop]: 370 mSDtfsCounter, 317 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 195 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 317 SdHoareTripleChecker+Valid, 377 SdHoareTripleChecker+Invalid, 200 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 195 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-31 16:17:03,910 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [317 Valid, 377 Invalid, 200 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 195 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-31 16:17:03,911 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1651 states. [2022-01-31 16:17:03,932 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1651 to 1649. [2022-01-31 16:17:03,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1649 states, 1644 states have (on average 1.3637469586374695) internal successors, (2242), 1644 states have internal predecessors, (2242), 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) [2022-01-31 16:17:03,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1649 states to 1649 states and 2246 transitions. [2022-01-31 16:17:03,939 INFO L78 Accepts]: Start accepts. Automaton has 1649 states and 2246 transitions. Word has length 275 [2022-01-31 16:17:03,939 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 16:17:03,939 INFO L470 AbstractCegarLoop]: Abstraction has 1649 states and 2246 transitions. [2022-01-31 16:17:03,939 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 34.0) internal successors, (136), 3 states have internal predecessors, (136), 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) [2022-01-31 16:17:03,939 INFO L276 IsEmpty]: Start isEmpty. Operand 1649 states and 2246 transitions. [2022-01-31 16:17:03,943 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 323 [2022-01-31 16:17:03,943 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 16:17:03,944 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 8, 8, 7, 7, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 4, 4, 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] [2022-01-31 16:17:03,944 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-01-31 16:17:03,944 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 16:17:03,944 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 16:17:03,945 INFO L85 PathProgramCache]: Analyzing trace with hash -2113328964, now seen corresponding path program 1 times [2022-01-31 16:17:03,945 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-31 16:17:03,945 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [485408550] [2022-01-31 16:17:03,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 16:17:03,945 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 16:17:03,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 16:17:03,990 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 16:17:03,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 16:17:03,994 INFO L134 CoverageAnalysis]: Checked inductivity of 954 backedges. 500 proven. 0 refuted. 0 times theorem prover too weak. 454 trivial. 0 not checked. [2022-01-31 16:17:03,994 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-31 16:17:03,994 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [485408550] [2022-01-31 16:17:03,994 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [485408550] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 16:17:03,994 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 16:17:03,994 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-31 16:17:03,994 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [800705642] [2022-01-31 16:17:03,995 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 16:17:03,995 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-31 16:17:03,995 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-31 16:17:03,995 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-31 16:17:03,996 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-31 16:17:03,996 INFO L87 Difference]: Start difference. First operand 1649 states and 2246 transitions. Second operand has 4 states, 4 states have (on average 32.5) internal successors, (130), 3 states have internal predecessors, (130), 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) [2022-01-31 16:17:04,212 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 16:17:04,213 INFO L93 Difference]: Finished difference Result 1824 states and 2471 transitions. [2022-01-31 16:17:04,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-31 16:17:04,213 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 32.5) internal successors, (130), 3 states have internal predecessors, (130), 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 322 [2022-01-31 16:17:04,213 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 16:17:04,218 INFO L225 Difference]: With dead ends: 1824 [2022-01-31 16:17:04,218 INFO L226 Difference]: Without dead ends: 1824 [2022-01-31 16:17:04,219 INFO L932 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 [2022-01-31 16:17:04,219 INFO L933 BasicCegarLoop]: 210 mSDtfsCounter, 224 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 214 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 224 SdHoareTripleChecker+Valid, 217 SdHoareTripleChecker+Invalid, 231 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 214 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-31 16:17:04,219 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [224 Valid, 217 Invalid, 231 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 214 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-31 16:17:04,221 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1824 states. [2022-01-31 16:17:04,239 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1824 to 1784. [2022-01-31 16:17:04,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1784 states, 1779 states have (on average 1.3501967397414278) internal successors, (2402), 1779 states have internal predecessors, (2402), 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) [2022-01-31 16:17:04,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1784 states to 1784 states and 2406 transitions. [2022-01-31 16:17:04,246 INFO L78 Accepts]: Start accepts. Automaton has 1784 states and 2406 transitions. Word has length 322 [2022-01-31 16:17:04,246 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 16:17:04,247 INFO L470 AbstractCegarLoop]: Abstraction has 1784 states and 2406 transitions. [2022-01-31 16:17:04,247 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 32.5) internal successors, (130), 3 states have internal predecessors, (130), 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) [2022-01-31 16:17:04,247 INFO L276 IsEmpty]: Start isEmpty. Operand 1784 states and 2406 transitions. [2022-01-31 16:17:04,251 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 346 [2022-01-31 16:17:04,251 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 16:17:04,252 INFO L514 BasicCegarLoop]: trace histogram [11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 10, 10, 10, 10, 10, 9, 9, 8, 8, 7, 7, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 4, 4, 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] [2022-01-31 16:17:04,252 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-01-31 16:17:04,252 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 16:17:04,252 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 16:17:04,252 INFO L85 PathProgramCache]: Analyzing trace with hash 1283305930, now seen corresponding path program 1 times [2022-01-31 16:17:04,252 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-31 16:17:04,253 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [360405170] [2022-01-31 16:17:04,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 16:17:04,253 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 16:17:04,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 16:17:04,302 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 16:17:04,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 16:17:04,305 INFO L134 CoverageAnalysis]: Checked inductivity of 1151 backedges. 642 proven. 0 refuted. 0 times theorem prover too weak. 509 trivial. 0 not checked. [2022-01-31 16:17:04,305 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-31 16:17:04,305 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [360405170] [2022-01-31 16:17:04,305 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [360405170] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 16:17:04,305 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 16:17:04,306 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-31 16:17:04,306 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1156092853] [2022-01-31 16:17:04,306 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 16:17:04,306 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-31 16:17:04,306 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-31 16:17:04,307 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-31 16:17:04,307 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-31 16:17:04,307 INFO L87 Difference]: Start difference. First operand 1784 states and 2406 transitions. Second operand has 4 states, 4 states have (on average 34.0) internal successors, (136), 3 states have internal predecessors, (136), 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) [2022-01-31 16:17:04,520 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 16:17:04,520 INFO L93 Difference]: Finished difference Result 1939 states and 2586 transitions. [2022-01-31 16:17:04,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-31 16:17:04,521 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 34.0) internal successors, (136), 3 states have internal predecessors, (136), 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 [2022-01-31 16:17:04,521 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 16:17:04,526 INFO L225 Difference]: With dead ends: 1939 [2022-01-31 16:17:04,526 INFO L226 Difference]: Without dead ends: 1939 [2022-01-31 16:17:04,528 INFO L932 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 [2022-01-31 16:17:04,529 INFO L933 BasicCegarLoop]: 210 mSDtfsCounter, 205 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 214 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 205 SdHoareTripleChecker+Valid, 217 SdHoareTripleChecker+Invalid, 235 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 214 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-31 16:17:04,529 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [205 Valid, 217 Invalid, 235 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 214 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-31 16:17:04,530 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1939 states. [2022-01-31 16:17:04,573 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1939 to 1929. [2022-01-31 16:17:04,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1929 states, 1924 states have (on average 1.3367983367983367) internal successors, (2572), 1924 states have internal predecessors, (2572), 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) [2022-01-31 16:17:04,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1929 states to 1929 states and 2576 transitions. [2022-01-31 16:17:04,581 INFO L78 Accepts]: Start accepts. Automaton has 1929 states and 2576 transitions. Word has length 345 [2022-01-31 16:17:04,581 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 16:17:04,581 INFO L470 AbstractCegarLoop]: Abstraction has 1929 states and 2576 transitions. [2022-01-31 16:17:04,581 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 34.0) internal successors, (136), 3 states have internal predecessors, (136), 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) [2022-01-31 16:17:04,581 INFO L276 IsEmpty]: Start isEmpty. Operand 1929 states and 2576 transitions. [2022-01-31 16:17:04,587 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 379 [2022-01-31 16:17:04,587 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 16:17:04,587 INFO L514 BasicCegarLoop]: trace histogram [12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 11, 11, 11, 11, 11, 10, 10, 9, 9, 8, 8, 7, 7, 7, 7, 5, 5, 5, 5, 5, 5, 5, 4, 4, 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] [2022-01-31 16:17:04,587 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-01-31 16:17:04,587 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 16:17:04,588 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 16:17:04,588 INFO L85 PathProgramCache]: Analyzing trace with hash -1675230557, now seen corresponding path program 1 times [2022-01-31 16:17:04,588 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-31 16:17:04,588 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [837718992] [2022-01-31 16:17:04,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 16:17:04,588 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 16:17:04,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 16:17:04,650 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 16:17:04,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 16:17:04,654 INFO L134 CoverageAnalysis]: Checked inductivity of 1396 backedges. 905 proven. 26 refuted. 0 times theorem prover too weak. 465 trivial. 0 not checked. [2022-01-31 16:17:04,654 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-31 16:17:04,654 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [837718992] [2022-01-31 16:17:04,654 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [837718992] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-31 16:17:04,654 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [773298140] [2022-01-31 16:17:04,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 16:17:04,654 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-31 16:17:04,655 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-31 16:17:04,656 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) [2022-01-31 16:17:04,698 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-01-31 16:17:04,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 16:17:04,827 INFO L263 TraceCheckSpWp]: Trace formula consists of 689 conjuncts, 3 conjunts are in the unsatisfiable core [2022-01-31 16:17:04,841 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-31 16:17:05,541 INFO L134 CoverageAnalysis]: Checked inductivity of 1396 backedges. 905 proven. 26 refuted. 0 times theorem prover too weak. 465 trivial. 0 not checked. [2022-01-31 16:17:05,541 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-31 16:17:06,092 INFO L134 CoverageAnalysis]: Checked inductivity of 1396 backedges. 905 proven. 26 refuted. 0 times theorem prover too weak. 465 trivial. 0 not checked. [2022-01-31 16:17:06,092 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [773298140] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-31 16:17:06,093 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-31 16:17:06,093 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4, 4] total 7 [2022-01-31 16:17:06,093 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [480568312] [2022-01-31 16:17:06,093 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-31 16:17:06,094 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-31 16:17:06,094 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-31 16:17:06,094 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-31 16:17:06,094 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-01-31 16:17:06,095 INFO L87 Difference]: Start difference. First operand 1929 states and 2576 transitions. Second operand has 7 states, 7 states have (on average 35.0) internal successors, (245), 6 states have internal predecessors, (245), 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) [2022-01-31 16:17:07,039 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 16:17:07,039 INFO L93 Difference]: Finished difference Result 3077 states and 4060 transitions. [2022-01-31 16:17:07,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-01-31 16:17:07,040 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 35.0) internal successors, (245), 6 states have internal predecessors, (245), 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 378 [2022-01-31 16:17:07,040 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 16:17:07,048 INFO L225 Difference]: With dead ends: 3077 [2022-01-31 16:17:07,049 INFO L226 Difference]: Without dead ends: 2921 [2022-01-31 16:17:07,049 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 777 GetRequests, 764 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=74, Invalid=136, Unknown=0, NotChecked=0, Total=210 [2022-01-31 16:17:07,049 INFO L933 BasicCegarLoop]: 301 mSDtfsCounter, 702 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 1195 mSolverCounterSat, 82 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 702 SdHoareTripleChecker+Valid, 323 SdHoareTripleChecker+Invalid, 1277 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 82 IncrementalHoareTripleChecker+Valid, 1195 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-01-31 16:17:07,050 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [702 Valid, 323 Invalid, 1277 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [82 Valid, 1195 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-01-31 16:17:07,053 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2921 states. [2022-01-31 16:17:07,078 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2921 to 2067. [2022-01-31 16:17:07,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2067 states, 2062 states have (on average 1.3423860329776915) internal successors, (2768), 2062 states have internal predecessors, (2768), 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) [2022-01-31 16:17:07,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2067 states to 2067 states and 2772 transitions. [2022-01-31 16:17:07,086 INFO L78 Accepts]: Start accepts. Automaton has 2067 states and 2772 transitions. Word has length 378 [2022-01-31 16:17:07,086 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 16:17:07,086 INFO L470 AbstractCegarLoop]: Abstraction has 2067 states and 2772 transitions. [2022-01-31 16:17:07,086 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 35.0) internal successors, (245), 6 states have internal predecessors, (245), 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) [2022-01-31 16:17:07,086 INFO L276 IsEmpty]: Start isEmpty. Operand 2067 states and 2772 transitions. [2022-01-31 16:17:07,093 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 479 [2022-01-31 16:17:07,093 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 16:17:07,094 INFO L514 BasicCegarLoop]: trace histogram [15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 14, 14, 14, 14, 14, 13, 13, 12, 12, 11, 11, 10, 10, 10, 10, 8, 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, 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] [2022-01-31 16:17:07,120 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-01-31 16:17:07,315 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-01-31 16:17:07,315 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 16:17:07,316 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 16:17:07,316 INFO L85 PathProgramCache]: Analyzing trace with hash 1906514014, now seen corresponding path program 1 times [2022-01-31 16:17:07,316 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-31 16:17:07,316 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [100875484] [2022-01-31 16:17:07,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 16:17:07,317 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 16:17:07,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 16:17:07,390 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 16:17:07,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 16:17:07,396 INFO L134 CoverageAnalysis]: Checked inductivity of 2338 backedges. 1323 proven. 0 refuted. 0 times theorem prover too weak. 1015 trivial. 0 not checked. [2022-01-31 16:17:07,397 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-31 16:17:07,397 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [100875484] [2022-01-31 16:17:07,397 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [100875484] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 16:17:07,397 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 16:17:07,397 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-31 16:17:07,397 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [704497374] [2022-01-31 16:17:07,397 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 16:17:07,398 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-31 16:17:07,398 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-31 16:17:07,398 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-31 16:17:07,399 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-31 16:17:07,399 INFO L87 Difference]: Start difference. First operand 2067 states and 2772 transitions. Second operand has 4 states, 4 states have (on average 41.25) internal successors, (165), 3 states have internal predecessors, (165), 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) [2022-01-31 16:17:07,639 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 16:17:07,639 INFO L93 Difference]: Finished difference Result 2319 states and 3059 transitions. [2022-01-31 16:17:07,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-31 16:17:07,640 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 41.25) internal successors, (165), 3 states have internal predecessors, (165), 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 478 [2022-01-31 16:17:07,640 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 16:17:07,646 INFO L225 Difference]: With dead ends: 2319 [2022-01-31 16:17:07,646 INFO L226 Difference]: Without dead ends: 2319 [2022-01-31 16:17:07,647 INFO L932 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 [2022-01-31 16:17:07,647 INFO L933 BasicCegarLoop]: 210 mSDtfsCounter, 205 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 221 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 205 SdHoareTripleChecker+Valid, 217 SdHoareTripleChecker+Invalid, 245 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 221 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-31 16:17:07,647 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [205 Valid, 217 Invalid, 245 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 221 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-31 16:17:07,649 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2319 states. [2022-01-31 16:17:07,681 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2319 to 2305. [2022-01-31 16:17:07,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2305 states, 2300 states have (on average 1.3221739130434782) internal successors, (3041), 2300 states have internal predecessors, (3041), 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) [2022-01-31 16:17:07,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2305 states to 2305 states and 3045 transitions. [2022-01-31 16:17:07,687 INFO L78 Accepts]: Start accepts. Automaton has 2305 states and 3045 transitions. Word has length 478 [2022-01-31 16:17:07,687 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 16:17:07,688 INFO L470 AbstractCegarLoop]: Abstraction has 2305 states and 3045 transitions. [2022-01-31 16:17:07,688 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 41.25) internal successors, (165), 3 states have internal predecessors, (165), 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) [2022-01-31 16:17:07,688 INFO L276 IsEmpty]: Start isEmpty. Operand 2305 states and 3045 transitions. [2022-01-31 16:17:07,698 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 541 [2022-01-31 16:17:07,698 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 16:17:07,698 INFO L514 BasicCegarLoop]: trace histogram [17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 16, 16, 16, 16, 16, 15, 15, 14, 14, 13, 13, 12, 12, 12, 12, 10, 8, 8, 6, 6, 6, 6, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 16:17:07,699 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-01-31 16:17:07,699 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 16:17:07,699 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 16:17:07,699 INFO L85 PathProgramCache]: Analyzing trace with hash 1365116496, now seen corresponding path program 1 times [2022-01-31 16:17:07,699 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-31 16:17:07,700 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1552059080] [2022-01-31 16:17:07,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 16:17:07,700 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 16:17:07,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 16:17:07,824 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 16:17:07,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 16:17:07,828 INFO L134 CoverageAnalysis]: Checked inductivity of 3103 backedges. 1760 proven. 0 refuted. 0 times theorem prover too weak. 1343 trivial. 0 not checked. [2022-01-31 16:17:07,828 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-31 16:17:07,828 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1552059080] [2022-01-31 16:17:07,828 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1552059080] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 16:17:07,828 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 16:17:07,829 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-31 16:17:07,829 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [189050637] [2022-01-31 16:17:07,829 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 16:17:07,829 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-31 16:17:07,829 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-31 16:17:07,830 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-31 16:17:07,830 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-31 16:17:07,830 INFO L87 Difference]: Start difference. First operand 2305 states and 3045 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) [2022-01-31 16:17:08,043 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 16:17:08,044 INFO L93 Difference]: Finished difference Result 2571 states and 3346 transitions. [2022-01-31 16:17:08,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-31 16:17:08,044 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 540 [2022-01-31 16:17:08,045 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 16:17:08,052 INFO L225 Difference]: With dead ends: 2571 [2022-01-31 16:17:08,052 INFO L226 Difference]: Without dead ends: 2571 [2022-01-31 16:17:08,052 INFO L932 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 [2022-01-31 16:17:08,052 INFO L933 BasicCegarLoop]: 210 mSDtfsCounter, 205 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 223 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 205 SdHoareTripleChecker+Valid, 217 SdHoareTripleChecker+Invalid, 249 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 223 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-31 16:17:08,053 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [205 Valid, 217 Invalid, 249 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 223 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-31 16:17:08,054 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2571 states. [2022-01-31 16:17:08,082 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2571 to 2557. [2022-01-31 16:17:08,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2557 states, 2552 states have (on average 1.3040752351097178) internal successors, (3328), 2552 states have internal predecessors, (3328), 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) [2022-01-31 16:17:08,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2557 states to 2557 states and 3332 transitions. [2022-01-31 16:17:08,089 INFO L78 Accepts]: Start accepts. Automaton has 2557 states and 3332 transitions. Word has length 540 [2022-01-31 16:17:08,090 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 16:17:08,090 INFO L470 AbstractCegarLoop]: Abstraction has 2557 states and 3332 transitions. [2022-01-31 16:17:08,090 INFO L471 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) [2022-01-31 16:17:08,090 INFO L276 IsEmpty]: Start isEmpty. Operand 2557 states and 3332 transitions. [2022-01-31 16:17:08,102 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 607 [2022-01-31 16:17:08,102 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 16:17:08,102 INFO L514 BasicCegarLoop]: trace histogram [19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 18, 18, 18, 18, 18, 17, 17, 16, 16, 15, 15, 14, 14, 14, 14, 12, 10, 10, 8, 8, 6, 6, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 16:17:08,102 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-01-31 16:17:08,103 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 16:17:08,103 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 16:17:08,103 INFO L85 PathProgramCache]: Analyzing trace with hash 325131742, now seen corresponding path program 1 times [2022-01-31 16:17:08,103 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-31 16:17:08,103 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1580265804] [2022-01-31 16:17:08,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 16:17:08,104 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 16:17:08,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 16:17:08,226 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 16:17:08,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 16:17:08,230 INFO L134 CoverageAnalysis]: Checked inductivity of 4010 backedges. 2316 proven. 26 refuted. 0 times theorem prover too weak. 1668 trivial. 0 not checked. [2022-01-31 16:17:08,231 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-31 16:17:08,231 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1580265804] [2022-01-31 16:17:08,231 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1580265804] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-31 16:17:08,231 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [512733595] [2022-01-31 16:17:08,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 16:17:08,231 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-31 16:17:08,231 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-31 16:17:08,236 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) [2022-01-31 16:17:08,263 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-01-31 16:17:08,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 16:17:08,425 INFO L263 TraceCheckSpWp]: Trace formula consists of 995 conjuncts, 3 conjunts are in the unsatisfiable core [2022-01-31 16:17:08,433 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-31 16:17:09,188 INFO L134 CoverageAnalysis]: Checked inductivity of 4010 backedges. 2316 proven. 26 refuted. 0 times theorem prover too weak. 1668 trivial. 0 not checked. [2022-01-31 16:17:09,188 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-31 16:17:09,967 INFO L134 CoverageAnalysis]: Checked inductivity of 4010 backedges. 2316 proven. 26 refuted. 0 times theorem prover too weak. 1668 trivial. 0 not checked. [2022-01-31 16:17:09,967 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [512733595] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-31 16:17:09,967 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-31 16:17:09,967 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4, 4] total 9 [2022-01-31 16:17:09,967 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [563379691] [2022-01-31 16:17:09,968 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-31 16:17:09,968 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-01-31 16:17:09,969 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-31 16:17:09,969 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-01-31 16:17:09,969 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2022-01-31 16:17:09,969 INFO L87 Difference]: Start difference. First operand 2557 states and 3332 transitions. Second operand has 9 states, 9 states have (on average 37.333333333333336) internal successors, (336), 8 states have internal predecessors, (336), 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) [2022-01-31 16:17:10,641 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 16:17:10,641 INFO L93 Difference]: Finished difference Result 1808 states and 2361 transitions. [2022-01-31 16:17:10,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-31 16:17:10,642 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 37.333333333333336) internal successors, (336), 8 states have internal predecessors, (336), 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 606 [2022-01-31 16:17:10,643 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 16:17:10,643 INFO L225 Difference]: With dead ends: 1808 [2022-01-31 16:17:10,643 INFO L226 Difference]: Without dead ends: 0 [2022-01-31 16:17:10,643 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1225 GetRequests, 1214 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=52, Invalid=104, Unknown=0, NotChecked=0, Total=156 [2022-01-31 16:17:10,643 INFO L933 BasicCegarLoop]: 296 mSDtfsCounter, 408 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 1080 mSolverCounterSat, 63 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 408 SdHoareTripleChecker+Valid, 313 SdHoareTripleChecker+Invalid, 1143 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 63 IncrementalHoareTripleChecker+Valid, 1080 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-01-31 16:17:10,644 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [408 Valid, 313 Invalid, 1143 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [63 Valid, 1080 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-01-31 16:17:10,644 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-01-31 16:17:10,644 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-01-31 16:17:10,644 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) [2022-01-31 16:17:10,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-01-31 16:17:10,644 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 606 [2022-01-31 16:17:10,645 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 16:17:10,645 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-01-31 16:17:10,645 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 37.333333333333336) internal successors, (336), 8 states have internal predecessors, (336), 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) [2022-01-31 16:17:10,645 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-01-31 16:17:10,645 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-01-31 16:17:10,647 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-01-31 16:17:10,674 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-01-31 16:17:10,848 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-31 16:17:10,851 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 16:17:10,852 INFO L180 ceAbstractionStarter]: Computing trace abstraction results [2022-01-31 16:17:10,854 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 31.01 04:17:10 BasicIcfg [2022-01-31 16:17:10,854 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-01-31 16:17:10,855 INFO L158 Benchmark]: Toolchain (without parser) took 12519.17ms. Allocated memory was 188.7MB in the beginning and 362.8MB in the end (delta: 174.1MB). Free memory was 133.9MB in the beginning and 189.3MB in the end (delta: -55.3MB). Peak memory consumption was 119.3MB. Max. memory is 8.0GB. [2022-01-31 16:17:10,855 INFO L158 Benchmark]: CDTParser took 0.11ms. Allocated memory is still 188.7MB. Free memory is still 150.6MB. There was no memory consumed. Max. memory is 8.0GB. [2022-01-31 16:17:10,856 INFO L158 Benchmark]: CACSL2BoogieTranslator took 346.92ms. Allocated memory was 188.7MB in the beginning and 238.0MB in the end (delta: 49.3MB). Free memory was 133.7MB in the beginning and 206.2MB in the end (delta: -72.5MB). Peak memory consumption was 10.1MB. Max. memory is 8.0GB. [2022-01-31 16:17:10,856 INFO L158 Benchmark]: Boogie Preprocessor took 38.11ms. Allocated memory is still 238.0MB. Free memory was 206.2MB in the beginning and 203.6MB in the end (delta: 2.6MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. [2022-01-31 16:17:10,857 INFO L158 Benchmark]: RCFGBuilder took 560.01ms. Allocated memory is still 238.0MB. Free memory was 203.6MB in the beginning and 176.3MB in the end (delta: 27.3MB). Peak memory consumption was 27.3MB. Max. memory is 8.0GB. [2022-01-31 16:17:10,857 INFO L158 Benchmark]: IcfgTransformer took 30.68ms. Allocated memory is still 238.0MB. Free memory was 176.3MB in the beginning and 172.7MB in the end (delta: 3.7MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. [2022-01-31 16:17:10,857 INFO L158 Benchmark]: TraceAbstraction took 11538.63ms. Allocated memory was 238.0MB in the beginning and 362.8MB in the end (delta: 124.8MB). Free memory was 172.7MB in the beginning and 189.3MB in the end (delta: -16.6MB). Peak memory consumption was 109.4MB. Max. memory is 8.0GB. [2022-01-31 16:17:10,861 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11ms. Allocated memory is still 188.7MB. Free memory is still 150.6MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 346.92ms. Allocated memory was 188.7MB in the beginning and 238.0MB in the end (delta: 49.3MB). Free memory was 133.7MB in the beginning and 206.2MB in the end (delta: -72.5MB). Peak memory consumption was 10.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 38.11ms. Allocated memory is still 238.0MB. Free memory was 206.2MB in the beginning and 203.6MB in the end (delta: 2.6MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. * RCFGBuilder took 560.01ms. Allocated memory is still 238.0MB. Free memory was 203.6MB in the beginning and 176.3MB in the end (delta: 27.3MB). Peak memory consumption was 27.3MB. Max. memory is 8.0GB. * IcfgTransformer took 30.68ms. Allocated memory is still 238.0MB. Free memory was 176.3MB in the beginning and 172.7MB in the end (delta: 3.7MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. * TraceAbstraction took 11538.63ms. Allocated memory was 238.0MB in the beginning and 362.8MB in the end (delta: 124.8MB). Free memory was 172.7MB in the beginning and 189.3MB in the end (delta: -16.6MB). Peak memory consumption was 109.4MB. 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: 618]: 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, 150 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 11.5s, OverallIterations: 19, TraceHistogramMax: 19, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.1s, AutomataDifference: 5.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 5657 SdHoareTripleChecker+Valid, 4.9s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 5655 mSDsluCounter, 4867 SdHoareTripleChecker+Invalid, 4.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 160 mSDsCounter, 504 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 5869 IncrementalHoareTripleChecker+Invalid, 6373 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 504 mSolverCounterUnsat, 4707 mSDtfsCounter, 5869 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 2120 GetRequests, 2045 SyntacticMatches, 0 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=2557occurred in iteration=18, InterpolantAutomatonStates: 86, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.5s AutomataMinimizationTime, 19 MinimizatonAttempts, 1048 StatesRemovedByMinimization, 12 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 3.8s InterpolantComputationTime, 5492 NumberOfCodeBlocks, 5492 NumberOfCodeBlocksAsserted, 21 NumberOfCheckSat, 6453 ConstructedInterpolants, 0 QuantifiedInterpolants, 9127 SizeOfPredicates, 2 NumberOfNonLiveVariables, 1684 ConjunctsInSsa, 6 ConjunctsInUnsatCore, 23 InterpolantComputations, 17 PerfectInterpolantSequences, 25926/26082 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! [2022-01-31 16:17:10,895 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...