/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_4.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-b030c9e [2022-03-20 07:28:24,622 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-03-20 07:28:24,629 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-03-20 07:28:24,673 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-03-20 07:28:24,673 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-03-20 07:28:24,674 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-03-20 07:28:24,677 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-03-20 07:28:24,679 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-03-20 07:28:24,680 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-03-20 07:28:24,684 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-03-20 07:28:24,685 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-03-20 07:28:24,686 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-03-20 07:28:24,686 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-03-20 07:28:24,688 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-03-20 07:28:24,689 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-03-20 07:28:24,691 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-03-20 07:28:24,692 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-03-20 07:28:24,692 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-03-20 07:28:24,694 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-03-20 07:28:24,699 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-03-20 07:28:24,701 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-03-20 07:28:24,704 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-03-20 07:28:24,704 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-03-20 07:28:24,705 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-03-20 07:28:24,706 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-03-20 07:28:24,712 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-03-20 07:28:24,715 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-03-20 07:28:24,717 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-03-20 07:28:24,717 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-03-20 07:28:24,717 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-03-20 07:28:24,718 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-03-20 07:28:24,718 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-03-20 07:28:24,719 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-03-20 07:28:24,719 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-03-20 07:28:24,719 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-03-20 07:28:24,720 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-03-20 07:28:24,721 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-03-20 07:28:24,722 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/LoopAccelerationJordanC.epf [2022-03-20 07:28:24,735 INFO L113 SettingsManager]: Loading preferences was successful [2022-03-20 07:28:24,736 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-03-20 07:28:24,738 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-03-20 07:28:24,738 INFO L138 SettingsManager]: * sizeof long=4 [2022-03-20 07:28:24,738 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-03-20 07:28:24,738 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-03-20 07:28:24,739 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-03-20 07:28:24,739 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-03-20 07:28:24,739 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-03-20 07:28:24,740 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-03-20 07:28:24,740 INFO L138 SettingsManager]: * sizeof long double=12 [2022-03-20 07:28:24,740 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-03-20 07:28:24,740 INFO L138 SettingsManager]: * Use constant arrays=true [2022-03-20 07:28:24,740 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-03-20 07:28:24,740 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-03-20 07:28:24,740 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-03-20 07:28:24,740 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-03-20 07:28:24,741 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-03-20 07:28:24,741 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-03-20 07:28:24,741 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-03-20 07:28:24,741 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-03-20 07:28:24,742 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-03-20 07:28:24,742 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-03-20 07:28:24,968 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-03-20 07:28:24,993 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-03-20 07:28:24,995 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-03-20 07:28:24,996 INFO L271 PluginConnector]: Initializing CDTParser... [2022-03-20 07:28:24,996 INFO L275 PluginConnector]: CDTParser initialized [2022-03-20 07:28:24,997 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/openssl-simplified/s3_srvr_4.cil.c [2022-03-20 07:28:25,049 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6e6fe0a02/36387d9498cf436b97386bf561026919/FLAG688c369ba [2022-03-20 07:28:25,445 INFO L306 CDTParser]: Found 1 translation units. [2022-03-20 07:28:25,445 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/openssl-simplified/s3_srvr_4.cil.c [2022-03-20 07:28:25,453 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6e6fe0a02/36387d9498cf436b97386bf561026919/FLAG688c369ba [2022-03-20 07:28:25,463 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6e6fe0a02/36387d9498cf436b97386bf561026919 [2022-03-20 07:28:25,465 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-03-20 07:28:25,466 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-03-20 07:28:25,467 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-03-20 07:28:25,467 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-03-20 07:28:25,476 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-03-20 07:28:25,476 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.03 07:28:25" (1/1) ... [2022-03-20 07:28:25,477 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@428bf397 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 07:28:25, skipping insertion in model container [2022-03-20 07:28:25,477 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.03 07:28:25" (1/1) ... [2022-03-20 07:28:25,483 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-03-20 07:28:25,531 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-03-20 07:28:25,764 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_4.cil.c[42875,42888] [2022-03-20 07:28:25,782 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-03-20 07:28:25,788 INFO L203 MainTranslator]: Completed pre-run [2022-03-20 07:28:25,846 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_4.cil.c[42875,42888] [2022-03-20 07:28:25,853 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-03-20 07:28:25,863 INFO L208 MainTranslator]: Completed translation [2022-03-20 07:28:25,864 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 07:28:25 WrapperNode [2022-03-20 07:28:25,864 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-03-20 07:28:25,865 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-03-20 07:28:25,865 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-03-20 07:28:25,865 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-03-20 07:28:25,874 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 07:28:25" (1/1) ... [2022-03-20 07:28:25,874 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 07:28:25" (1/1) ... [2022-03-20 07:28:25,881 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 07:28:25" (1/1) ... [2022-03-20 07:28:25,881 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 07:28:25" (1/1) ... [2022-03-20 07:28:25,890 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 07:28:25" (1/1) ... [2022-03-20 07:28:25,897 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 07:28:25" (1/1) ... [2022-03-20 07:28:25,899 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 07:28:25" (1/1) ... [2022-03-20 07:28:25,902 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-03-20 07:28:25,902 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-03-20 07:28:25,903 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-03-20 07:28:25,903 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-03-20 07:28:25,919 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 07:28:25" (1/1) ... [2022-03-20 07:28:25,925 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-03-20 07:28:25,935 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-20 07:28:25,956 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) [2022-03-20 07:28:25,964 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 [2022-03-20 07:28:25,992 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2022-03-20 07:28:25,992 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-03-20 07:28:25,992 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2022-03-20 07:28:25,992 INFO L138 BoogieDeclarations]: Found implementation of procedure ssl3_accept [2022-03-20 07:28:25,992 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2022-03-20 07:28:25,993 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2022-03-20 07:28:25,993 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2022-03-20 07:28:25,993 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2022-03-20 07:28:25,993 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-03-20 07:28:25,993 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2022-03-20 07:28:25,993 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2022-03-20 07:28:25,993 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_long [2022-03-20 07:28:25,993 INFO L130 BoogieDeclarations]: Found specification of procedure ssl3_accept [2022-03-20 07:28:25,993 INFO L130 BoogieDeclarations]: Found specification of procedure main [2022-03-20 07:28:25,994 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2022-03-20 07:28:25,994 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-03-20 07:28:25,995 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-03-20 07:28:25,995 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-03-20 07:28:25,995 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-03-20 07:28:25,995 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-03-20 07:28:26,104 INFO L234 CfgBuilder]: Building ICFG [2022-03-20 07:28:26,106 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-03-20 07:28:26,187 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-20 07:28:26,625 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##90: assume false; [2022-03-20 07:28:26,626 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##91: assume !false; [2022-03-20 07:28:26,630 INFO L275 CfgBuilder]: Performing block encoding [2022-03-20 07:28:26,636 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-03-20 07:28:26,636 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-03-20 07:28:26,638 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.03 07:28:26 BoogieIcfgContainer [2022-03-20 07:28:26,638 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-03-20 07:28:26,639 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-03-20 07:28:26,639 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-03-20 07:28:26,643 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-03-20 07:28:26,645 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.03 07:28:26" (1/1) ... [2022-03-20 07:28:26,647 INFO L168 ansformationObserver]: Applying ICFG transformation LOOP_ACCELERATION_JORDAN [2022-03-20 07:28:26,687 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 20.03 07:28:26 BasicIcfg [2022-03-20 07:28:26,687 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-03-20 07:28:26,689 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-03-20 07:28:26,689 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-03-20 07:28:26,691 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-03-20 07:28:26,691 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.03 07:28:25" (1/4) ... [2022-03-20 07:28:26,692 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1d1d8c7a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.03 07:28:26, skipping insertion in model container [2022-03-20 07:28:26,692 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 07:28:25" (2/4) ... [2022-03-20 07:28:26,692 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1d1d8c7a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.03 07:28:26, skipping insertion in model container [2022-03-20 07:28:26,692 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.03 07:28:26" (3/4) ... [2022-03-20 07:28:26,692 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1d1d8c7a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.03 07:28:26, skipping insertion in model container [2022-03-20 07:28:26,692 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 20.03 07:28:26" (4/4) ... [2022-03-20 07:28:26,693 INFO L111 eAbstractionObserver]: Analyzing ICFG s3_srvr_4.cil.cJordan [2022-03-20 07:28:26,697 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:ForwardPredicates Determinization: PREDICATE_ABSTRACTION [2022-03-20 07:28:26,697 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-03-20 07:28:26,731 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-03-20 07:28:26,736 INFO L340 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=ForwardPredicates, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP [2022-03-20 07:28:26,736 INFO L341 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-03-20 07:28:26,751 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) [2022-03-20 07:28:26,767 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2022-03-20 07:28:26,767 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 07:28:26,768 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 07:28:26,768 INFO L403 AbstractCegarLoop]: === Iteration 1 === Targeting ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 07:28:26,775 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 07:28:26,776 INFO L85 PathProgramCache]: Analyzing trace with hash 53779337, now seen corresponding path program 1 times [2022-03-20 07:28:26,784 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 07:28:26,784 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [731280020] [2022-03-20 07:28:26,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 07:28:26,785 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 07:28:26,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:28:27,103 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 07:28:27,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:28:27,121 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 07:28:27,121 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 07:28:27,122 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [731280020] [2022-03-20 07:28:27,122 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [731280020] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 07:28:27,122 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 07:28:27,123 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-03-20 07:28:27,124 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1854398291] [2022-03-20 07:28:27,125 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 07:28:27,129 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-03-20 07:28:27,130 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-20 07:28:27,155 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-03-20 07:28:27,157 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-03-20 07:28:27,161 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) [2022-03-20 07:28:27,513 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 07:28:27,514 INFO L93 Difference]: Finished difference Result 278 states and 461 transitions. [2022-03-20 07:28:27,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-03-20 07:28:27,518 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 [2022-03-20 07:28:27,519 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 07:28:27,527 INFO L225 Difference]: With dead ends: 278 [2022-03-20 07:28:27,527 INFO L226 Difference]: Without dead ends: 251 [2022-03-20 07:28:27,528 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-03-20 07:28:27,531 INFO L913 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 [2022-03-20 07:28:27,532 INFO L914 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] [2022-03-20 07:28:27,546 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 251 states. [2022-03-20 07:28:27,586 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 251 to 251. [2022-03-20 07:28:27,589 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) [2022-03-20 07:28:27,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 251 states to 251 states and 379 transitions. [2022-03-20 07:28:27,592 INFO L78 Accepts]: Start accepts. Automaton has 251 states and 379 transitions. Word has length 50 [2022-03-20 07:28:27,593 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 07:28:27,593 INFO L478 AbstractCegarLoop]: Abstraction has 251 states and 379 transitions. [2022-03-20 07:28:27,594 INFO L479 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) [2022-03-20 07:28:27,594 INFO L276 IsEmpty]: Start isEmpty. Operand 251 states and 379 transitions. [2022-03-20 07:28:27,597 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-03-20 07:28:27,597 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 07:28:27,597 INFO L499 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 07:28:27,598 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-03-20 07:28:27,598 INFO L403 AbstractCegarLoop]: === Iteration 2 === Targeting ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 07:28:27,598 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 07:28:27,598 INFO L85 PathProgramCache]: Analyzing trace with hash 1911224471, now seen corresponding path program 1 times [2022-03-20 07:28:27,599 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 07:28:27,599 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [470092863] [2022-03-20 07:28:27,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 07:28:27,599 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 07:28:27,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:28:27,689 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 07:28:27,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:28:27,695 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 07:28:27,695 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 07:28:27,696 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [470092863] [2022-03-20 07:28:27,696 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [470092863] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 07:28:27,696 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 07:28:27,696 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-03-20 07:28:27,696 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1760932999] [2022-03-20 07:28:27,697 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 07:28:27,698 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-03-20 07:28:27,698 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-20 07:28:27,698 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-03-20 07:28:27,698 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-03-20 07:28:27,699 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) [2022-03-20 07:28:27,973 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 07:28:27,973 INFO L93 Difference]: Finished difference Result 280 states and 416 transitions. [2022-03-20 07:28:27,974 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-03-20 07:28:27,974 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 [2022-03-20 07:28:27,974 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 07:28:27,976 INFO L225 Difference]: With dead ends: 280 [2022-03-20 07:28:27,976 INFO L226 Difference]: Without dead ends: 280 [2022-03-20 07:28:27,976 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-03-20 07:28:27,978 INFO L913 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, 0.3s IncrementalHoareTripleChecker+Time [2022-03-20 07:28:27,978 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [215 Valid, 220 Invalid, 226 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 211 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-03-20 07:28:27,979 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 280 states. [2022-03-20 07:28:27,997 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 280 to 272. [2022-03-20 07:28:27,997 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) [2022-03-20 07:28:27,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 272 states to 272 states and 405 transitions. [2022-03-20 07:28:27,999 INFO L78 Accepts]: Start accepts. Automaton has 272 states and 405 transitions. Word has length 66 [2022-03-20 07:28:27,999 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 07:28:27,999 INFO L478 AbstractCegarLoop]: Abstraction has 272 states and 405 transitions. [2022-03-20 07:28:27,999 INFO L479 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) [2022-03-20 07:28:28,000 INFO L276 IsEmpty]: Start isEmpty. Operand 272 states and 405 transitions. [2022-03-20 07:28:28,002 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2022-03-20 07:28:28,002 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 07:28:28,002 INFO L499 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 07:28:28,002 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-03-20 07:28:28,003 INFO L403 AbstractCegarLoop]: === Iteration 3 === Targeting ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 07:28:28,003 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 07:28:28,003 INFO L85 PathProgramCache]: Analyzing trace with hash 667686383, now seen corresponding path program 1 times [2022-03-20 07:28:28,004 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 07:28:28,004 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2134804896] [2022-03-20 07:28:28,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 07:28:28,004 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 07:28:28,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:28:28,122 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 07:28:28,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:28:28,128 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-03-20 07:28:28,128 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 07:28:28,128 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2134804896] [2022-03-20 07:28:28,129 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2134804896] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 07:28:28,129 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 07:28:28,129 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-03-20 07:28:28,129 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2134883928] [2022-03-20 07:28:28,129 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 07:28:28,130 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-03-20 07:28:28,130 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-20 07:28:28,130 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-03-20 07:28:28,131 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-03-20 07:28:28,131 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) [2022-03-20 07:28:28,403 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 07:28:28,403 INFO L93 Difference]: Finished difference Result 366 states and 511 transitions. [2022-03-20 07:28:28,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-03-20 07:28:28,403 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 [2022-03-20 07:28:28,404 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 07:28:28,405 INFO L225 Difference]: With dead ends: 366 [2022-03-20 07:28:28,405 INFO L226 Difference]: Without dead ends: 366 [2022-03-20 07:28:28,406 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-03-20 07:28:28,407 INFO L913 BasicCegarLoop]: 214 mSDtfsCounter, 220 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 229 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 220 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, 0.3s IncrementalHoareTripleChecker+Time [2022-03-20 07:28:28,407 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [220 Valid, 221 Invalid, 264 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 229 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-03-20 07:28:28,408 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 366 states. [2022-03-20 07:28:28,416 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 366 to 356. [2022-03-20 07:28:28,416 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) [2022-03-20 07:28:28,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 356 states to 356 states and 499 transitions. [2022-03-20 07:28:28,418 INFO L78 Accepts]: Start accepts. Automaton has 356 states and 499 transitions. Word has length 87 [2022-03-20 07:28:28,418 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 07:28:28,418 INFO L478 AbstractCegarLoop]: Abstraction has 356 states and 499 transitions. [2022-03-20 07:28:28,418 INFO L479 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) [2022-03-20 07:28:28,418 INFO L276 IsEmpty]: Start isEmpty. Operand 356 states and 499 transitions. [2022-03-20 07:28:28,421 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2022-03-20 07:28:28,421 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 07:28:28,421 INFO L499 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 07:28:28,421 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-03-20 07:28:28,421 INFO L403 AbstractCegarLoop]: === Iteration 4 === Targeting ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 07:28:28,422 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 07:28:28,422 INFO L85 PathProgramCache]: Analyzing trace with hash 791759630, now seen corresponding path program 1 times [2022-03-20 07:28:28,422 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 07:28:28,422 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [15399042] [2022-03-20 07:28:28,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 07:28:28,422 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 07:28:28,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:28:28,476 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 07:28:28,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:28:28,481 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-03-20 07:28:28,482 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 07:28:28,482 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [15399042] [2022-03-20 07:28:28,482 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [15399042] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 07:28:28,482 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 07:28:28,482 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-03-20 07:28:28,482 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1320738847] [2022-03-20 07:28:28,482 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 07:28:28,483 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-03-20 07:28:28,483 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-20 07:28:28,483 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-03-20 07:28:28,484 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-03-20 07:28:28,484 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) [2022-03-20 07:28:28,694 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 07:28:28,695 INFO L93 Difference]: Finished difference Result 410 states and 565 transitions. [2022-03-20 07:28:28,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-03-20 07:28:28,695 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 [2022-03-20 07:28:28,696 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 07:28:28,697 INFO L225 Difference]: With dead ends: 410 [2022-03-20 07:28:28,697 INFO L226 Difference]: Without dead ends: 410 [2022-03-20 07:28:28,697 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-03-20 07:28:28,699 INFO L913 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 [2022-03-20 07:28:28,699 INFO L914 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] [2022-03-20 07:28:28,700 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 410 states. [2022-03-20 07:28:28,706 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 410 to 402. [2022-03-20 07:28:28,707 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) [2022-03-20 07:28:28,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 402 states to 402 states and 555 transitions. [2022-03-20 07:28:28,708 INFO L78 Accepts]: Start accepts. Automaton has 402 states and 555 transitions. Word has length 87 [2022-03-20 07:28:28,709 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 07:28:28,709 INFO L478 AbstractCegarLoop]: Abstraction has 402 states and 555 transitions. [2022-03-20 07:28:28,709 INFO L479 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) [2022-03-20 07:28:28,709 INFO L276 IsEmpty]: Start isEmpty. Operand 402 states and 555 transitions. [2022-03-20 07:28:28,711 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2022-03-20 07:28:28,711 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 07:28:28,711 INFO L499 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 07:28:28,711 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-03-20 07:28:28,712 INFO L403 AbstractCegarLoop]: === Iteration 5 === Targeting ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 07:28:28,712 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 07:28:28,712 INFO L85 PathProgramCache]: Analyzing trace with hash -445338313, now seen corresponding path program 1 times [2022-03-20 07:28:28,712 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 07:28:28,712 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [40873898] [2022-03-20 07:28:28,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 07:28:28,713 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 07:28:28,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:28:28,763 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 07:28:28,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:28:28,768 INFO L134 CoverageAnalysis]: Checked inductivity of 83 backedges. 45 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2022-03-20 07:28:28,768 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 07:28:28,768 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [40873898] [2022-03-20 07:28:28,768 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [40873898] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 07:28:28,769 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 07:28:28,769 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-03-20 07:28:28,769 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [637152692] [2022-03-20 07:28:28,769 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 07:28:28,769 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-03-20 07:28:28,769 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-20 07:28:28,770 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-03-20 07:28:28,770 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-03-20 07:28:28,770 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) [2022-03-20 07:28:29,002 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 07:28:29,002 INFO L93 Difference]: Finished difference Result 478 states and 657 transitions. [2022-03-20 07:28:29,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-03-20 07:28:29,003 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 [2022-03-20 07:28:29,003 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 07:28:29,005 INFO L225 Difference]: With dead ends: 478 [2022-03-20 07:28:29,005 INFO L226 Difference]: Without dead ends: 478 [2022-03-20 07:28:29,011 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-03-20 07:28:29,012 INFO L913 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 [2022-03-20 07:28:29,012 INFO L914 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] [2022-03-20 07:28:29,013 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 478 states. [2022-03-20 07:28:29,019 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 478 to 452. [2022-03-20 07:28:29,019 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) [2022-03-20 07:28:29,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 452 states to 452 states and 615 transitions. [2022-03-20 07:28:29,021 INFO L78 Accepts]: Start accepts. Automaton has 452 states and 615 transitions. Word has length 108 [2022-03-20 07:28:29,021 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 07:28:29,021 INFO L478 AbstractCegarLoop]: Abstraction has 452 states and 615 transitions. [2022-03-20 07:28:29,021 INFO L479 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) [2022-03-20 07:28:29,022 INFO L276 IsEmpty]: Start isEmpty. Operand 452 states and 615 transitions. [2022-03-20 07:28:29,026 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2022-03-20 07:28:29,026 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 07:28:29,027 INFO L499 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] [2022-03-20 07:28:29,027 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-03-20 07:28:29,027 INFO L403 AbstractCegarLoop]: === Iteration 6 === Targeting ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 07:28:29,027 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 07:28:29,028 INFO L85 PathProgramCache]: Analyzing trace with hash 2063574049, now seen corresponding path program 1 times [2022-03-20 07:28:29,028 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 07:28:29,028 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1938391469] [2022-03-20 07:28:29,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 07:28:29,028 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 07:28:29,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:28:29,104 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 07:28:29,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:28:29,108 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 62 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2022-03-20 07:28:29,108 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 07:28:29,108 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1938391469] [2022-03-20 07:28:29,109 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1938391469] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 07:28:29,109 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 07:28:29,109 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-03-20 07:28:29,109 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1756310340] [2022-03-20 07:28:29,109 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 07:28:29,109 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-03-20 07:28:29,109 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-20 07:28:29,110 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-03-20 07:28:29,110 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-03-20 07:28:29,110 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) [2022-03-20 07:28:29,306 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 07:28:29,306 INFO L93 Difference]: Finished difference Result 681 states and 924 transitions. [2022-03-20 07:28:29,307 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-03-20 07:28:29,307 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 [2022-03-20 07:28:29,307 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 07:28:29,310 INFO L225 Difference]: With dead ends: 681 [2022-03-20 07:28:29,310 INFO L226 Difference]: Without dead ends: 681 [2022-03-20 07:28:29,310 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-03-20 07:28:29,314 INFO L913 BasicCegarLoop]: 374 mSDtfsCounter, 334 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 203 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 334 SdHoareTripleChecker+Valid, 381 SdHoareTripleChecker+Invalid, 209 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 203 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-20 07:28:29,317 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [334 Valid, 381 Invalid, 209 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 203 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-03-20 07:28:29,319 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 681 states. [2022-03-20 07:28:29,328 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 681 to 681. [2022-03-20 07:28:29,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 681 states, 676 states have (on average 1.3609467455621302) internal successors, (920), 676 states have internal predecessors, (920), 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) [2022-03-20 07:28:29,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 681 states to 681 states and 924 transitions. [2022-03-20 07:28:29,333 INFO L78 Accepts]: Start accepts. Automaton has 681 states and 924 transitions. Word has length 127 [2022-03-20 07:28:29,334 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 07:28:29,334 INFO L478 AbstractCegarLoop]: Abstraction has 681 states and 924 transitions. [2022-03-20 07:28:29,334 INFO L479 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) [2022-03-20 07:28:29,334 INFO L276 IsEmpty]: Start isEmpty. Operand 681 states and 924 transitions. [2022-03-20 07:28:29,337 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2022-03-20 07:28:29,337 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 07:28:29,337 INFO L499 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, 1] [2022-03-20 07:28:29,337 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-03-20 07:28:29,338 INFO L403 AbstractCegarLoop]: === Iteration 7 === Targeting ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 07:28:29,338 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 07:28:29,338 INFO L85 PathProgramCache]: Analyzing trace with hash 1353600599, now seen corresponding path program 1 times [2022-03-20 07:28:29,339 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 07:28:29,339 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1908911695] [2022-03-20 07:28:29,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 07:28:29,339 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 07:28:29,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:28:29,413 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 07:28:29,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:28:29,423 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 89 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-03-20 07:28:29,423 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 07:28:29,424 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1908911695] [2022-03-20 07:28:29,424 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1908911695] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 07:28:29,424 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 07:28:29,424 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-03-20 07:28:29,424 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1417514582] [2022-03-20 07:28:29,424 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 07:28:29,425 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-03-20 07:28:29,426 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-20 07:28:29,426 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-03-20 07:28:29,426 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-03-20 07:28:29,426 INFO L87 Difference]: Start difference. First operand 681 states and 924 transitions. Second operand has 4 states, 4 states have (on average 28.5) internal successors, (114), 3 states have internal predecessors, (114), 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) [2022-03-20 07:28:29,616 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 07:28:29,616 INFO L93 Difference]: Finished difference Result 907 states and 1230 transitions. [2022-03-20 07:28:29,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-03-20 07:28:29,617 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 28.5) internal successors, (114), 3 states have internal predecessors, (114), 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 128 [2022-03-20 07:28:29,617 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 07:28:29,620 INFO L225 Difference]: With dead ends: 907 [2022-03-20 07:28:29,620 INFO L226 Difference]: Without dead ends: 907 [2022-03-20 07:28:29,620 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-03-20 07:28:29,622 INFO L913 BasicCegarLoop]: 372 mSDtfsCounter, 330 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 201 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 330 SdHoareTripleChecker+Valid, 379 SdHoareTripleChecker+Invalid, 207 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 201 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-20 07:28:29,622 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [330 Valid, 379 Invalid, 207 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 201 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-03-20 07:28:29,624 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 907 states. [2022-03-20 07:28:29,635 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 907 to 907. [2022-03-20 07:28:29,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 907 states, 902 states have (on average 1.3592017738359201) internal successors, (1226), 902 states have internal predecessors, (1226), 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) [2022-03-20 07:28:29,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 907 states to 907 states and 1230 transitions. [2022-03-20 07:28:29,640 INFO L78 Accepts]: Start accepts. Automaton has 907 states and 1230 transitions. Word has length 128 [2022-03-20 07:28:29,640 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 07:28:29,640 INFO L478 AbstractCegarLoop]: Abstraction has 907 states and 1230 transitions. [2022-03-20 07:28:29,641 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 28.5) internal successors, (114), 3 states have internal predecessors, (114), 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) [2022-03-20 07:28:29,641 INFO L276 IsEmpty]: Start isEmpty. Operand 907 states and 1230 transitions. [2022-03-20 07:28:29,643 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2022-03-20 07:28:29,643 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 07:28:29,643 INFO L499 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, 1] [2022-03-20 07:28:29,643 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-03-20 07:28:29,643 INFO L403 AbstractCegarLoop]: === Iteration 8 === Targeting ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 07:28:29,644 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 07:28:29,644 INFO L85 PathProgramCache]: Analyzing trace with hash 144358360, now seen corresponding path program 1 times [2022-03-20 07:28:29,644 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 07:28:29,644 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1324584069] [2022-03-20 07:28:29,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 07:28:29,644 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 07:28:29,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:28:29,695 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 07:28:29,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:28:29,699 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 65 proven. 0 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2022-03-20 07:28:29,699 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 07:28:29,699 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1324584069] [2022-03-20 07:28:29,699 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1324584069] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 07:28:29,699 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 07:28:29,700 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-03-20 07:28:29,700 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1998559351] [2022-03-20 07:28:29,700 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 07:28:29,702 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-03-20 07:28:29,702 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-20 07:28:29,704 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-03-20 07:28:29,705 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-03-20 07:28:29,705 INFO L87 Difference]: Start difference. First operand 907 states and 1230 transitions. Second operand has 4 states, 4 states have (on average 22.5) internal successors, (90), 3 states have internal predecessors, (90), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-20 07:28:29,889 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 07:28:29,890 INFO L93 Difference]: Finished difference Result 931 states and 1259 transitions. [2022-03-20 07:28:29,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-03-20 07:28:29,890 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 22.5) internal successors, (90), 3 states have internal predecessors, (90), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 128 [2022-03-20 07:28:29,890 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 07:28:29,893 INFO L225 Difference]: With dead ends: 931 [2022-03-20 07:28:29,893 INFO L226 Difference]: Without dead ends: 931 [2022-03-20 07:28:29,894 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-03-20 07:28:29,894 INFO L913 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 [2022-03-20 07:28:29,894 INFO L914 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] [2022-03-20 07:28:29,895 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 931 states. [2022-03-20 07:28:29,904 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 931 to 931. [2022-03-20 07:28:29,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 931 states, 926 states have (on average 1.355291576673866) internal successors, (1255), 926 states have internal predecessors, (1255), 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) [2022-03-20 07:28:29,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 931 states to 931 states and 1259 transitions. [2022-03-20 07:28:29,909 INFO L78 Accepts]: Start accepts. Automaton has 931 states and 1259 transitions. Word has length 128 [2022-03-20 07:28:29,909 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 07:28:29,909 INFO L478 AbstractCegarLoop]: Abstraction has 931 states and 1259 transitions. [2022-03-20 07:28:29,909 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.5) internal successors, (90), 3 states have internal predecessors, (90), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-20 07:28:29,909 INFO L276 IsEmpty]: Start isEmpty. Operand 931 states and 1259 transitions. [2022-03-20 07:28:29,912 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2022-03-20 07:28:29,912 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 07:28:29,912 INFO L499 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, 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] [2022-03-20 07:28:29,912 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-03-20 07:28:29,912 INFO L403 AbstractCegarLoop]: === Iteration 9 === Targeting ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 07:28:29,913 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 07:28:29,913 INFO L85 PathProgramCache]: Analyzing trace with hash -2011766683, now seen corresponding path program 1 times [2022-03-20 07:28:29,913 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 07:28:29,913 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1014206767] [2022-03-20 07:28:29,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 07:28:29,913 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 07:28:29,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:28:29,978 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 07:28:29,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:28:29,982 INFO L134 CoverageAnalysis]: Checked inductivity of 202 backedges. 164 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2022-03-20 07:28:29,982 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 07:28:29,982 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1014206767] [2022-03-20 07:28:29,982 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1014206767] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 07:28:29,982 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 07:28:29,983 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-03-20 07:28:29,983 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1023094617] [2022-03-20 07:28:29,983 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 07:28:29,983 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-03-20 07:28:29,983 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-20 07:28:29,984 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-03-20 07:28:29,984 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-03-20 07:28:29,984 INFO L87 Difference]: Start difference. First operand 931 states and 1259 transitions. Second operand has 4 states, 4 states have (on average 34.75) internal successors, (139), 3 states have internal predecessors, (139), 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) [2022-03-20 07:28:30,216 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 07:28:30,217 INFO L93 Difference]: Finished difference Result 1100 states and 1467 transitions. [2022-03-20 07:28:30,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-03-20 07:28:30,218 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 34.75) internal successors, (139), 3 states have internal predecessors, (139), 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 168 [2022-03-20 07:28:30,218 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 07:28:30,221 INFO L225 Difference]: With dead ends: 1100 [2022-03-20 07:28:30,221 INFO L226 Difference]: Without dead ends: 1100 [2022-03-20 07:28:30,222 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-03-20 07:28:30,223 INFO L913 BasicCegarLoop]: 211 mSDtfsCounter, 236 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 229 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 236 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 [2022-03-20 07:28:30,224 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [236 Valid, 218 Invalid, 266 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 229 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-03-20 07:28:30,225 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1100 states. [2022-03-20 07:28:30,236 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1100 to 1054. [2022-03-20 07:28:30,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1054 states, 1049 states have (on average 1.336510962821735) internal successors, (1402), 1049 states have internal predecessors, (1402), 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) [2022-03-20 07:28:30,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1054 states to 1054 states and 1406 transitions. [2022-03-20 07:28:30,240 INFO L78 Accepts]: Start accepts. Automaton has 1054 states and 1406 transitions. Word has length 168 [2022-03-20 07:28:30,241 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 07:28:30,241 INFO L478 AbstractCegarLoop]: Abstraction has 1054 states and 1406 transitions. [2022-03-20 07:28:30,241 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 34.75) internal successors, (139), 3 states have internal predecessors, (139), 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) [2022-03-20 07:28:30,241 INFO L276 IsEmpty]: Start isEmpty. Operand 1054 states and 1406 transitions. [2022-03-20 07:28:30,244 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2022-03-20 07:28:30,244 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 07:28:30,244 INFO L499 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, 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] [2022-03-20 07:28:30,244 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-03-20 07:28:30,244 INFO L403 AbstractCegarLoop]: === Iteration 10 === Targeting ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 07:28:30,245 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 07:28:30,245 INFO L85 PathProgramCache]: Analyzing trace with hash 831388600, now seen corresponding path program 1 times [2022-03-20 07:28:30,245 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 07:28:30,245 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1162903248] [2022-03-20 07:28:30,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 07:28:30,245 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 07:28:30,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:28:30,306 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 07:28:30,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:28:30,310 INFO L134 CoverageAnalysis]: Checked inductivity of 225 backedges. 152 proven. 0 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2022-03-20 07:28:30,310 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 07:28:30,310 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1162903248] [2022-03-20 07:28:30,310 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1162903248] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 07:28:30,310 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 07:28:30,310 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-03-20 07:28:30,311 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [484588064] [2022-03-20 07:28:30,311 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 07:28:30,311 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-03-20 07:28:30,311 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-20 07:28:30,312 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-03-20 07:28:30,312 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-03-20 07:28:30,312 INFO L87 Difference]: Start difference. First operand 1054 states and 1406 transitions. Second operand has 4 states, 4 states have (on average 29.5) internal successors, (118), 3 states have internal predecessors, (118), 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) [2022-03-20 07:28:30,506 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 07:28:30,506 INFO L93 Difference]: Finished difference Result 1280 states and 1767 transitions. [2022-03-20 07:28:30,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-03-20 07:28:30,507 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 29.5) internal successors, (118), 3 states have internal predecessors, (118), 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 181 [2022-03-20 07:28:30,507 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 07:28:30,511 INFO L225 Difference]: With dead ends: 1280 [2022-03-20 07:28:30,512 INFO L226 Difference]: Without dead ends: 1276 [2022-03-20 07:28:30,512 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-03-20 07:28:30,512 INFO L913 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 [2022-03-20 07:28:30,513 INFO L914 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] [2022-03-20 07:28:30,515 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1276 states. [2022-03-20 07:28:30,530 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1276 to 1258. [2022-03-20 07:28:30,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1258 states, 1253 states have (on average 1.3894652833200318) internal successors, (1741), 1253 states have internal predecessors, (1741), 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) [2022-03-20 07:28:30,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1258 states to 1258 states and 1745 transitions. [2022-03-20 07:28:30,535 INFO L78 Accepts]: Start accepts. Automaton has 1258 states and 1745 transitions. Word has length 181 [2022-03-20 07:28:30,535 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 07:28:30,535 INFO L478 AbstractCegarLoop]: Abstraction has 1258 states and 1745 transitions. [2022-03-20 07:28:30,535 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 29.5) internal successors, (118), 3 states have internal predecessors, (118), 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) [2022-03-20 07:28:30,536 INFO L276 IsEmpty]: Start isEmpty. Operand 1258 states and 1745 transitions. [2022-03-20 07:28:30,538 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 211 [2022-03-20 07:28:30,538 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 07:28:30,539 INFO L499 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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] [2022-03-20 07:28:30,539 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-03-20 07:28:30,539 INFO L403 AbstractCegarLoop]: === Iteration 11 === Targeting ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 07:28:30,540 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 07:28:30,540 INFO L85 PathProgramCache]: Analyzing trace with hash -368061555, now seen corresponding path program 1 times [2022-03-20 07:28:30,540 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 07:28:30,540 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2116186602] [2022-03-20 07:28:30,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 07:28:30,540 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 07:28:30,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:28:30,603 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 07:28:30,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:28:30,608 INFO L134 CoverageAnalysis]: Checked inductivity of 338 backedges. 229 proven. 0 refuted. 0 times theorem prover too weak. 109 trivial. 0 not checked. [2022-03-20 07:28:30,608 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 07:28:30,608 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2116186602] [2022-03-20 07:28:30,608 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2116186602] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 07:28:30,609 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 07:28:30,609 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-03-20 07:28:30,609 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1820439961] [2022-03-20 07:28:30,609 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 07:28:30,609 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-03-20 07:28:30,610 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-20 07:28:30,610 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-03-20 07:28:30,610 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-03-20 07:28:30,610 INFO L87 Difference]: Start difference. First operand 1258 states and 1745 transitions. Second operand has 4 states, 4 states have (on average 34.75) internal successors, (139), 3 states have internal predecessors, (139), 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) [2022-03-20 07:28:30,821 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 07:28:30,821 INFO L93 Difference]: Finished difference Result 1382 states and 1889 transitions. [2022-03-20 07:28:30,822 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-03-20 07:28:30,822 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 34.75) internal successors, (139), 3 states have internal predecessors, (139), 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 210 [2022-03-20 07:28:30,822 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 07:28:30,826 INFO L225 Difference]: With dead ends: 1382 [2022-03-20 07:28:30,826 INFO L226 Difference]: Without dead ends: 1382 [2022-03-20 07:28:30,826 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-03-20 07:28:30,827 INFO L913 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 [2022-03-20 07:28:30,827 INFO L914 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] [2022-03-20 07:28:30,828 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1382 states. [2022-03-20 07:28:30,842 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1382 to 1382. [2022-03-20 07:28:30,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1382 states, 1377 states have (on average 1.3689179375453886) internal successors, (1885), 1377 states have internal predecessors, (1885), 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) [2022-03-20 07:28:30,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1382 states to 1382 states and 1889 transitions. [2022-03-20 07:28:30,848 INFO L78 Accepts]: Start accepts. Automaton has 1382 states and 1889 transitions. Word has length 210 [2022-03-20 07:28:30,848 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 07:28:30,848 INFO L478 AbstractCegarLoop]: Abstraction has 1382 states and 1889 transitions. [2022-03-20 07:28:30,848 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 34.75) internal successors, (139), 3 states have internal predecessors, (139), 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) [2022-03-20 07:28:30,849 INFO L276 IsEmpty]: Start isEmpty. Operand 1382 states and 1889 transitions. [2022-03-20 07:28:30,851 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 239 [2022-03-20 07:28:30,852 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 07:28:30,852 INFO L499 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 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] [2022-03-20 07:28:30,852 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-03-20 07:28:30,852 INFO L403 AbstractCegarLoop]: === Iteration 12 === Targeting ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 07:28:30,852 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 07:28:30,852 INFO L85 PathProgramCache]: Analyzing trace with hash 1944604409, now seen corresponding path program 1 times [2022-03-20 07:28:30,853 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 07:28:30,853 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [296091999] [2022-03-20 07:28:30,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 07:28:30,853 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 07:28:30,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:28:30,951 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 07:28:30,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:28:30,954 INFO L134 CoverageAnalysis]: Checked inductivity of 469 backedges. 343 proven. 26 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2022-03-20 07:28:30,955 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 07:28:30,955 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [296091999] [2022-03-20 07:28:30,955 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [296091999] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-20 07:28:30,955 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1893968899] [2022-03-20 07:28:30,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 07:28:30,955 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-20 07:28:30,955 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-20 07:28:30,959 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-20 07:28:30,985 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-03-20 07:28:31,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:28:31,074 INFO L263 TraceCheckSpWp]: Trace formula consists of 493 conjuncts, 3 conjunts are in the unsatisfiable core [2022-03-20 07:28:31,081 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-20 07:28:31,533 INFO L134 CoverageAnalysis]: Checked inductivity of 469 backedges. 343 proven. 26 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2022-03-20 07:28:31,533 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-20 07:28:31,826 INFO L134 CoverageAnalysis]: Checked inductivity of 469 backedges. 343 proven. 26 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2022-03-20 07:28:31,826 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1893968899] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-20 07:28:31,826 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-20 07:28:31,827 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4, 4] total 7 [2022-03-20 07:28:31,827 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2098960325] [2022-03-20 07:28:31,827 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-20 07:28:31,828 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-03-20 07:28:31,828 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-20 07:28:31,828 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-03-20 07:28:31,828 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-03-20 07:28:31,828 INFO L87 Difference]: Start difference. First operand 1382 states and 1889 transitions. Second operand has 7 states, 7 states have (on average 34.42857142857143) internal successors, (241), 6 states have internal predecessors, (241), 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) [2022-03-20 07:28:32,430 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 07:28:32,430 INFO L93 Difference]: Finished difference Result 1996 states and 2679 transitions. [2022-03-20 07:28:32,430 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-03-20 07:28:32,431 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 34.42857142857143) internal successors, (241), 6 states have internal predecessors, (241), 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 238 [2022-03-20 07:28:32,431 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 07:28:32,438 INFO L225 Difference]: With dead ends: 1996 [2022-03-20 07:28:32,438 INFO L226 Difference]: Without dead ends: 1952 [2022-03-20 07:28:32,438 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 488 GetRequests, 479 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2022-03-20 07:28:32,439 INFO L913 BasicCegarLoop]: 311 mSDtfsCounter, 477 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 941 mSolverCounterSat, 66 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 477 SdHoareTripleChecker+Valid, 333 SdHoareTripleChecker+Invalid, 1007 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 66 IncrementalHoareTripleChecker+Valid, 941 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-20 07:28:32,439 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [477 Valid, 333 Invalid, 1007 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [66 Valid, 941 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-20 07:28:32,441 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1952 states. [2022-03-20 07:28:32,459 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1952 to 1593. [2022-03-20 07:28:32,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1593 states, 1588 states have (on average 1.3400503778337531) internal successors, (2128), 1588 states have internal predecessors, (2128), 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) [2022-03-20 07:28:32,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1593 states to 1593 states and 2132 transitions. [2022-03-20 07:28:32,468 INFO L78 Accepts]: Start accepts. Automaton has 1593 states and 2132 transitions. Word has length 238 [2022-03-20 07:28:32,468 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 07:28:32,468 INFO L478 AbstractCegarLoop]: Abstraction has 1593 states and 2132 transitions. [2022-03-20 07:28:32,468 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 34.42857142857143) internal successors, (241), 6 states have internal predecessors, (241), 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) [2022-03-20 07:28:32,469 INFO L276 IsEmpty]: Start isEmpty. Operand 1593 states and 2132 transitions. [2022-03-20 07:28:32,494 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 260 [2022-03-20 07:28:32,495 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 07:28:32,495 INFO L499 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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] [2022-03-20 07:28:32,523 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-03-20 07:28:32,717 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2022-03-20 07:28:32,718 INFO L403 AbstractCegarLoop]: === Iteration 13 === Targeting ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 07:28:32,718 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 07:28:32,718 INFO L85 PathProgramCache]: Analyzing trace with hash 1538435022, now seen corresponding path program 1 times [2022-03-20 07:28:32,718 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 07:28:32,719 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2101958500] [2022-03-20 07:28:32,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 07:28:32,719 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 07:28:32,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:28:32,791 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 07:28:32,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:28:32,796 INFO L134 CoverageAnalysis]: Checked inductivity of 581 backedges. 430 proven. 16 refuted. 0 times theorem prover too weak. 135 trivial. 0 not checked. [2022-03-20 07:28:32,796 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 07:28:32,796 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2101958500] [2022-03-20 07:28:32,796 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2101958500] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-20 07:28:32,797 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2040474273] [2022-03-20 07:28:32,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 07:28:32,797 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-20 07:28:32,797 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-20 07:28:32,798 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) [2022-03-20 07:28:32,800 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-03-20 07:28:32,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:28:32,908 INFO L263 TraceCheckSpWp]: Trace formula consists of 523 conjuncts, 3 conjunts are in the unsatisfiable core [2022-03-20 07:28:32,920 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-20 07:28:33,254 INFO L134 CoverageAnalysis]: Checked inductivity of 581 backedges. 430 proven. 16 refuted. 0 times theorem prover too weak. 135 trivial. 0 not checked. [2022-03-20 07:28:33,254 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-20 07:28:33,648 INFO L134 CoverageAnalysis]: Checked inductivity of 581 backedges. 430 proven. 16 refuted. 0 times theorem prover too weak. 135 trivial. 0 not checked. [2022-03-20 07:28:33,648 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2040474273] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-20 07:28:33,648 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-20 07:28:33,648 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4, 4] total 7 [2022-03-20 07:28:33,649 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [302975672] [2022-03-20 07:28:33,649 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-20 07:28:33,649 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-03-20 07:28:33,650 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-20 07:28:33,650 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-03-20 07:28:33,650 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-03-20 07:28:33,650 INFO L87 Difference]: Start difference. First operand 1593 states and 2132 transitions. Second operand has 7 states, 7 states have (on average 29.857142857142858) internal successors, (209), 6 states have internal predecessors, (209), 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) [2022-03-20 07:28:34,828 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 07:28:34,828 INFO L93 Difference]: Finished difference Result 4989 states and 6539 transitions. [2022-03-20 07:28:34,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-03-20 07:28:34,829 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 29.857142857142858) internal successors, (209), 6 states have internal predecessors, (209), 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 259 [2022-03-20 07:28:34,829 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 07:28:34,844 INFO L225 Difference]: With dead ends: 4989 [2022-03-20 07:28:34,844 INFO L226 Difference]: Without dead ends: 4989 [2022-03-20 07:28:34,844 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 539 GetRequests, 526 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=74, Invalid=136, Unknown=0, NotChecked=0, Total=210 [2022-03-20 07:28:34,845 INFO L913 BasicCegarLoop]: 548 mSDtfsCounter, 715 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 1598 mSolverCounterSat, 81 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 715 SdHoareTripleChecker+Valid, 565 SdHoareTripleChecker+Invalid, 1679 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 81 IncrementalHoareTripleChecker+Valid, 1598 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-03-20 07:28:34,846 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [715 Valid, 565 Invalid, 1679 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [81 Valid, 1598 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-03-20 07:28:34,850 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4989 states. [2022-03-20 07:28:34,912 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4989 to 4113. [2022-03-20 07:28:34,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4113 states, 4108 states have (on average 1.333495618305745) internal successors, (5478), 4108 states have internal predecessors, (5478), 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) [2022-03-20 07:28:34,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4113 states to 4113 states and 5482 transitions. [2022-03-20 07:28:34,927 INFO L78 Accepts]: Start accepts. Automaton has 4113 states and 5482 transitions. Word has length 259 [2022-03-20 07:28:34,927 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 07:28:34,928 INFO L478 AbstractCegarLoop]: Abstraction has 4113 states and 5482 transitions. [2022-03-20 07:28:34,928 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 29.857142857142858) internal successors, (209), 6 states have internal predecessors, (209), 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) [2022-03-20 07:28:34,928 INFO L276 IsEmpty]: Start isEmpty. Operand 4113 states and 5482 transitions. [2022-03-20 07:28:34,935 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 260 [2022-03-20 07:28:34,935 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 07:28:34,935 INFO L499 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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] [2022-03-20 07:28:34,959 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-03-20 07:28:35,151 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-03-20 07:28:35,152 INFO L403 AbstractCegarLoop]: === Iteration 14 === Targeting ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 07:28:35,152 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 07:28:35,152 INFO L85 PathProgramCache]: Analyzing trace with hash 1682844717, now seen corresponding path program 1 times [2022-03-20 07:28:35,152 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 07:28:35,152 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1370072966] [2022-03-20 07:28:35,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 07:28:35,153 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 07:28:35,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:28:35,200 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 07:28:35,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:28:35,203 INFO L134 CoverageAnalysis]: Checked inductivity of 581 backedges. 400 proven. 0 refuted. 0 times theorem prover too weak. 181 trivial. 0 not checked. [2022-03-20 07:28:35,204 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 07:28:35,204 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1370072966] [2022-03-20 07:28:35,204 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1370072966] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 07:28:35,204 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 07:28:35,204 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-03-20 07:28:35,205 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [660477357] [2022-03-20 07:28:35,205 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 07:28:35,206 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-03-20 07:28:35,206 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-20 07:28:35,206 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-03-20 07:28:35,206 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-03-20 07:28:35,207 INFO L87 Difference]: Start difference. First operand 4113 states and 5482 transitions. Second operand has 4 states, 4 states have (on average 34.25) internal successors, (137), 3 states have internal predecessors, (137), 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) [2022-03-20 07:28:35,423 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 07:28:35,423 INFO L93 Difference]: Finished difference Result 6796 states and 9070 transitions. [2022-03-20 07:28:35,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-03-20 07:28:35,424 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 34.25) internal successors, (137), 3 states have internal predecessors, (137), 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 259 [2022-03-20 07:28:35,424 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 07:28:35,444 INFO L225 Difference]: With dead ends: 6796 [2022-03-20 07:28:35,444 INFO L226 Difference]: Without dead ends: 6796 [2022-03-20 07:28:35,444 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-03-20 07:28:35,445 INFO L913 BasicCegarLoop]: 373 mSDtfsCounter, 334 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 198 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 334 SdHoareTripleChecker+Valid, 380 SdHoareTripleChecker+Invalid, 204 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 198 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-20 07:28:35,445 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [334 Valid, 380 Invalid, 204 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 198 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-03-20 07:28:35,450 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6796 states. [2022-03-20 07:28:35,538 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6796 to 6508. [2022-03-20 07:28:35,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6508 states, 6503 states have (on average 1.3416884514839305) internal successors, (8725), 6503 states have internal predecessors, (8725), 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) [2022-03-20 07:28:35,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6508 states to 6508 states and 8729 transitions. [2022-03-20 07:28:35,559 INFO L78 Accepts]: Start accepts. Automaton has 6508 states and 8729 transitions. Word has length 259 [2022-03-20 07:28:35,559 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 07:28:35,559 INFO L478 AbstractCegarLoop]: Abstraction has 6508 states and 8729 transitions. [2022-03-20 07:28:35,559 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 34.25) internal successors, (137), 3 states have internal predecessors, (137), 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) [2022-03-20 07:28:35,560 INFO L276 IsEmpty]: Start isEmpty. Operand 6508 states and 8729 transitions. [2022-03-20 07:28:35,569 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 297 [2022-03-20 07:28:35,570 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 07:28:35,571 INFO L499 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 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, 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] [2022-03-20 07:28:35,571 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-03-20 07:28:35,571 INFO L403 AbstractCegarLoop]: === Iteration 15 === Targeting ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 07:28:35,571 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 07:28:35,572 INFO L85 PathProgramCache]: Analyzing trace with hash -1683519860, now seen corresponding path program 1 times [2022-03-20 07:28:35,572 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 07:28:35,572 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [337950176] [2022-03-20 07:28:35,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 07:28:35,572 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 07:28:35,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:28:35,667 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 07:28:35,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:28:35,679 INFO L134 CoverageAnalysis]: Checked inductivity of 782 backedges. 449 proven. 0 refuted. 0 times theorem prover too weak. 333 trivial. 0 not checked. [2022-03-20 07:28:35,679 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 07:28:35,679 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [337950176] [2022-03-20 07:28:35,680 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [337950176] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 07:28:35,680 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 07:28:35,680 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-03-20 07:28:35,680 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1888756267] [2022-03-20 07:28:35,680 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 07:28:35,680 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-03-20 07:28:35,680 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-20 07:28:35,681 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-03-20 07:28:35,681 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-03-20 07:28:35,681 INFO L87 Difference]: Start difference. First operand 6508 states and 8729 transitions. Second operand has 4 states, 4 states have (on average 35.5) internal successors, (142), 3 states have internal predecessors, (142), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-20 07:28:35,916 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 07:28:35,916 INFO L93 Difference]: Finished difference Result 4594 states and 5783 transitions. [2022-03-20 07:28:35,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-03-20 07:28:35,917 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 35.5) internal successors, (142), 3 states have internal predecessors, (142), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 296 [2022-03-20 07:28:35,917 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 07:28:35,926 INFO L225 Difference]: With dead ends: 4594 [2022-03-20 07:28:35,926 INFO L226 Difference]: Without dead ends: 3167 [2022-03-20 07:28:35,928 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-03-20 07:28:35,929 INFO L913 BasicCegarLoop]: 213 mSDtfsCounter, 223 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 227 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 223 SdHoareTripleChecker+Valid, 220 SdHoareTripleChecker+Invalid, 256 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 227 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-20 07:28:35,929 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [223 Valid, 220 Invalid, 256 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 227 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-03-20 07:28:35,932 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3167 states. [2022-03-20 07:28:35,967 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3167 to 2897. [2022-03-20 07:28:35,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2897 states, 2892 states have (on average 1.329875518672199) internal successors, (3846), 2892 states have internal predecessors, (3846), 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) [2022-03-20 07:28:35,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2897 states to 2897 states and 3850 transitions. [2022-03-20 07:28:35,975 INFO L78 Accepts]: Start accepts. Automaton has 2897 states and 3850 transitions. Word has length 296 [2022-03-20 07:28:35,975 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 07:28:35,975 INFO L478 AbstractCegarLoop]: Abstraction has 2897 states and 3850 transitions. [2022-03-20 07:28:35,975 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 35.5) internal successors, (142), 3 states have internal predecessors, (142), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-20 07:28:35,975 INFO L276 IsEmpty]: Start isEmpty. Operand 2897 states and 3850 transitions. [2022-03-20 07:28:35,982 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 344 [2022-03-20 07:28:35,982 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 07:28:35,982 INFO L499 BasicCegarLoop]: trace histogram [11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 10, 10, 10, 10, 10, 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, 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] [2022-03-20 07:28:35,982 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-03-20 07:28:35,982 INFO L403 AbstractCegarLoop]: === Iteration 16 === Targeting ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 07:28:35,983 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 07:28:35,983 INFO L85 PathProgramCache]: Analyzing trace with hash 568997781, now seen corresponding path program 1 times [2022-03-20 07:28:35,983 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 07:28:35,983 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1508158594] [2022-03-20 07:28:35,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 07:28:35,983 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 07:28:36,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:28:36,034 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 07:28:36,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:28:36,039 INFO L134 CoverageAnalysis]: Checked inductivity of 1114 backedges. 580 proven. 0 refuted. 0 times theorem prover too weak. 534 trivial. 0 not checked. [2022-03-20 07:28:36,039 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 07:28:36,039 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1508158594] [2022-03-20 07:28:36,039 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1508158594] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 07:28:36,039 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 07:28:36,039 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-03-20 07:28:36,039 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2145067662] [2022-03-20 07:28:36,039 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 07:28:36,040 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-03-20 07:28:36,040 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-20 07:28:36,040 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-03-20 07:28:36,040 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-03-20 07:28:36,041 INFO L87 Difference]: Start difference. First operand 2897 states and 3850 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) [2022-03-20 07:28:36,248 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 07:28:36,249 INFO L93 Difference]: Finished difference Result 3235 states and 4288 transitions. [2022-03-20 07:28:36,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-03-20 07:28:36,249 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 343 [2022-03-20 07:28:36,249 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 07:28:36,265 INFO L225 Difference]: With dead ends: 3235 [2022-03-20 07:28:36,265 INFO L226 Difference]: Without dead ends: 3235 [2022-03-20 07:28:36,266 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-03-20 07:28:36,266 INFO L913 BasicCegarLoop]: 209 mSDtfsCounter, 223 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 213 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 223 SdHoareTripleChecker+Valid, 216 SdHoareTripleChecker+Invalid, 222 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 213 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-20 07:28:36,266 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [223 Valid, 216 Invalid, 222 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 213 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-03-20 07:28:36,270 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3235 states. [2022-03-20 07:28:36,312 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3235 to 3167. [2022-03-20 07:28:36,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3167 states, 3162 states have (on average 1.3175205566097408) internal successors, (4166), 3162 states have internal predecessors, (4166), 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) [2022-03-20 07:28:36,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3167 states to 3167 states and 4170 transitions. [2022-03-20 07:28:36,334 INFO L78 Accepts]: Start accepts. Automaton has 3167 states and 4170 transitions. Word has length 343 [2022-03-20 07:28:36,334 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 07:28:36,334 INFO L478 AbstractCegarLoop]: Abstraction has 3167 states and 4170 transitions. [2022-03-20 07:28:36,335 INFO L479 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) [2022-03-20 07:28:36,335 INFO L276 IsEmpty]: Start isEmpty. Operand 3167 states and 4170 transitions. [2022-03-20 07:28:36,343 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 367 [2022-03-20 07:28:36,343 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 07:28:36,343 INFO L499 BasicCegarLoop]: trace histogram [12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 11, 11, 11, 11, 11, 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, 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] [2022-03-20 07:28:36,343 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-03-20 07:28:36,343 INFO L403 AbstractCegarLoop]: === Iteration 17 === Targeting ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 07:28:36,344 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 07:28:36,344 INFO L85 PathProgramCache]: Analyzing trace with hash 437625608, now seen corresponding path program 1 times [2022-03-20 07:28:36,344 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 07:28:36,344 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [215696555] [2022-03-20 07:28:36,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 07:28:36,345 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 07:28:36,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:28:36,402 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 07:28:36,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:28:36,406 INFO L134 CoverageAnalysis]: Checked inductivity of 1327 backedges. 738 proven. 0 refuted. 0 times theorem prover too weak. 589 trivial. 0 not checked. [2022-03-20 07:28:36,406 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 07:28:36,406 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [215696555] [2022-03-20 07:28:36,406 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [215696555] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 07:28:36,406 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 07:28:36,406 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-03-20 07:28:36,406 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [91083808] [2022-03-20 07:28:36,407 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 07:28:36,407 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-03-20 07:28:36,407 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-20 07:28:36,408 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-03-20 07:28:36,408 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-03-20 07:28:36,408 INFO L87 Difference]: Start difference. First operand 3167 states and 4170 transitions. Second operand has 4 states, 4 states have (on average 35.5) internal successors, (142), 3 states have internal predecessors, (142), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-20 07:28:36,633 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 07:28:36,633 INFO L93 Difference]: Finished difference Result 3296 states and 4259 transitions. [2022-03-20 07:28:36,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-03-20 07:28:36,633 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 35.5) internal successors, (142), 3 states have internal predecessors, (142), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 366 [2022-03-20 07:28:36,634 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 07:28:36,645 INFO L225 Difference]: With dead ends: 3296 [2022-03-20 07:28:36,645 INFO L226 Difference]: Without dead ends: 3296 [2022-03-20 07:28:36,645 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-03-20 07:28:36,646 INFO L913 BasicCegarLoop]: 209 mSDtfsCounter, 204 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 213 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 204 SdHoareTripleChecker+Valid, 216 SdHoareTripleChecker+Invalid, 226 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 213 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-20 07:28:36,646 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [204 Valid, 216 Invalid, 226 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 213 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-03-20 07:28:36,649 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3296 states. [2022-03-20 07:28:36,674 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3296 to 2374. [2022-03-20 07:28:36,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2374 states, 2369 states have (on average 1.3085690164626425) internal successors, (3100), 2369 states have internal predecessors, (3100), 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) [2022-03-20 07:28:36,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2374 states to 2374 states and 3104 transitions. [2022-03-20 07:28:36,680 INFO L78 Accepts]: Start accepts. Automaton has 2374 states and 3104 transitions. Word has length 366 [2022-03-20 07:28:36,680 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 07:28:36,681 INFO L478 AbstractCegarLoop]: Abstraction has 2374 states and 3104 transitions. [2022-03-20 07:28:36,681 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 35.5) internal successors, (142), 3 states have internal predecessors, (142), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-20 07:28:36,681 INFO L276 IsEmpty]: Start isEmpty. Operand 2374 states and 3104 transitions. [2022-03-20 07:28:36,685 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 400 [2022-03-20 07:28:36,685 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 07:28:36,685 INFO L499 BasicCegarLoop]: trace histogram [13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 12, 12, 12, 12, 12, 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, 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] [2022-03-20 07:28:36,685 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-03-20 07:28:36,685 INFO L403 AbstractCegarLoop]: === Iteration 18 === Targeting ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 07:28:36,686 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 07:28:36,686 INFO L85 PathProgramCache]: Analyzing trace with hash 1686734734, now seen corresponding path program 1 times [2022-03-20 07:28:36,686 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 07:28:36,686 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [92492373] [2022-03-20 07:28:36,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 07:28:36,686 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 07:28:36,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:28:36,758 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 07:28:36,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:28:36,761 INFO L134 CoverageAnalysis]: Checked inductivity of 1588 backedges. 1011 proven. 26 refuted. 0 times theorem prover too weak. 551 trivial. 0 not checked. [2022-03-20 07:28:36,762 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 07:28:36,762 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [92492373] [2022-03-20 07:28:36,762 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [92492373] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-20 07:28:36,762 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [975771775] [2022-03-20 07:28:36,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 07:28:36,762 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-20 07:28:36,762 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-20 07:28:36,763 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-20 07:28:36,791 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-03-20 07:28:36,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:28:36,900 INFO L263 TraceCheckSpWp]: Trace formula consists of 719 conjuncts, 3 conjunts are in the unsatisfiable core [2022-03-20 07:28:36,907 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-20 07:28:37,503 INFO L134 CoverageAnalysis]: Checked inductivity of 1588 backedges. 773 proven. 0 refuted. 0 times theorem prover too weak. 815 trivial. 0 not checked. [2022-03-20 07:28:37,503 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-03-20 07:28:37,504 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [975771775] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 07:28:37,504 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-03-20 07:28:37,504 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2022-03-20 07:28:37,504 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [293705752] [2022-03-20 07:28:37,504 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 07:28:37,505 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-03-20 07:28:37,505 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-20 07:28:37,505 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-03-20 07:28:37,505 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-03-20 07:28:37,505 INFO L87 Difference]: Start difference. First operand 2374 states and 3104 transitions. Second operand has 3 states, 3 states have (on average 53.333333333333336) internal successors, (160), 3 states have internal predecessors, (160), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-20 07:28:37,520 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 07:28:37,520 INFO L93 Difference]: Finished difference Result 2709 states and 3567 transitions. [2022-03-20 07:28:37,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-03-20 07:28:37,520 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 53.333333333333336) internal successors, (160), 3 states have internal predecessors, (160), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 399 [2022-03-20 07:28:37,521 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 07:28:37,525 INFO L225 Difference]: With dead ends: 2709 [2022-03-20 07:28:37,525 INFO L226 Difference]: Without dead ends: 2709 [2022-03-20 07:28:37,525 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 404 GetRequests, 400 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-03-20 07:28:37,526 INFO L913 BasicCegarLoop]: 356 mSDtfsCounter, 90 mSDsluCounter, 185 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 90 SdHoareTripleChecker+Valid, 541 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-20 07:28:37,526 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [90 Valid, 541 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-20 07:28:37,528 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2709 states. [2022-03-20 07:28:37,549 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2709 to 2238. [2022-03-20 07:28:37,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2238 states, 2233 states have (on average 1.3193013882669056) internal successors, (2946), 2233 states have internal predecessors, (2946), 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) [2022-03-20 07:28:37,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2238 states to 2238 states and 2950 transitions. [2022-03-20 07:28:37,554 INFO L78 Accepts]: Start accepts. Automaton has 2238 states and 2950 transitions. Word has length 399 [2022-03-20 07:28:37,555 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 07:28:37,555 INFO L478 AbstractCegarLoop]: Abstraction has 2238 states and 2950 transitions. [2022-03-20 07:28:37,555 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 53.333333333333336) internal successors, (160), 3 states have internal predecessors, (160), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-20 07:28:37,555 INFO L276 IsEmpty]: Start isEmpty. Operand 2238 states and 2950 transitions. [2022-03-20 07:28:37,559 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 416 [2022-03-20 07:28:37,559 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 07:28:37,559 INFO L499 BasicCegarLoop]: trace histogram [13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 12, 12, 12, 12, 12, 11, 11, 10, 10, 9, 9, 8, 8, 8, 8, 6, 6, 6, 6, 6, 6, 6, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 07:28:37,586 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-03-20 07:28:37,779 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2022-03-20 07:28:37,780 INFO L403 AbstractCegarLoop]: === Iteration 19 === Targeting ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 07:28:37,780 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 07:28:37,780 INFO L85 PathProgramCache]: Analyzing trace with hash 1130049276, now seen corresponding path program 1 times [2022-03-20 07:28:37,780 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 07:28:37,780 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [514304071] [2022-03-20 07:28:37,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 07:28:37,780 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 07:28:37,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:28:37,860 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 07:28:37,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:28:37,864 INFO L134 CoverageAnalysis]: Checked inductivity of 1704 backedges. 1045 proven. 26 refuted. 0 times theorem prover too weak. 633 trivial. 0 not checked. [2022-03-20 07:28:37,865 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 07:28:37,865 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [514304071] [2022-03-20 07:28:37,865 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [514304071] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-20 07:28:37,865 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [148780831] [2022-03-20 07:28:37,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 07:28:37,865 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-20 07:28:37,865 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-20 07:28:37,867 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-20 07:28:37,879 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-03-20 07:28:38,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:28:38,008 INFO L263 TraceCheckSpWp]: Trace formula consists of 736 conjuncts, 3 conjunts are in the unsatisfiable core [2022-03-20 07:28:38,014 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-20 07:28:38,498 INFO L134 CoverageAnalysis]: Checked inductivity of 1704 backedges. 1045 proven. 26 refuted. 0 times theorem prover too weak. 633 trivial. 0 not checked. [2022-03-20 07:28:38,499 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-20 07:28:39,015 INFO L134 CoverageAnalysis]: Checked inductivity of 1704 backedges. 1045 proven. 26 refuted. 0 times theorem prover too weak. 633 trivial. 0 not checked. [2022-03-20 07:28:39,016 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [148780831] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-20 07:28:39,016 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-20 07:28:39,016 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4, 4] total 7 [2022-03-20 07:28:39,017 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1418087955] [2022-03-20 07:28:39,017 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-20 07:28:39,019 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-03-20 07:28:39,019 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-20 07:28:39,020 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-03-20 07:28:39,020 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-03-20 07:28:39,020 INFO L87 Difference]: Start difference. First operand 2238 states and 2950 transitions. Second operand has 7 states, 7 states have (on average 34.42857142857143) internal successors, (241), 6 states have internal predecessors, (241), 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) [2022-03-20 07:28:39,550 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 07:28:39,550 INFO L93 Difference]: Finished difference Result 2891 states and 3757 transitions. [2022-03-20 07:28:39,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-03-20 07:28:39,551 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 34.42857142857143) internal successors, (241), 6 states have internal predecessors, (241), 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 415 [2022-03-20 07:28:39,551 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 07:28:39,556 INFO L225 Difference]: With dead ends: 2891 [2022-03-20 07:28:39,556 INFO L226 Difference]: Without dead ends: 2844 [2022-03-20 07:28:39,556 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 845 GetRequests, 835 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2022-03-20 07:28:39,556 INFO L913 BasicCegarLoop]: 303 mSDtfsCounter, 762 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 611 mSolverCounterSat, 102 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 762 SdHoareTripleChecker+Valid, 315 SdHoareTripleChecker+Invalid, 713 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 102 IncrementalHoareTripleChecker+Valid, 611 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-20 07:28:39,557 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [762 Valid, 315 Invalid, 713 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [102 Valid, 611 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-20 07:28:39,559 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2844 states. [2022-03-20 07:28:39,580 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2844 to 2371. [2022-03-20 07:28:39,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2371 states, 2366 states have (on average 1.323330515638208) internal successors, (3131), 2366 states have internal predecessors, (3131), 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) [2022-03-20 07:28:39,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2371 states to 2371 states and 3135 transitions. [2022-03-20 07:28:39,586 INFO L78 Accepts]: Start accepts. Automaton has 2371 states and 3135 transitions. Word has length 415 [2022-03-20 07:28:39,587 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 07:28:39,587 INFO L478 AbstractCegarLoop]: Abstraction has 2371 states and 3135 transitions. [2022-03-20 07:28:39,587 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 34.42857142857143) internal successors, (241), 6 states have internal predecessors, (241), 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) [2022-03-20 07:28:39,587 INFO L276 IsEmpty]: Start isEmpty. Operand 2371 states and 3135 transitions. [2022-03-20 07:28:39,592 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 544 [2022-03-20 07:28:39,592 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 07:28:39,592 INFO L499 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 07:28:39,619 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-03-20 07:28:39,811 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-20 07:28:39,811 INFO L403 AbstractCegarLoop]: === Iteration 20 === Targeting ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 07:28:39,811 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 07:28:39,811 INFO L85 PathProgramCache]: Analyzing trace with hash -1609780516, now seen corresponding path program 1 times [2022-03-20 07:28:39,811 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 07:28:39,812 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [502100969] [2022-03-20 07:28:39,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 07:28:39,812 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 07:28:39,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:28:39,930 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 07:28:39,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:28:39,935 INFO L134 CoverageAnalysis]: Checked inductivity of 3128 backedges. 1661 proven. 0 refuted. 0 times theorem prover too weak. 1467 trivial. 0 not checked. [2022-03-20 07:28:39,935 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 07:28:39,935 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [502100969] [2022-03-20 07:28:39,935 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [502100969] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 07:28:39,935 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 07:28:39,935 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-03-20 07:28:39,935 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1852155966] [2022-03-20 07:28:39,935 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 07:28:39,937 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-03-20 07:28:39,937 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-20 07:28:39,938 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-03-20 07:28:39,938 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-03-20 07:28:39,938 INFO L87 Difference]: Start difference. First operand 2371 states and 3135 transitions. Second operand has 4 states, 4 states have (on average 41.75) internal successors, (167), 3 states have internal predecessors, (167), 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) [2022-03-20 07:28:40,134 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 07:28:40,134 INFO L93 Difference]: Finished difference Result 2695 states and 3504 transitions. [2022-03-20 07:28:40,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-03-20 07:28:40,135 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 41.75) internal successors, (167), 3 states have internal predecessors, (167), 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 543 [2022-03-20 07:28:40,135 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 07:28:40,139 INFO L225 Difference]: With dead ends: 2695 [2022-03-20 07:28:40,139 INFO L226 Difference]: Without dead ends: 2695 [2022-03-20 07:28:40,139 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-03-20 07:28:40,140 INFO L913 BasicCegarLoop]: 208 mSDtfsCounter, 203 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 219 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 203 SdHoareTripleChecker+Valid, 215 SdHoareTripleChecker+Invalid, 234 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 219 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-20 07:28:40,140 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [203 Valid, 215 Invalid, 234 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 219 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-03-20 07:28:40,145 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2695 states. [2022-03-20 07:28:40,168 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2695 to 2677. [2022-03-20 07:28:40,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2677 states, 2672 states have (on average 1.3031437125748504) internal successors, (3482), 2672 states have internal predecessors, (3482), 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) [2022-03-20 07:28:40,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2677 states to 2677 states and 3486 transitions. [2022-03-20 07:28:40,175 INFO L78 Accepts]: Start accepts. Automaton has 2677 states and 3486 transitions. Word has length 543 [2022-03-20 07:28:40,175 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 07:28:40,175 INFO L478 AbstractCegarLoop]: Abstraction has 2677 states and 3486 transitions. [2022-03-20 07:28:40,176 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 41.75) internal successors, (167), 3 states have internal predecessors, (167), 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) [2022-03-20 07:28:40,176 INFO L276 IsEmpty]: Start isEmpty. Operand 2677 states and 3486 transitions. [2022-03-20 07:28:40,181 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 606 [2022-03-20 07:28:40,181 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 07:28:40,182 INFO L499 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] [2022-03-20 07:28:40,182 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-03-20 07:28:40,182 INFO L403 AbstractCegarLoop]: === Iteration 21 === Targeting ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 07:28:40,182 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 07:28:40,183 INFO L85 PathProgramCache]: Analyzing trace with hash -754710608, now seen corresponding path program 1 times [2022-03-20 07:28:40,183 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 07:28:40,183 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1439185021] [2022-03-20 07:28:40,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 07:28:40,183 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 07:28:40,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:28:40,286 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 07:28:40,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:28:40,293 INFO L134 CoverageAnalysis]: Checked inductivity of 4009 backedges. 2315 proven. 26 refuted. 0 times theorem prover too weak. 1668 trivial. 0 not checked. [2022-03-20 07:28:40,294 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 07:28:40,294 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1439185021] [2022-03-20 07:28:40,294 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1439185021] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-20 07:28:40,294 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1239923762] [2022-03-20 07:28:40,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 07:28:40,294 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-20 07:28:40,294 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-20 07:28:40,295 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-20 07:28:40,323 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-03-20 07:28:40,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:28:40,459 INFO L263 TraceCheckSpWp]: Trace formula consists of 994 conjuncts, 3 conjunts are in the unsatisfiable core [2022-03-20 07:28:40,467 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-20 07:28:41,162 INFO L134 CoverageAnalysis]: Checked inductivity of 4009 backedges. 2315 proven. 26 refuted. 0 times theorem prover too weak. 1668 trivial. 0 not checked. [2022-03-20 07:28:41,162 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-20 07:28:41,802 INFO L134 CoverageAnalysis]: Checked inductivity of 4009 backedges. 2315 proven. 26 refuted. 0 times theorem prover too weak. 1668 trivial. 0 not checked. [2022-03-20 07:28:41,802 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1239923762] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-20 07:28:41,803 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-20 07:28:41,803 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4, 4] total 9 [2022-03-20 07:28:41,803 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1038094288] [2022-03-20 07:28:41,803 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-20 07:28:41,804 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-03-20 07:28:41,804 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-20 07:28:41,804 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-03-20 07:28:41,804 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2022-03-20 07:28:41,805 INFO L87 Difference]: Start difference. First operand 2677 states and 3486 transitions. Second operand has 9 states, 9 states have (on average 37.22222222222222) internal successors, (335), 8 states have internal predecessors, (335), 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) [2022-03-20 07:28:42,448 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 07:28:42,449 INFO L93 Difference]: Finished difference Result 1767 states and 2264 transitions. [2022-03-20 07:28:42,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-03-20 07:28:42,449 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 37.22222222222222) internal successors, (335), 8 states have internal predecessors, (335), 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 605 [2022-03-20 07:28:42,450 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 07:28:42,450 INFO L225 Difference]: With dead ends: 1767 [2022-03-20 07:28:42,450 INFO L226 Difference]: Without dead ends: 0 [2022-03-20 07:28:42,450 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 1223 GetRequests, 1212 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=52, Invalid=104, Unknown=0, NotChecked=0, Total=156 [2022-03-20 07:28:42,451 INFO L913 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 [2022-03-20 07:28:42,451 INFO L914 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] [2022-03-20 07:28:42,451 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-03-20 07:28:42,451 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-03-20 07:28:42,451 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) [2022-03-20 07:28:42,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-03-20 07:28:42,452 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 605 [2022-03-20 07:28:42,452 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 07:28:42,452 INFO L478 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-03-20 07:28:42,452 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 37.22222222222222) internal successors, (335), 8 states have internal predecessors, (335), 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) [2022-03-20 07:28:42,452 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-03-20 07:28:42,452 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-03-20 07:28:42,454 INFO L788 garLoopResultBuilder]: Registering result SAFE for location ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-03-20 07:28:42,486 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-03-20 07:28:42,663 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-20 07:28:42,666 INFO L719 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 07:28:42,667 INFO L180 ceAbstractionStarter]: Computing trace abstraction results [2022-03-20 07:28:42,669 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.03 07:28:42 BasicIcfg [2022-03-20 07:28:42,669 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-03-20 07:28:42,669 INFO L158 Benchmark]: Toolchain (without parser) took 17203.31ms. Allocated memory was 170.9MB in the beginning and 356.5MB in the end (delta: 185.6MB). Free memory was 117.8MB in the beginning and 227.9MB in the end (delta: -110.1MB). Peak memory consumption was 75.5MB. Max. memory is 8.0GB. [2022-03-20 07:28:42,669 INFO L158 Benchmark]: CDTParser took 0.11ms. Allocated memory is still 170.9MB. Free memory is still 134.7MB. There was no memory consumed. Max. memory is 8.0GB. [2022-03-20 07:28:42,670 INFO L158 Benchmark]: CACSL2BoogieTranslator took 396.94ms. Allocated memory is still 170.9MB. Free memory was 117.6MB in the beginning and 138.3MB in the end (delta: -20.7MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. [2022-03-20 07:28:42,670 INFO L158 Benchmark]: Boogie Preprocessor took 36.88ms. Allocated memory is still 170.9MB. Free memory was 138.3MB in the beginning and 136.2MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-03-20 07:28:42,670 INFO L158 Benchmark]: RCFGBuilder took 735.61ms. Allocated memory is still 170.9MB. Free memory was 136.2MB in the beginning and 108.9MB in the end (delta: 27.3MB). Peak memory consumption was 27.3MB. Max. memory is 8.0GB. [2022-03-20 07:28:42,670 INFO L158 Benchmark]: IcfgTransformer took 48.39ms. Allocated memory is still 170.9MB. Free memory was 108.5MB in the beginning and 105.4MB in the end (delta: 3.1MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. [2022-03-20 07:28:42,671 INFO L158 Benchmark]: TraceAbstraction took 15980.35ms. Allocated memory was 170.9MB in the beginning and 356.5MB in the end (delta: 185.6MB). Free memory was 105.2MB in the beginning and 227.9MB in the end (delta: -122.8MB). Peak memory consumption was 64.4MB. Max. memory is 8.0GB. [2022-03-20 07:28:42,672 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 170.9MB. Free memory is still 134.7MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 396.94ms. Allocated memory is still 170.9MB. Free memory was 117.6MB in the beginning and 138.3MB in the end (delta: -20.7MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. * Boogie Preprocessor took 36.88ms. Allocated memory is still 170.9MB. Free memory was 138.3MB in the beginning and 136.2MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 735.61ms. Allocated memory is still 170.9MB. Free memory was 136.2MB in the beginning and 108.9MB in the end (delta: 27.3MB). Peak memory consumption was 27.3MB. Max. memory is 8.0GB. * IcfgTransformer took 48.39ms. Allocated memory is still 170.9MB. Free memory was 108.5MB in the beginning and 105.4MB in the end (delta: 3.1MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. * TraceAbstraction took 15980.35ms. Allocated memory was 170.9MB in the beginning and 356.5MB in the end (delta: 185.6MB). Free memory was 105.2MB in the beginning and 227.9MB in the end (delta: -122.8MB). Peak memory consumption was 64.4MB. 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: 619]: 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: 15.9s, OverallIterations: 21, TraceHistogramMax: 19, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.1s, AutomataDifference: 6.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 6829 SdHoareTripleChecker+Valid, 5.9s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 6827 mSDsluCounter, 6085 SdHoareTripleChecker+Invalid, 4.8s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 367 mSDsCounter, 617 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 7600 IncrementalHoareTripleChecker+Invalid, 8217 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 617 mSolverCounterUnsat, 5718 mSDtfsCounter, 7600 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 3610 GetRequests, 3515 SyntacticMatches, 0 SemanticMatches, 95 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=6508occurred in iteration=14, InterpolantAutomatonStates: 100, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.7s AutomataMinimizationTime, 21 MinimizatonAttempts, 3861 StatesRemovedByMinimization, 15 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 0.7s SatisfiabilityAnalysisTime, 5.7s InterpolantComputationTime, 6979 NumberOfCodeBlocks, 6979 NumberOfCodeBlocksAsserted, 26 NumberOfCheckSat, 8466 ConstructedInterpolants, 0 QuantifiedInterpolants, 12147 SizeOfPredicates, 4 NumberOfNonLiveVariables, 3465 ConjunctsInSsa, 15 ConjunctsInUnsatCore, 30 InterpolantComputations, 17 PerfectInterpolantSequences, 31324/31632 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! [2022-03-20 07:28:42,701 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...