/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/AutomizerC.xml -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationJordan_32.epf -i ../../../trunk/examples/svcomp/openssl-simplified/s3_srvr_7.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-6c470ae [2022-02-15 02:47:05,888 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-02-15 02:47:05,889 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-02-15 02:47:05,928 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-02-15 02:47:05,960 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-02-15 02:47:05,961 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-02-15 02:47:05,961 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-02-15 02:47:05,968 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationJordan_32.epf [2022-02-15 02:47:05,974 INFO L113 SettingsManager]: Loading preferences was successful [2022-02-15 02:47:05,974 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-02-15 02:47:05,975 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-02-15 02:47:05,975 INFO L138 SettingsManager]: * sizeof long=4 [2022-02-15 02:47:05,975 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-02-15 02:47:05,975 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-02-15 02:47:05,975 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-02-15 02:47:05,975 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-02-15 02:47:05,975 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-02-15 02:47:05,976 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-02-15 02:47:05,976 INFO L138 SettingsManager]: * sizeof long double=12 [2022-02-15 02:47:05,976 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-02-15 02:47:05,976 INFO L138 SettingsManager]: * Use constant arrays=true [2022-02-15 02:47:05,976 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-02-15 02:47:05,976 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-02-15 02:47:05,976 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-02-15 02:47:05,976 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-02-15 02:47:05,976 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-02-15 02:47:05,977 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-02-15 02:47:05,977 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-02-15 02:47:05,977 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2022-02-15 02:47:05,977 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-02-15 02:47:05,977 INFO L138 SettingsManager]: * Loop acceleration method that is used by accelerated interpolation=JORDAN [2022-02-15 02:47:05,977 INFO L138 SettingsManager]: * Use separate solver for trace checks=false 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-02-15 02:47:06,174 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-02-15 02:47:06,193 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-02-15 02:47:06,195 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-02-15 02:47:06,196 INFO L271 PluginConnector]: Initializing CDTParser... [2022-02-15 02:47:06,198 INFO L275 PluginConnector]: CDTParser initialized [2022-02-15 02:47:06,198 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/openssl-simplified/s3_srvr_7.cil.c [2022-02-15 02:47:06,242 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bbdf572b0/d93b81aa864d44e083725908fc2c5920/FLAGde3082c74 [2022-02-15 02:47:06,568 INFO L306 CDTParser]: Found 1 translation units. [2022-02-15 02:47:06,569 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/openssl-simplified/s3_srvr_7.cil.c [2022-02-15 02:47:06,582 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bbdf572b0/d93b81aa864d44e083725908fc2c5920/FLAGde3082c74 [2022-02-15 02:47:06,974 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bbdf572b0/d93b81aa864d44e083725908fc2c5920 [2022-02-15 02:47:06,976 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-02-15 02:47:06,977 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2022-02-15 02:47:06,978 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-02-15 02:47:06,978 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-02-15 02:47:06,983 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-02-15 02:47:06,984 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.02 02:47:06" (1/1) ... [2022-02-15 02:47:06,984 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6029cdfe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 02:47:06, skipping insertion in model container [2022-02-15 02:47:06,984 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.02 02:47:06" (1/1) ... [2022-02-15 02:47:06,988 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-02-15 02:47:07,021 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-02-15 02:47:07,193 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_7.cil.c[44376,44389] [2022-02-15 02:47:07,201 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-02-15 02:47:07,206 INFO L203 MainTranslator]: Completed pre-run [2022-02-15 02:47:07,245 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_7.cil.c[44376,44389] [2022-02-15 02:47:07,247 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-02-15 02:47:07,255 INFO L208 MainTranslator]: Completed translation [2022-02-15 02:47:07,259 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 02:47:07 WrapperNode [2022-02-15 02:47:07,259 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-02-15 02:47:07,260 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-02-15 02:47:07,260 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-02-15 02:47:07,260 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-02-15 02:47:07,274 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 02:47:07" (1/1) ... [2022-02-15 02:47:07,274 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 02:47:07" (1/1) ... [2022-02-15 02:47:07,280 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 02:47:07" (1/1) ... [2022-02-15 02:47:07,280 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 02:47:07" (1/1) ... [2022-02-15 02:47:07,287 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 02:47:07" (1/1) ... [2022-02-15 02:47:07,298 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 02:47:07" (1/1) ... [2022-02-15 02:47:07,300 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 02:47:07" (1/1) ... [2022-02-15 02:47:07,302 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-02-15 02:47:07,303 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-02-15 02:47:07,303 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-02-15 02:47:07,303 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-02-15 02:47:07,304 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 02:47:07" (1/1) ... [2022-02-15 02:47:07,316 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-02-15 02:47:07,325 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-15 02:47:07,334 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) [2022-02-15 02:47:07,354 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 [2022-02-15 02:47:07,366 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2022-02-15 02:47:07,367 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-02-15 02:47:07,367 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2022-02-15 02:47:07,367 INFO L138 BoogieDeclarations]: Found implementation of procedure ssl3_accept [2022-02-15 02:47:07,367 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2022-02-15 02:47:07,367 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2022-02-15 02:47:07,367 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2022-02-15 02:47:07,368 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2022-02-15 02:47:07,368 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-02-15 02:47:07,368 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2022-02-15 02:47:07,368 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2022-02-15 02:47:07,369 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_long [2022-02-15 02:47:07,369 INFO L130 BoogieDeclarations]: Found specification of procedure ssl3_accept [2022-02-15 02:47:07,369 INFO L130 BoogieDeclarations]: Found specification of procedure main [2022-02-15 02:47:07,370 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2022-02-15 02:47:07,371 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-02-15 02:47:07,371 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-02-15 02:47:07,371 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-02-15 02:47:07,371 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-02-15 02:47:07,372 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-02-15 02:47:07,433 INFO L234 CfgBuilder]: Building ICFG [2022-02-15 02:47:07,434 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-02-15 02:47:07,536 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-02-15 02:47:07,872 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##90: assume false; [2022-02-15 02:47:07,872 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##91: assume !false; [2022-02-15 02:47:07,881 INFO L275 CfgBuilder]: Performing block encoding [2022-02-15 02:47:07,889 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-02-15 02:47:07,889 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-02-15 02:47:07,891 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.02 02:47:07 BoogieIcfgContainer [2022-02-15 02:47:07,891 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-02-15 02:47:07,892 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-02-15 02:47:07,892 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-02-15 02:47:07,896 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-02-15 02:47:07,896 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.02 02:47:06" (1/3) ... [2022-02-15 02:47:07,897 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2c0a9731 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.02 02:47:07, skipping insertion in model container [2022-02-15 02:47:07,897 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 02:47:07" (2/3) ... [2022-02-15 02:47:07,898 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2c0a9731 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.02 02:47:07, skipping insertion in model container [2022-02-15 02:47:07,898 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.02 02:47:07" (3/3) ... [2022-02-15 02:47:07,899 INFO L111 eAbstractionObserver]: Analyzing ICFG s3_srvr_7.cil.c [2022-02-15 02:47:07,903 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2022-02-15 02:47:07,903 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-02-15 02:47:07,939 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-02-15 02:47:07,946 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=AcceleratedInterpolation, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=JORDAN [2022-02-15 02:47:07,946 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-02-15 02:47:07,964 INFO L276 IsEmpty]: Start isEmpty. Operand has 155 states, 147 states have (on average 1.7210884353741496) internal successors, (253), 148 states have internal predecessors, (253), 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) [2022-02-15 02:47:07,977 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2022-02-15 02:47:07,977 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 02:47:07,978 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 02:47:07,978 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 02:47:07,982 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 02:47:07,982 INFO L85 PathProgramCache]: Analyzing trace with hash 657014833, now seen corresponding path program 1 times [2022-02-15 02:47:07,987 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 02:47:07,988 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [873972324] [2022-02-15 02:47:07,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 02:47:07,996 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 02:47:08,028 INFO L274 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-15 02:47:08,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:47:08,162 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 02:47:08,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:47:08,176 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 02:47:08,177 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 02:47:08,177 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [873972324] [2022-02-15 02:47:08,178 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [873972324] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 02:47:08,178 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 02:47:08,178 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-02-15 02:47:08,179 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [244894740] [2022-02-15 02:47:08,179 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 02:47:08,182 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-02-15 02:47:08,182 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 02:47:08,205 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-02-15 02:47:08,206 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-02-15 02:47:08,210 INFO L87 Difference]: Start difference. First operand has 155 states, 147 states have (on average 1.7210884353741496) internal successors, (253), 148 states have internal predecessors, (253), 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 8.75) internal successors, (35), 3 states have internal predecessors, (35), 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) [2022-02-15 02:47:08,584 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 02:47:08,584 INFO L93 Difference]: Finished difference Result 429 states and 731 transitions. [2022-02-15 02:47:08,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-02-15 02:47:08,587 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.75) internal successors, (35), 3 states have internal predecessors, (35), 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 39 [2022-02-15 02:47:08,587 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 02:47:08,603 INFO L225 Difference]: With dead ends: 429 [2022-02-15 02:47:08,604 INFO L226 Difference]: Without dead ends: 261 [2022-02-15 02:47:08,607 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-02-15 02:47:08,609 INFO L933 BasicCegarLoop]: 245 mSDtfsCounter, 665 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 251 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 667 SdHoareTripleChecker+Valid, 254 SdHoareTripleChecker+Invalid, 263 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 251 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-02-15 02:47:08,610 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [667 Valid, 254 Invalid, 263 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 251 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-02-15 02:47:08,622 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 261 states. [2022-02-15 02:47:08,661 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 261 to 261. [2022-02-15 02:47:08,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 261 states, 256 states have (on average 1.5234375) internal successors, (390), 256 states have internal predecessors, (390), 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) [2022-02-15 02:47:08,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 261 states to 261 states and 394 transitions. [2022-02-15 02:47:08,664 INFO L78 Accepts]: Start accepts. Automaton has 261 states and 394 transitions. Word has length 39 [2022-02-15 02:47:08,665 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 02:47:08,665 INFO L470 AbstractCegarLoop]: Abstraction has 261 states and 394 transitions. [2022-02-15 02:47:08,665 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.75) internal successors, (35), 3 states have internal predecessors, (35), 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) [2022-02-15 02:47:08,665 INFO L276 IsEmpty]: Start isEmpty. Operand 261 states and 394 transitions. [2022-02-15 02:47:08,671 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2022-02-15 02:47:08,671 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 02:47:08,671 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 02:47:08,671 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-02-15 02:47:08,672 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 02:47:08,672 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 02:47:08,672 INFO L85 PathProgramCache]: Analyzing trace with hash 1480272050, now seen corresponding path program 1 times [2022-02-15 02:47:08,672 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 02:47:08,673 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1044986642] [2022-02-15 02:47:08,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 02:47:09,264 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 8 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=6, 2=1}, 1={1=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:47:09,265 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-02-15 02:47:09,265 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 02:47:09,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:47:09,389 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 02:47:09,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:47:09,403 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 02:47:10,052 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 02:47:10,052 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1044986642] [2022-02-15 02:47:10,053 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1044986642] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 02:47:10,053 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 02:47:10,053 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2022-02-15 02:47:10,053 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1748029015] [2022-02-15 02:47:10,053 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 02:47:10,054 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-02-15 02:47:10,054 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 02:47:10,054 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-02-15 02:47:10,054 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=202, Unknown=0, NotChecked=0, Total=272 [2022-02-15 02:47:10,055 INFO L87 Difference]: Start difference. First operand 261 states and 394 transitions. Second operand has 17 states, 16 states have (on average 3.1875) internal successors, (51), 15 states have internal predecessors, (51), 2 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) [2022-02-15 02:47:10,594 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 02:47:10,594 INFO L93 Difference]: Finished difference Result 569 states and 873 transitions. [2022-02-15 02:47:10,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-02-15 02:47:10,595 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 3.1875) internal successors, (51), 15 states have internal predecessors, (51), 2 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) Word has length 55 [2022-02-15 02:47:10,595 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 02:47:10,596 INFO L225 Difference]: With dead ends: 569 [2022-02-15 02:47:10,596 INFO L226 Difference]: Without dead ends: 322 [2022-02-15 02:47:10,598 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 13 SyntacticMatches, 6 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 173 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=160, Invalid=596, Unknown=0, NotChecked=0, Total=756 [2022-02-15 02:47:10,598 INFO L933 BasicCegarLoop]: 192 mSDtfsCounter, 240 mSDsluCounter, 66 mSDsCounter, 0 mSdLazyCounter, 684 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 240 SdHoareTripleChecker+Valid, 258 SdHoareTripleChecker+Invalid, 953 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 684 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 247 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-02-15 02:47:10,599 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [240 Valid, 258 Invalid, 953 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 684 Invalid, 0 Unknown, 247 Unchecked, 0.4s Time] [2022-02-15 02:47:10,600 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 322 states. [2022-02-15 02:47:10,615 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 322 to 313. [2022-02-15 02:47:10,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 313 states, 308 states have (on average 1.5162337662337662) internal successors, (467), 308 states have internal predecessors, (467), 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) [2022-02-15 02:47:10,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 313 states to 313 states and 471 transitions. [2022-02-15 02:47:10,616 INFO L78 Accepts]: Start accepts. Automaton has 313 states and 471 transitions. Word has length 55 [2022-02-15 02:47:10,616 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 02:47:10,616 INFO L470 AbstractCegarLoop]: Abstraction has 313 states and 471 transitions. [2022-02-15 02:47:10,617 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 16 states have (on average 3.1875) internal successors, (51), 15 states have internal predecessors, (51), 2 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) [2022-02-15 02:47:10,617 INFO L276 IsEmpty]: Start isEmpty. Operand 313 states and 471 transitions. [2022-02-15 02:47:10,618 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2022-02-15 02:47:10,618 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 02:47:10,618 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 02:47:10,618 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-02-15 02:47:10,618 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 02:47:10,618 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 02:47:10,619 INFO L85 PathProgramCache]: Analyzing trace with hash 405741992, now seen corresponding path program 1 times [2022-02-15 02:47:10,619 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 02:47:10,619 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [523382485] [2022-02-15 02:47:10,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 02:47:11,035 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 8 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=6, 2=1}, 1={1=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:47:11,035 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-02-15 02:47:11,036 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 02:47:11,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:47:11,099 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 02:47:11,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:47:11,106 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 02:47:11,656 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 02:47:11,656 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [523382485] [2022-02-15 02:47:11,656 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [523382485] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 02:47:11,656 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 02:47:11,657 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2022-02-15 02:47:11,657 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [673417724] [2022-02-15 02:47:11,657 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 02:47:11,657 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-02-15 02:47:11,657 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 02:47:11,657 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-02-15 02:47:11,658 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=202, Unknown=0, NotChecked=0, Total=272 [2022-02-15 02:47:11,658 INFO L87 Difference]: Start difference. First operand 313 states and 471 transitions. Second operand has 17 states, 16 states have (on average 3.25) internal successors, (52), 15 states have internal predecessors, (52), 2 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) [2022-02-15 02:47:12,211 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 02:47:12,211 INFO L93 Difference]: Finished difference Result 614 states and 943 transitions. [2022-02-15 02:47:12,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-02-15 02:47:12,212 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 3.25) internal successors, (52), 15 states have internal predecessors, (52), 2 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) Word has length 56 [2022-02-15 02:47:12,212 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 02:47:12,213 INFO L225 Difference]: With dead ends: 614 [2022-02-15 02:47:12,213 INFO L226 Difference]: Without dead ends: 367 [2022-02-15 02:47:12,214 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 13 SyntacticMatches, 6 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 195 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=228, Invalid=702, Unknown=0, NotChecked=0, Total=930 [2022-02-15 02:47:12,215 INFO L933 BasicCegarLoop]: 225 mSDtfsCounter, 435 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 481 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 435 SdHoareTripleChecker+Valid, 262 SdHoareTripleChecker+Invalid, 753 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 481 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 261 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-02-15 02:47:12,215 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [435 Valid, 262 Invalid, 753 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 481 Invalid, 0 Unknown, 261 Unchecked, 0.3s Time] [2022-02-15 02:47:12,216 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 367 states. [2022-02-15 02:47:12,232 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 367 to 314. [2022-02-15 02:47:12,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 314 states, 309 states have (on average 1.5177993527508091) internal successors, (469), 309 states have internal predecessors, (469), 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) [2022-02-15 02:47:12,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 314 states to 314 states and 473 transitions. [2022-02-15 02:47:12,234 INFO L78 Accepts]: Start accepts. Automaton has 314 states and 473 transitions. Word has length 56 [2022-02-15 02:47:12,234 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 02:47:12,235 INFO L470 AbstractCegarLoop]: Abstraction has 314 states and 473 transitions. [2022-02-15 02:47:12,235 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 16 states have (on average 3.25) internal successors, (52), 15 states have internal predecessors, (52), 2 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) [2022-02-15 02:47:12,235 INFO L276 IsEmpty]: Start isEmpty. Operand 314 states and 473 transitions. [2022-02-15 02:47:12,236 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2022-02-15 02:47:12,236 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 02:47:12,236 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 02:47:12,236 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-02-15 02:47:12,236 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 02:47:12,236 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 02:47:12,237 INFO L85 PathProgramCache]: Analyzing trace with hash 1299228330, now seen corresponding path program 1 times [2022-02-15 02:47:12,237 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 02:47:12,237 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2074253002] [2022-02-15 02:47:12,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 02:47:12,619 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 8 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=6, 2=1}, 1={1=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:47:12,619 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-02-15 02:47:12,619 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 02:47:12,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:47:12,666 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 02:47:12,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:47:12,670 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 02:47:13,179 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 02:47:13,180 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2074253002] [2022-02-15 02:47:13,180 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [2074253002] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 02:47:13,180 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 02:47:13,180 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2022-02-15 02:47:13,180 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1731646030] [2022-02-15 02:47:13,180 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 02:47:13,180 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-02-15 02:47:13,181 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 02:47:13,181 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-02-15 02:47:13,181 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=202, Unknown=0, NotChecked=0, Total=272 [2022-02-15 02:47:13,181 INFO L87 Difference]: Start difference. First operand 314 states and 473 transitions. Second operand has 17 states, 16 states have (on average 3.25) internal successors, (52), 15 states have internal predecessors, (52), 2 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) [2022-02-15 02:47:13,754 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 02:47:13,754 INFO L93 Difference]: Finished difference Result 708 states and 1096 transitions. [2022-02-15 02:47:13,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-02-15 02:47:13,754 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 3.25) internal successors, (52), 15 states have internal predecessors, (52), 2 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) Word has length 56 [2022-02-15 02:47:13,755 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 02:47:13,756 INFO L225 Difference]: With dead ends: 708 [2022-02-15 02:47:13,756 INFO L226 Difference]: Without dead ends: 437 [2022-02-15 02:47:13,757 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 12 SyntacticMatches, 6 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 187 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=228, Invalid=702, Unknown=0, NotChecked=0, Total=930 [2022-02-15 02:47:13,758 INFO L933 BasicCegarLoop]: 183 mSDtfsCounter, 664 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 560 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 664 SdHoareTripleChecker+Valid, 205 SdHoareTripleChecker+Invalid, 969 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 560 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 357 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-02-15 02:47:13,758 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [664 Valid, 205 Invalid, 969 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 560 Invalid, 0 Unknown, 357 Unchecked, 0.3s Time] [2022-02-15 02:47:13,759 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 437 states. [2022-02-15 02:47:13,787 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 437 to 366. [2022-02-15 02:47:13,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 366 states, 361 states have (on average 1.4570637119113574) internal successors, (526), 361 states have internal predecessors, (526), 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) [2022-02-15 02:47:13,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 366 states to 366 states and 530 transitions. [2022-02-15 02:47:13,789 INFO L78 Accepts]: Start accepts. Automaton has 366 states and 530 transitions. Word has length 56 [2022-02-15 02:47:13,790 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 02:47:13,790 INFO L470 AbstractCegarLoop]: Abstraction has 366 states and 530 transitions. [2022-02-15 02:47:13,790 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 16 states have (on average 3.25) internal successors, (52), 15 states have internal predecessors, (52), 2 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) [2022-02-15 02:47:13,790 INFO L276 IsEmpty]: Start isEmpty. Operand 366 states and 530 transitions. [2022-02-15 02:47:13,814 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2022-02-15 02:47:13,814 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 02:47:13,814 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 02:47:13,814 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-02-15 02:47:13,815 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 02:47:13,815 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 02:47:13,815 INFO L85 PathProgramCache]: Analyzing trace with hash 461892214, now seen corresponding path program 1 times [2022-02-15 02:47:13,815 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 02:47:13,815 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1595478583] [2022-02-15 02:47:13,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 02:47:13,876 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 6 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=4, 2=1}, 1={1=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:47:13,877 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-02-15 02:47:13,938 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 6 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=4, 2=1}, 1={1=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:47:14,331 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 8 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=6, 2=1}, 1={1=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:47:14,332 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2022-02-15 02:47:14,332 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 02:47:14,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:47:14,389 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 02:47:14,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:47:14,392 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 02:47:14,723 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 02:47:14,723 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1595478583] [2022-02-15 02:47:14,724 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1595478583] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 02:47:14,724 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 02:47:14,724 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-02-15 02:47:14,724 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [294193616] [2022-02-15 02:47:14,724 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 02:47:14,724 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-02-15 02:47:14,724 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 02:47:14,725 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-02-15 02:47:14,725 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=341, Unknown=0, NotChecked=0, Total=420 [2022-02-15 02:47:14,725 INFO L87 Difference]: Start difference. First operand 366 states and 530 transitions. Second operand has 21 states, 20 states have (on average 3.6) internal successors, (72), 19 states have internal predecessors, (72), 2 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) [2022-02-15 02:47:16,008 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 02:47:16,009 INFO L93 Difference]: Finished difference Result 830 states and 1181 transitions. [2022-02-15 02:47:16,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-02-15 02:47:16,009 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 20 states have (on average 3.6) internal successors, (72), 19 states have internal predecessors, (72), 2 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) Word has length 76 [2022-02-15 02:47:16,009 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 02:47:16,011 INFO L225 Difference]: With dead ends: 830 [2022-02-15 02:47:16,011 INFO L226 Difference]: Without dead ends: 497 [2022-02-15 02:47:16,012 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 36 SyntacticMatches, 1 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 343 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=263, Invalid=1219, Unknown=0, NotChecked=0, Total=1482 [2022-02-15 02:47:16,018 INFO L933 BasicCegarLoop]: 204 mSDtfsCounter, 884 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 2423 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 884 SdHoareTripleChecker+Valid, 256 SdHoareTripleChecker+Invalid, 2475 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 2423 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-02-15 02:47:16,019 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [884 Valid, 256 Invalid, 2475 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 2423 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-02-15 02:47:16,020 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 497 states. [2022-02-15 02:47:16,039 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 497 to 393. [2022-02-15 02:47:16,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 393 states, 388 states have (on average 1.4329896907216495) internal successors, (556), 388 states have internal predecessors, (556), 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) [2022-02-15 02:47:16,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 393 states to 393 states and 560 transitions. [2022-02-15 02:47:16,045 INFO L78 Accepts]: Start accepts. Automaton has 393 states and 560 transitions. Word has length 76 [2022-02-15 02:47:16,045 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 02:47:16,045 INFO L470 AbstractCegarLoop]: Abstraction has 393 states and 560 transitions. [2022-02-15 02:47:16,045 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 20 states have (on average 3.6) internal successors, (72), 19 states have internal predecessors, (72), 2 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) [2022-02-15 02:47:16,046 INFO L276 IsEmpty]: Start isEmpty. Operand 393 states and 560 transitions. [2022-02-15 02:47:16,047 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2022-02-15 02:47:16,047 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 02:47:16,047 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 02:47:16,047 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-02-15 02:47:16,047 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 02:47:16,048 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 02:47:16,048 INFO L85 PathProgramCache]: Analyzing trace with hash 1163492088, now seen corresponding path program 1 times [2022-02-15 02:47:16,048 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 02:47:16,049 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1194893830] [2022-02-15 02:47:16,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 02:47:16,110 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 6 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=4, 2=1}, 1={1=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:47:16,111 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-02-15 02:47:16,509 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 8 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=6, 2=1}, 1={1=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:47:16,572 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 6 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=4, 2=1}, 1={1=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:47:16,573 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2022-02-15 02:47:16,573 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 02:47:16,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:47:16,623 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 02:47:16,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:47:16,634 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 02:47:17,357 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 02:47:17,357 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1194893830] [2022-02-15 02:47:17,357 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1194893830] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 02:47:17,357 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 02:47:17,357 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [23] imperfect sequences [] total 23 [2022-02-15 02:47:17,358 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1582460277] [2022-02-15 02:47:17,358 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 02:47:17,358 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-02-15 02:47:17,358 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 02:47:17,358 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-02-15 02:47:17,359 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=401, Unknown=0, NotChecked=0, Total=506 [2022-02-15 02:47:17,359 INFO L87 Difference]: Start difference. First operand 393 states and 560 transitions. Second operand has 23 states, 22 states have (on average 3.272727272727273) internal successors, (72), 21 states have internal predecessors, (72), 2 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) [2022-02-15 02:47:18,720 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 02:47:18,720 INFO L93 Difference]: Finished difference Result 996 states and 1458 transitions. [2022-02-15 02:47:18,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-02-15 02:47:18,721 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 22 states have (on average 3.272727272727273) internal successors, (72), 21 states have internal predecessors, (72), 2 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) Word has length 76 [2022-02-15 02:47:18,721 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 02:47:18,723 INFO L225 Difference]: With dead ends: 996 [2022-02-15 02:47:18,723 INFO L226 Difference]: Without dead ends: 593 [2022-02-15 02:47:18,724 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 29 SyntacticMatches, 6 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 460 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=334, Invalid=1388, Unknown=0, NotChecked=0, Total=1722 [2022-02-15 02:47:18,724 INFO L933 BasicCegarLoop]: 202 mSDtfsCounter, 1023 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 2365 mSolverCounterSat, 95 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1023 SdHoareTripleChecker+Valid, 244 SdHoareTripleChecker+Invalid, 3392 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 95 IncrementalHoareTripleChecker+Valid, 2365 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 932 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-02-15 02:47:18,724 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1023 Valid, 244 Invalid, 3392 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [95 Valid, 2365 Invalid, 0 Unknown, 932 Unchecked, 1.0s Time] [2022-02-15 02:47:18,725 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 593 states. [2022-02-15 02:47:18,748 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 593 to 484. [2022-02-15 02:47:18,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 484 states, 479 states have (on average 1.4697286012526096) internal successors, (704), 479 states have internal predecessors, (704), 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) [2022-02-15 02:47:18,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 484 states to 484 states and 708 transitions. [2022-02-15 02:47:18,750 INFO L78 Accepts]: Start accepts. Automaton has 484 states and 708 transitions. Word has length 76 [2022-02-15 02:47:18,750 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 02:47:18,750 INFO L470 AbstractCegarLoop]: Abstraction has 484 states and 708 transitions. [2022-02-15 02:47:18,750 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 22 states have (on average 3.272727272727273) internal successors, (72), 21 states have internal predecessors, (72), 2 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) [2022-02-15 02:47:18,750 INFO L276 IsEmpty]: Start isEmpty. Operand 484 states and 708 transitions. [2022-02-15 02:47:18,751 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-02-15 02:47:18,751 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 02:47:18,751 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 02:47:18,751 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-02-15 02:47:18,752 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 02:47:18,752 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 02:47:18,752 INFO L85 PathProgramCache]: Analyzing trace with hash -246271637, now seen corresponding path program 1 times [2022-02-15 02:47:18,752 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 02:47:18,752 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [445096164] [2022-02-15 02:47:18,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 02:47:18,817 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 6 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=4, 2=1}, 1={1=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:47:18,817 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-02-15 02:47:18,877 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 6 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=4, 2=1}, 1={1=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:47:19,258 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 8 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=6, 2=1}, 1={1=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:47:19,259 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2022-02-15 02:47:19,259 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 02:47:19,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:47:19,300 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 02:47:19,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:47:19,320 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 02:47:19,631 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 02:47:19,631 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [445096164] [2022-02-15 02:47:19,631 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [445096164] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 02:47:19,632 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 02:47:19,632 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-02-15 02:47:19,632 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1845783906] [2022-02-15 02:47:19,632 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 02:47:19,632 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-02-15 02:47:19,632 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 02:47:19,632 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-02-15 02:47:19,633 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=378, Unknown=0, NotChecked=0, Total=462 [2022-02-15 02:47:19,633 INFO L87 Difference]: Start difference. First operand 484 states and 708 transitions. Second operand has 22 states, 21 states have (on average 3.4761904761904763) internal successors, (73), 20 states have internal predecessors, (73), 2 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) [2022-02-15 02:47:20,886 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 02:47:20,886 INFO L93 Difference]: Finished difference Result 872 states and 1243 transitions. [2022-02-15 02:47:20,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-02-15 02:47:20,886 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 21 states have (on average 3.4761904761904763) internal successors, (73), 20 states have internal predecessors, (73), 2 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) Word has length 77 [2022-02-15 02:47:20,887 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 02:47:20,888 INFO L225 Difference]: With dead ends: 872 [2022-02-15 02:47:20,888 INFO L226 Difference]: Without dead ends: 612 [2022-02-15 02:47:20,889 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 394 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=280, Invalid=1360, Unknown=0, NotChecked=0, Total=1640 [2022-02-15 02:47:20,890 INFO L933 BasicCegarLoop]: 216 mSDtfsCounter, 932 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 2200 mSolverCounterSat, 65 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 932 SdHoareTripleChecker+Valid, 253 SdHoareTripleChecker+Invalid, 2265 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 2200 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-02-15 02:47:20,890 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [932 Valid, 253 Invalid, 2265 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [65 Valid, 2200 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-02-15 02:47:20,891 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 612 states. [2022-02-15 02:47:20,924 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 612 to 509. [2022-02-15 02:47:20,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 509 states, 504 states have (on average 1.4523809523809523) internal successors, (732), 504 states have internal predecessors, (732), 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) [2022-02-15 02:47:20,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 509 states to 509 states and 736 transitions. [2022-02-15 02:47:20,926 INFO L78 Accepts]: Start accepts. Automaton has 509 states and 736 transitions. Word has length 77 [2022-02-15 02:47:20,927 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 02:47:20,927 INFO L470 AbstractCegarLoop]: Abstraction has 509 states and 736 transitions. [2022-02-15 02:47:20,927 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 21 states have (on average 3.4761904761904763) internal successors, (73), 20 states have internal predecessors, (73), 2 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) [2022-02-15 02:47:20,927 INFO L276 IsEmpty]: Start isEmpty. Operand 509 states and 736 transitions. [2022-02-15 02:47:20,933 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2022-02-15 02:47:20,933 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 02:47:20,933 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 02:47:20,933 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-02-15 02:47:20,933 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 02:47:20,934 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 02:47:20,934 INFO L85 PathProgramCache]: Analyzing trace with hash -985067561, now seen corresponding path program 1 times [2022-02-15 02:47:20,934 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 02:47:20,934 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [614323762] [2022-02-15 02:47:20,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 02:47:20,999 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 6 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=4, 2=1}, 1={1=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:47:21,000 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-02-15 02:47:21,068 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 6 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=4, 2=1}, 1={1=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:47:21,467 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 8 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=6, 2=1}, 1={1=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:47:21,468 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2022-02-15 02:47:21,468 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 02:47:21,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:47:21,541 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 02:47:21,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:47:21,544 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 02:47:21,914 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 02:47:21,914 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [614323762] [2022-02-15 02:47:21,914 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [614323762] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 02:47:21,914 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 02:47:21,915 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [24] imperfect sequences [] total 24 [2022-02-15 02:47:21,915 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [141478253] [2022-02-15 02:47:21,915 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 02:47:21,915 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-02-15 02:47:21,915 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 02:47:21,915 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-02-15 02:47:21,916 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=461, Unknown=0, NotChecked=0, Total=552 [2022-02-15 02:47:21,916 INFO L87 Difference]: Start difference. First operand 509 states and 736 transitions. Second operand has 24 states, 23 states have (on average 3.3043478260869565) internal successors, (76), 22 states have internal predecessors, (76), 2 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) [2022-02-15 02:47:23,216 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 02:47:23,216 INFO L93 Difference]: Finished difference Result 899 states and 1265 transitions. [2022-02-15 02:47:23,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-02-15 02:47:23,217 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 23 states have (on average 3.3043478260869565) internal successors, (76), 22 states have internal predecessors, (76), 2 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) Word has length 80 [2022-02-15 02:47:23,217 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 02:47:23,219 INFO L225 Difference]: With dead ends: 899 [2022-02-15 02:47:23,219 INFO L226 Difference]: Without dead ends: 612 [2022-02-15 02:47:23,220 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 37 SyntacticMatches, 1 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 525 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=305, Invalid=1675, Unknown=0, NotChecked=0, Total=1980 [2022-02-15 02:47:23,220 INFO L933 BasicCegarLoop]: 216 mSDtfsCounter, 844 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 2439 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 844 SdHoareTripleChecker+Valid, 263 SdHoareTripleChecker+Invalid, 2486 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 2439 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-02-15 02:47:23,220 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [844 Valid, 263 Invalid, 2486 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 2439 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-02-15 02:47:23,221 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 612 states. [2022-02-15 02:47:23,251 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 612 to 509. [2022-02-15 02:47:23,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 509 states, 504 states have (on average 1.4503968253968254) internal successors, (731), 504 states have internal predecessors, (731), 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) [2022-02-15 02:47:23,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 509 states to 509 states and 735 transitions. [2022-02-15 02:47:23,253 INFO L78 Accepts]: Start accepts. Automaton has 509 states and 735 transitions. Word has length 80 [2022-02-15 02:47:23,253 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 02:47:23,253 INFO L470 AbstractCegarLoop]: Abstraction has 509 states and 735 transitions. [2022-02-15 02:47:23,254 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 23 states have (on average 3.3043478260869565) internal successors, (76), 22 states have internal predecessors, (76), 2 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) [2022-02-15 02:47:23,254 INFO L276 IsEmpty]: Start isEmpty. Operand 509 states and 735 transitions. [2022-02-15 02:47:23,255 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2022-02-15 02:47:23,255 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 02:47:23,255 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 02:47:23,255 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-02-15 02:47:23,255 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 02:47:23,255 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 02:47:23,255 INFO L85 PathProgramCache]: Analyzing trace with hash 670614596, now seen corresponding path program 1 times [2022-02-15 02:47:23,255 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 02:47:23,255 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [593531231] [2022-02-15 02:47:23,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 02:47:23,335 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 6 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=4, 2=1}, 1={1=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:47:23,336 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-02-15 02:47:23,395 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 6 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=4, 2=1}, 1={1=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:47:23,778 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 8 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=6, 2=1}, 1={1=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:47:23,778 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2022-02-15 02:47:23,779 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 02:47:23,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:47:23,830 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 02:47:23,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:47:23,833 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 02:47:24,229 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 02:47:24,229 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [593531231] [2022-02-15 02:47:24,229 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [593531231] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 02:47:24,229 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 02:47:24,229 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [24] imperfect sequences [] total 24 [2022-02-15 02:47:24,229 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [73757091] [2022-02-15 02:47:24,229 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 02:47:24,230 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-02-15 02:47:24,230 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 02:47:24,230 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-02-15 02:47:24,230 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=455, Unknown=0, NotChecked=0, Total=552 [2022-02-15 02:47:24,230 INFO L87 Difference]: Start difference. First operand 509 states and 735 transitions. Second operand has 24 states, 23 states have (on average 3.3043478260869565) internal successors, (76), 22 states have internal predecessors, (76), 2 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) [2022-02-15 02:47:25,536 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 02:47:25,536 INFO L93 Difference]: Finished difference Result 923 states and 1298 transitions. [2022-02-15 02:47:25,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-02-15 02:47:25,537 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 23 states have (on average 3.3043478260869565) internal successors, (76), 22 states have internal predecessors, (76), 2 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) Word has length 80 [2022-02-15 02:47:25,537 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 02:47:25,541 INFO L225 Difference]: With dead ends: 923 [2022-02-15 02:47:25,541 INFO L226 Difference]: Without dead ends: 638 [2022-02-15 02:47:25,542 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 486 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=323, Invalid=1657, Unknown=0, NotChecked=0, Total=1980 [2022-02-15 02:47:25,542 INFO L933 BasicCegarLoop]: 215 mSDtfsCounter, 879 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 2360 mSolverCounterSat, 66 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 879 SdHoareTripleChecker+Valid, 262 SdHoareTripleChecker+Invalid, 2426 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 66 IncrementalHoareTripleChecker+Valid, 2360 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-02-15 02:47:25,542 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [879 Valid, 262 Invalid, 2426 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [66 Valid, 2360 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-02-15 02:47:25,544 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 638 states. [2022-02-15 02:47:25,578 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 638 to 535. [2022-02-15 02:47:25,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 535 states, 530 states have (on average 1.4320754716981132) internal successors, (759), 530 states have internal predecessors, (759), 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) [2022-02-15 02:47:25,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 535 states to 535 states and 763 transitions. [2022-02-15 02:47:25,580 INFO L78 Accepts]: Start accepts. Automaton has 535 states and 763 transitions. Word has length 80 [2022-02-15 02:47:25,580 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 02:47:25,580 INFO L470 AbstractCegarLoop]: Abstraction has 535 states and 763 transitions. [2022-02-15 02:47:25,580 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 23 states have (on average 3.3043478260869565) internal successors, (76), 22 states have internal predecessors, (76), 2 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) [2022-02-15 02:47:25,581 INFO L276 IsEmpty]: Start isEmpty. Operand 535 states and 763 transitions. [2022-02-15 02:47:25,581 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2022-02-15 02:47:25,582 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 02:47:25,582 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 02:47:25,582 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-02-15 02:47:25,582 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 02:47:25,582 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 02:47:25,582 INFO L85 PathProgramCache]: Analyzing trace with hash -973465767, now seen corresponding path program 1 times [2022-02-15 02:47:25,582 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 02:47:25,582 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1878455181] [2022-02-15 02:47:25,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 02:47:25,653 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 6 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=4, 2=1}, 1={1=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:47:25,654 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-02-15 02:47:25,654 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-15 02:47:25,654 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-02-15 02:47:26,038 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 8 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=6, 2=1}, 1={1=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:47:26,038 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2022-02-15 02:47:26,038 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 02:47:26,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:47:26,080 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 02:47:26,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:47:26,084 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 02:47:26,529 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 02:47:26,529 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1878455181] [2022-02-15 02:47:26,530 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1878455181] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 02:47:26,530 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 02:47:26,530 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2022-02-15 02:47:26,530 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [527334905] [2022-02-15 02:47:26,530 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 02:47:26,530 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-02-15 02:47:26,530 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 02:47:26,531 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-02-15 02:47:26,531 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=96, Invalid=504, Unknown=0, NotChecked=0, Total=600 [2022-02-15 02:47:26,531 INFO L87 Difference]: Start difference. First operand 535 states and 763 transitions. Second operand has 25 states, 24 states have (on average 3.2083333333333335) internal successors, (77), 23 states have internal predecessors, (77), 2 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) [2022-02-15 02:47:27,906 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 02:47:27,906 INFO L93 Difference]: Finished difference Result 948 states and 1316 transitions. [2022-02-15 02:47:27,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2022-02-15 02:47:27,907 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 24 states have (on average 3.2083333333333335) internal successors, (77), 23 states have internal predecessors, (77), 2 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) Word has length 81 [2022-02-15 02:47:27,907 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 02:47:27,909 INFO L225 Difference]: With dead ends: 948 [2022-02-15 02:47:27,909 INFO L226 Difference]: Without dead ends: 633 [2022-02-15 02:47:27,910 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 37 SyntacticMatches, 1 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 592 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=322, Invalid=1840, Unknown=0, NotChecked=0, Total=2162 [2022-02-15 02:47:27,910 INFO L933 BasicCegarLoop]: 215 mSDtfsCounter, 908 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 2668 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 908 SdHoareTripleChecker+Valid, 257 SdHoareTripleChecker+Invalid, 2725 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 2668 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-02-15 02:47:27,911 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [908 Valid, 257 Invalid, 2725 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [57 Valid, 2668 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-02-15 02:47:27,911 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 633 states. [2022-02-15 02:47:27,939 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 633 to 510. [2022-02-15 02:47:27,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 510 states, 505 states have (on average 1.4495049504950495) internal successors, (732), 505 states have internal predecessors, (732), 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) [2022-02-15 02:47:27,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 510 states to 510 states and 736 transitions. [2022-02-15 02:47:27,941 INFO L78 Accepts]: Start accepts. Automaton has 510 states and 736 transitions. Word has length 81 [2022-02-15 02:47:27,941 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 02:47:27,942 INFO L470 AbstractCegarLoop]: Abstraction has 510 states and 736 transitions. [2022-02-15 02:47:27,942 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 24 states have (on average 3.2083333333333335) internal successors, (77), 23 states have internal predecessors, (77), 2 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) [2022-02-15 02:47:27,942 INFO L276 IsEmpty]: Start isEmpty. Operand 510 states and 736 transitions. [2022-02-15 02:47:27,943 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2022-02-15 02:47:27,943 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 02:47:27,943 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 02:47:27,943 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-02-15 02:47:27,943 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 02:47:27,943 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 02:47:27,943 INFO L85 PathProgramCache]: Analyzing trace with hash -31453603, now seen corresponding path program 1 times [2022-02-15 02:47:27,943 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 02:47:27,943 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1191780865] [2022-02-15 02:47:27,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 02:47:28,008 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 6 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=4, 2=1}, 1={1=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:47:28,008 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-02-15 02:47:28,092 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 6 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=4, 2=1}, 1={1=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:47:28,466 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 8 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=6, 2=1}, 1={1=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:47:28,467 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2022-02-15 02:47:28,467 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 02:47:28,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:47:28,520 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 02:47:28,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:47:28,524 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 02:47:28,940 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 02:47:28,940 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1191780865] [2022-02-15 02:47:28,940 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1191780865] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 02:47:28,940 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 02:47:28,940 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2022-02-15 02:47:28,940 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1588625463] [2022-02-15 02:47:28,941 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 02:47:28,941 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-02-15 02:47:28,941 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 02:47:28,941 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-02-15 02:47:28,941 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=505, Unknown=0, NotChecked=0, Total=600 [2022-02-15 02:47:28,941 INFO L87 Difference]: Start difference. First operand 510 states and 736 transitions. Second operand has 25 states, 24 states have (on average 3.2083333333333335) internal successors, (77), 23 states have internal predecessors, (77), 2 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) [2022-02-15 02:47:30,192 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 02:47:30,192 INFO L93 Difference]: Finished difference Result 927 states and 1294 transitions. [2022-02-15 02:47:30,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2022-02-15 02:47:30,193 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 24 states have (on average 3.2083333333333335) internal successors, (77), 23 states have internal predecessors, (77), 2 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) Word has length 81 [2022-02-15 02:47:30,193 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 02:47:30,195 INFO L225 Difference]: With dead ends: 927 [2022-02-15 02:47:30,195 INFO L226 Difference]: Without dead ends: 639 [2022-02-15 02:47:30,196 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 37 SyntacticMatches, 1 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 576 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=319, Invalid=1843, Unknown=0, NotChecked=0, Total=2162 [2022-02-15 02:47:30,197 INFO L933 BasicCegarLoop]: 215 mSDtfsCounter, 924 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 2084 mSolverCounterSat, 63 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 924 SdHoareTripleChecker+Valid, 247 SdHoareTripleChecker+Invalid, 2147 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 63 IncrementalHoareTripleChecker+Valid, 2084 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-02-15 02:47:30,197 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [924 Valid, 247 Invalid, 2147 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [63 Valid, 2084 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-02-15 02:47:30,197 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 639 states. [2022-02-15 02:47:30,230 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 639 to 536. [2022-02-15 02:47:30,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 536 states, 531 states have (on average 1.4293785310734464) internal successors, (759), 531 states have internal predecessors, (759), 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) [2022-02-15 02:47:30,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 536 states to 536 states and 763 transitions. [2022-02-15 02:47:30,232 INFO L78 Accepts]: Start accepts. Automaton has 536 states and 763 transitions. Word has length 81 [2022-02-15 02:47:30,232 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 02:47:30,232 INFO L470 AbstractCegarLoop]: Abstraction has 536 states and 763 transitions. [2022-02-15 02:47:30,232 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 24 states have (on average 3.2083333333333335) internal successors, (77), 23 states have internal predecessors, (77), 2 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) [2022-02-15 02:47:30,232 INFO L276 IsEmpty]: Start isEmpty. Operand 536 states and 763 transitions. [2022-02-15 02:47:30,233 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2022-02-15 02:47:30,233 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 02:47:30,233 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 02:47:30,233 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-02-15 02:47:30,233 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 02:47:30,234 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 02:47:30,234 INFO L85 PathProgramCache]: Analyzing trace with hash -147911492, now seen corresponding path program 1 times [2022-02-15 02:47:30,234 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 02:47:30,234 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [674806395] [2022-02-15 02:47:30,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 02:47:30,371 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 7 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=7}, 1={1=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:47:30,372 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-02-15 02:47:30,445 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 6 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=4, 2=1}, 1={1=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:47:33,385 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 9 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=7, 2=1}, 1={1=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:47:33,385 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2022-02-15 02:47:33,385 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 02:47:33,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:47:33,426 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 02:47:33,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:47:33,429 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 02:47:34,055 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 02:47:34,055 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [674806395] [2022-02-15 02:47:34,055 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [674806395] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 02:47:34,055 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 02:47:34,055 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2022-02-15 02:47:34,055 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1323514766] [2022-02-15 02:47:34,055 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 02:47:34,055 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-02-15 02:47:34,055 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 02:47:34,056 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-02-15 02:47:34,056 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=106, Invalid=494, Unknown=0, NotChecked=0, Total=600 [2022-02-15 02:47:34,056 INFO L87 Difference]: Start difference. First operand 536 states and 763 transitions. Second operand has 25 states, 24 states have (on average 3.2083333333333335) internal successors, (77), 23 states have internal predecessors, (77), 2 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) [2022-02-15 02:47:35,593 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 02:47:35,593 INFO L93 Difference]: Finished difference Result 971 states and 1346 transitions. [2022-02-15 02:47:35,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2022-02-15 02:47:35,594 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 24 states have (on average 3.2083333333333335) internal successors, (77), 23 states have internal predecessors, (77), 2 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) Word has length 81 [2022-02-15 02:47:35,594 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 02:47:35,596 INFO L225 Difference]: With dead ends: 971 [2022-02-15 02:47:35,596 INFO L226 Difference]: Without dead ends: 659 [2022-02-15 02:47:35,597 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 25 SyntacticMatches, 12 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 683 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=352, Invalid=1810, Unknown=0, NotChecked=0, Total=2162 [2022-02-15 02:47:35,597 INFO L933 BasicCegarLoop]: 217 mSDtfsCounter, 801 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 2610 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 801 SdHoareTripleChecker+Valid, 264 SdHoareTripleChecker+Invalid, 2659 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 2610 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-02-15 02:47:35,597 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [801 Valid, 264 Invalid, 2659 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 2610 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-02-15 02:47:35,598 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 659 states. [2022-02-15 02:47:35,632 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 659 to 536. [2022-02-15 02:47:35,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 536 states, 531 states have (on average 1.4293785310734464) internal successors, (759), 531 states have internal predecessors, (759), 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) [2022-02-15 02:47:35,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 536 states to 536 states and 763 transitions. [2022-02-15 02:47:35,634 INFO L78 Accepts]: Start accepts. Automaton has 536 states and 763 transitions. Word has length 81 [2022-02-15 02:47:35,634 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 02:47:35,634 INFO L470 AbstractCegarLoop]: Abstraction has 536 states and 763 transitions. [2022-02-15 02:47:35,635 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 24 states have (on average 3.2083333333333335) internal successors, (77), 23 states have internal predecessors, (77), 2 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) [2022-02-15 02:47:35,635 INFO L276 IsEmpty]: Start isEmpty. Operand 536 states and 763 transitions. [2022-02-15 02:47:35,636 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2022-02-15 02:47:35,636 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 02:47:35,636 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 02:47:35,636 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-02-15 02:47:35,636 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 02:47:35,636 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 02:47:35,636 INFO L85 PathProgramCache]: Analyzing trace with hash -1476204141, now seen corresponding path program 1 times [2022-02-15 02:47:35,636 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 02:47:35,637 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1605433382] [2022-02-15 02:47:35,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 02:47:35,700 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 6 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=4, 2=1}, 1={1=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:47:35,700 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-02-15 02:47:35,701 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-15 02:47:35,701 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-02-15 02:47:36,087 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 8 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=6, 2=1}, 1={1=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:47:36,087 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2022-02-15 02:47:36,087 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 02:47:36,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:47:36,137 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 02:47:36,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:47:36,141 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 02:47:36,600 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 02:47:36,600 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1605433382] [2022-02-15 02:47:36,600 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1605433382] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 02:47:36,600 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 02:47:36,601 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2022-02-15 02:47:36,601 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [326876988] [2022-02-15 02:47:36,601 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 02:47:36,601 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-02-15 02:47:36,601 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 02:47:36,601 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-02-15 02:47:36,601 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=549, Unknown=0, NotChecked=0, Total=650 [2022-02-15 02:47:36,602 INFO L87 Difference]: Start difference. First operand 536 states and 763 transitions. Second operand has 26 states, 25 states have (on average 3.12) internal successors, (78), 24 states have internal predecessors, (78), 2 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) [2022-02-15 02:47:37,881 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 02:47:37,881 INFO L93 Difference]: Finished difference Result 950 states and 1316 transitions. [2022-02-15 02:47:37,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-02-15 02:47:37,882 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 25 states have (on average 3.12) internal successors, (78), 24 states have internal predecessors, (78), 2 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) Word has length 82 [2022-02-15 02:47:37,882 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 02:47:37,884 INFO L225 Difference]: With dead ends: 950 [2022-02-15 02:47:37,884 INFO L226 Difference]: Without dead ends: 629 [2022-02-15 02:47:37,885 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 37 SyntacticMatches, 1 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 644 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=339, Invalid=2013, Unknown=0, NotChecked=0, Total=2352 [2022-02-15 02:47:37,885 INFO L933 BasicCegarLoop]: 214 mSDtfsCounter, 839 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 2174 mSolverCounterSat, 58 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 839 SdHoareTripleChecker+Valid, 251 SdHoareTripleChecker+Invalid, 2232 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 58 IncrementalHoareTripleChecker+Valid, 2174 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-02-15 02:47:37,886 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [839 Valid, 251 Invalid, 2232 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [58 Valid, 2174 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-02-15 02:47:37,886 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 629 states. [2022-02-15 02:47:37,921 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 629 to 529. [2022-02-15 02:47:37,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 529 states, 524 states have (on average 1.433206106870229) internal successors, (751), 524 states have internal predecessors, (751), 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) [2022-02-15 02:47:37,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 529 states to 529 states and 755 transitions. [2022-02-15 02:47:37,923 INFO L78 Accepts]: Start accepts. Automaton has 529 states and 755 transitions. Word has length 82 [2022-02-15 02:47:37,924 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 02:47:37,924 INFO L470 AbstractCegarLoop]: Abstraction has 529 states and 755 transitions. [2022-02-15 02:47:37,924 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 25 states have (on average 3.12) internal successors, (78), 24 states have internal predecessors, (78), 2 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) [2022-02-15 02:47:37,924 INFO L276 IsEmpty]: Start isEmpty. Operand 529 states and 755 transitions. [2022-02-15 02:47:37,925 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2022-02-15 02:47:37,925 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 02:47:37,925 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 02:47:37,925 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-02-15 02:47:37,925 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 02:47:37,926 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 02:47:37,926 INFO L85 PathProgramCache]: Analyzing trace with hash -2027975498, now seen corresponding path program 1 times [2022-02-15 02:47:37,926 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 02:47:37,926 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1881276665] [2022-02-15 02:47:37,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 02:47:38,008 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 6 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=4, 2=1}, 1={1=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:47:38,008 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-02-15 02:47:38,086 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 6 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=4, 2=1}, 1={1=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:47:38,501 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 8 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=6, 2=1}, 1={1=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:47:38,501 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2022-02-15 02:47:38,501 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 02:47:38,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:47:38,548 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 02:47:38,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:47:38,551 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 02:47:39,000 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 02:47:39,000 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1881276665] [2022-02-15 02:47:39,000 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1881276665] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 02:47:39,001 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 02:47:39,001 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2022-02-15 02:47:39,001 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [918110494] [2022-02-15 02:47:39,001 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 02:47:39,001 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-02-15 02:47:39,001 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 02:47:39,001 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-02-15 02:47:39,002 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=500, Unknown=0, NotChecked=0, Total=600 [2022-02-15 02:47:39,002 INFO L87 Difference]: Start difference. First operand 529 states and 755 transitions. Second operand has 25 states, 24 states have (on average 3.3333333333333335) internal successors, (80), 23 states have internal predecessors, (80), 2 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) [2022-02-15 02:47:40,749 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 02:47:40,749 INFO L93 Difference]: Finished difference Result 961 states and 1327 transitions. [2022-02-15 02:47:40,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2022-02-15 02:47:40,750 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 24 states have (on average 3.3333333333333335) internal successors, (80), 23 states have internal predecessors, (80), 2 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) Word has length 84 [2022-02-15 02:47:40,750 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 02:47:40,751 INFO L225 Difference]: With dead ends: 961 [2022-02-15 02:47:40,751 INFO L226 Difference]: Without dead ends: 648 [2022-02-15 02:47:40,752 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 40 SyntacticMatches, 1 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 540 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=334, Invalid=1828, Unknown=0, NotChecked=0, Total=2162 [2022-02-15 02:47:40,753 INFO L933 BasicCegarLoop]: 216 mSDtfsCounter, 761 mSDsluCounter, 72 mSDsCounter, 0 mSdLazyCounter, 3494 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 761 SdHoareTripleChecker+Valid, 288 SdHoareTripleChecker+Invalid, 3537 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 3494 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-02-15 02:47:40,753 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [761 Valid, 288 Invalid, 3537 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 3494 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-02-15 02:47:40,754 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 648 states. [2022-02-15 02:47:40,789 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 648 to 529. [2022-02-15 02:47:40,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 529 states, 524 states have (on average 1.433206106870229) internal successors, (751), 524 states have internal predecessors, (751), 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) [2022-02-15 02:47:40,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 529 states to 529 states and 755 transitions. [2022-02-15 02:47:40,791 INFO L78 Accepts]: Start accepts. Automaton has 529 states and 755 transitions. Word has length 84 [2022-02-15 02:47:40,791 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 02:47:40,792 INFO L470 AbstractCegarLoop]: Abstraction has 529 states and 755 transitions. [2022-02-15 02:47:40,792 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 24 states have (on average 3.3333333333333335) internal successors, (80), 23 states have internal predecessors, (80), 2 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) [2022-02-15 02:47:40,792 INFO L276 IsEmpty]: Start isEmpty. Operand 529 states and 755 transitions. [2022-02-15 02:47:40,793 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2022-02-15 02:47:40,793 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 02:47:40,793 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 02:47:40,793 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-02-15 02:47:40,793 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 02:47:40,793 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 02:47:40,793 INFO L85 PathProgramCache]: Analyzing trace with hash -930293458, now seen corresponding path program 1 times [2022-02-15 02:47:40,793 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 02:47:40,793 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1773353159] [2022-02-15 02:47:40,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 02:47:40,921 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 7 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=5, 2=1}, 1={1=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:47:40,921 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-02-15 02:47:40,922 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-15 02:47:40,922 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-02-15 02:47:41,004 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 6 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=4, 2=1}, 1={1=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:47:41,004 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2022-02-15 02:47:41,004 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 02:47:41,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:47:41,079 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 02:47:41,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:47:41,082 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 02:47:42,045 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 02:47:42,046 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1773353159] [2022-02-15 02:47:42,046 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1773353159] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 02:47:42,046 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 02:47:42,046 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [33] imperfect sequences [] total 33 [2022-02-15 02:47:42,046 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [747883553] [2022-02-15 02:47:42,046 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 02:47:42,046 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-02-15 02:47:42,046 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 02:47:42,047 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-02-15 02:47:42,047 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=252, Invalid=804, Unknown=0, NotChecked=0, Total=1056 [2022-02-15 02:47:42,047 INFO L87 Difference]: Start difference. First operand 529 states and 755 transitions. Second operand has 33 states, 32 states have (on average 2.53125) internal successors, (81), 31 states have internal predecessors, (81), 2 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) [2022-02-15 02:47:45,230 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 02:47:45,231 INFO L93 Difference]: Finished difference Result 1889 states and 2719 transitions. [2022-02-15 02:47:45,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2022-02-15 02:47:45,232 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 32 states have (on average 2.53125) internal successors, (81), 31 states have internal predecessors, (81), 2 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) Word has length 85 [2022-02-15 02:47:45,232 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 02:47:45,235 INFO L225 Difference]: With dead ends: 1889 [2022-02-15 02:47:45,235 INFO L226 Difference]: Without dead ends: 1374 [2022-02-15 02:47:45,237 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 15 SyntacticMatches, 13 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1546 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=1152, Invalid=4250, Unknown=0, NotChecked=0, Total=5402 [2022-02-15 02:47:45,237 INFO L933 BasicCegarLoop]: 299 mSDtfsCounter, 1953 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 5377 mSolverCounterSat, 142 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1953 SdHoareTripleChecker+Valid, 346 SdHoareTripleChecker+Invalid, 5519 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 142 IncrementalHoareTripleChecker+Valid, 5377 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-02-15 02:47:45,238 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1953 Valid, 346 Invalid, 5519 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [142 Valid, 5377 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2022-02-15 02:47:45,238 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1374 states. [2022-02-15 02:47:45,313 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1374 to 862. [2022-02-15 02:47:45,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 862 states, 857 states have (on average 1.4772462077012836) internal successors, (1266), 857 states have internal predecessors, (1266), 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) [2022-02-15 02:47:45,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 862 states to 862 states and 1270 transitions. [2022-02-15 02:47:45,316 INFO L78 Accepts]: Start accepts. Automaton has 862 states and 1270 transitions. Word has length 85 [2022-02-15 02:47:45,316 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 02:47:45,316 INFO L470 AbstractCegarLoop]: Abstraction has 862 states and 1270 transitions. [2022-02-15 02:47:45,316 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 32 states have (on average 2.53125) internal successors, (81), 31 states have internal predecessors, (81), 2 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) [2022-02-15 02:47:45,316 INFO L276 IsEmpty]: Start isEmpty. Operand 862 states and 1270 transitions. [2022-02-15 02:47:45,318 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2022-02-15 02:47:45,318 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 02:47:45,318 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 02:47:45,318 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-02-15 02:47:45,318 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 02:47:45,318 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 02:47:45,318 INFO L85 PathProgramCache]: Analyzing trace with hash 887623366, now seen corresponding path program 1 times [2022-02-15 02:47:45,318 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 02:47:45,318 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2103518086] [2022-02-15 02:47:45,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 02:47:45,788 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 7 AssignedVariables, 1 ReadonlyVariables, Eigenvalues: {0={1=5, 2=1}, 1={1=2}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:47:45,843 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 6 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=4, 2=1}, 1={1=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:47:45,843 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2022-02-15 02:47:46,236 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 8 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=6, 2=1}, 1={1=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:47:46,619 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 7 AssignedVariables, 1 ReadonlyVariables, Eigenvalues: {0={1=5, 2=1}, 1={1=2}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:47:46,675 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 6 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=4, 2=1}, 1={1=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:47:46,675 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2022-02-15 02:47:46,675 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 02:47:46,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:47:46,741 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 02:47:46,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:47:46,745 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 02:47:47,638 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 02:47:47,638 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2103518086] [2022-02-15 02:47:47,639 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [2103518086] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 02:47:47,639 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 02:47:47,639 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [28] imperfect sequences [] total 28 [2022-02-15 02:47:47,639 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [410696915] [2022-02-15 02:47:47,639 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 02:47:47,639 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-02-15 02:47:47,639 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 02:47:47,639 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-02-15 02:47:47,640 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=125, Invalid=687, Unknown=0, NotChecked=0, Total=812 [2022-02-15 02:47:47,640 INFO L87 Difference]: Start difference. First operand 862 states and 1270 transitions. Second operand has 28 states, 27 states have (on average 3.5555555555555554) internal successors, (96), 26 states have internal predecessors, (96), 2 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) [2022-02-15 02:47:49,191 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 02:47:49,191 INFO L93 Difference]: Finished difference Result 1968 states and 2938 transitions. [2022-02-15 02:47:49,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-02-15 02:47:49,191 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 27 states have (on average 3.5555555555555554) internal successors, (96), 26 states have internal predecessors, (96), 2 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) Word has length 100 [2022-02-15 02:47:49,192 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 02:47:49,194 INFO L225 Difference]: With dead ends: 1968 [2022-02-15 02:47:49,194 INFO L226 Difference]: Without dead ends: 1084 [2022-02-15 02:47:49,196 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 49 SyntacticMatches, 6 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 758 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=299, Invalid=2251, Unknown=0, NotChecked=0, Total=2550 [2022-02-15 02:47:49,197 INFO L933 BasicCegarLoop]: 197 mSDtfsCounter, 372 mSDsluCounter, 92 mSDsCounter, 0 mSdLazyCounter, 2592 mSolverCounterSat, 72 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 372 SdHoareTripleChecker+Valid, 289 SdHoareTripleChecker+Invalid, 3019 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 72 IncrementalHoareTripleChecker+Valid, 2592 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 355 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-02-15 02:47:49,197 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [372 Valid, 289 Invalid, 3019 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [72 Valid, 2592 Invalid, 0 Unknown, 355 Unchecked, 1.0s Time] [2022-02-15 02:47:49,198 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1084 states. [2022-02-15 02:47:49,300 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1084 to 999. [2022-02-15 02:47:49,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 999 states, 994 states have (on average 1.4748490945674044) internal successors, (1466), 994 states have internal predecessors, (1466), 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) [2022-02-15 02:47:49,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 999 states to 999 states and 1470 transitions. [2022-02-15 02:47:49,303 INFO L78 Accepts]: Start accepts. Automaton has 999 states and 1470 transitions. Word has length 100 [2022-02-15 02:47:49,303 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 02:47:49,303 INFO L470 AbstractCegarLoop]: Abstraction has 999 states and 1470 transitions. [2022-02-15 02:47:49,303 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 27 states have (on average 3.5555555555555554) internal successors, (96), 26 states have internal predecessors, (96), 2 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) [2022-02-15 02:47:49,303 INFO L276 IsEmpty]: Start isEmpty. Operand 999 states and 1470 transitions. [2022-02-15 02:47:49,305 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2022-02-15 02:47:49,305 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 02:47:49,305 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 02:47:49,305 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-02-15 02:47:49,305 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 02:47:49,306 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 02:47:49,306 INFO L85 PathProgramCache]: Analyzing trace with hash -1673850964, now seen corresponding path program 1 times [2022-02-15 02:47:49,306 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 02:47:49,306 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1457803395] [2022-02-15 02:47:49,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 02:47:49,833 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-15 02:47:49,834 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-02-15 02:47:49,834 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 02:47:49,834 INFO L274 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-15 02:47:49,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:47:49,856 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 02:47:49,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:47:49,859 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 02:47:49,859 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 02:47:49,860 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1457803395] [2022-02-15 02:47:49,860 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1457803395] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 02:47:49,860 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 02:47:49,860 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-02-15 02:47:49,860 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2013181792] [2022-02-15 02:47:49,860 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 02:47:49,860 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-02-15 02:47:49,860 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 02:47:49,860 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-02-15 02:47:49,860 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-02-15 02:47:49,861 INFO L87 Difference]: Start difference. First operand 999 states and 1470 transitions. Second operand has 4 states, 4 states have (on average 23.0) internal successors, (92), 3 states have internal predecessors, (92), 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) [2022-02-15 02:47:50,129 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 02:47:50,129 INFO L93 Difference]: Finished difference Result 2099 states and 3148 transitions. [2022-02-15 02:47:50,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-02-15 02:47:50,130 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 23.0) internal successors, (92), 3 states have internal predecessors, (92), 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 121 [2022-02-15 02:47:50,130 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 02:47:50,133 INFO L225 Difference]: With dead ends: 2099 [2022-02-15 02:47:50,133 INFO L226 Difference]: Without dead ends: 1158 [2022-02-15 02:47:50,135 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-02-15 02:47:50,135 INFO L933 BasicCegarLoop]: 235 mSDtfsCounter, 306 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 179 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 306 SdHoareTripleChecker+Valid, 242 SdHoareTripleChecker+Invalid, 226 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 179 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-15 02:47:50,135 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [306 Valid, 242 Invalid, 226 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 179 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-15 02:47:50,136 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1158 states. [2022-02-15 02:47:50,241 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1158 to 1092. [2022-02-15 02:47:50,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1092 states, 1087 states have (on average 1.4038638454461823) internal successors, (1526), 1087 states have internal predecessors, (1526), 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) [2022-02-15 02:47:50,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1092 states to 1092 states and 1530 transitions. [2022-02-15 02:47:50,244 INFO L78 Accepts]: Start accepts. Automaton has 1092 states and 1530 transitions. Word has length 121 [2022-02-15 02:47:50,244 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 02:47:50,245 INFO L470 AbstractCegarLoop]: Abstraction has 1092 states and 1530 transitions. [2022-02-15 02:47:50,245 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.0) internal successors, (92), 3 states have internal predecessors, (92), 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) [2022-02-15 02:47:50,245 INFO L276 IsEmpty]: Start isEmpty. Operand 1092 states and 1530 transitions. [2022-02-15 02:47:50,246 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2022-02-15 02:47:50,247 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 02:47:50,247 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 02:47:50,247 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-02-15 02:47:50,247 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 02:47:50,247 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 02:47:50,247 INFO L85 PathProgramCache]: Analyzing trace with hash -1812414350, now seen corresponding path program 1 times [2022-02-15 02:47:50,247 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 02:47:50,247 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [901834053] [2022-02-15 02:47:50,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 02:47:53,319 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 7 AssignedVariables, 2 ReadonlyVariables, Eigenvalues: {0={1=5, 2=1}, 1={1=3}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:47:53,705 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 7 AssignedVariables, 1 ReadonlyVariables, Eigenvalues: {0={1=5, 2=1}, 1={1=2}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:47:53,769 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 6 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=4, 2=1}, 1={1=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:47:53,770 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2022-02-15 02:47:54,150 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 8 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=6, 2=1}, 1={1=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:47:54,532 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 7 AssignedVariables, 1 ReadonlyVariables, Eigenvalues: {0={1=5, 2=1}, 1={1=2}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:47:54,598 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 6 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=4, 2=1}, 1={1=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:47:57,768 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 7 AssignedVariables, 2 ReadonlyVariables, Eigenvalues: {0={1=5, 2=1}, 1={1=3}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:47:57,768 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2022-02-15 02:47:57,768 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 02:47:57,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:47:57,861 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 02:47:57,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:47:57,865 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 02:47:59,035 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 02:47:59,036 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [901834053] [2022-02-15 02:47:59,036 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [901834053] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 02:47:59,036 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 02:47:59,036 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [32] imperfect sequences [] total 32 [2022-02-15 02:47:59,036 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [395452807] [2022-02-15 02:47:59,036 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 02:47:59,036 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-02-15 02:47:59,036 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 02:47:59,037 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-02-15 02:47:59,037 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=174, Invalid=948, Unknown=0, NotChecked=0, Total=1122 [2022-02-15 02:47:59,037 INFO L87 Difference]: Start difference. First operand 1092 states and 1530 transitions. Second operand has 32 states, 31 states have (on average 3.903225806451613) internal successors, (121), 30 states have internal predecessors, (121), 2 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) [2022-02-15 02:48:01,659 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 02:48:01,660 INFO L93 Difference]: Finished difference Result 2077 states and 2910 transitions. [2022-02-15 02:48:01,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2022-02-15 02:48:01,660 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 31 states have (on average 3.903225806451613) internal successors, (121), 30 states have internal predecessors, (121), 2 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) Word has length 125 [2022-02-15 02:48:01,660 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 02:48:01,664 INFO L225 Difference]: With dead ends: 2077 [2022-02-15 02:48:01,664 INFO L226 Difference]: Without dead ends: 1356 [2022-02-15 02:48:01,665 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 127 GetRequests, 62 SyntacticMatches, 7 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1116 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=416, Invalid=3124, Unknown=0, NotChecked=0, Total=3540 [2022-02-15 02:48:01,666 INFO L933 BasicCegarLoop]: 266 mSDtfsCounter, 554 mSDsluCounter, 106 mSDsCounter, 0 mSdLazyCounter, 5468 mSolverCounterSat, 84 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 554 SdHoareTripleChecker+Valid, 372 SdHoareTripleChecker+Invalid, 6550 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 84 IncrementalHoareTripleChecker+Valid, 5468 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 998 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2022-02-15 02:48:01,666 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [554 Valid, 372 Invalid, 6550 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [84 Valid, 5468 Invalid, 0 Unknown, 998 Unchecked, 2.0s Time] [2022-02-15 02:48:01,667 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1356 states. [2022-02-15 02:48:01,781 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1356 to 1257. [2022-02-15 02:48:01,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1257 states, 1252 states have (on average 1.3969648562300319) internal successors, (1749), 1252 states have internal predecessors, (1749), 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) [2022-02-15 02:48:01,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1257 states to 1257 states and 1753 transitions. [2022-02-15 02:48:01,785 INFO L78 Accepts]: Start accepts. Automaton has 1257 states and 1753 transitions. Word has length 125 [2022-02-15 02:48:01,786 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 02:48:01,786 INFO L470 AbstractCegarLoop]: Abstraction has 1257 states and 1753 transitions. [2022-02-15 02:48:01,786 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 31 states have (on average 3.903225806451613) internal successors, (121), 30 states have internal predecessors, (121), 2 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) [2022-02-15 02:48:01,786 INFO L276 IsEmpty]: Start isEmpty. Operand 1257 states and 1753 transitions. [2022-02-15 02:48:01,788 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2022-02-15 02:48:01,788 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 02:48:01,789 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 02:48:01,789 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-02-15 02:48:01,789 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 02:48:01,789 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 02:48:01,789 INFO L85 PathProgramCache]: Analyzing trace with hash -1235645381, now seen corresponding path program 1 times [2022-02-15 02:48:01,789 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 02:48:01,789 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [786975248] [2022-02-15 02:48:01,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 02:48:02,188 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 7 AssignedVariables, 1 ReadonlyVariables, Eigenvalues: {0={1=5, 2=1}, 1={1=2}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:54:22,634 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 9 AssignedVariables, 2 ReadonlyVariables, Eigenvalues: {0={1=7, 2=1}, 1={1=3}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:54:22,689 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 6 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=4, 2=1}, 1={1=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:54:22,689 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2022-02-15 02:54:23,068 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 8 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=6, 2=1}, 1={1=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:54:23,446 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 7 AssignedVariables, 1 ReadonlyVariables, Eigenvalues: {0={1=5, 2=1}, 1={1=2}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 03:00:43,835 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 9 AssignedVariables, 2 ReadonlyVariables, Eigenvalues: {0={1=7, 2=1}, 1={1=3}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 03:00:43,902 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 6 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=4, 2=1}, 1={1=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 03:00:43,902 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2022-02-15 03:00:43,902 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 03:00:43,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:00:43,964 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 03:00:43,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:00:43,967 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 03:00:45,314 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 03:00:45,314 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [786975248] [2022-02-15 03:00:45,314 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [786975248] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 03:00:45,314 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 03:00:45,314 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [36] imperfect sequences [] total 36 [2022-02-15 03:00:45,314 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1768468591] [2022-02-15 03:00:45,314 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 03:00:45,315 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2022-02-15 03:00:45,315 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 03:00:45,315 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2022-02-15 03:00:45,315 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=208, Invalid=1198, Unknown=0, NotChecked=0, Total=1406 [2022-02-15 03:00:45,316 INFO L87 Difference]: Start difference. First operand 1257 states and 1753 transitions. Second operand has 36 states, 35 states have (on average 3.4857142857142858) internal successors, (122), 34 states have internal predecessors, (122), 2 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) [2022-02-15 03:00:48,731 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 03:00:48,731 INFO L93 Difference]: Finished difference Result 2658 states and 3704 transitions. [2022-02-15 03:00:48,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2022-02-15 03:00:48,732 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 35 states have (on average 3.4857142857142858) internal successors, (122), 34 states have internal predecessors, (122), 2 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) Word has length 126 [2022-02-15 03:00:48,732 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 03:00:48,737 INFO L225 Difference]: With dead ends: 2658 [2022-02-15 03:00:48,737 INFO L226 Difference]: Without dead ends: 1795 [2022-02-15 03:00:48,739 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 61 SyntacticMatches, 6 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1833 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=747, Invalid=4953, Unknown=0, NotChecked=0, Total=5700 [2022-02-15 03:00:48,739 INFO L933 BasicCegarLoop]: 181 mSDtfsCounter, 1671 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 5640 mSolverCounterSat, 150 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1671 SdHoareTripleChecker+Valid, 238 SdHoareTripleChecker+Invalid, 6878 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 150 IncrementalHoareTripleChecker+Valid, 5640 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1088 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2022-02-15 03:00:48,740 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1671 Valid, 238 Invalid, 6878 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [150 Valid, 5640 Invalid, 0 Unknown, 1088 Unchecked, 2.3s Time] [2022-02-15 03:00:48,741 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1795 states. [2022-02-15 03:00:48,906 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1795 to 1620. [2022-02-15 03:00:48,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1620 states, 1615 states have (on average 1.3981424148606811) internal successors, (2258), 1615 states have internal predecessors, (2258), 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) [2022-02-15 03:00:48,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1620 states to 1620 states and 2262 transitions. [2022-02-15 03:00:48,909 INFO L78 Accepts]: Start accepts. Automaton has 1620 states and 2262 transitions. Word has length 126 [2022-02-15 03:00:48,909 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 03:00:48,910 INFO L470 AbstractCegarLoop]: Abstraction has 1620 states and 2262 transitions. [2022-02-15 03:00:48,910 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 35 states have (on average 3.4857142857142858) internal successors, (122), 34 states have internal predecessors, (122), 2 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) [2022-02-15 03:00:48,910 INFO L276 IsEmpty]: Start isEmpty. Operand 1620 states and 2262 transitions. [2022-02-15 03:00:48,912 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2022-02-15 03:00:48,912 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 03:00:48,912 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 03:00:48,912 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-02-15 03:00:48,912 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 03:00:48,912 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 03:00:48,912 INFO L85 PathProgramCache]: Analyzing trace with hash -2043075857, now seen corresponding path program 1 times [2022-02-15 03:00:48,913 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 03:00:48,913 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1071726594] [2022-02-15 03:00:48,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 03:00:49,319 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 7 AssignedVariables, 1 ReadonlyVariables, Eigenvalues: {0={1=5, 2=1}, 1={1=2}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult