/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_4.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-6c470ae [2022-02-15 02:46:35,430 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-02-15 02:46:35,432 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-02-15 02:46:35,483 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-02-15 02:46:35,516 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-02-15 02:46:35,516 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-02-15 02:46:35,517 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-02-15 02:46:35,520 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 02:46:35,529 INFO L113 SettingsManager]: Loading preferences was successful [2022-02-15 02:46:35,530 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-02-15 02:46:35,531 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-02-15 02:46:35,531 INFO L138 SettingsManager]: * sizeof long=4 [2022-02-15 02:46:35,531 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-02-15 02:46:35,531 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-02-15 02:46:35,531 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-02-15 02:46:35,531 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-02-15 02:46:35,531 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-02-15 02:46:35,531 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-02-15 02:46:35,532 INFO L138 SettingsManager]: * sizeof long double=12 [2022-02-15 02:46:35,532 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-02-15 02:46:35,532 INFO L138 SettingsManager]: * Use constant arrays=true [2022-02-15 02:46:35,532 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-02-15 02:46:35,532 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-02-15 02:46:35,532 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-02-15 02:46:35,532 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-02-15 02:46:35,533 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-02-15 02:46:35,533 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-02-15 02:46:35,533 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-02-15 02:46:35,533 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2022-02-15 02:46:35,533 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-02-15 02:46:35,533 INFO L138 SettingsManager]: * Loop acceleration method that is used by accelerated interpolation=JORDAN [2022-02-15 02:46:35,533 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-02-15 02:46:35,721 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-02-15 02:46:35,734 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-02-15 02:46:35,736 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-02-15 02:46:35,737 INFO L271 PluginConnector]: Initializing CDTParser... [2022-02-15 02:46:35,737 INFO L275 PluginConnector]: CDTParser initialized [2022-02-15 02:46:35,738 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/openssl-simplified/s3_srvr_4.cil.c [2022-02-15 02:46:35,799 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/349ebe0f3/8504484015f949ed940d14444a89d1cf/FLAGfc28ba2eb [2022-02-15 02:46:36,142 INFO L306 CDTParser]: Found 1 translation units. [2022-02-15 02:46:36,143 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/openssl-simplified/s3_srvr_4.cil.c [2022-02-15 02:46:36,162 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/349ebe0f3/8504484015f949ed940d14444a89d1cf/FLAGfc28ba2eb [2022-02-15 02:46:36,538 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/349ebe0f3/8504484015f949ed940d14444a89d1cf [2022-02-15 02:46:36,540 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-02-15 02:46:36,541 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2022-02-15 02:46:36,542 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-02-15 02:46:36,542 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-02-15 02:46:36,544 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-02-15 02:46:36,544 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.02 02:46:36" (1/1) ... [2022-02-15 02:46:36,545 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7ff0b87c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 02:46:36, skipping insertion in model container [2022-02-15 02:46:36,545 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.02 02:46:36" (1/1) ... [2022-02-15 02:46:36,549 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-02-15 02:46:36,578 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-02-15 02:46:36,779 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/openssl-simplified/s3_srvr_4.cil.c[42875,42888] [2022-02-15 02:46:36,792 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-02-15 02:46:36,797 INFO L203 MainTranslator]: Completed pre-run [2022-02-15 02:46:36,849 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/openssl-simplified/s3_srvr_4.cil.c[42875,42888] [2022-02-15 02:46:36,851 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-02-15 02:46:36,863 INFO L208 MainTranslator]: Completed translation [2022-02-15 02:46:36,863 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 02:46:36 WrapperNode [2022-02-15 02:46:36,863 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-02-15 02:46:36,864 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-02-15 02:46:36,864 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-02-15 02:46:36,865 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-02-15 02:46:36,872 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 02:46:36" (1/1) ... [2022-02-15 02:46:36,872 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 02:46:36" (1/1) ... [2022-02-15 02:46:36,892 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 02:46:36" (1/1) ... [2022-02-15 02:46:36,892 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 02:46:36" (1/1) ... [2022-02-15 02:46:36,900 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 02:46:36" (1/1) ... [2022-02-15 02:46:36,905 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 02:46:36" (1/1) ... [2022-02-15 02:46:36,917 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 02:46:36" (1/1) ... [2022-02-15 02:46:36,920 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-02-15 02:46:36,921 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-02-15 02:46:36,921 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-02-15 02:46:36,921 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-02-15 02:46:36,926 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 02:46:36" (1/1) ... [2022-02-15 02:46:36,936 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-02-15 02:46:36,943 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-15 02:46:36,966 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 02:46:36,995 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 02:46:37,008 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2022-02-15 02:46:37,009 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-02-15 02:46:37,009 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2022-02-15 02:46:37,009 INFO L138 BoogieDeclarations]: Found implementation of procedure ssl3_accept [2022-02-15 02:46:37,009 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2022-02-15 02:46:37,009 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2022-02-15 02:46:37,010 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2022-02-15 02:46:37,010 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2022-02-15 02:46:37,010 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-02-15 02:46:37,010 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2022-02-15 02:46:37,010 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2022-02-15 02:46:37,010 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_long [2022-02-15 02:46:37,011 INFO L130 BoogieDeclarations]: Found specification of procedure ssl3_accept [2022-02-15 02:46:37,011 INFO L130 BoogieDeclarations]: Found specification of procedure main [2022-02-15 02:46:37,011 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2022-02-15 02:46:37,012 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-02-15 02:46:37,013 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-02-15 02:46:37,013 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-02-15 02:46:37,013 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-02-15 02:46:37,013 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-02-15 02:46:37,116 INFO L234 CfgBuilder]: Building ICFG [2022-02-15 02:46:37,117 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-02-15 02:46:37,204 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-02-15 02:46:37,471 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##90: assume false; [2022-02-15 02:46:37,472 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##91: assume !false; [2022-02-15 02:46:37,477 INFO L275 CfgBuilder]: Performing block encoding [2022-02-15 02:46:37,482 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-02-15 02:46:37,483 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-02-15 02:46:37,484 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.02 02:46:37 BoogieIcfgContainer [2022-02-15 02:46:37,484 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-02-15 02:46:37,485 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-02-15 02:46:37,485 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-02-15 02:46:37,487 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-02-15 02:46:37,488 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.02 02:46:36" (1/3) ... [2022-02-15 02:46:37,488 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@51acf10f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.02 02:46:37, skipping insertion in model container [2022-02-15 02:46:37,488 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 02:46:36" (2/3) ... [2022-02-15 02:46:37,488 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@51acf10f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.02 02:46:37, skipping insertion in model container [2022-02-15 02:46:37,488 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.02 02:46:37" (3/3) ... [2022-02-15 02:46:37,489 INFO L111 eAbstractionObserver]: Analyzing ICFG s3_srvr_4.cil.c [2022-02-15 02:46:37,493 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2022-02-15 02:46:37,493 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-02-15 02:46:37,521 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-02-15 02:46:37,525 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 02:46:37,525 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-02-15 02:46:37,542 INFO L276 IsEmpty]: Start isEmpty. Operand has 150 states, 142 states have (on average 1.7112676056338028) internal successors, (243), 143 states have internal predecessors, (243), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-02-15 02:46:37,550 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2022-02-15 02:46:37,551 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 02:46:37,551 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 02:46:37,552 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 02:46:37,555 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 02:46:37,556 INFO L85 PathProgramCache]: Analyzing trace with hash 1867927467, now seen corresponding path program 1 times [2022-02-15 02:46:37,561 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 02:46:37,562 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1853764657] [2022-02-15 02:46:37,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 02:46:37,571 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 02:46:37,608 INFO L274 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-15 02:46:37,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:46:37,827 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 02:46:37,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:46:37,839 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 02:46:37,840 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 02:46:37,840 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1853764657] [2022-02-15 02:46:37,841 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1853764657] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 02:46:37,841 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 02:46:37,842 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-02-15 02:46:37,842 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1488001996] [2022-02-15 02:46:37,843 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 02:46:37,846 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-02-15 02:46:37,846 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 02:46:37,865 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-02-15 02:46:37,866 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-02-15 02:46:37,869 INFO L87 Difference]: Start difference. First operand has 150 states, 142 states have (on average 1.7112676056338028) internal successors, (243), 143 states have internal predecessors, (243), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 4 states, 4 states have (on average 11.5) internal successors, (46), 3 states have internal predecessors, (46), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 02:46:38,221 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 02:46:38,222 INFO L93 Difference]: Finished difference Result 414 states and 701 transitions. [2022-02-15 02:46:38,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-02-15 02:46:38,224 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.5) internal successors, (46), 3 states have internal predecessors, (46), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 50 [2022-02-15 02:46:38,224 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 02:46:38,242 INFO L225 Difference]: With dead ends: 414 [2022-02-15 02:46:38,242 INFO L226 Difference]: Without dead ends: 251 [2022-02-15 02:46:38,245 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 02:46:38,247 INFO L933 BasicCegarLoop]: 240 mSDtfsCounter, 634 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 236 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 636 SdHoareTripleChecker+Valid, 249 SdHoareTripleChecker+Invalid, 243 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 236 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-02-15 02:46:38,247 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [636 Valid, 249 Invalid, 243 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 236 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-02-15 02:46:38,275 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 251 states. [2022-02-15 02:46:38,316 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 251 to 251. [2022-02-15 02:46:38,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 251 states, 246 states have (on average 1.524390243902439) internal successors, (375), 246 states have internal predecessors, (375), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 02:46:38,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 251 states to 251 states and 379 transitions. [2022-02-15 02:46:38,320 INFO L78 Accepts]: Start accepts. Automaton has 251 states and 379 transitions. Word has length 50 [2022-02-15 02:46:38,320 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 02:46:38,321 INFO L470 AbstractCegarLoop]: Abstraction has 251 states and 379 transitions. [2022-02-15 02:46:38,321 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.5) internal successors, (46), 3 states have internal predecessors, (46), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 02:46:38,321 INFO L276 IsEmpty]: Start isEmpty. Operand 251 states and 379 transitions. [2022-02-15 02:46:38,323 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-02-15 02:46:38,323 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 02:46:38,323 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 02:46:38,323 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-02-15 02:46:38,324 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 02:46:38,324 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 02:46:38,324 INFO L85 PathProgramCache]: Analyzing trace with hash -1459295990, now seen corresponding path program 1 times [2022-02-15 02:46:38,324 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 02:46:38,324 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1405504249] [2022-02-15 02:46:38,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 02:46:39,029 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 02:46:39,030 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-02-15 02:46:39,030 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 02:46:39,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:46:39,100 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 02:46:39,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:46:39,105 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 02:46:39,773 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 02:46:39,773 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1405504249] [2022-02-15 02:46:39,773 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1405504249] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 02:46:39,773 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 02:46:39,774 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2022-02-15 02:46:39,774 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1224526230] [2022-02-15 02:46:39,774 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 02:46:39,774 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-02-15 02:46:39,775 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 02:46:39,775 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-02-15 02:46:39,775 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=202, Unknown=0, NotChecked=0, Total=272 [2022-02-15 02:46:39,775 INFO L87 Difference]: Start difference. First operand 251 states and 379 transitions. Second operand has 17 states, 16 states have (on average 3.875) internal successors, (62), 15 states have internal predecessors, (62), 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 02:46:40,546 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 02:46:40,547 INFO L93 Difference]: Finished difference Result 643 states and 987 transitions. [2022-02-15 02:46:40,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-02-15 02:46:40,547 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 3.875) internal successors, (62), 15 states have internal predecessors, (62), 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 66 [2022-02-15 02:46:40,548 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 02:46:40,550 INFO L225 Difference]: With dead ends: 643 [2022-02-15 02:46:40,550 INFO L226 Difference]: Without dead ends: 382 [2022-02-15 02:46:40,551 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 11 SyntacticMatches, 6 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 182 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=219, Invalid=651, Unknown=0, NotChecked=0, Total=870 [2022-02-15 02:46:40,552 INFO L933 BasicCegarLoop]: 182 mSDtfsCounter, 824 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 864 mSolverCounterSat, 70 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 824 SdHoareTripleChecker+Valid, 214 SdHoareTripleChecker+Invalid, 1411 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 70 IncrementalHoareTripleChecker+Valid, 864 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 477 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-02-15 02:46:40,552 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [824 Valid, 214 Invalid, 1411 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [70 Valid, 864 Invalid, 0 Unknown, 477 Unchecked, 0.5s Time] [2022-02-15 02:46:40,553 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 382 states. [2022-02-15 02:46:40,573 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 382 to 326. [2022-02-15 02:46:40,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 326 states, 321 states have (on average 1.4485981308411215) internal successors, (465), 321 states have internal predecessors, (465), 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 02:46:40,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 326 states to 326 states and 469 transitions. [2022-02-15 02:46:40,575 INFO L78 Accepts]: Start accepts. Automaton has 326 states and 469 transitions. Word has length 66 [2022-02-15 02:46:40,575 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 02:46:40,575 INFO L470 AbstractCegarLoop]: Abstraction has 326 states and 469 transitions. [2022-02-15 02:46:40,576 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 16 states have (on average 3.875) internal successors, (62), 15 states have internal predecessors, (62), 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 02:46:40,576 INFO L276 IsEmpty]: Start isEmpty. Operand 326 states and 469 transitions. [2022-02-15 02:46:40,578 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-02-15 02:46:40,578 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 02:46:40,578 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 02:46:40,578 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-02-15 02:46:40,578 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 02:46:40,578 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 02:46:40,579 INFO L85 PathProgramCache]: Analyzing trace with hash 494373208, now seen corresponding path program 1 times [2022-02-15 02:46:40,579 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 02:46:40,579 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [383538950] [2022-02-15 02:46:40,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 02:46:41,058 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 02:46:41,059 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-02-15 02:46:41,059 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 02:46:41,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:46:41,117 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 02:46:41,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:46:41,121 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 02:46:41,903 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 02:46:41,903 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [383538950] [2022-02-15 02:46:41,903 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [383538950] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 02:46:41,904 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 02:46:41,904 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-02-15 02:46:41,904 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1551620248] [2022-02-15 02:46:41,904 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 02:46:41,905 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-02-15 02:46:41,905 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 02:46:41,905 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-02-15 02:46:41,906 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=292, Unknown=0, NotChecked=0, Total=380 [2022-02-15 02:46:41,906 INFO L87 Difference]: Start difference. First operand 326 states and 469 transitions. Second operand has 20 states, 19 states have (on average 3.473684210526316) internal successors, (66), 18 states have internal predecessors, (66), 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 02:46:42,416 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 02:46:42,416 INFO L93 Difference]: Finished difference Result 528 states and 778 transitions. [2022-02-15 02:46:42,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-02-15 02:46:42,416 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 3.473684210526316) internal successors, (66), 18 states have internal predecessors, (66), 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 70 [2022-02-15 02:46:42,418 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 02:46:42,419 INFO L225 Difference]: With dead ends: 528 [2022-02-15 02:46:42,419 INFO L226 Difference]: Without dead ends: 399 [2022-02-15 02:46:42,421 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 10 SyntacticMatches, 6 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 269 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=214, Invalid=908, Unknown=0, NotChecked=0, Total=1122 [2022-02-15 02:46:42,425 INFO L933 BasicCegarLoop]: 186 mSDtfsCounter, 215 mSDsluCounter, 55 mSDsCounter, 0 mSdLazyCounter, 638 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 215 SdHoareTripleChecker+Valid, 241 SdHoareTripleChecker+Invalid, 912 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 638 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 232 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-02-15 02:46:42,427 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [215 Valid, 241 Invalid, 912 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 638 Invalid, 0 Unknown, 232 Unchecked, 0.3s Time] [2022-02-15 02:46:42,428 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 399 states. [2022-02-15 02:46:42,456 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 399 to 384. [2022-02-15 02:46:42,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 384 states, 379 states have (on average 1.4142480211081794) internal successors, (536), 379 states have internal predecessors, (536), 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 02:46:42,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 384 states to 384 states and 540 transitions. [2022-02-15 02:46:42,458 INFO L78 Accepts]: Start accepts. Automaton has 384 states and 540 transitions. Word has length 70 [2022-02-15 02:46:42,458 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 02:46:42,458 INFO L470 AbstractCegarLoop]: Abstraction has 384 states and 540 transitions. [2022-02-15 02:46:42,458 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 3.473684210526316) internal successors, (66), 18 states have internal predecessors, (66), 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 02:46:42,458 INFO L276 IsEmpty]: Start isEmpty. Operand 384 states and 540 transitions. [2022-02-15 02:46:42,463 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2022-02-15 02:46:42,463 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 02:46:42,463 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 02:46:42,463 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-02-15 02:46:42,463 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 02:46:42,463 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 02:46:42,463 INFO L85 PathProgramCache]: Analyzing trace with hash 1079401010, now seen corresponding path program 1 times [2022-02-15 02:46:42,464 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 02:46:42,464 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1449076464] [2022-02-15 02:46:42,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 02:46:42,892 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 02:46:42,893 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-02-15 02:46:42,893 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 02:46:42,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:46:42,944 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 02:46:42,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:46:42,947 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 02:46:43,695 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 02:46:43,695 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1449076464] [2022-02-15 02:46:43,695 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1449076464] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 02:46:43,695 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 02:46:43,695 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-02-15 02:46:43,696 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1440885568] [2022-02-15 02:46:43,696 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 02:46:43,696 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-02-15 02:46:43,696 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 02:46:43,696 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-02-15 02:46:43,697 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=292, Unknown=0, NotChecked=0, Total=380 [2022-02-15 02:46:43,697 INFO L87 Difference]: Start difference. First operand 384 states and 540 transitions. Second operand has 20 states, 19 states have (on average 3.526315789473684) internal successors, (67), 18 states have internal predecessors, (67), 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 02:46:44,665 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 02:46:44,665 INFO L93 Difference]: Finished difference Result 821 states and 1233 transitions. [2022-02-15 02:46:44,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-02-15 02:46:44,666 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 3.526315789473684) internal successors, (67), 18 states have internal predecessors, (67), 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 71 [2022-02-15 02:46:44,666 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 02:46:44,668 INFO L225 Difference]: With dead ends: 821 [2022-02-15 02:46:44,668 INFO L226 Difference]: Without dead ends: 519 [2022-02-15 02:46:44,669 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 10 SyntacticMatches, 6 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 288 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=279, Invalid=981, Unknown=0, NotChecked=0, Total=1260 [2022-02-15 02:46:44,670 INFO L933 BasicCegarLoop]: 176 mSDtfsCounter, 814 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 1299 mSolverCounterSat, 97 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 814 SdHoareTripleChecker+Valid, 223 SdHoareTripleChecker+Invalid, 2177 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 97 IncrementalHoareTripleChecker+Valid, 1299 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 781 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-02-15 02:46:44,670 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [814 Valid, 223 Invalid, 2177 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [97 Valid, 1299 Invalid, 0 Unknown, 781 Unchecked, 0.7s Time] [2022-02-15 02:46:44,671 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 519 states. [2022-02-15 02:46:44,685 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 519 to 365. [2022-02-15 02:46:44,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 365 states, 360 states have (on average 1.4527777777777777) internal successors, (523), 360 states have internal predecessors, (523), 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 02:46:44,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 365 states to 365 states and 527 transitions. [2022-02-15 02:46:44,686 INFO L78 Accepts]: Start accepts. Automaton has 365 states and 527 transitions. Word has length 71 [2022-02-15 02:46:44,686 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 02:46:44,687 INFO L470 AbstractCegarLoop]: Abstraction has 365 states and 527 transitions. [2022-02-15 02:46:44,687 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 3.526315789473684) internal successors, (67), 18 states have internal predecessors, (67), 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 02:46:44,687 INFO L276 IsEmpty]: Start isEmpty. Operand 365 states and 527 transitions. [2022-02-15 02:46:44,697 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2022-02-15 02:46:44,698 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 02:46:44,698 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 02:46:44,698 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-02-15 02:46:44,698 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 02:46:44,698 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 02:46:44,698 INFO L85 PathProgramCache]: Analyzing trace with hash -984809258, now seen corresponding path program 1 times [2022-02-15 02:46:44,698 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 02:46:44,699 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1411925068] [2022-02-15 02:46:44,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 02:46:44,767 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 02:46:44,767 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-02-15 02:46:44,834 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 02:46:45,218 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 02:46:45,218 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2022-02-15 02:46:45,218 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 02:46:45,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:46:45,270 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 02:46:45,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:46:45,274 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 02:46:45,575 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 02:46:45,575 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1411925068] [2022-02-15 02:46:45,575 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1411925068] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 02:46:45,575 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 02:46:45,576 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-02-15 02:46:45,576 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [709448573] [2022-02-15 02:46:45,576 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 02:46:45,576 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-02-15 02:46:45,576 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 02:46:45,577 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-02-15 02:46:45,577 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=341, Unknown=0, NotChecked=0, Total=420 [2022-02-15 02:46:45,577 INFO L87 Difference]: Start difference. First operand 365 states and 527 transitions. Second operand has 21 states, 20 states have (on average 4.15) internal successors, (83), 19 states have internal predecessors, (83), 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 02:46:46,913 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 02:46:46,913 INFO L93 Difference]: Finished difference Result 662 states and 934 transitions. [2022-02-15 02:46:46,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-02-15 02:46:46,916 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 20 states have (on average 4.15) internal successors, (83), 19 states have internal predecessors, (83), 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 87 [2022-02-15 02:46:46,922 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 02:46:46,927 INFO L225 Difference]: With dead ends: 662 [2022-02-15 02:46:46,927 INFO L226 Difference]: Without dead ends: 467 [2022-02-15 02:46:46,928 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 32 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 02:46:46,932 INFO L933 BasicCegarLoop]: 194 mSDtfsCounter, 915 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 2214 mSolverCounterSat, 63 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 915 SdHoareTripleChecker+Valid, 246 SdHoareTripleChecker+Invalid, 2277 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 63 IncrementalHoareTripleChecker+Valid, 2214 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-02-15 02:46:46,937 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [915 Valid, 246 Invalid, 2277 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [63 Valid, 2214 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-02-15 02:46:46,938 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 467 states. [2022-02-15 02:46:46,979 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 467 to 384. [2022-02-15 02:46:46,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 384 states, 379 states have (on average 1.4300791556728232) internal successors, (542), 379 states have internal predecessors, (542), 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 02:46:46,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 384 states to 384 states and 546 transitions. [2022-02-15 02:46:46,981 INFO L78 Accepts]: Start accepts. Automaton has 384 states and 546 transitions. Word has length 87 [2022-02-15 02:46:46,982 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 02:46:46,982 INFO L470 AbstractCegarLoop]: Abstraction has 384 states and 546 transitions. [2022-02-15 02:46:46,982 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 20 states have (on average 4.15) internal successors, (83), 19 states have internal predecessors, (83), 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 02:46:46,982 INFO L276 IsEmpty]: Start isEmpty. Operand 384 states and 546 transitions. [2022-02-15 02:46:46,983 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2022-02-15 02:46:46,983 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 02:46:46,983 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 02:46:46,988 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-02-15 02:46:46,988 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 02:46:46,988 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 02:46:46,988 INFO L85 PathProgramCache]: Analyzing trace with hash -736662764, now seen corresponding path program 1 times [2022-02-15 02:46:46,989 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 02:46:46,989 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2055944134] [2022-02-15 02:46:46,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 02:46:47,083 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 02:46:47,084 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-02-15 02:46:47,483 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 02:46:47,550 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 02:46:47,550 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2022-02-15 02:46:47,550 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 02:46:47,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:46:47,641 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 02:46:47,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:46:47,660 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 02:46:48,368 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 02:46:48,368 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2055944134] [2022-02-15 02:46:48,368 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [2055944134] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 02:46:48,368 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 02:46:48,369 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [23] imperfect sequences [] total 23 [2022-02-15 02:46:48,369 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [964976572] [2022-02-15 02:46:48,369 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 02:46:48,369 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-02-15 02:46:48,369 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 02:46:48,369 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-02-15 02:46:48,370 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=401, Unknown=0, NotChecked=0, Total=506 [2022-02-15 02:46:48,370 INFO L87 Difference]: Start difference. First operand 384 states and 546 transitions. Second operand has 23 states, 22 states have (on average 3.772727272727273) internal successors, (83), 21 states have internal predecessors, (83), 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 02:46:49,728 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 02:46:49,728 INFO L93 Difference]: Finished difference Result 978 states and 1430 transitions. [2022-02-15 02:46:49,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-02-15 02:46:49,729 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 22 states have (on average 3.772727272727273) internal successors, (83), 21 states have internal predecessors, (83), 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 87 [2022-02-15 02:46:49,729 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 02:46:49,731 INFO L225 Difference]: With dead ends: 978 [2022-02-15 02:46:49,731 INFO L226 Difference]: Without dead ends: 584 [2022-02-15 02:46:49,732 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 25 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 02:46:49,733 INFO L933 BasicCegarLoop]: 192 mSDtfsCounter, 990 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 2434 mSolverCounterSat, 96 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 990 SdHoareTripleChecker+Valid, 244 SdHoareTripleChecker+Invalid, 3431 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 96 IncrementalHoareTripleChecker+Valid, 2434 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 901 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-02-15 02:46:49,733 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [990 Valid, 244 Invalid, 3431 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [96 Valid, 2434 Invalid, 0 Unknown, 901 Unchecked, 1.0s Time] [2022-02-15 02:46:49,734 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 584 states. [2022-02-15 02:46:49,754 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 584 to 475. [2022-02-15 02:46:49,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 475 states, 470 states have (on average 1.4680851063829787) internal successors, (690), 470 states have internal predecessors, (690), 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 02:46:49,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 475 states to 475 states and 694 transitions. [2022-02-15 02:46:49,756 INFO L78 Accepts]: Start accepts. Automaton has 475 states and 694 transitions. Word has length 87 [2022-02-15 02:46:49,756 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 02:46:49,756 INFO L470 AbstractCegarLoop]: Abstraction has 475 states and 694 transitions. [2022-02-15 02:46:49,756 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 22 states have (on average 3.772727272727273) internal successors, (83), 21 states have internal predecessors, (83), 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 02:46:49,756 INFO L276 IsEmpty]: Start isEmpty. Operand 475 states and 694 transitions. [2022-02-15 02:46:49,757 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2022-02-15 02:46:49,757 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 02:46:49,757 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, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 02:46:49,757 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-02-15 02:46:49,758 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 02:46:49,758 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 02:46:49,758 INFO L85 PathProgramCache]: Analyzing trace with hash 136128205, now seen corresponding path program 1 times [2022-02-15 02:46:49,758 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 02:46:49,758 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1912655287] [2022-02-15 02:46:49,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 02:46:49,825 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 02:46:49,825 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-02-15 02:46:50,220 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 02:46:50,270 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 02:46:50,270 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2022-02-15 02:46:50,271 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 02:46:50,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:46:50,349 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 02:46:50,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:46:50,355 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 02:46:50,489 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 02:46:50,489 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1912655287] [2022-02-15 02:46:50,489 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1912655287] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 02:46:50,489 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 02:46:50,489 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-02-15 02:46:50,489 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [243351483] [2022-02-15 02:46:50,489 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 02:46:50,490 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-02-15 02:46:50,490 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 02:46:50,490 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-02-15 02:46:50,490 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-02-15 02:46:50,490 INFO L87 Difference]: Start difference. First operand 475 states and 694 transitions. Second operand has 16 states, 15 states have (on average 5.533333333333333) internal successors, (83), 14 states have internal predecessors, (83), 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 02:46:51,352 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 02:46:51,353 INFO L93 Difference]: Finished difference Result 1123 states and 1651 transitions. [2022-02-15 02:46:51,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-02-15 02:46:51,353 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 5.533333333333333) internal successors, (83), 14 states have internal predecessors, (83), 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 88 [2022-02-15 02:46:51,353 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 02:46:51,355 INFO L225 Difference]: With dead ends: 1123 [2022-02-15 02:46:51,355 INFO L226 Difference]: Without dead ends: 656 [2022-02-15 02:46:51,356 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 161 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=214, Invalid=598, Unknown=0, NotChecked=0, Total=812 [2022-02-15 02:46:51,357 INFO L933 BasicCegarLoop]: 196 mSDtfsCounter, 754 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 1555 mSolverCounterSat, 68 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 754 SdHoareTripleChecker+Valid, 233 SdHoareTripleChecker+Invalid, 1623 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 68 IncrementalHoareTripleChecker+Valid, 1555 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-02-15 02:46:51,357 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [754 Valid, 233 Invalid, 1623 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [68 Valid, 1555 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-02-15 02:46:51,358 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 656 states. [2022-02-15 02:46:51,382 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 656 to 579. [2022-02-15 02:46:51,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 579 states, 574 states have (on average 1.4233449477351916) internal successors, (817), 574 states have internal predecessors, (817), 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 02:46:51,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 579 states to 579 states and 821 transitions. [2022-02-15 02:46:51,384 INFO L78 Accepts]: Start accepts. Automaton has 579 states and 821 transitions. Word has length 88 [2022-02-15 02:46:51,384 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 02:46:51,384 INFO L470 AbstractCegarLoop]: Abstraction has 579 states and 821 transitions. [2022-02-15 02:46:51,385 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 5.533333333333333) internal successors, (83), 14 states have internal predecessors, (83), 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 02:46:51,385 INFO L276 IsEmpty]: Start isEmpty. Operand 579 states and 821 transitions. [2022-02-15 02:46:51,386 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2022-02-15 02:46:51,386 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 02:46:51,386 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 02:46:51,386 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-02-15 02:46:51,386 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 02:46:51,386 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 02:46:51,386 INFO L85 PathProgramCache]: Analyzing trace with hash -1812775173, now seen corresponding path program 1 times [2022-02-15 02:46:51,386 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 02:46:51,386 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1071153438] [2022-02-15 02:46:51,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 02:46:51,434 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 3 AssignedVariables, 1 ReadonlyVariables, Eigenvalues: {0={1=1, 2=1}, 1={1=2}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:46:51,434 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-02-15 02:46:51,463 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 3 AssignedVariables, 1 ReadonlyVariables, Eigenvalues: {0={1=1, 2=1}, 1={1=2}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:46:51,923 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 02:46:51,923 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2022-02-15 02:46:51,923 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 02:46:51,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:46:52,003 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 02:46:52,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:46:52,020 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 02:46:52,297 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 02:46:52,297 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1071153438] [2022-02-15 02:46:52,297 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1071153438] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 02:46:52,297 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 02:46:52,297 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2022-02-15 02:46:52,298 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1743513925] [2022-02-15 02:46:52,298 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 02:46:52,298 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-02-15 02:46:52,298 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 02:46:52,298 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-02-15 02:46:52,298 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=210, Unknown=0, NotChecked=0, Total=272 [2022-02-15 02:46:52,299 INFO L87 Difference]: Start difference. First operand 579 states and 821 transitions. Second operand has 17 states, 16 states have (on average 5.8125) internal successors, (93), 15 states have internal predecessors, (93), 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 02:46:52,953 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 02:46:52,953 INFO L93 Difference]: Finished difference Result 971 states and 1363 transitions. [2022-02-15 02:46:52,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-02-15 02:46:52,954 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 5.8125) internal successors, (93), 15 states have internal predecessors, (93), 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 97 [2022-02-15 02:46:52,954 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 02:46:52,956 INFO L225 Difference]: With dead ends: 971 [2022-02-15 02:46:52,956 INFO L226 Difference]: Without dead ends: 406 [2022-02-15 02:46:52,960 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 45 SyntacticMatches, 1 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 200 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=204, Invalid=726, Unknown=0, NotChecked=0, Total=930 [2022-02-15 02:46:52,960 INFO L933 BasicCegarLoop]: 186 mSDtfsCounter, 764 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 899 mSolverCounterSat, 59 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 764 SdHoareTripleChecker+Valid, 203 SdHoareTripleChecker+Invalid, 958 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 59 IncrementalHoareTripleChecker+Valid, 899 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-02-15 02:46:52,960 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [764 Valid, 203 Invalid, 958 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [59 Valid, 899 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-02-15 02:46:52,961 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 406 states. [2022-02-15 02:46:52,982 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 406 to 375. [2022-02-15 02:46:52,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 375 states, 370 states have (on average 1.3810810810810812) internal successors, (511), 370 states have internal predecessors, (511), 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 02:46:52,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 375 states to 375 states and 515 transitions. [2022-02-15 02:46:52,985 INFO L78 Accepts]: Start accepts. Automaton has 375 states and 515 transitions. Word has length 97 [2022-02-15 02:46:52,985 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 02:46:52,987 INFO L470 AbstractCegarLoop]: Abstraction has 375 states and 515 transitions. [2022-02-15 02:46:52,987 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 16 states have (on average 5.8125) internal successors, (93), 15 states have internal predecessors, (93), 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 02:46:52,987 INFO L276 IsEmpty]: Start isEmpty. Operand 375 states and 515 transitions. [2022-02-15 02:46:52,988 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2022-02-15 02:46:52,988 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 02:46:52,988 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 02:46:52,988 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-02-15 02:46:52,988 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 02:46:52,988 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 02:46:52,989 INFO L85 PathProgramCache]: Analyzing trace with hash 1682297491, now seen corresponding path program 1 times [2022-02-15 02:46:52,989 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 02:46:52,989 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1782442807] [2022-02-15 02:46:52,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 02:46:53,046 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 4 AssignedVariables, 1 ReadonlyVariables, Eigenvalues: {0={1=2, 2=1}, 1={1=2}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:46:53,046 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-02-15 02:46:53,073 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 3 AssignedVariables, 1 ReadonlyVariables, Eigenvalues: {0={1=1, 2=1}, 1={1=2}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:46:53,563 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 02:46:53,563 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2022-02-15 02:46:53,564 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 02:46:53,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:46:53,609 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 02:46:53,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:46:53,612 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 02:46:53,995 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 02:46:53,996 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1782442807] [2022-02-15 02:46:53,996 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1782442807] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 02:46:53,996 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 02:46:53,996 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [24] imperfect sequences [] total 24 [2022-02-15 02:46:53,996 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [350322513] [2022-02-15 02:46:53,996 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 02:46:53,996 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-02-15 02:46:53,996 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 02:46:53,997 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-02-15 02:46:53,997 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=142, Invalid=410, Unknown=0, NotChecked=0, Total=552 [2022-02-15 02:46:53,997 INFO L87 Difference]: Start difference. First operand 375 states and 515 transitions. Second operand has 24 states, 24 states have (on average 3.9166666666666665) internal successors, (94), 23 states have internal predecessors, (94), 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 02:46:55,341 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 02:46:55,341 INFO L93 Difference]: Finished difference Result 1147 states and 1582 transitions. [2022-02-15 02:46:55,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-02-15 02:46:55,341 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 3.9166666666666665) internal successors, (94), 23 states have internal predecessors, (94), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 98 [2022-02-15 02:46:55,341 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 02:46:55,344 INFO L225 Difference]: With dead ends: 1147 [2022-02-15 02:46:55,344 INFO L226 Difference]: Without dead ends: 799 [2022-02-15 02:46:55,345 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 497 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=420, Invalid=1560, Unknown=0, NotChecked=0, Total=1980 [2022-02-15 02:46:55,345 INFO L933 BasicCegarLoop]: 251 mSDtfsCounter, 903 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 2602 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 903 SdHoareTripleChecker+Valid, 288 SdHoareTripleChecker+Invalid, 2644 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 2602 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-02-15 02:46:55,345 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [903 Valid, 288 Invalid, 2644 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 2602 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-02-15 02:46:55,346 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 799 states. [2022-02-15 02:46:55,385 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 799 to 654. [2022-02-15 02:46:55,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 654 states, 649 states have (on average 1.4067796610169492) internal successors, (913), 649 states have internal predecessors, (913), 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 02:46:55,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 654 states to 654 states and 917 transitions. [2022-02-15 02:46:55,387 INFO L78 Accepts]: Start accepts. Automaton has 654 states and 917 transitions. Word has length 98 [2022-02-15 02:46:55,387 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 02:46:55,387 INFO L470 AbstractCegarLoop]: Abstraction has 654 states and 917 transitions. [2022-02-15 02:46:55,387 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 3.9166666666666665) internal successors, (94), 23 states have internal predecessors, (94), 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 02:46:55,387 INFO L276 IsEmpty]: Start isEmpty. Operand 654 states and 917 transitions. [2022-02-15 02:46:55,388 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2022-02-15 02:46:55,388 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 02:46:55,389 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 02:46:55,389 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-02-15 02:46:55,389 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 02:46:55,389 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 02:46:55,389 INFO L85 PathProgramCache]: Analyzing trace with hash -1230434312, now seen corresponding path program 1 times [2022-02-15 02:46:55,389 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 02:46:55,389 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1265527801] [2022-02-15 02:46:55,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 02:46:55,451 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 02:46:55,495 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 5 AssignedVariables, 1 ReadonlyVariables, Eigenvalues: {0={1=3, 2=1}, 1={1=2}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:46:55,495 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2022-02-15 02:46:55,915 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 02:46:55,975 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 02:46:56,018 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 5 AssignedVariables, 1 ReadonlyVariables, Eigenvalues: {0={1=3, 2=1}, 1={1=2}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:46:56,019 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2022-02-15 02:46:56,019 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 02:46:56,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:46:56,080 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 02:46:56,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:46:56,083 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 02:46:56,946 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 02:46:56,946 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1265527801] [2022-02-15 02:46:56,946 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1265527801] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 02:46:56,946 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 02:46:56,946 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [28] imperfect sequences [] total 28 [2022-02-15 02:46:56,946 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1417029701] [2022-02-15 02:46:56,946 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 02:46:56,947 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-02-15 02:46:56,947 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 02:46:56,947 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-02-15 02:46:56,947 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=144, Invalid=668, Unknown=0, NotChecked=0, Total=812 [2022-02-15 02:46:56,947 INFO L87 Difference]: Start difference. First operand 654 states and 917 transitions. Second operand has 28 states, 27 states have (on average 3.8518518518518516) internal successors, (104), 26 states have internal predecessors, (104), 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 02:46:58,901 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 02:46:58,901 INFO L93 Difference]: Finished difference Result 1558 states and 2211 transitions. [2022-02-15 02:46:58,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-02-15 02:46:58,902 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 27 states have (on average 3.8518518518518516) internal successors, (104), 26 states have internal predecessors, (104), 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 108 [2022-02-15 02:46:58,902 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 02:46:58,904 INFO L225 Difference]: With dead ends: 1558 [2022-02-15 02:46:58,904 INFO L226 Difference]: Without dead ends: 894 [2022-02-15 02:46:58,906 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 41 SyntacticMatches, 6 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 822 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=437, Invalid=2319, Unknown=0, NotChecked=0, Total=2756 [2022-02-15 02:46:58,907 INFO L933 BasicCegarLoop]: 191 mSDtfsCounter, 984 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 3199 mSolverCounterSat, 116 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 984 SdHoareTripleChecker+Valid, 248 SdHoareTripleChecker+Invalid, 4100 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 116 IncrementalHoareTripleChecker+Valid, 3199 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 785 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-02-15 02:46:58,907 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [984 Valid, 248 Invalid, 4100 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [116 Valid, 3199 Invalid, 0 Unknown, 785 Unchecked, 1.4s Time] [2022-02-15 02:46:58,908 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 894 states. [2022-02-15 02:46:58,964 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 894 to 801. [2022-02-15 02:46:58,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 801 states, 796 states have (on average 1.3944723618090453) internal successors, (1110), 796 states have internal predecessors, (1110), 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 02:46:58,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 801 states to 801 states and 1114 transitions. [2022-02-15 02:46:58,967 INFO L78 Accepts]: Start accepts. Automaton has 801 states and 1114 transitions. Word has length 108 [2022-02-15 02:46:58,967 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 02:46:58,967 INFO L470 AbstractCegarLoop]: Abstraction has 801 states and 1114 transitions. [2022-02-15 02:46:58,967 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 27 states have (on average 3.8518518518518516) internal successors, (104), 26 states have internal predecessors, (104), 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 02:46:58,967 INFO L276 IsEmpty]: Start isEmpty. Operand 801 states and 1114 transitions. [2022-02-15 02:46:58,974 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2022-02-15 02:46:58,974 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 02:46:58,974 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 02:46:58,974 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-02-15 02:46:58,974 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 02:46:58,975 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 02:46:58,975 INFO L85 PathProgramCache]: Analyzing trace with hash 838411035, now seen corresponding path program 1 times [2022-02-15 02:46:58,975 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 02:46:58,975 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1515882945] [2022-02-15 02:46:58,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 02:46:59,006 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 3 AssignedVariables, 1 ReadonlyVariables, Eigenvalues: {0={1=1, 2=1}, 1={1=2}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:46:59,083 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 02:46:59,084 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2022-02-15 02:46:59,142 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 02:46:59,169 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 3 AssignedVariables, 1 ReadonlyVariables, Eigenvalues: {0={1=1, 2=1}, 1={1=2}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:46:59,606 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 02:46:59,606 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2022-02-15 02:46:59,606 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 02:46:59,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:46:59,682 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 02:46:59,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:46:59,686 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 02:47:00,059 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 02:47:00,059 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1515882945] [2022-02-15 02:47:00,059 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1515882945] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 02:47:00,059 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 02:47:00,059 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [24] imperfect sequences [] total 24 [2022-02-15 02:47:00,059 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2075335766] [2022-02-15 02:47:00,059 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 02:47:00,060 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-02-15 02:47:00,060 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 02:47:00,060 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-02-15 02:47:00,060 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=94, Invalid=458, Unknown=0, NotChecked=0, Total=552 [2022-02-15 02:47:00,061 INFO L87 Difference]: Start difference. First operand 801 states and 1114 transitions. Second operand has 24 states, 23 states have (on average 4.913043478260869) internal successors, (113), 22 states have internal predecessors, (113), 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 02:47:01,622 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 02:47:01,622 INFO L93 Difference]: Finished difference Result 1681 states and 2321 transitions. [2022-02-15 02:47:01,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-02-15 02:47:01,623 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 23 states have (on average 4.913043478260869) internal successors, (113), 22 states have internal predecessors, (113), 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 118 [2022-02-15 02:47:01,623 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 02:47:01,625 INFO L225 Difference]: With dead ends: 1681 [2022-02-15 02:47:01,625 INFO L226 Difference]: Without dead ends: 894 [2022-02-15 02:47:01,628 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 489 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=314, Invalid=1666, Unknown=0, NotChecked=0, Total=1980 [2022-02-15 02:47:01,628 INFO L933 BasicCegarLoop]: 261 mSDtfsCounter, 1175 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 3911 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1175 SdHoareTripleChecker+Valid, 323 SdHoareTripleChecker+Invalid, 3966 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 3911 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-02-15 02:47:01,628 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1175 Valid, 323 Invalid, 3966 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [55 Valid, 3911 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-02-15 02:47:01,629 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 894 states. [2022-02-15 02:47:01,686 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 894 to 821. [2022-02-15 02:47:01,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 821 states, 816 states have (on average 1.3860294117647058) internal successors, (1131), 816 states have internal predecessors, (1131), 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 02:47:01,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 821 states to 821 states and 1135 transitions. [2022-02-15 02:47:01,689 INFO L78 Accepts]: Start accepts. Automaton has 821 states and 1135 transitions. Word has length 118 [2022-02-15 02:47:01,689 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 02:47:01,689 INFO L470 AbstractCegarLoop]: Abstraction has 821 states and 1135 transitions. [2022-02-15 02:47:01,689 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 23 states have (on average 4.913043478260869) internal successors, (113), 22 states have internal predecessors, (113), 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 02:47:01,689 INFO L276 IsEmpty]: Start isEmpty. Operand 821 states and 1135 transitions. [2022-02-15 02:47:01,691 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2022-02-15 02:47:01,691 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 02:47:01,691 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 02:47:01,691 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-02-15 02:47:01,691 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 02:47:01,691 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 02:47:01,691 INFO L85 PathProgramCache]: Analyzing trace with hash -1548098471, now seen corresponding path program 1 times [2022-02-15 02:47:01,691 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 02:47:01,692 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1400693761] [2022-02-15 02:47:01,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 02:47:01,717 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 3 AssignedVariables, 1 ReadonlyVariables, Eigenvalues: {0={1=1, 2=1}, 1={1=2}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:47:01,786 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 02:47:01,786 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2022-02-15 02:47:01,807 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 3 AssignedVariables, 1 ReadonlyVariables, Eigenvalues: {0={1=1, 2=1}, 1={1=2}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:47:02,234 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 02:47:02,285 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 02:47:02,286 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2022-02-15 02:47:02,286 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 02:47:02,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:47:02,355 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 02:47:02,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:47:02,358 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 02:47:02,794 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 02:47:02,794 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1400693761] [2022-02-15 02:47:02,794 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1400693761] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 02:47:02,794 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 02:47:02,794 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [28] imperfect sequences [] total 28 [2022-02-15 02:47:02,794 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [671909864] [2022-02-15 02:47:02,794 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 02:47:02,796 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-02-15 02:47:02,796 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 02:47:02,796 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-02-15 02:47:02,796 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=173, Invalid=583, Unknown=0, NotChecked=0, Total=756 [2022-02-15 02:47:02,797 INFO L87 Difference]: Start difference. First operand 821 states and 1135 transitions. Second operand has 28 states, 28 states have (on average 4.035714285714286) internal successors, (113), 27 states have internal predecessors, (113), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 02:47:04,587 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 02:47:04,587 INFO L93 Difference]: Finished difference Result 3147 states and 4371 transitions. [2022-02-15 02:47:04,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-02-15 02:47:04,588 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 4.035714285714286) internal successors, (113), 27 states have internal predecessors, (113), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 118 [2022-02-15 02:47:04,588 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 02:47:04,593 INFO L225 Difference]: With dead ends: 3147 [2022-02-15 02:47:04,594 INFO L226 Difference]: Without dead ends: 2340 [2022-02-15 02:47:04,596 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 807 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=513, Invalid=2243, Unknown=0, NotChecked=0, Total=2756 [2022-02-15 02:47:04,596 INFO L933 BasicCegarLoop]: 308 mSDtfsCounter, 1000 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 3909 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1000 SdHoareTripleChecker+Valid, 350 SdHoareTripleChecker+Invalid, 3963 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 3909 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-02-15 02:47:04,597 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1000 Valid, 350 Invalid, 3963 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 3909 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-02-15 02:47:04,598 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2340 states. [2022-02-15 02:47:04,766 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2340 to 2091. [2022-02-15 02:47:04,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2091 states, 2086 states have (on average 1.4093959731543624) internal successors, (2940), 2086 states have internal predecessors, (2940), 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 02:47:04,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2091 states to 2091 states and 2944 transitions. [2022-02-15 02:47:04,772 INFO L78 Accepts]: Start accepts. Automaton has 2091 states and 2944 transitions. Word has length 118 [2022-02-15 02:47:04,772 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 02:47:04,772 INFO L470 AbstractCegarLoop]: Abstraction has 2091 states and 2944 transitions. [2022-02-15 02:47:04,773 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 4.035714285714286) internal successors, (113), 27 states have internal predecessors, (113), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 02:47:04,773 INFO L276 IsEmpty]: Start isEmpty. Operand 2091 states and 2944 transitions. [2022-02-15 02:47:04,776 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2022-02-15 02:47:04,776 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 02:47:04,776 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 02:47:04,776 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-02-15 02:47:04,776 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 02:47:04,776 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 02:47:04,776 INFO L85 PathProgramCache]: Analyzing trace with hash -763937149, now seen corresponding path program 1 times [2022-02-15 02:47:04,776 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 02:47:04,776 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [413061940] [2022-02-15 02:47:04,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 02:47:04,799 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 3 AssignedVariables, 1 ReadonlyVariables, Eigenvalues: {0={1=1, 2=1}, 1={1=2}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:47:04,858 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 02:47:04,858 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2022-02-15 02:47:04,900 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 02:47:04,920 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 3 AssignedVariables, 1 ReadonlyVariables, Eigenvalues: {0={1=1, 2=1}, 1={1=2}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:47:05,361 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 02:47:05,361 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2022-02-15 02:47:05,361 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 02:47:05,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:47:05,435 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 02:47:05,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:47:05,439 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 02:47:05,925 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 02:47:05,925 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [413061940] [2022-02-15 02:47:05,925 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [413061940] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 02:47:05,925 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 02:47:05,925 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-02-15 02:47:05,926 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1670167350] [2022-02-15 02:47:05,926 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 02:47:05,927 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-02-15 02:47:05,927 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 02:47:05,927 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-02-15 02:47:05,927 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=382, Unknown=0, NotChecked=0, Total=462 [2022-02-15 02:47:05,928 INFO L87 Difference]: Start difference. First operand 2091 states and 2944 transitions. Second operand has 22 states, 21 states have (on average 5.428571428571429) internal successors, (114), 20 states have internal predecessors, (114), 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 02:47:07,262 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 02:47:07,263 INFO L93 Difference]: Finished difference Result 4373 states and 6104 transitions. [2022-02-15 02:47:07,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-02-15 02:47:07,263 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 21 states have (on average 5.428571428571429) internal successors, (114), 20 states have internal predecessors, (114), 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 119 [2022-02-15 02:47:07,263 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 02:47:07,269 INFO L225 Difference]: With dead ends: 4373 [2022-02-15 02:47:07,269 INFO L226 Difference]: Without dead ends: 2296 [2022-02-15 02:47:07,273 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 63 SyntacticMatches, 1 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 385 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=268, Invalid=1372, Unknown=0, NotChecked=0, Total=1640 [2022-02-15 02:47:07,273 INFO L933 BasicCegarLoop]: 192 mSDtfsCounter, 787 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 2051 mSolverCounterSat, 69 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 787 SdHoareTripleChecker+Valid, 229 SdHoareTripleChecker+Invalid, 2120 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 69 IncrementalHoareTripleChecker+Valid, 2051 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-02-15 02:47:07,273 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [787 Valid, 229 Invalid, 2120 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [69 Valid, 2051 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-02-15 02:47:07,275 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2296 states. [2022-02-15 02:47:07,428 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2296 to 2134. [2022-02-15 02:47:07,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2134 states, 2129 states have (on average 1.4048849224988258) internal successors, (2991), 2129 states have internal predecessors, (2991), 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 02:47:07,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2134 states to 2134 states and 2995 transitions. [2022-02-15 02:47:07,434 INFO L78 Accepts]: Start accepts. Automaton has 2134 states and 2995 transitions. Word has length 119 [2022-02-15 02:47:07,434 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 02:47:07,434 INFO L470 AbstractCegarLoop]: Abstraction has 2134 states and 2995 transitions. [2022-02-15 02:47:07,434 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 21 states have (on average 5.428571428571429) internal successors, (114), 20 states have internal predecessors, (114), 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 02:47:07,434 INFO L276 IsEmpty]: Start isEmpty. Operand 2134 states and 2995 transitions. [2022-02-15 02:47:07,437 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2022-02-15 02:47:07,437 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 02:47:07,437 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 02:47:07,437 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-02-15 02:47:07,437 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 02:47:07,438 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 02:47:07,438 INFO L85 PathProgramCache]: Analyzing trace with hash 2049407, now seen corresponding path program 1 times [2022-02-15 02:47:07,438 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 02:47:07,438 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1912073719] [2022-02-15 02:47:07,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 02:47:07,464 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 3 AssignedVariables, 1 ReadonlyVariables, Eigenvalues: {0={1=1, 2=1}, 1={1=2}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:47:07,596 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 7 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=5, 2=1}, 1={1=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:47:07,597 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2022-02-15 02:47:07,657 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 02:47:07,684 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 3 AssignedVariables, 1 ReadonlyVariables, Eigenvalues: {0={1=1, 2=1}, 1={1=2}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:47:11,037 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 9 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=7, 2=1}, 1={1=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:47:11,037 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2022-02-15 02:47:11,037 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 02:47:11,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:47:11,103 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 02:47:11,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:47:11,105 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 02:47:11,802 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 02:47:11,802 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1912073719] [2022-02-15 02:47:11,802 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1912073719] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 02:47:11,802 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 02:47:11,802 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2022-02-15 02:47:11,803 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [270463103] [2022-02-15 02:47:11,803 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 02:47:11,803 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-02-15 02:47:11,803 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 02:47:11,803 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-02-15 02:47:11,803 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=102, Invalid=498, Unknown=0, NotChecked=0, Total=600 [2022-02-15 02:47:11,804 INFO L87 Difference]: Start difference. First operand 2134 states and 2995 transitions. Second operand has 25 states, 24 states have (on average 4.75) internal successors, (114), 23 states have internal predecessors, (114), 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 02:47:13,694 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 02:47:13,694 INFO L93 Difference]: Finished difference Result 4380 states and 6120 transitions. [2022-02-15 02:47:13,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2022-02-15 02:47:13,695 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 24 states have (on average 4.75) internal successors, (114), 23 states have internal predecessors, (114), 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 119 [2022-02-15 02:47:13,695 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 02:47:13,701 INFO L225 Difference]: With dead ends: 4380 [2022-02-15 02:47:13,701 INFO L226 Difference]: Without dead ends: 2260 [2022-02-15 02:47:13,704 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 46 SyntacticMatches, 12 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 686 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=340, Invalid=1822, Unknown=0, NotChecked=0, Total=2162 [2022-02-15 02:47:13,704 INFO L933 BasicCegarLoop]: 262 mSDtfsCounter, 1201 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 3693 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1201 SdHoareTripleChecker+Valid, 314 SdHoareTripleChecker+Invalid, 3748 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 3693 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-02-15 02:47:13,705 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1201 Valid, 314 Invalid, 3748 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [55 Valid, 3693 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-02-15 02:47:13,706 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2260 states. [2022-02-15 02:47:13,889 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2260 to 2160. [2022-02-15 02:47:13,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2160 states, 2155 states have (on average 1.4004640371229697) internal successors, (3018), 2155 states have internal predecessors, (3018), 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 02:47:13,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2160 states to 2160 states and 3022 transitions. [2022-02-15 02:47:13,894 INFO L78 Accepts]: Start accepts. Automaton has 2160 states and 3022 transitions. Word has length 119 [2022-02-15 02:47:13,894 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 02:47:13,894 INFO L470 AbstractCegarLoop]: Abstraction has 2160 states and 3022 transitions. [2022-02-15 02:47:13,895 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 24 states have (on average 4.75) internal successors, (114), 23 states have internal predecessors, (114), 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 02:47:13,895 INFO L276 IsEmpty]: Start isEmpty. Operand 2160 states and 3022 transitions. [2022-02-15 02:47:13,898 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2022-02-15 02:47:13,898 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 02:47:13,898 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 02:47:13,898 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-02-15 02:47:13,898 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 02:47:13,898 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 02:47:13,898 INFO L85 PathProgramCache]: Analyzing trace with hash 1868863255, now seen corresponding path program 1 times [2022-02-15 02:47:13,898 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 02:47:13,898 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2055656393] [2022-02-15 02:47:13,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 02:47:13,927 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 3 AssignedVariables, 1 ReadonlyVariables, Eigenvalues: {0={1=1, 2=1}, 1={1=2}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:47:13,929 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-15 02:47:13,930 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-02-15 02:47:13,930 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2022-02-15 02:47:13,986 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 02:47:14,011 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 3 AssignedVariables, 1 ReadonlyVariables, Eigenvalues: {0={1=1, 2=1}, 1={1=2}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:47:14,013 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-15 02:47:14,013 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-02-15 02:47:14,013 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2022-02-15 02:47:14,013 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 02:47:14,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:47:14,072 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 02:47:14,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:47:14,075 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 02:47:14,694 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 02:47:14,694 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2055656393] [2022-02-15 02:47:14,694 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [2055656393] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 02:47:14,694 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 02:47:14,694 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2022-02-15 02:47:14,694 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1953258580] [2022-02-15 02:47:14,694 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 02:47:14,694 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-02-15 02:47:14,694 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 02:47:14,695 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-02-15 02:47:14,695 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=543, Unknown=0, NotChecked=0, Total=650 [2022-02-15 02:47:14,695 INFO L87 Difference]: Start difference. First operand 2160 states and 3022 transitions. Second operand has 25 states, 24 states have (on average 4.791666666666667) internal successors, (115), 23 states have internal predecessors, (115), 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 02:47:16,613 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 02:47:16,613 INFO L93 Difference]: Finished difference Result 5356 states and 7503 transitions. [2022-02-15 02:47:16,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2022-02-15 02:47:16,613 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 24 states have (on average 4.791666666666667) internal successors, (115), 23 states have internal predecessors, (115), 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 120 [2022-02-15 02:47:16,613 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 02:47:16,624 INFO L225 Difference]: With dead ends: 5356 [2022-02-15 02:47:16,625 INFO L226 Difference]: Without dead ends: 3210 [2022-02-15 02:47:16,641 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 45 SyntacticMatches, 12 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 711 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=343, Invalid=1913, Unknown=0, NotChecked=0, Total=2256 [2022-02-15 02:47:16,642 INFO L933 BasicCegarLoop]: 344 mSDtfsCounter, 673 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 3760 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 673 SdHoareTripleChecker+Valid, 391 SdHoareTripleChecker+Invalid, 3792 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 3760 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-02-15 02:47:16,643 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [673 Valid, 391 Invalid, 3792 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 3760 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-02-15 02:47:16,645 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3210 states. [2022-02-15 02:47:16,856 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3210 to 2180. [2022-02-15 02:47:16,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2180 states, 2175 states have (on average 1.3981609195402298) internal successors, (3041), 2175 states have internal predecessors, (3041), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 02:47:16,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2180 states to 2180 states and 3045 transitions. [2022-02-15 02:47:16,861 INFO L78 Accepts]: Start accepts. Automaton has 2180 states and 3045 transitions. Word has length 120 [2022-02-15 02:47:16,862 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 02:47:16,862 INFO L470 AbstractCegarLoop]: Abstraction has 2180 states and 3045 transitions. [2022-02-15 02:47:16,862 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 24 states have (on average 4.791666666666667) internal successors, (115), 23 states have internal predecessors, (115), 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 02:47:16,862 INFO L276 IsEmpty]: Start isEmpty. Operand 2180 states and 3045 transitions. [2022-02-15 02:47:16,864 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2022-02-15 02:47:16,865 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 02:47:16,865 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 02:47:16,865 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-02-15 02:47:16,865 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 02:47:16,866 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 02:47:16,866 INFO L85 PathProgramCache]: Analyzing trace with hash 1307088741, now seen corresponding path program 2 times [2022-02-15 02:47:16,866 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 02:47:16,866 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [230502651] [2022-02-15 02:47:16,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 02:47:16,936 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 02:47:16,970 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 3 AssignedVariables, 1 ReadonlyVariables, Eigenvalues: {0={1=1, 2=1}, 1={1=2}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:47:16,970 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2022-02-15 02:47:17,034 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 02:47:17,035 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2022-02-15 02:47:17,100 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 02:47:17,126 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 3 AssignedVariables, 1 ReadonlyVariables, Eigenvalues: {0={1=1, 2=1}, 1={1=2}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:47:17,558 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 02:47:17,559 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2022-02-15 02:47:17,559 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 02:47:17,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:47:17,610 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 02:47:17,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:47:17,613 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 02:47:18,107 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 02:47:18,107 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [230502651] [2022-02-15 02:47:18,107 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [230502651] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 02:47:18,107 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 02:47:18,108 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2022-02-15 02:47:18,108 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [497037967] [2022-02-15 02:47:18,108 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 02:47:18,108 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-02-15 02:47:18,108 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 02:47:18,108 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-02-15 02:47:18,108 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=96, Invalid=504, Unknown=0, NotChecked=0, Total=600 [2022-02-15 02:47:18,109 INFO L87 Difference]: Start difference. First operand 2180 states and 3045 transitions. Second operand has 25 states, 24 states have (on average 4.875) internal successors, (117), 23 states have internal predecessors, (117), 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 02:47:20,414 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 02:47:20,415 INFO L93 Difference]: Finished difference Result 4462 states and 6200 transitions. [2022-02-15 02:47:20,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2022-02-15 02:47:20,415 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 24 states have (on average 4.875) internal successors, (117), 23 states have internal predecessors, (117), 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 121 [2022-02-15 02:47:20,415 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 02:47:20,421 INFO L225 Difference]: With dead ends: 4462 [2022-02-15 02:47:20,421 INFO L226 Difference]: Without dead ends: 2316 [2022-02-15 02:47:20,425 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 540 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=322, Invalid=1840, Unknown=0, NotChecked=0, Total=2162 [2022-02-15 02:47:20,425 INFO L933 BasicCegarLoop]: 366 mSDtfsCounter, 1054 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 4734 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1054 SdHoareTripleChecker+Valid, 413 SdHoareTripleChecker+Invalid, 4784 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 4734 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-02-15 02:47:20,429 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1054 Valid, 413 Invalid, 4784 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 4734 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-02-15 02:47:20,437 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2316 states. [2022-02-15 02:47:20,639 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2316 to 2205. [2022-02-15 02:47:20,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2205 states, 2200 states have (on average 1.3936363636363636) internal successors, (3066), 2200 states have internal predecessors, (3066), 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 02:47:20,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2205 states to 2205 states and 3070 transitions. [2022-02-15 02:47:20,644 INFO L78 Accepts]: Start accepts. Automaton has 2205 states and 3070 transitions. Word has length 121 [2022-02-15 02:47:20,644 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 02:47:20,645 INFO L470 AbstractCegarLoop]: Abstraction has 2205 states and 3070 transitions. [2022-02-15 02:47:20,645 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 24 states have (on average 4.875) internal successors, (117), 23 states have internal predecessors, (117), 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 02:47:20,645 INFO L276 IsEmpty]: Start isEmpty. Operand 2205 states and 3070 transitions. [2022-02-15 02:47:20,648 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2022-02-15 02:47:20,648 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 02:47:20,648 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 02:47:20,648 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-02-15 02:47:20,648 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 02:47:20,648 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 02:47:20,648 INFO L85 PathProgramCache]: Analyzing trace with hash -1666339119, now seen corresponding path program 2 times [2022-02-15 02:47:20,648 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 02:47:20,648 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [39456079] [2022-02-15 02:47:20,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 02:47:20,702 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 4 AssignedVariables, 1 ReadonlyVariables, Eigenvalues: {0={1=2, 2=1}, 1={1=2}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:47:20,781 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 02:47:20,781 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2022-02-15 02:47:20,864 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 02:47:20,865 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2022-02-15 02:47:20,897 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 3 AssignedVariables, 1 ReadonlyVariables, Eigenvalues: {0={1=1, 2=1}, 1={1=2}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:47:20,975 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 02:47:21,423 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 02:47:21,424 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2022-02-15 02:47:21,424 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 02:47:21,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:47:21,512 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 02:47:21,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:47:21,515 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 02:47:22,254 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 02:47:22,254 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [39456079] [2022-02-15 02:47:22,254 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [39456079] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 02:47:22,254 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 02:47:22,254 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [31] imperfect sequences [] total 31 [2022-02-15 02:47:22,254 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1549281744] [2022-02-15 02:47:22,255 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 02:47:22,255 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2022-02-15 02:47:22,255 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 02:47:22,255 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2022-02-15 02:47:22,255 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=175, Invalid=755, Unknown=0, NotChecked=0, Total=930 [2022-02-15 02:47:22,256 INFO L87 Difference]: Start difference. First operand 2205 states and 3070 transitions. Second operand has 31 states, 31 states have (on average 3.838709677419355) internal successors, (119), 30 states have internal predecessors, (119), 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 02:47:24,571 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 02:47:24,571 INFO L93 Difference]: Finished difference Result 4463 states and 6197 transitions. [2022-02-15 02:47:24,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-02-15 02:47:24,571 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 3.838709677419355) internal successors, (119), 30 states have internal predecessors, (119), 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 123 [2022-02-15 02:47:24,571 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 02:47:24,577 INFO L225 Difference]: With dead ends: 4463 [2022-02-15 02:47:24,577 INFO L226 Difference]: Without dead ends: 2292 [2022-02-15 02:47:24,580 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 976 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=519, Invalid=2903, Unknown=0, NotChecked=0, Total=3422 [2022-02-15 02:47:24,581 INFO L933 BasicCegarLoop]: 359 mSDtfsCounter, 527 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 4842 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 527 SdHoareTripleChecker+Valid, 411 SdHoareTripleChecker+Invalid, 4877 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 4842 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-02-15 02:47:24,581 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [527 Valid, 411 Invalid, 4877 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 4842 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-02-15 02:47:24,583 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2292 states. [2022-02-15 02:47:24,767 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2292 to 2229. [2022-02-15 02:47:24,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2229 states, 2224 states have (on average 1.3898381294964028) internal successors, (3091), 2224 states have internal predecessors, (3091), 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 02:47:24,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2229 states to 2229 states and 3095 transitions. [2022-02-15 02:47:24,772 INFO L78 Accepts]: Start accepts. Automaton has 2229 states and 3095 transitions. Word has length 123 [2022-02-15 02:47:24,772 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 02:47:24,772 INFO L470 AbstractCegarLoop]: Abstraction has 2229 states and 3095 transitions. [2022-02-15 02:47:24,772 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 3.838709677419355) internal successors, (119), 30 states have internal predecessors, (119), 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 02:47:24,772 INFO L276 IsEmpty]: Start isEmpty. Operand 2229 states and 3095 transitions. [2022-02-15 02:47:24,775 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2022-02-15 02:47:24,775 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 02:47:24,775 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 02:47:24,776 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-02-15 02:47:24,776 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 02:47:24,776 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 02:47:24,776 INFO L85 PathProgramCache]: Analyzing trace with hash 1084746577, now seen corresponding path program 2 times [2022-02-15 02:47:24,776 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 02:47:24,776 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2094796960] [2022-02-15 02:47:24,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 02:47:24,901 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 7 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=5, 2=1}, 1={1=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:47:24,901 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-15 02:47:24,901 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-02-15 02:47:24,902 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2022-02-15 02:47:25,033 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 7 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=5, 2=1}, 1={1=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:47:25,034 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2022-02-15 02:47:25,062 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 3 AssignedVariables, 1 ReadonlyVariables, Eigenvalues: {0={1=1, 2=1}, 1={1=2}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:47:28,413 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 9 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=7, 2=1}, 1={1=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:47:28,414 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-15 02:47:28,414 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-02-15 02:47:28,414 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2022-02-15 02:47:28,414 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 02:47:28,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:47:28,484 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 02:47:28,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:47:28,487 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 02:47:29,547 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 02:47:29,547 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2094796960] [2022-02-15 02:47:29,547 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [2094796960] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 02:47:29,547 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 02:47:29,547 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [24] imperfect sequences [] total 24 [2022-02-15 02:47:29,547 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [319052212] [2022-02-15 02:47:29,548 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 02:47:29,548 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-02-15 02:47:29,548 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 02:47:29,548 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-02-15 02:47:29,548 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=116, Invalid=534, Unknown=0, NotChecked=0, Total=650 [2022-02-15 02:47:29,548 INFO L87 Difference]: Start difference. First operand 2229 states and 3095 transitions. Second operand has 24 states, 23 states have (on average 5.173913043478261) internal successors, (119), 22 states have internal predecessors, (119), 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 02:47:31,901 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 02:47:31,901 INFO L93 Difference]: Finished difference Result 6519 states and 9090 transitions. [2022-02-15 02:47:31,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-02-15 02:47:31,902 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 23 states have (on average 5.173913043478261) internal successors, (119), 22 states have internal predecessors, (119), 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 123 [2022-02-15 02:47:31,902 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 02:47:31,909 INFO L225 Difference]: With dead ends: 6519 [2022-02-15 02:47:31,909 INFO L226 Difference]: Without dead ends: 2790 [2022-02-15 02:47:31,916 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 27 SyntacticMatches, 35 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1153 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=396, Invalid=2054, Unknown=0, NotChecked=0, Total=2450 [2022-02-15 02:47:31,916 INFO L933 BasicCegarLoop]: 235 mSDtfsCounter, 1123 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 3335 mSolverCounterSat, 74 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1123 SdHoareTripleChecker+Valid, 277 SdHoareTripleChecker+Invalid, 3409 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 74 IncrementalHoareTripleChecker+Valid, 3335 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-02-15 02:47:31,916 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1123 Valid, 277 Invalid, 3409 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [74 Valid, 3335 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-02-15 02:47:31,919 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2790 states. [2022-02-15 02:47:32,201 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2790 to 2576. [2022-02-15 02:47:32,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2576 states, 2571 states have (on average 1.3889537145079736) internal successors, (3571), 2571 states have internal predecessors, (3571), 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 02:47:32,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2576 states to 2576 states and 3575 transitions. [2022-02-15 02:47:32,207 INFO L78 Accepts]: Start accepts. Automaton has 2576 states and 3575 transitions. Word has length 123 [2022-02-15 02:47:32,207 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 02:47:32,207 INFO L470 AbstractCegarLoop]: Abstraction has 2576 states and 3575 transitions. [2022-02-15 02:47:32,207 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 23 states have (on average 5.173913043478261) internal successors, (119), 22 states have internal predecessors, (119), 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 02:47:32,208 INFO L276 IsEmpty]: Start isEmpty. Operand 2576 states and 3575 transitions. [2022-02-15 02:47:32,225 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2022-02-15 02:47:32,226 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 02:47:32,226 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 02:47:32,226 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-02-15 02:47:32,226 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 02:47:32,226 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 02:47:32,226 INFO L85 PathProgramCache]: Analyzing trace with hash -1813658655, now seen corresponding path program 1 times [2022-02-15 02:47:32,226 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 02:47:32,226 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [478652661] [2022-02-15 02:47:32,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 02:47:32,304 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 02:47:32,725 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 02:47:32,725 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2022-02-15 02:47:32,787 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 02:47:32,788 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2022-02-15 02:47:33,204 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 02:47:33,263 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 02:47:33,684 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 02:47:33,684 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2022-02-15 02:47:33,684 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 02:47:33,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:47:33,743 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 02:47:33,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:47:33,746 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 02:47:34,322 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 02:47:34,322 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [478652661] [2022-02-15 02:47:34,322 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [478652661] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 02:47:34,329 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 02:47:34,329 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [29] imperfect sequences [] total 29 [2022-02-15 02:47:34,329 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1706877563] [2022-02-15 02:47:34,329 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 02:47:34,330 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2022-02-15 02:47:34,330 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 02:47:34,330 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2022-02-15 02:47:34,330 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=111, Invalid=701, Unknown=0, NotChecked=0, Total=812 [2022-02-15 02:47:34,330 INFO L87 Difference]: Start difference. First operand 2576 states and 3575 transitions. Second operand has 29 states, 28 states have (on average 4.607142857142857) internal successors, (129), 27 states have internal predecessors, (129), 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 02:47:36,373 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 02:47:36,373 INFO L93 Difference]: Finished difference Result 5786 states and 8086 transitions. [2022-02-15 02:47:36,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-02-15 02:47:36,374 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 28 states have (on average 4.607142857142857) internal successors, (129), 27 states have internal predecessors, (129), 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 133 [2022-02-15 02:47:36,374 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 02:47:36,382 INFO L225 Difference]: With dead ends: 5786 [2022-02-15 02:47:36,382 INFO L226 Difference]: Without dead ends: 3247 [2022-02-15 02:47:36,386 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 71 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 794 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=375, Invalid=2595, Unknown=0, NotChecked=0, Total=2970 [2022-02-15 02:47:36,386 INFO L933 BasicCegarLoop]: 199 mSDtfsCounter, 944 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 5011 mSolverCounterSat, 114 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 944 SdHoareTripleChecker+Valid, 236 SdHoareTripleChecker+Invalid, 5125 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 114 IncrementalHoareTripleChecker+Valid, 5011 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-02-15 02:47:36,386 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [944 Valid, 236 Invalid, 5125 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [114 Valid, 5011 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-02-15 02:47:36,388 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3247 states. [2022-02-15 02:47:36,644 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3247 to 2809. [2022-02-15 02:47:36,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2809 states, 2804 states have (on average 1.4283166904422253) internal successors, (4005), 2804 states have internal predecessors, (4005), 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 02:47:36,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2809 states to 2809 states and 4009 transitions. [2022-02-15 02:47:36,650 INFO L78 Accepts]: Start accepts. Automaton has 2809 states and 4009 transitions. Word has length 133 [2022-02-15 02:47:36,650 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 02:47:36,650 INFO L470 AbstractCegarLoop]: Abstraction has 2809 states and 4009 transitions. [2022-02-15 02:47:36,650 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 28 states have (on average 4.607142857142857) internal successors, (129), 27 states have internal predecessors, (129), 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 02:47:36,650 INFO L276 IsEmpty]: Start isEmpty. Operand 2809 states and 4009 transitions. [2022-02-15 02:47:36,652 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2022-02-15 02:47:36,652 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 02:47:36,652 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 02:47:36,652 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-02-15 02:47:36,653 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 02:47:36,653 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 02:47:36,653 INFO L85 PathProgramCache]: Analyzing trace with hash 1208424781, now seen corresponding path program 1 times [2022-02-15 02:47:36,653 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 02:47:36,653 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [558847625] [2022-02-15 02:47:36,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 02:47:37,089 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 7 AssignedVariables, 1 ReadonlyVariables, Eigenvalues: {0={1=5, 2=1}, 1={1=2}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:47:37,213 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 02:47:37,213 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2022-02-15 02:47:37,325 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 02:47:37,325 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2022-02-15 02:47:37,738 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 02:47:37,814 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 02:47:38,282 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 02:47:38,282 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2022-02-15 02:47:38,282 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 02:47:38,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:47:38,362 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 02:47:38,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:47:38,364 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 02:47:39,293 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 02:47:39,293 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [558847625] [2022-02-15 02:47:39,293 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [558847625] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 02:47:39,293 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 02:47:39,293 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [32] imperfect sequences [] total 32 [2022-02-15 02:47:39,293 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [381586931] [2022-02-15 02:47:39,293 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 02:47:39,294 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-02-15 02:47:39,294 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 02:47:39,294 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-02-15 02:47:39,294 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=126, Invalid=930, Unknown=0, NotChecked=0, Total=1056 [2022-02-15 02:47:39,294 INFO L87 Difference]: Start difference. First operand 2809 states and 4009 transitions. Second operand has 32 states, 31 states have (on average 4.225806451612903) internal successors, (131), 30 states have internal predecessors, (131), 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 02:47:42,992 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 02:47:42,992 INFO L93 Difference]: Finished difference Result 5703 states and 8121 transitions. [2022-02-15 02:47:42,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-02-15 02:47:42,993 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 31 states have (on average 4.225806451612903) internal successors, (131), 30 states have internal predecessors, (131), 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 135 [2022-02-15 02:47:42,998 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 02:47:43,005 INFO L225 Difference]: With dead ends: 5703 [2022-02-15 02:47:43,005 INFO L226 Difference]: Without dead ends: 2953 [2022-02-15 02:47:43,011 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 127 GetRequests, 67 SyntacticMatches, 0 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1023 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=412, Invalid=3370, Unknown=0, NotChecked=0, Total=3782 [2022-02-15 02:47:43,011 INFO L933 BasicCegarLoop]: 358 mSDtfsCounter, 859 mSDsluCounter, 102 mSDsCounter, 0 mSdLazyCounter, 8290 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 859 SdHoareTripleChecker+Valid, 460 SdHoareTripleChecker+Invalid, 8326 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 8290 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2022-02-15 02:47:43,011 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [859 Valid, 460 Invalid, 8326 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 8290 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2022-02-15 02:47:43,014 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2953 states. [2022-02-15 02:47:43,311 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2953 to 2851. [2022-02-15 02:47:43,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2851 states, 2846 states have (on average 1.4219957835558679) internal successors, (4047), 2846 states have internal predecessors, (4047), 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 02:47:43,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2851 states to 2851 states and 4051 transitions. [2022-02-15 02:47:43,317 INFO L78 Accepts]: Start accepts. Automaton has 2851 states and 4051 transitions. Word has length 135 [2022-02-15 02:47:43,317 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 02:47:43,317 INFO L470 AbstractCegarLoop]: Abstraction has 2851 states and 4051 transitions. [2022-02-15 02:47:43,318 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 31 states have (on average 4.225806451612903) internal successors, (131), 30 states have internal predecessors, (131), 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 02:47:43,318 INFO L276 IsEmpty]: Start isEmpty. Operand 2851 states and 4051 transitions. [2022-02-15 02:47:43,320 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2022-02-15 02:47:43,320 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 02:47:43,320 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 02:47:43,320 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-02-15 02:47:43,320 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 02:47:43,320 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 02:47:43,320 INFO L85 PathProgramCache]: Analyzing trace with hash -1140156979, now seen corresponding path program 1 times [2022-02-15 02:47:43,321 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 02:47:43,321 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1138253225] [2022-02-15 02:47:43,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 02:47:43,326 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-15 02:47:43,326 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-02-15 02:47:43,326 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 02:47:43,327 INFO L274 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-15 02:47:43,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:47:43,349 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 02:47:43,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:47:43,352 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 02:47:43,352 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 02:47:43,352 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1138253225] [2022-02-15 02:47:43,352 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1138253225] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 02:47:43,352 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 02:47:43,352 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-02-15 02:47:43,352 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [123043822] [2022-02-15 02:47:43,352 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 02:47:43,353 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-02-15 02:47:43,353 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 02:47:43,353 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-02-15 02:47:43,353 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-02-15 02:47:43,353 INFO L87 Difference]: Start difference. First operand 2851 states and 4051 transitions. Second operand has 4 states, 4 states have (on average 28.25) internal successors, (113), 3 states have internal predecessors, (113), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 02:47:44,003 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 02:47:44,003 INFO L93 Difference]: Finished difference Result 7731 states and 11050 transitions. [2022-02-15 02:47:44,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-02-15 02:47:44,003 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 28.25) internal successors, (113), 3 states have internal predecessors, (113), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 135 [2022-02-15 02:47:44,003 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 02:47:44,012 INFO L225 Difference]: With dead ends: 7731 [2022-02-15 02:47:44,012 INFO L226 Difference]: Without dead ends: 4981 [2022-02-15 02:47:44,015 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 02:47:44,015 INFO L933 BasicCegarLoop]: 266 mSDtfsCounter, 438 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 189 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 438 SdHoareTripleChecker+Valid, 273 SdHoareTripleChecker+Invalid, 191 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 189 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-15 02:47:44,016 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [438 Valid, 273 Invalid, 191 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 189 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-15 02:47:44,018 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4981 states. [2022-02-15 02:47:44,457 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4981 to 4873. [2022-02-15 02:47:44,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4873 states, 4868 states have (on average 1.4174198849630237) internal successors, (6900), 4868 states have internal predecessors, (6900), 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 02:47:44,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4873 states to 4873 states and 6904 transitions. [2022-02-15 02:47:44,466 INFO L78 Accepts]: Start accepts. Automaton has 4873 states and 6904 transitions. Word has length 135 [2022-02-15 02:47:44,466 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 02:47:44,466 INFO L470 AbstractCegarLoop]: Abstraction has 4873 states and 6904 transitions. [2022-02-15 02:47:44,467 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 28.25) internal successors, (113), 3 states have internal predecessors, (113), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 02:47:44,467 INFO L276 IsEmpty]: Start isEmpty. Operand 4873 states and 6904 transitions. [2022-02-15 02:47:44,468 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2022-02-15 02:47:44,468 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 02:47:44,468 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 02:47:44,469 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-02-15 02:47:44,469 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 02:47:44,469 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 02:47:44,469 INFO L85 PathProgramCache]: Analyzing trace with hash -1415658615, now seen corresponding path program 1 times [2022-02-15 02:47:44,469 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 02:47:44,469 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [36690233] [2022-02-15 02:47:44,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 02:47:44,555 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 02:47:44,977 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 02:47:44,977 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2022-02-15 02:47:45,042 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 02:47:45,507 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 02:47:45,931 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 02:47:45,931 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2022-02-15 02:47:45,931 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 02:47:45,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:47:45,995 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 02:47:45,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:47:45,999 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 02:47:46,625 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 02:47:46,625 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [36690233] [2022-02-15 02:47:46,626 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [36690233] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 02:47:46,626 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 02:47:46,626 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [29] imperfect sequences [] total 29 [2022-02-15 02:47:46,626 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1572812046] [2022-02-15 02:47:46,626 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 02:47:46,626 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2022-02-15 02:47:46,626 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 02:47:46,626 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2022-02-15 02:47:46,627 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=106, Invalid=706, Unknown=0, NotChecked=0, Total=812 [2022-02-15 02:47:46,627 INFO L87 Difference]: Start difference. First operand 4873 states and 6904 transitions. Second operand has 29 states, 28 states have (on average 4.714285714285714) internal successors, (132), 27 states have internal predecessors, (132), 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 02:47:48,936 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 02:47:48,937 INFO L93 Difference]: Finished difference Result 7918 states and 11099 transitions. [2022-02-15 02:47:48,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-02-15 02:47:48,937 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 28 states have (on average 4.714285714285714) internal successors, (132), 27 states have internal predecessors, (132), 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 136 [2022-02-15 02:47:48,937 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 02:47:48,946 INFO L225 Difference]: With dead ends: 7918 [2022-02-15 02:47:48,946 INFO L226 Difference]: Without dead ends: 5287 [2022-02-15 02:47:48,951 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 74 SyntacticMatches, 1 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 815 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=360, Invalid=2610, Unknown=0, NotChecked=0, Total=2970 [2022-02-15 02:47:48,954 INFO L933 BasicCegarLoop]: 213 mSDtfsCounter, 797 mSDsluCounter, 77 mSDsCounter, 0 mSdLazyCounter, 4501 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 797 SdHoareTripleChecker+Valid, 290 SdHoareTripleChecker+Invalid, 4557 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 4501 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-02-15 02:47:48,954 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [797 Valid, 290 Invalid, 4557 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 4501 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-02-15 02:47:48,957 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5287 states. [2022-02-15 02:47:49,410 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5287 to 4825. [2022-02-15 02:47:49,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4825 states, 4820 states have (on average 1.4211618257261411) internal successors, (6850), 4820 states have internal predecessors, (6850), 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 02:47:49,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4825 states to 4825 states and 6854 transitions. [2022-02-15 02:47:49,419 INFO L78 Accepts]: Start accepts. Automaton has 4825 states and 6854 transitions. Word has length 136 [2022-02-15 02:47:49,420 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 02:47:49,420 INFO L470 AbstractCegarLoop]: Abstraction has 4825 states and 6854 transitions. [2022-02-15 02:47:49,420 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 28 states have (on average 4.714285714285714) internal successors, (132), 27 states have internal predecessors, (132), 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 02:47:49,420 INFO L276 IsEmpty]: Start isEmpty. Operand 4825 states and 6854 transitions. [2022-02-15 02:47:49,421 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2022-02-15 02:47:49,422 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 02:47:49,422 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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 02:47:49,422 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-02-15 02:47:49,422 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 02:47:49,422 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 02:47:49,422 INFO L85 PathProgramCache]: Analyzing trace with hash -2084896176, now seen corresponding path program 1 times [2022-02-15 02:47:49,422 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 02:47:49,422 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [904622972] [2022-02-15 02:47:49,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 02:47:49,563 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 7 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=5, 2=1}, 1={1=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:47:53,015 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 8 AssignedVariables, 1 ReadonlyVariables, Eigenvalues: {0={1=8}, 1={1=2}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:47:53,016 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2022-02-15 02:47:53,124 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 7 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=5, 2=1}, 1={1=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:47:53,124 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2022-02-15 02:47:53,557 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 02:47:53,557 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-15 02:47:53,557 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-02-15 02:47:53,558 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-15 02:47:53,558 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-02-15 02:47:53,558 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2022-02-15 02:47:53,558 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 02:47:53,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:47:53,667 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 02:47:53,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:47:53,670 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 02:47:55,038 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 02:47:55,038 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [904622972] [2022-02-15 02:47:55,039 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [904622972] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 02:47:55,039 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 02:47:55,039 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [31] imperfect sequences [] total 31 [2022-02-15 02:47:55,039 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [466929496] [2022-02-15 02:47:55,039 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 02:47:55,039 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2022-02-15 02:47:55,039 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 02:47:55,039 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2022-02-15 02:47:55,040 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=168, Invalid=888, Unknown=0, NotChecked=0, Total=1056 [2022-02-15 02:47:55,040 INFO L87 Difference]: Start difference. First operand 4825 states and 6854 transitions. Second operand has 31 states, 30 states have (on average 4.4) internal successors, (132), 29 states have internal predecessors, (132), 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 02:47:58,225 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 02:47:58,225 INFO L93 Difference]: Finished difference Result 11555 states and 16459 transitions. [2022-02-15 02:47:58,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-02-15 02:47:58,226 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 30 states have (on average 4.4) internal successors, (132), 29 states have internal predecessors, (132), 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 136 [2022-02-15 02:47:58,226 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 02:47:58,234 INFO L225 Difference]: With dead ends: 11555 [2022-02-15 02:47:58,234 INFO L226 Difference]: Without dead ends: 4985 [2022-02-15 02:47:58,243 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 127 GetRequests, 25 SyntacticMatches, 43 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1734 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=507, Invalid=3153, Unknown=0, NotChecked=0, Total=3660 [2022-02-15 02:47:58,243 INFO L933 BasicCegarLoop]: 207 mSDtfsCounter, 1250 mSDsluCounter, 72 mSDsCounter, 0 mSdLazyCounter, 4516 mSolverCounterSat, 102 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1250 SdHoareTripleChecker+Valid, 279 SdHoareTripleChecker+Invalid, 4618 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 102 IncrementalHoareTripleChecker+Valid, 4516 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-02-15 02:47:58,244 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1250 Valid, 279 Invalid, 4618 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [102 Valid, 4516 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2022-02-15 02:47:58,246 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4985 states. [2022-02-15 02:47:58,757 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4985 to 4922. [2022-02-15 02:47:58,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4922 states, 4917 states have (on average 1.4140736221273134) internal successors, (6953), 4917 states have internal predecessors, (6953), 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 02:47:58,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4922 states to 4922 states and 6957 transitions. [2022-02-15 02:47:58,766 INFO L78 Accepts]: Start accepts. Automaton has 4922 states and 6957 transitions. Word has length 136 [2022-02-15 02:47:58,766 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 02:47:58,766 INFO L470 AbstractCegarLoop]: Abstraction has 4922 states and 6957 transitions. [2022-02-15 02:47:58,766 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 30 states have (on average 4.4) internal successors, (132), 29 states have internal predecessors, (132), 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 02:47:58,767 INFO L276 IsEmpty]: Start isEmpty. Operand 4922 states and 6957 transitions. [2022-02-15 02:47:58,768 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2022-02-15 02:47:58,768 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 02:47:58,768 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-02-15 02:47:58,768 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-02-15 02:47:58,769 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 02:47:58,769 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 02:47:58,769 INFO L85 PathProgramCache]: Analyzing trace with hash 2081640636, now seen corresponding path program 1 times [2022-02-15 02:47:58,769 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 02:47:58,769 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1639009361] [2022-02-15 02:47:58,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 02:47:58,937 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 02:47:59,401 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 7 AssignedVariables, 1 ReadonlyVariables, Eigenvalues: {0={1=5, 2=1}, 1={1=2}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:47:59,401 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2022-02-15 02:47:59,569 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 02:47:59,569 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2022-02-15 02:48:00,016 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 02:48:00,098 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 02:48:00,099 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-15 02:48:00,099 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-02-15 02:48:00,099 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2022-02-15 02:48:00,099 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 02:48:00,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:48:00,156 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 02:48:00,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:48:00,158 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 02:48:00,831 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 02:48:00,831 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1639009361] [2022-02-15 02:48:00,831 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1639009361] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 02:48:00,832 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 02:48:00,832 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2022-02-15 02:48:00,832 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1151881003] [2022-02-15 02:48:00,832 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 02:48:00,832 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-02-15 02:48:00,832 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 02:48:00,832 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-02-15 02:48:00,833 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=148, Invalid=608, Unknown=0, NotChecked=0, Total=756 [2022-02-15 02:48:00,833 INFO L87 Difference]: Start difference. First operand 4922 states and 6957 transitions. Second operand has 26 states, 25 states have (on average 5.28) internal successors, (132), 24 states have internal predecessors, (132), 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 02:48:02,604 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 02:48:02,604 INFO L93 Difference]: Finished difference Result 7542 states and 10678 transitions. [2022-02-15 02:48:02,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-02-15 02:48:02,605 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 25 states have (on average 5.28) internal successors, (132), 24 states have internal predecessors, (132), 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 137 [2022-02-15 02:48:02,605 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 02:48:02,613 INFO L225 Difference]: With dead ends: 7542 [2022-02-15 02:48:02,613 INFO L226 Difference]: Without dead ends: 5002 [2022-02-15 02:48:02,618 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 62 SyntacticMatches, 12 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 863 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=440, Invalid=2110, Unknown=0, NotChecked=0, Total=2550 [2022-02-15 02:48:02,618 INFO L933 BasicCegarLoop]: 171 mSDtfsCounter, 772 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 2182 mSolverCounterSat, 100 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 772 SdHoareTripleChecker+Valid, 218 SdHoareTripleChecker+Invalid, 2282 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 100 IncrementalHoareTripleChecker+Valid, 2182 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-02-15 02:48:02,618 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [772 Valid, 218 Invalid, 2282 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [100 Valid, 2182 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-02-15 02:48:02,621 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5002 states. [2022-02-15 02:48:03,199 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5002 to 4946. [2022-02-15 02:48:03,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4946 states, 4941 states have (on average 1.4122647237401336) internal successors, (6978), 4941 states have internal predecessors, (6978), 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 02:48:03,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4946 states to 4946 states and 6982 transitions. [2022-02-15 02:48:03,209 INFO L78 Accepts]: Start accepts. Automaton has 4946 states and 6982 transitions. Word has length 137 [2022-02-15 02:48:03,209 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 02:48:03,209 INFO L470 AbstractCegarLoop]: Abstraction has 4946 states and 6982 transitions. [2022-02-15 02:48:03,209 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 25 states have (on average 5.28) internal successors, (132), 24 states have internal predecessors, (132), 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 02:48:03,210 INFO L276 IsEmpty]: Start isEmpty. Operand 4946 states and 6982 transitions. [2022-02-15 02:48:03,211 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2022-02-15 02:48:03,211 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 02:48:03,211 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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 02:48:03,211 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-02-15 02:48:03,212 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 02:48:03,212 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 02:48:03,212 INFO L85 PathProgramCache]: Analyzing trace with hash -1660545484, now seen corresponding path program 1 times [2022-02-15 02:48:03,212 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 02:48:03,212 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1751224269] [2022-02-15 02:48:03,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 02:48:03,350 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 02:48:06,744 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 8 AssignedVariables, 1 ReadonlyVariables, Eigenvalues: {0={1=6, 2=1}, 1={1=2}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:48:06,745 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2022-02-15 02:48:06,865 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 02:48:06,866 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2022-02-15 02:48:07,017 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 02:48:07,440 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 02:48:10,807 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 02:48:10,808 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2022-02-15 02:48:10,808 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 02:48:10,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:48:10,850 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 02:48:10,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:48:10,853 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 02:48:12,369 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 02:48:12,369 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1751224269] [2022-02-15 02:48:12,369 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1751224269] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 02:48:12,370 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 02:48:12,370 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [33] imperfect sequences [] total 33 [2022-02-15 02:48:12,370 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1579770187] [2022-02-15 02:48:12,370 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 02:48:12,370 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-02-15 02:48:12,370 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 02:48:12,370 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-02-15 02:48:12,371 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=125, Invalid=931, Unknown=0, NotChecked=0, Total=1056 [2022-02-15 02:48:12,371 INFO L87 Difference]: Start difference. First operand 4946 states and 6982 transitions. Second operand has 33 states, 32 states have (on average 4.1875) internal successors, (134), 31 states have internal predecessors, (134), 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 02:48:15,200 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 02:48:15,200 INFO L93 Difference]: Finished difference Result 8026 states and 11225 transitions. [2022-02-15 02:48:15,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2022-02-15 02:48:15,201 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 32 states have (on average 4.1875) internal successors, (134), 31 states have internal predecessors, (134), 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 138 [2022-02-15 02:48:15,201 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 02:48:15,209 INFO L225 Difference]: With dead ends: 8026 [2022-02-15 02:48:15,209 INFO L226 Difference]: Without dead ends: 5486 [2022-02-15 02:48:15,213 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 133 GetRequests, 29 SyntacticMatches, 43 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1852 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=425, Invalid=3481, Unknown=0, NotChecked=0, Total=3906 [2022-02-15 02:48:15,213 INFO L933 BasicCegarLoop]: 240 mSDtfsCounter, 735 mSDsluCounter, 92 mSDsCounter, 0 mSdLazyCounter, 5821 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 735 SdHoareTripleChecker+Valid, 332 SdHoareTripleChecker+Invalid, 5870 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 5821 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-02-15 02:48:15,214 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [735 Valid, 332 Invalid, 5870 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 5821 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-02-15 02:48:15,216 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5486 states. [2022-02-15 02:48:15,764 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5486 to 4950. [2022-02-15 02:48:15,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4950 states, 4945 states have (on average 1.412133468149646) internal successors, (6983), 4945 states have internal predecessors, (6983), 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 02:48:15,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4950 states to 4950 states and 6987 transitions. [2022-02-15 02:48:15,773 INFO L78 Accepts]: Start accepts. Automaton has 4950 states and 6987 transitions. Word has length 138 [2022-02-15 02:48:15,774 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 02:48:15,774 INFO L470 AbstractCegarLoop]: Abstraction has 4950 states and 6987 transitions. [2022-02-15 02:48:15,774 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 32 states have (on average 4.1875) internal successors, (134), 31 states have internal predecessors, (134), 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 02:48:15,774 INFO L276 IsEmpty]: Start isEmpty. Operand 4950 states and 6987 transitions. [2022-02-15 02:48:15,776 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2022-02-15 02:48:15,776 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 02:48:15,776 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 02:48:15,776 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-02-15 02:48:15,776 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 02:48:15,776 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 02:48:15,776 INFO L85 PathProgramCache]: Analyzing trace with hash 328327195, now seen corresponding path program 1 times [2022-02-15 02:48:15,776 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 02:48:15,776 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1390837142] [2022-02-15 02:48:15,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 02:48:16,209 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 7 AssignedVariables, 1 ReadonlyVariables, Eigenvalues: {0={1=5, 2=1}, 1={1=2}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:48:16,278 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 02:48:16,278 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2022-02-15 02:48:16,745 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 7 AssignedVariables, 1 ReadonlyVariables, Eigenvalues: {0={1=5, 2=1}, 1={1=2}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:48:16,816 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 02:48:17,249 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 02:48:17,250 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2022-02-15 02:48:17,250 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 02:48:17,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:48:17,300 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 02:48:17,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:48:17,304 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 02:48:18,114 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 02:48:18,114 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1390837142] [2022-02-15 02:48:18,114 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1390837142] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 02:48:18,114 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 02:48:18,114 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [32] imperfect sequences [] total 32 [2022-02-15 02:48:18,114 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [228821412] [2022-02-15 02:48:18,114 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 02:48:18,114 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-02-15 02:48:18,114 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 02:48:18,115 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-02-15 02:48:18,115 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=123, Invalid=869, Unknown=0, NotChecked=0, Total=992 [2022-02-15 02:48:18,116 INFO L87 Difference]: Start difference. First operand 4950 states and 6987 transitions. Second operand has 32 states, 31 states have (on average 4.354838709677419) internal successors, (135), 30 states have internal predecessors, (135), 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 02:48:21,659 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 02:48:21,659 INFO L93 Difference]: Finished difference Result 8120 states and 11311 transitions. [2022-02-15 02:48:21,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-02-15 02:48:21,660 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 31 states have (on average 4.354838709677419) internal successors, (135), 30 states have internal predecessors, (135), 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 139 [2022-02-15 02:48:21,660 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 02:48:21,667 INFO L225 Difference]: With dead ends: 8120 [2022-02-15 02:48:21,667 INFO L226 Difference]: Without dead ends: 5405 [2022-02-15 02:48:21,671 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 74 SyntacticMatches, 1 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 985 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=417, Invalid=3243, Unknown=0, NotChecked=0, Total=3660 [2022-02-15 02:48:21,671 INFO L933 BasicCegarLoop]: 188 mSDtfsCounter, 968 mSDsluCounter, 67 mSDsCounter, 0 mSdLazyCounter, 6324 mSolverCounterSat, 120 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 968 SdHoareTripleChecker+Valid, 255 SdHoareTripleChecker+Invalid, 6444 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 120 IncrementalHoareTripleChecker+Valid, 6324 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-02-15 02:48:21,671 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [968 Valid, 255 Invalid, 6444 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [120 Valid, 6324 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2022-02-15 02:48:21,680 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5405 states. [2022-02-15 02:48:22,188 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5405 to 4898. [2022-02-15 02:48:22,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4898 states, 4893 states have (on average 1.4156958920907419) internal successors, (6927), 4893 states have internal predecessors, (6927), 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 02:48:22,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4898 states to 4898 states and 6931 transitions. [2022-02-15 02:48:22,197 INFO L78 Accepts]: Start accepts. Automaton has 4898 states and 6931 transitions. Word has length 139 [2022-02-15 02:48:22,197 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 02:48:22,198 INFO L470 AbstractCegarLoop]: Abstraction has 4898 states and 6931 transitions. [2022-02-15 02:48:22,198 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 31 states have (on average 4.354838709677419) internal successors, (135), 30 states have internal predecessors, (135), 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 02:48:22,198 INFO L276 IsEmpty]: Start isEmpty. Operand 4898 states and 6931 transitions. [2022-02-15 02:48:22,199 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2022-02-15 02:48:22,200 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 02:48:22,200 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 02:48:22,200 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-02-15 02:48:22,200 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 02:48:22,200 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 02:48:22,200 INFO L85 PathProgramCache]: Analyzing trace with hash 1953685023, now seen corresponding path program 1 times [2022-02-15 02:48:22,200 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 02:48:22,200 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1612390013] [2022-02-15 02:48:22,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 02:48:22,216 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-15 02:48:22,216 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-02-15 02:48:22,216 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 02:48:22,217 INFO L274 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-15 02:48:22,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:48:22,239 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 02:48:22,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:48:22,241 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 02:48:22,241 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 02:48:22,241 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1612390013] [2022-02-15 02:48:22,241 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1612390013] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 02:48:22,241 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 02:48:22,241 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-02-15 02:48:22,241 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [602104519] [2022-02-15 02:48:22,241 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 02:48:22,243 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-02-15 02:48:22,243 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 02:48:22,243 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-02-15 02:48:22,243 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-02-15 02:48:22,244 INFO L87 Difference]: Start difference. First operand 4898 states and 6931 transitions. Second operand has 4 states, 4 states have (on average 26.5) internal successors, (106), 3 states have internal predecessors, (106), 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 02:48:23,282 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 02:48:23,282 INFO L93 Difference]: Finished difference Result 13418 states and 19186 transitions. [2022-02-15 02:48:23,282 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-02-15 02:48:23,283 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 26.5) internal successors, (106), 3 states have internal predecessors, (106), 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 139 [2022-02-15 02:48:23,283 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 02:48:23,290 INFO L225 Difference]: With dead ends: 13418 [2022-02-15 02:48:23,290 INFO L226 Difference]: Without dead ends: 5594 [2022-02-15 02:48:23,301 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 02:48:23,303 INFO L933 BasicCegarLoop]: 371 mSDtfsCounter, 332 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 202 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 332 SdHoareTripleChecker+Valid, 378 SdHoareTripleChecker+Invalid, 209 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 202 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-15 02:48:23,307 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [332 Valid, 378 Invalid, 209 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 202 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-15 02:48:23,312 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5594 states. [2022-02-15 02:48:23,866 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5594 to 5570. [2022-02-15 02:48:23,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5570 states, 5565 states have (on average 1.4147349505840072) internal successors, (7873), 5565 states have internal predecessors, (7873), 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 02:48:23,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5570 states to 5570 states and 7877 transitions. [2022-02-15 02:48:23,877 INFO L78 Accepts]: Start accepts. Automaton has 5570 states and 7877 transitions. Word has length 139 [2022-02-15 02:48:23,877 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 02:48:23,877 INFO L470 AbstractCegarLoop]: Abstraction has 5570 states and 7877 transitions. [2022-02-15 02:48:23,877 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 26.5) internal successors, (106), 3 states have internal predecessors, (106), 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 02:48:23,878 INFO L276 IsEmpty]: Start isEmpty. Operand 5570 states and 7877 transitions. [2022-02-15 02:48:23,880 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2022-02-15 02:48:23,880 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 02:48:23,880 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2022-02-15 02:48:23,881 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2022-02-15 02:48:23,881 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 02:48:23,881 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 02:48:23,881 INFO L85 PathProgramCache]: Analyzing trace with hash 347306024, now seen corresponding path program 1 times [2022-02-15 02:48:23,881 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 02:48:23,881 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [880939805] [2022-02-15 02:48:23,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 02:48:23,889 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-15 02:48:23,889 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-02-15 02:48:23,889 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 02:48:23,890 INFO L274 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-15 02:48:23,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:48:23,951 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 02:48:23,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:48:23,953 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 02:48:23,953 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 02:48:23,953 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [880939805] [2022-02-15 02:48:23,953 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [880939805] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 02:48:23,953 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 02:48:23,953 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-02-15 02:48:23,953 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [643491670] [2022-02-15 02:48:23,954 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 02:48:23,954 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-02-15 02:48:23,954 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 02:48:23,954 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-02-15 02:48:23,954 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-02-15 02:48:23,954 INFO L87 Difference]: Start difference. First operand 5570 states and 7877 transitions. Second operand has 4 states, 4 states have (on average 35.75) internal successors, (143), 3 states have internal predecessors, (143), 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 02:48:24,589 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 02:48:24,589 INFO L93 Difference]: Finished difference Result 8627 states and 12211 transitions. [2022-02-15 02:48:24,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-02-15 02:48:24,589 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 35.75) internal successors, (143), 3 states have internal predecessors, (143), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 181 [2022-02-15 02:48:24,590 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 02:48:24,596 INFO L225 Difference]: With dead ends: 8627 [2022-02-15 02:48:24,596 INFO L226 Difference]: Without dead ends: 5682 [2022-02-15 02:48:24,599 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 02:48:24,599 INFO L933 BasicCegarLoop]: 203 mSDtfsCounter, 345 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 345 SdHoareTripleChecker+Valid, 210 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-02-15 02:48:24,599 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [345 Valid, 210 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-15 02:48:24,601 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5682 states. [2022-02-15 02:48:25,125 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5682 to 5512. [2022-02-15 02:48:25,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5512 states, 5507 states have (on average 1.4071182131832214) internal successors, (7749), 5507 states have internal predecessors, (7749), 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 02:48:25,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5512 states to 5512 states and 7753 transitions. [2022-02-15 02:48:25,181 INFO L78 Accepts]: Start accepts. Automaton has 5512 states and 7753 transitions. Word has length 181 [2022-02-15 02:48:25,182 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 02:48:25,182 INFO L470 AbstractCegarLoop]: Abstraction has 5512 states and 7753 transitions. [2022-02-15 02:48:25,182 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 35.75) internal successors, (143), 3 states have internal predecessors, (143), 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 02:48:25,182 INFO L276 IsEmpty]: Start isEmpty. Operand 5512 states and 7753 transitions. [2022-02-15 02:48:25,185 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2022-02-15 02:48:25,185 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 02:48:25,185 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 02:48:25,185 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2022-02-15 02:48:25,185 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 02:48:25,185 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 02:48:25,185 INFO L85 PathProgramCache]: Analyzing trace with hash 1964636661, now seen corresponding path program 1 times [2022-02-15 02:48:25,185 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 02:48:25,185 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1170821179] [2022-02-15 02:48:25,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 02:48:25,314 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 7 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=5, 2=1}, 1={1=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:48:28,681 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 8 AssignedVariables, 1 ReadonlyVariables, Eigenvalues: {0={1=8}, 1={1=2}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:48:32,039 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 8 AssignedVariables, 1 ReadonlyVariables, Eigenvalues: {0={1=6, 2=1}, 1={1=2}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:48:32,039 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2022-02-15 02:48:32,039 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-15 02:48:32,039 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-02-15 02:48:35,481 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 9 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=7, 2=1}, 1={1=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:48:35,990 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 02:48:36,102 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 7 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=5, 2=1}, 1={1=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:48:36,103 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2022-02-15 02:48:36,225 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 7 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=7}, 1={1=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:48:36,226 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-15 02:48:36,226 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-02-15 02:48:36,226 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2022-02-15 02:48:36,226 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 02:48:36,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:48:36,295 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 02:48:36,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:48:36,297 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 02:48:38,309 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 02:48:38,309 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1170821179] [2022-02-15 02:48:38,309 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1170821179] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 02:48:38,309 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 02:48:38,309 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [34] imperfect sequences [] total 34 [2022-02-15 02:48:38,309 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [777023213] [2022-02-15 02:48:38,309 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 02:48:38,310 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-02-15 02:48:38,311 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 02:48:38,311 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-02-15 02:48:38,311 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=163, Invalid=1027, Unknown=0, NotChecked=0, Total=1190 [2022-02-15 02:48:38,311 INFO L87 Difference]: Start difference. First operand 5512 states and 7753 transitions. Second operand has 34 states, 33 states have (on average 5.424242424242424) internal successors, (179), 32 states have internal predecessors, (179), 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 02:48:40,879 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 02:48:40,880 INFO L93 Difference]: Finished difference Result 9361 states and 12919 transitions. [2022-02-15 02:48:40,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2022-02-15 02:48:40,880 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 33 states have (on average 5.424242424242424) internal successors, (179), 32 states have internal predecessors, (179), 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 183 [2022-02-15 02:48:40,880 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 02:48:40,888 INFO L225 Difference]: With dead ends: 9361 [2022-02-15 02:48:40,888 INFO L226 Difference]: Without dead ends: 6440 [2022-02-15 02:48:40,894 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 180 GetRequests, 42 SyntacticMatches, 74 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2907 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=520, Invalid=3770, Unknown=0, NotChecked=0, Total=4290 [2022-02-15 02:48:40,898 INFO L933 BasicCegarLoop]: 215 mSDtfsCounter, 898 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 4420 mSolverCounterSat, 114 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 898 SdHoareTripleChecker+Valid, 257 SdHoareTripleChecker+Invalid, 4534 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 114 IncrementalHoareTripleChecker+Valid, 4420 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-02-15 02:48:40,898 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [898 Valid, 257 Invalid, 4534 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [114 Valid, 4420 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-02-15 02:48:40,903 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6440 states. [2022-02-15 02:48:41,472 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6440 to 5405. [2022-02-15 02:48:41,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5405 states, 5400 states have (on average 1.4112962962962963) internal successors, (7621), 5400 states have internal predecessors, (7621), 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 02:48:41,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5405 states to 5405 states and 7625 transitions. [2022-02-15 02:48:41,482 INFO L78 Accepts]: Start accepts. Automaton has 5405 states and 7625 transitions. Word has length 183 [2022-02-15 02:48:41,483 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 02:48:41,483 INFO L470 AbstractCegarLoop]: Abstraction has 5405 states and 7625 transitions. [2022-02-15 02:48:41,483 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 33 states have (on average 5.424242424242424) internal successors, (179), 32 states have internal predecessors, (179), 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 02:48:41,483 INFO L276 IsEmpty]: Start isEmpty. Operand 5405 states and 7625 transitions. [2022-02-15 02:48:41,486 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2022-02-15 02:48:41,486 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 02:48:41,486 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2022-02-15 02:48:41,486 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2022-02-15 02:48:41,486 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 02:48:41,486 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 02:48:41,486 INFO L85 PathProgramCache]: Analyzing trace with hash 1542727181, now seen corresponding path program 1 times [2022-02-15 02:48:41,486 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 02:48:41,486 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1404750942] [2022-02-15 02:48:41,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 02:48:41,672 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 02:48:42,104 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 7 AssignedVariables, 1 ReadonlyVariables, Eigenvalues: {0={1=5, 2=1}, 1={1=2}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:48:45,536 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 8 AssignedVariables, 1 ReadonlyVariables, Eigenvalues: {0={1=6, 2=1}, 1={1=2}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:48:45,536 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2022-02-15 02:48:48,910 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 8 AssignedVariables, 1 ReadonlyVariables, Eigenvalues: {0={1=6, 2=1}, 1={1=2}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:48:49,042 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 02:48:49,042 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2022-02-15 02:48:49,170 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 02:48:49,616 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 7 AssignedVariables, 1 ReadonlyVariables, Eigenvalues: {0={1=5, 2=1}, 1={1=2}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:48:50,079 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 02:48:53,510 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 02:48:53,510 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2022-02-15 02:48:53,638 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 02:48:53,639 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2022-02-15 02:48:53,639 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 02:48:53,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:48:53,730 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 02:48:53,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:48:53,733 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 02:48:55,304 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 02:48:55,304 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1404750942] [2022-02-15 02:48:55,305 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1404750942] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 02:48:55,305 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 02:48:55,305 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [35] imperfect sequences [] total 35 [2022-02-15 02:48:55,305 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [871408052] [2022-02-15 02:48:55,305 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 02:48:55,305 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2022-02-15 02:48:55,305 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 02:48:55,305 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2022-02-15 02:48:55,306 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=132, Invalid=1058, Unknown=0, NotChecked=0, Total=1190 [2022-02-15 02:48:55,306 INFO L87 Difference]: Start difference. First operand 5405 states and 7625 transitions. Second operand has 35 states, 34 states have (on average 5.294117647058823) internal successors, (180), 33 states have internal predecessors, (180), 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 02:48:58,320 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 02:48:58,321 INFO L93 Difference]: Finished difference Result 8698 states and 12119 transitions. [2022-02-15 02:48:58,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-02-15 02:48:58,321 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 34 states have (on average 5.294117647058823) internal successors, (180), 33 states have internal predecessors, (180), 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 185 [2022-02-15 02:48:58,321 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 02:48:58,328 INFO L225 Difference]: With dead ends: 8698 [2022-02-15 02:48:58,328 INFO L226 Difference]: Without dead ends: 5778 [2022-02-15 02:48:58,335 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 183 GetRequests, 75 SyntacticMatches, 43 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2055 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=450, Invalid=3972, Unknown=0, NotChecked=0, Total=4422 [2022-02-15 02:48:58,335 INFO L933 BasicCegarLoop]: 209 mSDtfsCounter, 668 mSDsluCounter, 82 mSDsCounter, 0 mSdLazyCounter, 4946 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 668 SdHoareTripleChecker+Valid, 291 SdHoareTripleChecker+Invalid, 4991 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 4946 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-02-15 02:48:58,335 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [668 Valid, 291 Invalid, 4991 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 4946 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-02-15 02:48:58,338 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5778 states. [2022-02-15 02:48:58,922 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5778 to 5496. [2022-02-15 02:48:58,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5496 states, 5491 states have (on average 1.405208523037698) internal successors, (7716), 5491 states have internal predecessors, (7716), 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 02:48:58,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5496 states to 5496 states and 7720 transitions. [2022-02-15 02:48:58,934 INFO L78 Accepts]: Start accepts. Automaton has 5496 states and 7720 transitions. Word has length 185 [2022-02-15 02:48:58,934 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 02:48:58,934 INFO L470 AbstractCegarLoop]: Abstraction has 5496 states and 7720 transitions. [2022-02-15 02:48:58,934 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 34 states have (on average 5.294117647058823) internal successors, (180), 33 states have internal predecessors, (180), 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 02:48:58,934 INFO L276 IsEmpty]: Start isEmpty. Operand 5496 states and 7720 transitions. [2022-02-15 02:48:58,937 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 187 [2022-02-15 02:48:58,937 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 02:48:58,937 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 02:48:58,938 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2022-02-15 02:48:58,938 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 02:48:58,938 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 02:48:58,938 INFO L85 PathProgramCache]: Analyzing trace with hash -1595365, now seen corresponding path program 2 times [2022-02-15 02:48:58,938 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 02:48:58,938 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1155295] [2022-02-15 02:48:58,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 02:48:59,073 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 02:49:02,478 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 8 AssignedVariables, 1 ReadonlyVariables, Eigenvalues: {0={1=6, 2=1}, 1={1=2}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:49:05,936 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 8 AssignedVariables, 1 ReadonlyVariables, Eigenvalues: {0={1=6, 2=1}, 1={1=2}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:49:05,937 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2022-02-15 02:49:05,937 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-15 02:49:05,937 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-02-15 02:49:06,079 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 02:49:06,079 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2022-02-15 02:49:06,079 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-15 02:49:06,079 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-02-15 02:49:06,080 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-15 02:49:06,080 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-02-15 02:49:06,530 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 02:49:06,530 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-15 02:49:06,530 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-02-15 02:49:06,531 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2022-02-15 02:49:06,531 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 02:49:06,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:49:06,617 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 02:49:06,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:49:06,619 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 02:49:09,243 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 02:49:09,243 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1155295] [2022-02-15 02:49:09,243 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1155295] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 02:49:09,243 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 02:49:09,243 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [37] imperfect sequences [] total 37 [2022-02-15 02:49:09,244 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1577038705] [2022-02-15 02:49:09,244 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 02:49:09,244 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2022-02-15 02:49:09,244 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 02:49:09,244 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2022-02-15 02:49:09,244 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=143, Invalid=1189, Unknown=0, NotChecked=0, Total=1332 [2022-02-15 02:49:09,245 INFO L87 Difference]: Start difference. First operand 5496 states and 7720 transitions. Second operand has 37 states, 36 states have (on average 5.055555555555555) internal successors, (182), 35 states have internal predecessors, (182), 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 02:49:13,347 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 02:49:13,348 INFO L93 Difference]: Finished difference Result 9021 states and 12522 transitions. [2022-02-15 02:49:13,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2022-02-15 02:49:13,348 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 36 states have (on average 5.055555555555555) internal successors, (182), 35 states have internal predecessors, (182), 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 186 [2022-02-15 02:49:13,348 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 02:49:13,355 INFO L225 Difference]: With dead ends: 9021 [2022-02-15 02:49:13,356 INFO L226 Difference]: Without dead ends: 6101 [2022-02-15 02:49:13,361 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 184 GetRequests, 41 SyntacticMatches, 74 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2843 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=475, Invalid=4495, Unknown=0, NotChecked=0, Total=4970 [2022-02-15 02:49:13,361 INFO L933 BasicCegarLoop]: 254 mSDtfsCounter, 774 mSDsluCounter, 92 mSDsCounter, 0 mSdLazyCounter, 7057 mSolverCounterSat, 94 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 774 SdHoareTripleChecker+Valid, 346 SdHoareTripleChecker+Invalid, 7151 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 94 IncrementalHoareTripleChecker+Valid, 7057 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2022-02-15 02:49:13,362 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [774 Valid, 346 Invalid, 7151 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [94 Valid, 7057 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2022-02-15 02:49:13,364 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6101 states. [2022-02-15 02:49:13,942 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6101 to 5406. [2022-02-15 02:49:13,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5406 states, 5401 states have (on average 1.4112201444177004) internal successors, (7622), 5401 states have internal predecessors, (7622), 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 02:49:13,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5406 states to 5406 states and 7626 transitions. [2022-02-15 02:49:13,952 INFO L78 Accepts]: Start accepts. Automaton has 5406 states and 7626 transitions. Word has length 186 [2022-02-15 02:49:13,952 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 02:49:13,952 INFO L470 AbstractCegarLoop]: Abstraction has 5406 states and 7626 transitions. [2022-02-15 02:49:13,952 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 36 states have (on average 5.055555555555555) internal successors, (182), 35 states have internal predecessors, (182), 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 02:49:13,952 INFO L276 IsEmpty]: Start isEmpty. Operand 5406 states and 7626 transitions. [2022-02-15 02:49:13,955 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 211 [2022-02-15 02:49:13,955 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 02:49:13,955 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 4, 4, 3, 3, 3, 3, 3, 3, 3, 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] [2022-02-15 02:49:13,956 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2022-02-15 02:49:13,956 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 02:49:13,956 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 02:49:13,956 INFO L85 PathProgramCache]: Analyzing trace with hash 1566462135, now seen corresponding path program 1 times [2022-02-15 02:49:13,956 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 02:49:13,956 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1274593347] [2022-02-15 02:49:13,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 02:49:15,164 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 7 AssignedVariables, 1 ReadonlyVariables, Eigenvalues: {0={1=7}, 1={1=2}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:49:15,164 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-02-15 02:49:15,164 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 02:49:15,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:49:15,185 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 02:49:15,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:49:15,187 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 02:49:15,464 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 02:49:15,465 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1274593347] [2022-02-15 02:49:15,465 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1274593347] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 02:49:15,465 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 02:49:15,465 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2022-02-15 02:49:15,466 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2081229810] [2022-02-15 02:49:15,466 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 02:49:15,466 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-02-15 02:49:15,466 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 02:49:15,466 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-02-15 02:49:15,466 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=201, Unknown=0, NotChecked=0, Total=272 [2022-02-15 02:49:15,467 INFO L87 Difference]: Start difference. First operand 5406 states and 7626 transitions. Second operand has 17 states, 17 states have (on average 7.823529411764706) internal successors, (133), 16 states have internal predecessors, (133), 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 02:49:17,015 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 02:49:17,015 INFO L93 Difference]: Finished difference Result 11543 states and 16271 transitions. [2022-02-15 02:49:17,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-02-15 02:49:17,015 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 7.823529411764706) internal successors, (133), 16 states have internal predecessors, (133), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 210 [2022-02-15 02:49:17,016 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 02:49:17,024 INFO L225 Difference]: With dead ends: 11543 [2022-02-15 02:49:17,024 INFO L226 Difference]: Without dead ends: 6151 [2022-02-15 02:49:17,031 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 196 GetRequests, 167 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 165 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=207, Invalid=723, Unknown=0, NotChecked=0, Total=930 [2022-02-15 02:49:17,031 INFO L933 BasicCegarLoop]: 220 mSDtfsCounter, 727 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 2074 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 727 SdHoareTripleChecker+Valid, 257 SdHoareTripleChecker+Invalid, 2131 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 2074 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-02-15 02:49:17,031 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [727 Valid, 257 Invalid, 2131 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [57 Valid, 2074 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-02-15 02:49:17,035 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6151 states. [2022-02-15 02:49:17,638 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6151 to 5592. [2022-02-15 02:49:17,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5592 states, 5587 states have (on average 1.4173975299803114) internal successors, (7919), 5587 states have internal predecessors, (7919), 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 02:49:17,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5592 states to 5592 states and 7923 transitions. [2022-02-15 02:49:17,648 INFO L78 Accepts]: Start accepts. Automaton has 5592 states and 7923 transitions. Word has length 210 [2022-02-15 02:49:17,648 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 02:49:17,648 INFO L470 AbstractCegarLoop]: Abstraction has 5592 states and 7923 transitions. [2022-02-15 02:49:17,649 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 7.823529411764706) internal successors, (133), 16 states have internal predecessors, (133), 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 02:49:17,649 INFO L276 IsEmpty]: Start isEmpty. Operand 5592 states and 7923 transitions. [2022-02-15 02:49:17,652 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 212 [2022-02-15 02:49:17,652 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 02:49:17,652 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 4, 4, 3, 3, 3, 3, 3, 3, 3, 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] [2022-02-15 02:49:17,652 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2022-02-15 02:49:17,652 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 02:49:17,652 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 02:49:17,652 INFO L85 PathProgramCache]: Analyzing trace with hash -1301296321, now seen corresponding path program 1 times [2022-02-15 02:49:17,652 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 02:49:17,653 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1981624398] [2022-02-15 02:49:17,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 02:49:19,053 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 7 AssignedVariables, 1 ReadonlyVariables, Eigenvalues: {0={1=7}, 1={1=2}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:49:19,053 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-02-15 02:49:19,053 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 02:49:19,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:49:19,090 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 02:49:19,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:49:19,094 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 02:49:19,431 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 02:49:19,431 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1981624398] [2022-02-15 02:49:19,431 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1981624398] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 02:49:19,431 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 02:49:19,431 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2022-02-15 02:49:19,431 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [785117478] [2022-02-15 02:49:19,431 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 02:49:19,432 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-02-15 02:49:19,432 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 02:49:19,432 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-02-15 02:49:19,432 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=198, Unknown=0, NotChecked=0, Total=272 [2022-02-15 02:49:19,432 INFO L87 Difference]: Start difference. First operand 5592 states and 7923 transitions. Second operand has 17 states, 17 states have (on average 7.882352941176471) internal successors, (134), 16 states have internal predecessors, (134), 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 02:49:21,327 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 02:49:21,327 INFO L93 Difference]: Finished difference Result 11623 states and 16449 transitions. [2022-02-15 02:49:21,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-02-15 02:49:21,327 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 7.882352941176471) internal successors, (134), 16 states have internal predecessors, (134), 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 211 [2022-02-15 02:49:21,328 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 02:49:21,335 INFO L225 Difference]: With dead ends: 11623 [2022-02-15 02:49:21,335 INFO L226 Difference]: Without dead ends: 6045 [2022-02-15 02:49:21,341 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 197 GetRequests, 168 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 164 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=216, Invalid=714, Unknown=0, NotChecked=0, Total=930 [2022-02-15 02:49:21,342 INFO L933 BasicCegarLoop]: 250 mSDtfsCounter, 641 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 2824 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 641 SdHoareTripleChecker+Valid, 297 SdHoareTripleChecker+Invalid, 2880 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 2824 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-02-15 02:49:21,342 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [641 Valid, 297 Invalid, 2880 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 2824 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-02-15 02:49:21,344 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6045 states. [2022-02-15 02:49:21,995 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6045 to 5593. [2022-02-15 02:49:22,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5593 states, 5588 states have (on average 1.4173228346456692) internal successors, (7920), 5588 states have internal predecessors, (7920), 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 02:49:22,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5593 states to 5593 states and 7924 transitions. [2022-02-15 02:49:22,005 INFO L78 Accepts]: Start accepts. Automaton has 5593 states and 7924 transitions. Word has length 211 [2022-02-15 02:49:22,005 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 02:49:22,005 INFO L470 AbstractCegarLoop]: Abstraction has 5593 states and 7924 transitions. [2022-02-15 02:49:22,006 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 7.882352941176471) internal successors, (134), 16 states have internal predecessors, (134), 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 02:49:22,006 INFO L276 IsEmpty]: Start isEmpty. Operand 5593 states and 7924 transitions. [2022-02-15 02:49:22,009 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 216 [2022-02-15 02:49:22,009 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 02:49:22,009 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 5, 5, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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 02:49:22,009 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2022-02-15 02:49:22,009 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 02:49:22,009 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 02:49:22,009 INFO L85 PathProgramCache]: Analyzing trace with hash 609291985, now seen corresponding path program 1 times [2022-02-15 02:49:22,009 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 02:49:22,009 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1017345986] [2022-02-15 02:49:22,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 02:49:25,523 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 02:49:25,948 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 02:49:26,384 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 02:49:26,446 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 02:49:26,504 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 5 AssignedVariables, 1 ReadonlyVariables, Eigenvalues: {0={1=3, 2=1}, 1={1=2}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:49:26,504 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2022-02-15 02:49:26,505 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-15 02:49:26,505 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-02-15 02:49:26,505 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2022-02-15 02:49:26,920 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 02:49:27,391 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 02:49:27,447 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 02:49:27,489 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 5 AssignedVariables, 1 ReadonlyVariables, Eigenvalues: {0={1=3, 2=1}, 1={1=2}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:49:27,932 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 02:49:31,251 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 02:49:31,252 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2022-02-15 02:49:31,252 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 02:49:31,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:49:31,318 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 02:49:31,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:49:31,321 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 02:49:32,025 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 02:49:32,025 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1017345986] [2022-02-15 02:49:32,025 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1017345986] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 02:49:32,025 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 02:49:32,025 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [29] imperfect sequences [] total 29 [2022-02-15 02:49:32,025 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1211564486] [2022-02-15 02:49:32,025 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 02:49:32,026 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2022-02-15 02:49:32,026 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 02:49:32,026 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2022-02-15 02:49:32,026 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=147, Invalid=783, Unknown=0, NotChecked=0, Total=930 [2022-02-15 02:49:32,026 INFO L87 Difference]: Start difference. First operand 5593 states and 7924 transitions. Second operand has 29 states, 28 states have (on average 6.071428571428571) internal successors, (170), 27 states have internal predecessors, (170), 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 02:49:35,419 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 02:49:35,420 INFO L93 Difference]: Finished difference Result 12090 states and 16975 transitions. [2022-02-15 02:49:35,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-02-15 02:49:35,420 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 28 states have (on average 6.071428571428571) internal successors, (170), 27 states have internal predecessors, (170), 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 215 [2022-02-15 02:49:35,420 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 02:49:35,428 INFO L225 Difference]: With dead ends: 12090 [2022-02-15 02:49:35,428 INFO L226 Difference]: Without dead ends: 6511 [2022-02-15 02:49:35,434 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 208 GetRequests, 153 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 920 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=437, Invalid=2755, Unknown=0, NotChecked=0, Total=3192 [2022-02-15 02:49:35,435 INFO L933 BasicCegarLoop]: 201 mSDtfsCounter, 930 mSDsluCounter, 77 mSDsCounter, 0 mSdLazyCounter, 5160 mSolverCounterSat, 65 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 930 SdHoareTripleChecker+Valid, 278 SdHoareTripleChecker+Invalid, 5225 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 5160 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2022-02-15 02:49:35,435 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [930 Valid, 278 Invalid, 5225 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [65 Valid, 5160 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2022-02-15 02:49:35,439 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6511 states. [2022-02-15 02:49:36,104 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6511 to 5636. [2022-02-15 02:49:36,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5636 states, 5631 states have (on average 1.4144912093766648) internal successors, (7965), 5631 states have internal predecessors, (7965), 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 02:49:36,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5636 states to 5636 states and 7969 transitions. [2022-02-15 02:49:36,114 INFO L78 Accepts]: Start accepts. Automaton has 5636 states and 7969 transitions. Word has length 215 [2022-02-15 02:49:36,114 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 02:49:36,114 INFO L470 AbstractCegarLoop]: Abstraction has 5636 states and 7969 transitions. [2022-02-15 02:49:36,114 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 28 states have (on average 6.071428571428571) internal successors, (170), 27 states have internal predecessors, (170), 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 02:49:36,114 INFO L276 IsEmpty]: Start isEmpty. Operand 5636 states and 7969 transitions. [2022-02-15 02:49:36,117 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 216 [2022-02-15 02:49:36,118 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 02:49:36,118 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 5, 5, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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 02:49:36,118 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2022-02-15 02:49:36,118 INFO L402 AbstractCegarLoop]: === Iteration 35 === Targeting ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 02:49:36,118 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 02:49:36,118 INFO L85 PathProgramCache]: Analyzing trace with hash 169555280, now seen corresponding path program 1 times [2022-02-15 02:49:36,118 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 02:49:36,118 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [584738216] [2022-02-15 02:49:36,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 02:50:11,408 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 8 AssignedVariables, 2 ReadonlyVariables, Eigenvalues: {0={1=6, 2=1}, 1={1=3}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:50:11,806 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 02:50:12,228 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 02:50:12,268 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 02:50:12,300 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 5 AssignedVariables, 1 ReadonlyVariables, Eigenvalues: {0={1=3, 2=1}, 1={1=2}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:50:12,301 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2022-02-15 02:50:12,676 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 7 AssignedVariables, 1 ReadonlyVariables, Eigenvalues: {0={1=7}, 1={1=2}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:50:12,676 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2022-02-15 02:50:13,104 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 02:50:13,504 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 02:50:13,555 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 02:50:13,593 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 5 AssignedVariables, 1 ReadonlyVariables, Eigenvalues: {0={1=3, 2=1}, 1={1=2}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:50:14,033 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 02:50:48,960 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 8 AssignedVariables, 2 ReadonlyVariables, Eigenvalues: {0={1=6, 2=1}, 1={1=3}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:50:48,961 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2022-02-15 02:50:48,961 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 02:50:48,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:50:49,056 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 02:50:49,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:50:49,059 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 02:50:49,979 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 02:50:49,980 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [584738216] [2022-02-15 02:50:49,980 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [584738216] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 02:50:49,980 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 02:50:49,980 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [32] imperfect sequences [] total 32 [2022-02-15 02:50:49,980 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [245452325] [2022-02-15 02:50:49,980 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 02:50:49,980 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-02-15 02:50:49,980 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 02:50:49,981 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-02-15 02:50:49,981 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=188, Invalid=1002, Unknown=0, NotChecked=0, Total=1190 [2022-02-15 02:50:49,981 INFO L87 Difference]: Start difference. First operand 5636 states and 7969 transitions. Second operand has 32 states, 31 states have (on average 6.193548387096774) internal successors, (192), 30 states have internal predecessors, (192), 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 02:50:52,842 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 02:50:52,842 INFO L93 Difference]: Finished difference Result 11388 states and 16083 transitions. [2022-02-15 02:50:52,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-02-15 02:50:52,844 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 31 states have (on average 6.193548387096774) internal successors, (192), 30 states have internal predecessors, (192), 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 215 [2022-02-15 02:50:52,844 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 02:50:52,851 INFO L225 Difference]: With dead ends: 11388 [2022-02-15 02:50:52,851 INFO L226 Difference]: Without dead ends: 5766 [2022-02-15 02:50:52,856 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 208 GetRequests, 146 SyntacticMatches, 0 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1131 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=524, Invalid=3508, Unknown=0, NotChecked=0, Total=4032 [2022-02-15 02:50:52,857 INFO L933 BasicCegarLoop]: 177 mSDtfsCounter, 1139 mSDsluCounter, 87 mSDsCounter, 0 mSdLazyCounter, 5793 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1139 SdHoareTripleChecker+Valid, 264 SdHoareTripleChecker+Invalid, 5847 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 5793 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-02-15 02:50:52,857 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1139 Valid, 264 Invalid, 5847 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 5793 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-02-15 02:50:52,859 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5766 states. [2022-02-15 02:50:53,521 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5766 to 5740. [2022-02-15 02:50:53,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5740 states, 5735 states have (on average 1.4074978204010462) internal successors, (8072), 5735 states have internal predecessors, (8072), 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 02:50:53,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5740 states to 5740 states and 8076 transitions. [2022-02-15 02:50:53,531 INFO L78 Accepts]: Start accepts. Automaton has 5740 states and 8076 transitions. Word has length 215 [2022-02-15 02:50:53,531 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 02:50:53,531 INFO L470 AbstractCegarLoop]: Abstraction has 5740 states and 8076 transitions. [2022-02-15 02:50:53,531 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 31 states have (on average 6.193548387096774) internal successors, (192), 30 states have internal predecessors, (192), 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 02:50:53,531 INFO L276 IsEmpty]: Start isEmpty. Operand 5740 states and 8076 transitions. [2022-02-15 02:50:53,534 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 216 [2022-02-15 02:50:53,534 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 02:50:53,535 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 5, 5, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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 02:50:53,535 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2022-02-15 02:50:53,535 INFO L402 AbstractCegarLoop]: === Iteration 36 === Targeting ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 02:50:53,535 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 02:50:53,535 INFO L85 PathProgramCache]: Analyzing trace with hash 179633679, now seen corresponding path program 1 times [2022-02-15 02:50:53,535 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 02:50:53,535 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1399992077] [2022-02-15 02:50:53,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 02:50:56,955 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 02:50:57,361 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 02:50:57,821 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 02:50:57,879 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 02:50:57,922 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 5 AssignedVariables, 1 ReadonlyVariables, Eigenvalues: {0={1=3, 2=1}, 1={1=2}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:50:57,922 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2022-02-15 02:50:58,294 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 7 AssignedVariables, 1 ReadonlyVariables, Eigenvalues: {0={1=7}, 1={1=2}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:50:58,294 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2022-02-15 02:50:58,709 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 02:50:59,143 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 02:51:02,475 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 02:51:02,524 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 02:51:02,562 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 5 AssignedVariables, 1 ReadonlyVariables, Eigenvalues: {0={1=3, 2=1}, 1={1=2}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:51:02,967 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 02:51:02,967 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2022-02-15 02:51:02,967 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 02:51:03,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:51:03,082 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 02:51:03,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:51:03,085 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 02:51:03,780 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 02:51:03,780 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1399992077] [2022-02-15 02:51:03,780 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1399992077] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 02:51:03,780 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 02:51:03,780 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [27] imperfect sequences [] total 27 [2022-02-15 02:51:03,780 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [519401728] [2022-02-15 02:51:03,780 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 02:51:03,781 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-02-15 02:51:03,781 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 02:51:03,781 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-02-15 02:51:03,781 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=123, Invalid=689, Unknown=0, NotChecked=0, Total=812 [2022-02-15 02:51:03,781 INFO L87 Difference]: Start difference. First operand 5740 states and 8076 transitions. Second operand has 27 states, 26 states have (on average 6.538461538461538) internal successors, (170), 25 states have internal predecessors, (170), 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 02:51:06,480 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 02:51:06,481 INFO L93 Difference]: Finished difference Result 11834 states and 16666 transitions. [2022-02-15 02:51:06,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-02-15 02:51:06,481 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 26 states have (on average 6.538461538461538) internal successors, (170), 25 states have internal predecessors, (170), 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 215 [2022-02-15 02:51:06,482 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 02:51:06,490 INFO L225 Difference]: With dead ends: 11834 [2022-02-15 02:51:06,490 INFO L226 Difference]: Without dead ends: 6212 [2022-02-15 02:51:06,503 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 206 GetRequests, 152 SyntacticMatches, 3 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 788 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=367, Invalid=2389, Unknown=0, NotChecked=0, Total=2756 [2022-02-15 02:51:06,504 INFO L933 BasicCegarLoop]: 178 mSDtfsCounter, 878 mSDsluCounter, 72 mSDsCounter, 0 mSdLazyCounter, 3577 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 878 SdHoareTripleChecker+Valid, 250 SdHoareTripleChecker+Invalid, 3637 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 3577 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-02-15 02:51:06,504 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [878 Valid, 250 Invalid, 3637 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [60 Valid, 3577 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-02-15 02:51:06,507 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6212 states. [2022-02-15 02:51:07,231 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6212 to 5818. [2022-02-15 02:51:07,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5818 states, 5813 states have (on average 1.4032341303973852) internal successors, (8157), 5813 states have internal predecessors, (8157), 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 02:51:07,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5818 states to 5818 states and 8161 transitions. [2022-02-15 02:51:07,243 INFO L78 Accepts]: Start accepts. Automaton has 5818 states and 8161 transitions. Word has length 215 [2022-02-15 02:51:07,243 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 02:51:07,243 INFO L470 AbstractCegarLoop]: Abstraction has 5818 states and 8161 transitions. [2022-02-15 02:51:07,243 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 26 states have (on average 6.538461538461538) internal successors, (170), 25 states have internal predecessors, (170), 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 02:51:07,243 INFO L276 IsEmpty]: Start isEmpty. Operand 5818 states and 8161 transitions. [2022-02-15 02:51:07,247 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 217 [2022-02-15 02:51:07,247 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 02:51:07,247 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 5, 5, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 02:51:07,247 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2022-02-15 02:51:07,247 INFO L402 AbstractCegarLoop]: === Iteration 37 === Targeting ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 02:51:07,247 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 02:51:07,247 INFO L85 PathProgramCache]: Analyzing trace with hash -1493256800, now seen corresponding path program 1 times [2022-02-15 02:51:07,247 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 02:51:07,248 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [382824704] [2022-02-15 02:51:07,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 02:51:07,672 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 02:51:43,178 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 8 AssignedVariables, 2 ReadonlyVariables, Eigenvalues: {0={1=6, 2=1}, 1={1=3}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:51:43,604 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 02:51:43,662 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 02:51:43,703 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 5 AssignedVariables, 1 ReadonlyVariables, Eigenvalues: {0={1=3, 2=1}, 1={1=2}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:51:43,703 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2022-02-15 02:51:44,075 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 7 AssignedVariables, 1 ReadonlyVariables, Eigenvalues: {0={1=7}, 1={1=2}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:51:44,075 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2022-02-15 02:52:19,014 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 8 AssignedVariables, 2 ReadonlyVariables, Eigenvalues: {0={1=6, 2=1}, 1={1=3}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:52:19,428 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 02:52:19,835 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 02:52:19,893 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 02:52:19,933 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 5 AssignedVariables, 1 ReadonlyVariables, Eigenvalues: {0={1=3, 2=1}, 1={1=2}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:52:20,348 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 02:52:20,348 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2022-02-15 02:52:20,348 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 02:52:20,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:52:20,418 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 02:52:20,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:52:20,420 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 02:52:21,399 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 02:52:21,399 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [382824704] [2022-02-15 02:52:21,399 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [382824704] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 02:52:21,400 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 02:52:21,400 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [33] imperfect sequences [] total 33 [2022-02-15 02:52:21,400 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1582224755] [2022-02-15 02:52:21,400 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 02:52:21,400 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-02-15 02:52:21,400 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 02:52:21,400 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-02-15 02:52:21,401 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=143, Invalid=1047, Unknown=0, NotChecked=0, Total=1190 [2022-02-15 02:52:21,401 INFO L87 Difference]: Start difference. First operand 5818 states and 8161 transitions. Second operand has 33 states, 32 states have (on average 6.03125) internal successors, (193), 31 states have internal predecessors, (193), 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 02:52:24,632 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 02:52:24,632 INFO L93 Difference]: Finished difference Result 11569 states and 16276 transitions. [2022-02-15 02:52:24,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2022-02-15 02:52:24,633 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 32 states have (on average 6.03125) internal successors, (193), 31 states have internal predecessors, (193), 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 216 [2022-02-15 02:52:24,633 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 02:52:24,640 INFO L225 Difference]: With dead ends: 11569 [2022-02-15 02:52:24,640 INFO L226 Difference]: Without dead ends: 5869 [2022-02-15 02:52:24,648 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 210 GetRequests, 147 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1135 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=447, Invalid=3713, Unknown=0, NotChecked=0, Total=4160 [2022-02-15 02:52:24,648 INFO L933 BasicCegarLoop]: 194 mSDtfsCounter, 1104 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 6273 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1104 SdHoareTripleChecker+Valid, 256 SdHoareTripleChecker+Invalid, 6325 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 6273 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-02-15 02:52:24,649 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1104 Valid, 256 Invalid, 6325 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 6273 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2022-02-15 02:52:24,652 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5869 states. [2022-02-15 02:52:25,314 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5869 to 5820. [2022-02-15 02:52:25,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5820 states, 5815 states have (on average 1.4032674118658641) internal successors, (8160), 5815 states have internal predecessors, (8160), 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 02:52:25,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5820 states to 5820 states and 8164 transitions. [2022-02-15 02:52:25,325 INFO L78 Accepts]: Start accepts. Automaton has 5820 states and 8164 transitions. Word has length 216 [2022-02-15 02:52:25,325 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 02:52:25,325 INFO L470 AbstractCegarLoop]: Abstraction has 5820 states and 8164 transitions. [2022-02-15 02:52:25,325 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 32 states have (on average 6.03125) internal successors, (193), 31 states have internal predecessors, (193), 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 02:52:25,326 INFO L276 IsEmpty]: Start isEmpty. Operand 5820 states and 8164 transitions. [2022-02-15 02:52:25,329 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 217 [2022-02-15 02:52:25,329 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 02:52:25,329 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 5, 5, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 02:52:25,329 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2022-02-15 02:52:25,329 INFO L402 AbstractCegarLoop]: === Iteration 38 === Targeting ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 02:52:25,329 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 02:52:25,329 INFO L85 PathProgramCache]: Analyzing trace with hash 1764682057, now seen corresponding path program 1 times [2022-02-15 02:52:25,330 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 02:52:25,330 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [140268220] [2022-02-15 02:52:25,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 02:52:28,654 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 02:52:28,746 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 6 AssignedVariables, 1 ReadonlyVariables, Eigenvalues: {0={1=4, 2=1}, 1={1=2}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:52:29,152 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 02:52:29,558 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 02:52:29,608 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 02:52:29,608 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2022-02-15 02:52:29,991 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 7 AssignedVariables, 1 ReadonlyVariables, Eigenvalues: {0={1=7}, 1={1=2}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:52:29,991 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2022-02-15 02:52:30,395 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 02:52:30,796 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 02:52:30,847 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 02:52:31,252 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 02:52:31,391 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 6 AssignedVariables, 1 ReadonlyVariables, Eigenvalues: {0={1=4, 2=1}, 1={1=2}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:52:34,685 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 02:52:34,685 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2022-02-15 02:52:34,686 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 02:52:34,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:52:34,740 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 02:52:34,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:52:34,743 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 02:52:35,392 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 02:52:35,393 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [140268220] [2022-02-15 02:52:35,393 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [140268220] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 02:52:35,393 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 02:52:35,393 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [29] imperfect sequences [] total 29 [2022-02-15 02:52:35,393 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [523163409] [2022-02-15 02:52:35,393 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 02:52:35,393 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2022-02-15 02:52:35,393 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 02:52:35,394 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2022-02-15 02:52:35,394 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=151, Invalid=779, Unknown=0, NotChecked=0, Total=930 [2022-02-15 02:52:35,394 INFO L87 Difference]: Start difference. First operand 5820 states and 8164 transitions. Second operand has 29 states, 28 states have (on average 6.107142857142857) internal successors, (171), 27 states have internal predecessors, (171), 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 02:52:38,399 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 02:52:38,400 INFO L93 Difference]: Finished difference Result 12414 states and 17315 transitions. [2022-02-15 02:52:38,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-02-15 02:52:38,400 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 28 states have (on average 6.107142857142857) internal successors, (171), 27 states have internal predecessors, (171), 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 216 [2022-02-15 02:52:38,400 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 02:52:38,407 INFO L225 Difference]: With dead ends: 12414 [2022-02-15 02:52:38,407 INFO L226 Difference]: Without dead ends: 6714 [2022-02-15 02:52:38,425 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 209 GetRequests, 154 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 937 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=448, Invalid=2744, Unknown=0, NotChecked=0, Total=3192 [2022-02-15 02:52:38,425 INFO L933 BasicCegarLoop]: 211 mSDtfsCounter, 921 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 4303 mSolverCounterSat, 76 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 921 SdHoareTripleChecker+Valid, 238 SdHoareTripleChecker+Invalid, 4379 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 76 IncrementalHoareTripleChecker+Valid, 4303 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-02-15 02:52:38,426 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [921 Valid, 238 Invalid, 4379 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [76 Valid, 4303 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-02-15 02:52:38,429 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6714 states. [2022-02-15 02:52:39,127 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6714 to 5846. [2022-02-15 02:52:39,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5846 states, 5841 states have (on average 1.401814757746961) internal successors, (8188), 5841 states have internal predecessors, (8188), 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 02:52:39,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5846 states to 5846 states and 8192 transitions. [2022-02-15 02:52:39,137 INFO L78 Accepts]: Start accepts. Automaton has 5846 states and 8192 transitions. Word has length 216 [2022-02-15 02:52:39,137 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 02:52:39,137 INFO L470 AbstractCegarLoop]: Abstraction has 5846 states and 8192 transitions. [2022-02-15 02:52:39,137 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 28 states have (on average 6.107142857142857) internal successors, (171), 27 states have internal predecessors, (171), 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 02:52:39,138 INFO L276 IsEmpty]: Start isEmpty. Operand 5846 states and 8192 transitions. [2022-02-15 02:52:39,141 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 217 [2022-02-15 02:52:39,141 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 02:52:39,141 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 5, 5, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 02:52:39,141 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2022-02-15 02:52:39,141 INFO L402 AbstractCegarLoop]: === Iteration 39 === Targeting ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 02:52:39,141 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 02:52:39,141 INFO L85 PathProgramCache]: Analyzing trace with hash 1324945352, now seen corresponding path program 1 times [2022-02-15 02:52:39,141 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 02:52:39,141 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1704363310] [2022-02-15 02:52:39,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 02:53:14,596 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 8 AssignedVariables, 2 ReadonlyVariables, Eigenvalues: {0={1=6, 2=1}, 1={1=3}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:53:14,693 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 6 AssignedVariables, 1 ReadonlyVariables, Eigenvalues: {0={1=4, 2=1}, 1={1=2}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:53:15,107 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 02:53:15,519 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 02:53:15,579 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 02:53:15,579 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2022-02-15 02:53:15,579 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-15 02:53:15,579 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-02-15 02:53:15,580 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2022-02-15 02:53:16,003 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 02:53:16,421 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 02:53:16,477 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 02:53:16,893 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 02:53:51,985 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 8 AssignedVariables, 2 ReadonlyVariables, Eigenvalues: {0={1=6, 2=1}, 1={1=3}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:53:52,083 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 6 AssignedVariables, 1 ReadonlyVariables, Eigenvalues: {0={1=4, 2=1}, 1={1=2}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:53:52,083 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2022-02-15 02:53:52,083 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 02:53:52,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:53:52,145 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 02:53:52,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:53:52,147 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 02:53:53,059 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 02:53:53,059 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1704363310] [2022-02-15 02:53:53,059 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1704363310] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 02:53:53,059 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 02:53:53,059 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [32] imperfect sequences [] total 32 [2022-02-15 02:53:53,059 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1250798617] [2022-02-15 02:53:53,059 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 02:53:53,059 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-02-15 02:53:53,060 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 02:53:53,060 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-02-15 02:53:53,060 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=161, Invalid=961, Unknown=0, NotChecked=0, Total=1122 [2022-02-15 02:53:53,060 INFO L87 Difference]: Start difference. First operand 5846 states and 8192 transitions. Second operand has 32 states, 31 states have (on average 6.225806451612903) internal successors, (193), 30 states have internal predecessors, (193), 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 02:53:56,947 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 02:53:56,947 INFO L93 Difference]: Finished difference Result 13028 states and 18408 transitions. [2022-02-15 02:53:56,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-02-15 02:53:56,947 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 31 states have (on average 6.225806451612903) internal successors, (193), 30 states have internal predecessors, (193), 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 216 [2022-02-15 02:53:56,948 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 02:53:56,956 INFO L225 Difference]: With dead ends: 13028 [2022-02-15 02:53:56,956 INFO L226 Difference]: Without dead ends: 7150 [2022-02-15 02:53:56,963 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 213 GetRequests, 152 SyntacticMatches, 0 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1152 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=484, Invalid=3422, Unknown=0, NotChecked=0, Total=3906 [2022-02-15 02:53:56,964 INFO L933 BasicCegarLoop]: 222 mSDtfsCounter, 905 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 6222 mSolverCounterSat, 98 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 905 SdHoareTripleChecker+Valid, 284 SdHoareTripleChecker+Invalid, 6320 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 98 IncrementalHoareTripleChecker+Valid, 6222 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-02-15 02:53:56,965 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [905 Valid, 284 Invalid, 6320 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [98 Valid, 6222 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2022-02-15 02:53:56,968 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7150 states. [2022-02-15 02:53:57,690 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7150 to 6285. [2022-02-15 02:53:57,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6285 states, 6280 states have (on average 1.4222929936305733) internal successors, (8932), 6280 states have internal predecessors, (8932), 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 02:53:57,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6285 states to 6285 states and 8936 transitions. [2022-02-15 02:53:57,701 INFO L78 Accepts]: Start accepts. Automaton has 6285 states and 8936 transitions. Word has length 216 [2022-02-15 02:53:57,701 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 02:53:57,701 INFO L470 AbstractCegarLoop]: Abstraction has 6285 states and 8936 transitions. [2022-02-15 02:53:57,701 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 31 states have (on average 6.225806451612903) internal successors, (193), 30 states have internal predecessors, (193), 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 02:53:57,701 INFO L276 IsEmpty]: Start isEmpty. Operand 6285 states and 8936 transitions. [2022-02-15 02:53:57,704 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 227 [2022-02-15 02:53:57,704 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 02:53:57,704 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 5, 5, 5, 4, 4, 3, 3, 3, 3, 3, 3, 3, 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] [2022-02-15 02:53:57,705 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2022-02-15 02:53:57,705 INFO L402 AbstractCegarLoop]: === Iteration 40 === Targeting ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 02:53:57,705 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 02:53:57,705 INFO L85 PathProgramCache]: Analyzing trace with hash 1139973920, now seen corresponding path program 1 times [2022-02-15 02:53:57,705 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 02:53:57,705 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1256431349] [2022-02-15 02:53:57,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 02:53:59,062 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 7 AssignedVariables, 1 ReadonlyVariables, Eigenvalues: {0={1=7}, 1={1=2}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:53:59,062 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-02-15 02:53:59,062 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 02:53:59,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:53:59,098 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 02:53:59,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:53:59,100 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 02:53:59,461 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 02:53:59,461 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1256431349] [2022-02-15 02:53:59,462 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1256431349] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 02:53:59,462 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 02:53:59,462 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-02-15 02:53:59,462 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2024716041] [2022-02-15 02:53:59,462 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 02:53:59,462 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-02-15 02:53:59,462 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 02:53:59,462 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-02-15 02:53:59,462 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=250, Unknown=0, NotChecked=0, Total=342 [2022-02-15 02:53:59,463 INFO L87 Difference]: Start difference. First operand 6285 states and 8936 transitions. Second operand has 19 states, 19 states have (on average 7.526315789473684) internal successors, (143), 18 states have internal predecessors, (143), 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 02:54:01,514 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 02:54:01,515 INFO L93 Difference]: Finished difference Result 9940 states and 14101 transitions. [2022-02-15 02:54:01,515 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-02-15 02:54:01,515 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 7.526315789473684) internal successors, (143), 18 states have internal predecessors, (143), 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 226 [2022-02-15 02:54:01,515 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 02:54:01,524 INFO L225 Difference]: With dead ends: 9940 [2022-02-15 02:54:01,524 INFO L226 Difference]: Without dead ends: 6787 [2022-02-15 02:54:01,528 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 212 GetRequests, 179 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 216 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=270, Invalid=920, Unknown=0, NotChecked=0, Total=1190 [2022-02-15 02:54:01,528 INFO L933 BasicCegarLoop]: 253 mSDtfsCounter, 759 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 2914 mSolverCounterSat, 58 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 759 SdHoareTripleChecker+Valid, 290 SdHoareTripleChecker+Invalid, 2972 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 58 IncrementalHoareTripleChecker+Valid, 2914 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-02-15 02:54:01,528 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [759 Valid, 290 Invalid, 2972 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [58 Valid, 2914 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-02-15 02:54:01,532 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6787 states. [2022-02-15 02:54:02,317 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6787 to 6694. [2022-02-15 02:54:02,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6694 states, 6689 states have (on average 1.4206906862012258) internal successors, (9503), 6689 states have internal predecessors, (9503), 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 02:54:02,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6694 states to 6694 states and 9507 transitions. [2022-02-15 02:54:02,329 INFO L78 Accepts]: Start accepts. Automaton has 6694 states and 9507 transitions. Word has length 226 [2022-02-15 02:54:02,329 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 02:54:02,329 INFO L470 AbstractCegarLoop]: Abstraction has 6694 states and 9507 transitions. [2022-02-15 02:54:02,329 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 7.526315789473684) internal successors, (143), 18 states have internal predecessors, (143), 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 02:54:02,329 INFO L276 IsEmpty]: Start isEmpty. Operand 6694 states and 9507 transitions. [2022-02-15 02:54:02,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 229 [2022-02-15 02:54:02,333 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 02:54:02,333 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 5, 5, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 02:54:02,333 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2022-02-15 02:54:02,333 INFO L402 AbstractCegarLoop]: === Iteration 41 === Targeting ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 02:54:02,333 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 02:54:02,333 INFO L85 PathProgramCache]: Analyzing trace with hash 1916133496, now seen corresponding path program 1 times [2022-02-15 02:54:02,333 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 02:54:02,333 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1252138833] [2022-02-15 02:54:02,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 02:54:02,412 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 02:54:02,848 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 02:54:03,262 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 02:54:03,303 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 5 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=3, 2=1}, 1={1=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:54:03,405 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 6 AssignedVariables, 1 ReadonlyVariables, Eigenvalues: {0={1=4, 2=1}, 1={1=2}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:54:03,405 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2022-02-15 02:54:03,480 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 02:54:03,480 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2022-02-15 02:54:03,896 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 02:54:03,964 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 02:54:04,393 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 02:54:04,840 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 02:54:04,892 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 5 AssignedVariables, 1 ReadonlyVariables, Eigenvalues: {0={1=3, 2=1}, 1={1=2}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:54:04,957 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 5 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=3, 2=1}, 1={1=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:54:04,957 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2022-02-15 02:54:04,957 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 02:54:04,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:54:05,009 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 02:54:05,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:54:05,012 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 02:54:05,783 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 02:54:05,783 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1252138833] [2022-02-15 02:54:05,783 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1252138833] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 02:54:05,783 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 02:54:05,784 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [31] imperfect sequences [] total 31 [2022-02-15 02:54:05,784 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [67850124] [2022-02-15 02:54:05,784 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 02:54:05,784 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2022-02-15 02:54:05,784 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 02:54:05,786 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2022-02-15 02:54:05,786 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=114, Invalid=878, Unknown=0, NotChecked=0, Total=992 [2022-02-15 02:54:05,786 INFO L87 Difference]: Start difference. First operand 6694 states and 9507 transitions. Second operand has 31 states, 30 states have (on average 5.9) internal successors, (177), 29 states have internal predecessors, (177), 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 02:54:08,818 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 02:54:08,819 INFO L93 Difference]: Finished difference Result 10349 states and 14673 transitions. [2022-02-15 02:54:08,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-02-15 02:54:08,819 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 30 states have (on average 5.9) internal successors, (177), 29 states have internal predecessors, (177), 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 228 [2022-02-15 02:54:08,819 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 02:54:08,828 INFO L225 Difference]: With dead ends: 10349 [2022-02-15 02:54:08,829 INFO L226 Difference]: Without dead ends: 6787 [2022-02-15 02:54:08,833 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 219 GetRequests, 161 SyntacticMatches, 0 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 942 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=376, Invalid=3164, Unknown=0, NotChecked=0, Total=3540 [2022-02-15 02:54:08,833 INFO L933 BasicCegarLoop]: 221 mSDtfsCounter, 587 mSDsluCounter, 82 mSDsCounter, 0 mSdLazyCounter, 4635 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 587 SdHoareTripleChecker+Valid, 303 SdHoareTripleChecker+Invalid, 4683 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 4635 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-02-15 02:54:08,834 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [587 Valid, 303 Invalid, 4683 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 4635 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-02-15 02:54:08,837 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6787 states. [2022-02-15 02:54:09,635 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6787 to 6722. [2022-02-15 02:54:09,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6722 states, 6717 states have (on average 1.4192347774304004) internal successors, (9533), 6717 states have internal predecessors, (9533), 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 02:54:09,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6722 states to 6722 states and 9537 transitions. [2022-02-15 02:54:09,647 INFO L78 Accepts]: Start accepts. Automaton has 6722 states and 9537 transitions. Word has length 228 [2022-02-15 02:54:09,647 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 02:54:09,647 INFO L470 AbstractCegarLoop]: Abstraction has 6722 states and 9537 transitions. [2022-02-15 02:54:09,647 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 30 states have (on average 5.9) internal successors, (177), 29 states have internal predecessors, (177), 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 02:54:09,647 INFO L276 IsEmpty]: Start isEmpty. Operand 6722 states and 9537 transitions. [2022-02-15 02:54:09,650 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 229 [2022-02-15 02:54:09,650 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 02:54:09,650 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 5, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1] [2022-02-15 02:54:09,650 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2022-02-15 02:54:09,650 INFO L402 AbstractCegarLoop]: === Iteration 42 === Targeting ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 02:54:09,650 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 02:54:09,650 INFO L85 PathProgramCache]: Analyzing trace with hash -247930116, now seen corresponding path program 1 times [2022-02-15 02:54:09,650 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 02:54:09,651 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1050349134] [2022-02-15 02:54:09,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 02:54:11,315 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 7 AssignedVariables, 1 ReadonlyVariables, Eigenvalues: {0={1=7}, 1={1=2}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:54:11,315 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-02-15 02:54:11,316 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 02:54:11,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:54:11,354 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 02:54:11,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:54:11,356 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 02:54:11,795 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 02:54:11,795 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1050349134] [2022-02-15 02:54:11,795 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1050349134] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 02:54:11,795 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 02:54:11,795 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-02-15 02:54:11,795 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [32241148] [2022-02-15 02:54:11,795 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 02:54:11,796 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-02-15 02:54:11,796 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 02:54:11,796 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-02-15 02:54:11,796 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=281, Unknown=0, NotChecked=0, Total=380 [2022-02-15 02:54:11,796 INFO L87 Difference]: Start difference. First operand 6722 states and 9537 transitions. Second operand has 20 states, 20 states have (on average 7.25) internal successors, (145), 19 states have internal predecessors, (145), 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 02:54:14,321 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 02:54:14,322 INFO L93 Difference]: Finished difference Result 10464 states and 14792 transitions. [2022-02-15 02:54:14,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-02-15 02:54:14,322 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 7.25) internal successors, (145), 19 states have internal predecessors, (145), 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 228 [2022-02-15 02:54:14,322 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 02:54:14,331 INFO L225 Difference]: With dead ends: 10464 [2022-02-15 02:54:14,331 INFO L226 Difference]: Without dead ends: 6902 [2022-02-15 02:54:14,339 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 215 GetRequests, 180 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 248 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=291, Invalid=1041, Unknown=0, NotChecked=0, Total=1332 [2022-02-15 02:54:14,339 INFO L933 BasicCegarLoop]: 266 mSDtfsCounter, 661 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 3924 mSolverCounterSat, 58 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 661 SdHoareTripleChecker+Valid, 318 SdHoareTripleChecker+Invalid, 3982 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 58 IncrementalHoareTripleChecker+Valid, 3924 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-02-15 02:54:14,339 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [661 Valid, 318 Invalid, 3982 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [58 Valid, 3924 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-02-15 02:54:14,343 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6902 states. [2022-02-15 02:54:15,153 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6902 to 6721. [2022-02-15 02:54:15,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6721 states, 6716 states have (on average 1.4191483025610483) internal successors, (9531), 6716 states have internal predecessors, (9531), 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 02:54:15,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6721 states to 6721 states and 9535 transitions. [2022-02-15 02:54:15,167 INFO L78 Accepts]: Start accepts. Automaton has 6721 states and 9535 transitions. Word has length 228 [2022-02-15 02:54:15,167 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 02:54:15,167 INFO L470 AbstractCegarLoop]: Abstraction has 6721 states and 9535 transitions. [2022-02-15 02:54:15,167 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 7.25) internal successors, (145), 19 states have internal predecessors, (145), 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 02:54:15,167 INFO L276 IsEmpty]: Start isEmpty. Operand 6721 states and 9535 transitions. [2022-02-15 02:54:15,170 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 229 [2022-02-15 02:54:15,170 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 02:54:15,170 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 5, 5, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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 02:54:15,170 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2022-02-15 02:54:15,170 INFO L402 AbstractCegarLoop]: === Iteration 43 === Targeting ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 02:54:15,171 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 02:54:15,171 INFO L85 PathProgramCache]: Analyzing trace with hash 832379130, now seen corresponding path program 1 times [2022-02-15 02:54:15,171 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 02:54:15,171 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [613888097] [2022-02-15 02:54:15,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 02:54:15,617 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 02:54:15,727 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 7 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=7}, 1={1=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:54:15,777 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 5 AssignedVariables, 1 ReadonlyVariables, Eigenvalues: {0={1=3, 2=1}, 1={1=2}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:54:16,199 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 02:54:16,240 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 5 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=3, 2=1}, 1={1=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:54:16,240 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2022-02-15 02:54:16,675 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 02:54:16,676 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-15 02:54:16,676 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-02-15 02:54:17,113 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 02:54:17,137 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 02:54:17,175 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 5 AssignedVariables, 1 ReadonlyVariables, Eigenvalues: {0={1=3, 2=1}, 1={1=2}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:54:17,223 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 5 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=3, 2=1}, 1={1=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:54:17,223 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2022-02-15 02:54:17,328 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 7 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=7}, 1={1=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:54:17,328 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2022-02-15 02:54:17,328 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 02:54:17,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:54:17,418 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 02:54:17,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:54:17,420 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 02:54:17,984 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 02:54:17,985 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [613888097] [2022-02-15 02:54:17,985 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [613888097] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 02:54:17,985 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 02:54:17,985 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [24] imperfect sequences [] total 24 [2022-02-15 02:54:17,985 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1867033785] [2022-02-15 02:54:17,985 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 02:54:17,986 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-02-15 02:54:17,986 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 02:54:17,986 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-02-15 02:54:17,986 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=115, Invalid=535, Unknown=0, NotChecked=0, Total=650 [2022-02-15 02:54:17,987 INFO L87 Difference]: Start difference. First operand 6721 states and 9535 transitions. Second operand has 24 states, 23 states have (on average 6.3478260869565215) internal successors, (146), 22 states have internal predecessors, (146), 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 02:54:20,468 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 02:54:20,469 INFO L93 Difference]: Finished difference Result 10312 states and 14614 transitions. [2022-02-15 02:54:20,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-02-15 02:54:20,469 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 23 states have (on average 6.3478260869565215) internal successors, (146), 22 states have internal predecessors, (146), 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 228 [2022-02-15 02:54:20,471 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 02:54:20,479 INFO L225 Difference]: With dead ends: 10312 [2022-02-15 02:54:20,479 INFO L226 Difference]: Without dead ends: 6751 [2022-02-15 02:54:20,483 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 212 GetRequests, 154 SyntacticMatches, 13 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 729 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=347, Invalid=1815, Unknown=0, NotChecked=0, Total=2162 [2022-02-15 02:54:20,490 INFO L933 BasicCegarLoop]: 327 mSDtfsCounter, 717 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 3185 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 717 SdHoareTripleChecker+Valid, 354 SdHoareTripleChecker+Invalid, 3212 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 3185 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-02-15 02:54:20,490 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [717 Valid, 354 Invalid, 3212 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 3185 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-02-15 02:54:20,493 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6751 states. [2022-02-15 02:54:21,378 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6751 to 6748. [2022-02-15 02:54:21,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6748 states, 6743 states have (on average 1.417766572742103) internal successors, (9560), 6743 states have internal predecessors, (9560), 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 02:54:21,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6748 states to 6748 states and 9564 transitions. [2022-02-15 02:54:21,396 INFO L78 Accepts]: Start accepts. Automaton has 6748 states and 9564 transitions. Word has length 228 [2022-02-15 02:54:21,396 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 02:54:21,397 INFO L470 AbstractCegarLoop]: Abstraction has 6748 states and 9564 transitions. [2022-02-15 02:54:21,398 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 23 states have (on average 6.3478260869565215) internal successors, (146), 22 states have internal predecessors, (146), 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 02:54:21,398 INFO L276 IsEmpty]: Start isEmpty. Operand 6748 states and 9564 transitions. [2022-02-15 02:54:21,400 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 229 [2022-02-15 02:54:21,400 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 02:54:21,401 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 5, 5, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 02:54:21,401 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2022-02-15 02:54:21,401 INFO L402 AbstractCegarLoop]: === Iteration 44 === Targeting ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 02:54:21,401 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 02:54:21,401 INFO L85 PathProgramCache]: Analyzing trace with hash 304985080, now seen corresponding path program 1 times [2022-02-15 02:54:21,401 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 02:54:21,404 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2053248859] [2022-02-15 02:54:21,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 02:54:21,842 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 02:54:21,961 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 7 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=5, 2=1}, 1={1=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:54:22,066 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 6 AssignedVariables, 1 ReadonlyVariables, Eigenvalues: {0={1=6}, 1={1=2}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:54:22,516 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 02:54:22,576 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 5 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=3, 2=1}, 1={1=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:54:22,576 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2022-02-15 02:54:23,003 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 02:54:23,003 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-15 02:54:23,004 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-02-15 02:54:23,433 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 02:54:23,473 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 5 AssignedVariables, 1 ReadonlyVariables, Eigenvalues: {0={1=3, 2=1}, 1={1=2}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:54:23,530 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 5 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=3, 2=1}, 1={1=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:54:23,531 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-15 02:54:23,531 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-02-15 02:54:23,531 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2022-02-15 02:54:23,646 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 7 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=5, 2=1}, 1={1=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:54:23,646 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2022-02-15 02:54:23,647 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 02:54:23,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:54:23,783 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 02:54:23,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:54:23,785 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 02:54:25,026 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 02:54:25,027 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2053248859] [2022-02-15 02:54:25,027 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [2053248859] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 02:54:25,027 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 02:54:25,027 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [32] imperfect sequences [] total 32 [2022-02-15 02:54:25,027 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1825835656] [2022-02-15 02:54:25,027 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 02:54:25,027 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-02-15 02:54:25,027 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 02:54:25,028 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-02-15 02:54:25,028 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=230, Invalid=1030, Unknown=0, NotChecked=0, Total=1260 [2022-02-15 02:54:25,028 INFO L87 Difference]: Start difference. First operand 6748 states and 9564 transitions. Second operand has 32 states, 31 states have (on average 5.709677419354839) internal successors, (177), 30 states have internal predecessors, (177), 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 02:54:28,439 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 02:54:28,439 INFO L93 Difference]: Finished difference Result 10478 states and 14811 transitions. [2022-02-15 02:54:28,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-02-15 02:54:28,439 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 31 states have (on average 5.709677419354839) internal successors, (177), 30 states have internal predecessors, (177), 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 228 [2022-02-15 02:54:28,440 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 02:54:28,449 INFO L225 Difference]: With dead ends: 10478 [2022-02-15 02:54:28,449 INFO L226 Difference]: Without dead ends: 6917 [2022-02-15 02:54:28,454 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 223 GetRequests, 134 SyntacticMatches, 26 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1856 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=620, Invalid=3540, Unknown=0, NotChecked=0, Total=4160 [2022-02-15 02:54:28,456 INFO L933 BasicCegarLoop]: 246 mSDtfsCounter, 1253 mSDsluCounter, 77 mSDsCounter, 0 mSdLazyCounter, 5205 mSolverCounterSat, 96 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1253 SdHoareTripleChecker+Valid, 323 SdHoareTripleChecker+Invalid, 5301 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 96 IncrementalHoareTripleChecker+Valid, 5205 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2022-02-15 02:54:28,456 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1253 Valid, 323 Invalid, 5301 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [96 Valid, 5205 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2022-02-15 02:54:28,459 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6917 states. [2022-02-15 02:54:29,338 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6917 to 6748. [2022-02-15 02:54:29,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6748 states, 6743 states have (on average 1.417766572742103) internal successors, (9560), 6743 states have internal predecessors, (9560), 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 02:54:29,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6748 states to 6748 states and 9564 transitions. [2022-02-15 02:54:29,349 INFO L78 Accepts]: Start accepts. Automaton has 6748 states and 9564 transitions. Word has length 228 [2022-02-15 02:54:29,350 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 02:54:29,350 INFO L470 AbstractCegarLoop]: Abstraction has 6748 states and 9564 transitions. [2022-02-15 02:54:29,350 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 31 states have (on average 5.709677419354839) internal successors, (177), 30 states have internal predecessors, (177), 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 02:54:29,350 INFO L276 IsEmpty]: Start isEmpty. Operand 6748 states and 9564 transitions. [2022-02-15 02:54:29,352 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 230 [2022-02-15 02:54:29,352 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 02:54:29,353 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 5, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 02:54:29,353 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2022-02-15 02:54:29,353 INFO L402 AbstractCegarLoop]: === Iteration 45 === Targeting ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 02:54:29,353 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 02:54:29,353 INFO L85 PathProgramCache]: Analyzing trace with hash 828653154, now seen corresponding path program 1 times [2022-02-15 02:54:29,353 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 02:54:29,353 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [665766655] [2022-02-15 02:54:29,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 02:54:29,786 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 02:54:29,907 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 02:54:29,986 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 5 AssignedVariables, 1 ReadonlyVariables, Eigenvalues: {0={1=3, 2=1}, 1={1=2}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:54:30,415 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 02:54:30,466 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 5 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=3, 2=1}, 1={1=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:54:30,467 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2022-02-15 02:54:30,924 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 02:54:31,356 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 02:54:31,381 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 6 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=5}, 1={1=2}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:54:31,422 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 5 AssignedVariables, 1 ReadonlyVariables, Eigenvalues: {0={1=3, 2=1}, 1={1=2}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:54:31,422 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-15 02:54:31,422 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-02-15 02:54:31,482 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 5 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=3, 2=1}, 1={1=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:54:31,482 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2022-02-15 02:54:31,599 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 7 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=5, 2=1}, 1={1=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:54:31,599 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2022-02-15 02:54:31,599 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 02:54:31,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:54:31,673 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 02:54:31,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:54:31,675 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 02:54:32,328 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 02:54:32,329 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [665766655] [2022-02-15 02:54:32,329 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [665766655] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 02:54:32,329 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 02:54:32,329 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [27] imperfect sequences [] total 27 [2022-02-15 02:54:32,329 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [347291132] [2022-02-15 02:54:32,329 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 02:54:32,329 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-02-15 02:54:32,330 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 02:54:32,330 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-02-15 02:54:32,330 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=154, Invalid=602, Unknown=0, NotChecked=0, Total=756 [2022-02-15 02:54:32,330 INFO L87 Difference]: Start difference. First operand 6748 states and 9564 transitions. Second operand has 27 states, 26 states have (on average 5.653846153846154) internal successors, (147), 25 states have internal predecessors, (147), 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 02:54:35,094 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 02:54:35,094 INFO L93 Difference]: Finished difference Result 11410 states and 15948 transitions. [2022-02-15 02:54:35,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-02-15 02:54:35,095 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 26 states have (on average 5.653846153846154) internal successors, (147), 25 states have internal predecessors, (147), 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 229 [2022-02-15 02:54:35,095 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 02:54:35,105 INFO L225 Difference]: With dead ends: 11410 [2022-02-15 02:54:35,105 INFO L226 Difference]: Without dead ends: 7849 [2022-02-15 02:54:35,110 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 221 GetRequests, 158 SyntacticMatches, 12 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 959 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=500, Invalid=2256, Unknown=0, NotChecked=0, Total=2756 [2022-02-15 02:54:35,111 INFO L933 BasicCegarLoop]: 209 mSDtfsCounter, 1061 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 3163 mSolverCounterSat, 91 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1061 SdHoareTripleChecker+Valid, 231 SdHoareTripleChecker+Invalid, 3254 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 91 IncrementalHoareTripleChecker+Valid, 3163 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-02-15 02:54:35,112 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1061 Valid, 231 Invalid, 3254 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [91 Valid, 3163 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-02-15 02:54:35,116 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7849 states. [2022-02-15 02:54:36,014 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7849 to 6752. [2022-02-15 02:54:36,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6752 states, 6747 states have (on average 1.4175188972876833) internal successors, (9564), 6747 states have internal predecessors, (9564), 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 02:54:36,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6752 states to 6752 states and 9568 transitions. [2022-02-15 02:54:36,027 INFO L78 Accepts]: Start accepts. Automaton has 6752 states and 9568 transitions. Word has length 229 [2022-02-15 02:54:36,027 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 02:54:36,027 INFO L470 AbstractCegarLoop]: Abstraction has 6752 states and 9568 transitions. [2022-02-15 02:54:36,027 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 26 states have (on average 5.653846153846154) internal successors, (147), 25 states have internal predecessors, (147), 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 02:54:36,028 INFO L276 IsEmpty]: Start isEmpty. Operand 6752 states and 9568 transitions. [2022-02-15 02:54:36,030 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 230 [2022-02-15 02:54:36,030 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 02:54:36,030 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 4, 4, 3, 3, 3, 3, 3, 3, 3, 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] [2022-02-15 02:54:36,030 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2022-02-15 02:54:36,031 INFO L402 AbstractCegarLoop]: === Iteration 46 === Targeting ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 02:54:36,031 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 02:54:36,031 INFO L85 PathProgramCache]: Analyzing trace with hash -289282389, now seen corresponding path program 1 times [2022-02-15 02:54:36,031 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 02:54:36,031 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1096697503] [2022-02-15 02:54:36,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 02:54:37,018 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-15 02:54:37,018 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-02-15 02:54:37,018 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 02:54:37,020 INFO L274 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-15 02:54:37,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:54:37,078 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 02:54:37,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:54:37,081 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 02:54:37,081 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 02:54:37,081 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1096697503] [2022-02-15 02:54:37,081 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1096697503] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 02:54:37,081 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 02:54:37,081 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-02-15 02:54:37,081 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1238163923] [2022-02-15 02:54:37,081 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 02:54:37,081 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-02-15 02:54:37,081 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 02:54:37,082 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-02-15 02:54:37,082 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-02-15 02:54:37,082 INFO L87 Difference]: Start difference. First operand 6752 states and 9568 transitions. Second operand has 4 states, 4 states have (on average 29.5) internal successors, (118), 3 states have internal predecessors, (118), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 02:54:38,267 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 02:54:38,267 INFO L93 Difference]: Finished difference Result 14080 states and 20198 transitions. [2022-02-15 02:54:38,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-02-15 02:54:38,267 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 29.5) internal successors, (118), 3 states have internal predecessors, (118), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 229 [2022-02-15 02:54:38,267 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 02:54:38,277 INFO L225 Difference]: With dead ends: 14080 [2022-02-15 02:54:38,278 INFO L226 Difference]: Without dead ends: 7369 [2022-02-15 02:54:38,293 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 02:54:38,293 INFO L933 BasicCegarLoop]: 189 mSDtfsCounter, 336 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 176 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 336 SdHoareTripleChecker+Valid, 196 SdHoareTripleChecker+Invalid, 223 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 176 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-15 02:54:38,293 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [336 Valid, 196 Invalid, 223 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 176 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-15 02:54:38,298 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7369 states. [2022-02-15 02:54:39,239 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7369 to 7051. [2022-02-15 02:54:39,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7051 states, 7046 states have (on average 1.3137950610275333) internal successors, (9257), 7046 states have internal predecessors, (9257), 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 02:54:39,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7051 states to 7051 states and 9261 transitions. [2022-02-15 02:54:39,251 INFO L78 Accepts]: Start accepts. Automaton has 7051 states and 9261 transitions. Word has length 229 [2022-02-15 02:54:39,251 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 02:54:39,251 INFO L470 AbstractCegarLoop]: Abstraction has 7051 states and 9261 transitions. [2022-02-15 02:54:39,251 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 29.5) internal successors, (118), 3 states have internal predecessors, (118), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 02:54:39,251 INFO L276 IsEmpty]: Start isEmpty. Operand 7051 states and 9261 transitions. [2022-02-15 02:54:39,254 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 239 [2022-02-15 02:54:39,254 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 02:54:39,254 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 6, 6, 5, 5, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 02:54:39,254 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2022-02-15 02:54:39,254 INFO L402 AbstractCegarLoop]: === Iteration 47 === Targeting ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 02:54:39,254 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 02:54:39,254 INFO L85 PathProgramCache]: Analyzing trace with hash -2082178744, now seen corresponding path program 1 times [2022-02-15 02:54:39,254 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 02:54:39,254 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [166115742] [2022-02-15 02:54:39,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 02:55:14,684 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 8 AssignedVariables, 2 ReadonlyVariables, Eigenvalues: {0={1=6, 2=1}, 1={1=3}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:55:15,092 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 02:55:15,503 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 02:55:15,553 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 02:55:15,574 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 4 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=2, 2=1}, 1={1=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:55:15,611 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 5 AssignedVariables, 1 ReadonlyVariables, Eigenvalues: {0={1=3, 2=1}, 1={1=2}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:55:15,611 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2022-02-15 02:55:15,987 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 7 AssignedVariables, 1 ReadonlyVariables, Eigenvalues: {0={1=7}, 1={1=2}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:55:15,987 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2022-02-15 02:55:16,397 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 02:55:16,797 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 02:55:16,850 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 02:55:16,887 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 5 AssignedVariables, 1 ReadonlyVariables, Eigenvalues: {0={1=3, 2=1}, 1={1=2}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:55:17,295 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 02:55:52,946 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 8 AssignedVariables, 2 ReadonlyVariables, Eigenvalues: {0={1=6, 2=1}, 1={1=3}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:55:52,972 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 4 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=2, 2=1}, 1={1=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:55:52,972 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2022-02-15 02:55:52,972 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 02:55:52,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:55:53,061 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 02:55:53,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:55:53,063 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 02:55:54,143 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 02:55:54,143 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [166115742] [2022-02-15 02:55:54,144 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [166115742] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 02:55:54,144 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 02:55:54,144 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [35] imperfect sequences [] total 35 [2022-02-15 02:55:54,144 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [886200908] [2022-02-15 02:55:54,144 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 02:55:54,144 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2022-02-15 02:55:54,144 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 02:55:54,144 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2022-02-15 02:55:54,145 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=146, Invalid=1186, Unknown=0, NotChecked=0, Total=1332 [2022-02-15 02:55:54,145 INFO L87 Difference]: Start difference. First operand 7051 states and 9261 transitions. Second operand has 35 states, 34 states have (on average 6.382352941176471) internal successors, (217), 33 states have internal predecessors, (217), 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 02:55:58,283 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 02:55:58,283 INFO L93 Difference]: Finished difference Result 14022 states and 18445 transitions. [2022-02-15 02:55:58,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-02-15 02:55:58,284 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 34 states have (on average 6.382352941176471) internal successors, (217), 33 states have internal predecessors, (217), 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 238 [2022-02-15 02:55:58,284 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 02:55:58,293 INFO L225 Difference]: With dead ends: 14022 [2022-02-15 02:55:58,293 INFO L226 Difference]: Without dead ends: 7120 [2022-02-15 02:55:58,301 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 233 GetRequests, 166 SyntacticMatches, 0 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1245 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=460, Invalid=4232, Unknown=0, NotChecked=0, Total=4692 [2022-02-15 02:55:58,302 INFO L933 BasicCegarLoop]: 179 mSDtfsCounter, 1139 mSDsluCounter, 107 mSDsCounter, 0 mSdLazyCounter, 6647 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1139 SdHoareTripleChecker+Valid, 286 SdHoareTripleChecker+Invalid, 6687 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 6647 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2022-02-15 02:55:58,304 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1139 Valid, 286 Invalid, 6687 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 6647 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2022-02-15 02:55:58,307 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7120 states. [2022-02-15 02:55:59,239 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7120 to 7102. [2022-02-15 02:55:59,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7102 states, 7097 states have (on average 1.3116809919684373) internal successors, (9309), 7097 states have internal predecessors, (9309), 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 02:55:59,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7102 states to 7102 states and 9313 transitions. [2022-02-15 02:55:59,251 INFO L78 Accepts]: Start accepts. Automaton has 7102 states and 9313 transitions. Word has length 238 [2022-02-15 02:55:59,251 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 02:55:59,251 INFO L470 AbstractCegarLoop]: Abstraction has 7102 states and 9313 transitions. [2022-02-15 02:55:59,251 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 34 states have (on average 6.382352941176471) internal successors, (217), 33 states have internal predecessors, (217), 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 02:55:59,251 INFO L276 IsEmpty]: Start isEmpty. Operand 7102 states and 9313 transitions. [2022-02-15 02:55:59,254 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 240 [2022-02-15 02:55:59,254 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 02:55:59,254 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 6, 6, 5, 5, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 02:55:59,254 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2022-02-15 02:55:59,254 INFO L402 AbstractCegarLoop]: === Iteration 48 === Targeting ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 02:55:59,254 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 02:55:59,255 INFO L85 PathProgramCache]: Analyzing trace with hash -1618108680, now seen corresponding path program 1 times [2022-02-15 02:55:59,255 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 02:55:59,255 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [870585436] [2022-02-15 02:55:59,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 02:55:59,695 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 02:56:35,626 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 8 AssignedVariables, 2 ReadonlyVariables, Eigenvalues: {0={1=6, 2=1}, 1={1=3}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:56:36,070 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 02:56:36,127 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 02:56:36,175 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 4 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=2, 2=1}, 1={1=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:56:36,221 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 5 AssignedVariables, 1 ReadonlyVariables, Eigenvalues: {0={1=3, 2=1}, 1={1=2}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:56:36,221 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2022-02-15 02:56:36,221 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-15 02:56:36,221 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-02-15 02:56:36,222 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2022-02-15 02:57:11,780 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 8 AssignedVariables, 2 ReadonlyVariables, Eigenvalues: {0={1=6, 2=1}, 1={1=3}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:57:12,190 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 02:57:12,593 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 02:57:12,645 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 02:57:12,684 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 5 AssignedVariables, 1 ReadonlyVariables, Eigenvalues: {0={1=3, 2=1}, 1={1=2}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:57:13,161 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 02:57:13,184 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 4 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=2, 2=1}, 1={1=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:57:13,184 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2022-02-15 02:57:13,184 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 02:57:13,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:57:13,240 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 02:57:13,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:57:13,242 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 02:57:14,711 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 02:57:14,712 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [870585436] [2022-02-15 02:57:14,712 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [870585436] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 02:57:14,712 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 02:57:14,712 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [40] imperfect sequences [] total 40 [2022-02-15 02:57:14,712 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1196350292] [2022-02-15 02:57:14,712 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 02:57:14,712 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2022-02-15 02:57:14,712 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 02:57:14,713 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2022-02-15 02:57:14,713 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=213, Invalid=1427, Unknown=0, NotChecked=0, Total=1640 [2022-02-15 02:57:14,713 INFO L87 Difference]: Start difference. First operand 7102 states and 9313 transitions. Second operand has 40 states, 40 states have (on average 5.45) internal successors, (218), 39 states have internal predecessors, (218), 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 02:57:19,518 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 02:57:19,519 INFO L93 Difference]: Finished difference Result 14071 states and 18495 transitions. [2022-02-15 02:57:19,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2022-02-15 02:57:19,519 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 40 states have (on average 5.45) internal successors, (218), 39 states have internal predecessors, (218), 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 239 [2022-02-15 02:57:19,519 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 02:57:19,528 INFO L225 Difference]: With dead ends: 14071 [2022-02-15 02:57:19,528 INFO L226 Difference]: Without dead ends: 7169 [2022-02-15 02:57:19,536 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 237 GetRequests, 161 SyntacticMatches, 0 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1775 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=609, Invalid=5397, Unknown=0, NotChecked=0, Total=6006 [2022-02-15 02:57:19,536 INFO L933 BasicCegarLoop]: 199 mSDtfsCounter, 671 mSDsluCounter, 77 mSDsCounter, 0 mSdLazyCounter, 8046 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 671 SdHoareTripleChecker+Valid, 276 SdHoareTripleChecker+Invalid, 8076 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 8046 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2022-02-15 02:57:19,537 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [671 Valid, 276 Invalid, 8076 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 8046 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2022-02-15 02:57:19,540 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7169 states. [2022-02-15 02:57:20,454 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7169 to 7102. [2022-02-15 02:57:20,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7102 states, 7097 states have (on average 1.3116809919684373) internal successors, (9309), 7097 states have internal predecessors, (9309), 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 02:57:20,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7102 states to 7102 states and 9313 transitions. [2022-02-15 02:57:20,467 INFO L78 Accepts]: Start accepts. Automaton has 7102 states and 9313 transitions. Word has length 239 [2022-02-15 02:57:20,467 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 02:57:20,468 INFO L470 AbstractCegarLoop]: Abstraction has 7102 states and 9313 transitions. [2022-02-15 02:57:20,468 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 40 states have (on average 5.45) internal successors, (218), 39 states have internal predecessors, (218), 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 02:57:20,468 INFO L276 IsEmpty]: Start isEmpty. Operand 7102 states and 9313 transitions. [2022-02-15 02:57:20,470 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 240 [2022-02-15 02:57:20,471 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 02:57:20,471 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 6, 6, 5, 5, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 02:57:20,471 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2022-02-15 02:57:20,471 INFO L402 AbstractCegarLoop]: === Iteration 49 === Targeting ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 02:57:20,471 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 02:57:20,471 INFO L85 PathProgramCache]: Analyzing trace with hash -1966319664, now seen corresponding path program 1 times [2022-02-15 02:57:20,471 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 02:57:20,471 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1108598915] [2022-02-15 02:57:20,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 02:57:55,707 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 8 AssignedVariables, 2 ReadonlyVariables, Eigenvalues: {0={1=6, 2=1}, 1={1=3}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:57:55,803 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 6 AssignedVariables, 1 ReadonlyVariables, Eigenvalues: {0={1=4, 2=1}, 1={1=2}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:57:56,215 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 02:57:56,627 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 02:57:56,684 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 02:57:56,712 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 4 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=2, 2=1}, 1={1=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:57:56,712 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2022-02-15 02:57:56,712 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-15 02:57:56,713 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-02-15 02:57:56,713 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2022-02-15 02:57:57,128 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 02:57:57,535 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 02:57:57,592 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 02:57:57,999 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 02:58:33,064 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 8 AssignedVariables, 2 ReadonlyVariables, Eigenvalues: {0={1=6, 2=1}, 1={1=3}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:58:33,162 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 6 AssignedVariables, 1 ReadonlyVariables, Eigenvalues: {0={1=4, 2=1}, 1={1=2}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:58:33,190 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 4 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=2, 2=1}, 1={1=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:58:33,190 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2022-02-15 02:58:33,190 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 02:58:33,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:58:33,276 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 02:58:33,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:58:33,279 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 02:58:34,490 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 02:58:34,491 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1108598915] [2022-02-15 02:58:34,491 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1108598915] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 02:58:34,491 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 02:58:34,491 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [35] imperfect sequences [] total 35 [2022-02-15 02:58:34,491 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2049574902] [2022-02-15 02:58:34,491 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 02:58:34,491 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2022-02-15 02:58:34,491 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 02:58:34,492 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2022-02-15 02:58:34,492 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=173, Invalid=1233, Unknown=0, NotChecked=0, Total=1406 [2022-02-15 02:58:34,492 INFO L87 Difference]: Start difference. First operand 7102 states and 9313 transitions. Second operand has 35 states, 34 states have (on average 6.411764705882353) internal successors, (218), 33 states have internal predecessors, (218), 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 02:58:38,155 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 02:58:38,156 INFO L93 Difference]: Finished difference Result 14092 states and 18514 transitions. [2022-02-15 02:58:38,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-02-15 02:58:38,156 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 34 states have (on average 6.411764705882353) internal successors, (218), 33 states have internal predecessors, (218), 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 239 [2022-02-15 02:58:38,156 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 02:58:38,167 INFO L225 Difference]: With dead ends: 14092 [2022-02-15 02:58:38,168 INFO L226 Difference]: Without dead ends: 7190 [2022-02-15 02:58:38,177 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 234 GetRequests, 166 SyntacticMatches, 0 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1410 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=512, Invalid=4318, Unknown=0, NotChecked=0, Total=4830 [2022-02-15 02:58:38,177 INFO L933 BasicCegarLoop]: 206 mSDtfsCounter, 1041 mSDsluCounter, 67 mSDsCounter, 0 mSdLazyCounter, 7053 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1041 SdHoareTripleChecker+Valid, 273 SdHoareTripleChecker+Invalid, 7095 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 7053 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2022-02-15 02:58:38,177 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1041 Valid, 273 Invalid, 7095 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 7053 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2022-02-15 02:58:38,182 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7190 states. [2022-02-15 02:58:39,116 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7190 to 7126. [2022-02-15 02:58:39,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7126 states, 7121 states have (on average 1.310770959134953) internal successors, (9334), 7121 states have internal predecessors, (9334), 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 02:58:39,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7126 states to 7126 states and 9338 transitions. [2022-02-15 02:58:39,131 INFO L78 Accepts]: Start accepts. Automaton has 7126 states and 9338 transitions. Word has length 239 [2022-02-15 02:58:39,131 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 02:58:39,131 INFO L470 AbstractCegarLoop]: Abstraction has 7126 states and 9338 transitions. [2022-02-15 02:58:39,131 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 34 states have (on average 6.411764705882353) internal successors, (218), 33 states have internal predecessors, (218), 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 02:58:39,131 INFO L276 IsEmpty]: Start isEmpty. Operand 7126 states and 9338 transitions. [2022-02-15 02:58:39,134 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 240 [2022-02-15 02:58:39,134 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 02:58:39,134 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 6, 6, 5, 5, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 02:58:39,135 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2022-02-15 02:58:39,135 INFO L402 AbstractCegarLoop]: === Iteration 50 === Targeting ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 02:58:39,135 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 02:58:39,135 INFO L85 PathProgramCache]: Analyzing trace with hash -1580457262, now seen corresponding path program 1 times [2022-02-15 02:58:39,135 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 02:58:39,135 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1965682097] [2022-02-15 02:58:39,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 02:58:39,237 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 6 AssignedVariables, 1 ReadonlyVariables, Eigenvalues: {0={1=4, 2=1}, 1={1=2}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:58:39,696 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 02:58:39,717 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 9 HavocedVariables, 0 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={1=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:58:40,223 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 02:58:40,276 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 02:58:40,299 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 4 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=2, 2=1}, 1={1=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:58:40,299 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2022-02-15 02:58:40,300 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-15 02:58:40,300 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-02-15 02:58:40,301 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2022-02-15 02:58:40,707 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 02:58:41,138 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 02:58:41,148 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 9 HavocedVariables, 0 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={1=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:58:41,198 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 02:58:41,616 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 02:58:41,713 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 6 AssignedVariables, 1 ReadonlyVariables, Eigenvalues: {0={1=4, 2=1}, 1={1=2}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:58:41,739 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 4 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=2, 2=1}, 1={1=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:58:41,740 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2022-02-15 02:58:41,740 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 02:58:41,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:58:41,804 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 02:58:41,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:58:41,806 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 02:58:42,466 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 02:58:42,466 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1965682097] [2022-02-15 02:58:42,466 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1965682097] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 02:58:42,467 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 02:58:42,467 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [30] imperfect sequences [] total 30 [2022-02-15 02:58:42,467 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1051227631] [2022-02-15 02:58:42,467 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 02:58:42,467 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2022-02-15 02:58:42,467 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 02:58:42,467 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2022-02-15 02:58:42,468 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=179, Invalid=813, Unknown=0, NotChecked=0, Total=992 [2022-02-15 02:58:42,468 INFO L87 Difference]: Start difference. First operand 7126 states and 9338 transitions. Second operand has 30 states, 29 states have (on average 5.9655172413793105) internal successors, (173), 28 states have internal predecessors, (173), 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 02:58:45,755 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 02:58:45,756 INFO L93 Difference]: Finished difference Result 15638 states and 20557 transitions. [2022-02-15 02:58:45,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-02-15 02:58:45,756 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 29 states have (on average 5.9655172413793105) internal successors, (173), 28 states have internal predecessors, (173), 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 239 [2022-02-15 02:58:45,756 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 02:58:45,766 INFO L225 Difference]: With dead ends: 15638 [2022-02-15 02:58:45,766 INFO L226 Difference]: Without dead ends: 8540 [2022-02-15 02:58:45,772 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 235 GetRequests, 178 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1050 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=530, Invalid=2892, Unknown=0, NotChecked=0, Total=3422 [2022-02-15 02:58:45,773 INFO L933 BasicCegarLoop]: 201 mSDtfsCounter, 973 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 4245 mSolverCounterSat, 108 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 973 SdHoareTripleChecker+Valid, 258 SdHoareTripleChecker+Invalid, 4353 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 108 IncrementalHoareTripleChecker+Valid, 4245 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-02-15 02:58:45,773 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [973 Valid, 258 Invalid, 4353 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [108 Valid, 4245 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-02-15 02:58:45,778 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8540 states. [2022-02-15 02:58:46,738 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8540 to 7572. [2022-02-15 02:58:46,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7572 states, 7567 states have (on average 1.2982687987313335) internal successors, (9824), 7567 states have internal predecessors, (9824), 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 02:58:46,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7572 states to 7572 states and 9828 transitions. [2022-02-15 02:58:46,752 INFO L78 Accepts]: Start accepts. Automaton has 7572 states and 9828 transitions. Word has length 239 [2022-02-15 02:58:46,752 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 02:58:46,752 INFO L470 AbstractCegarLoop]: Abstraction has 7572 states and 9828 transitions. [2022-02-15 02:58:46,752 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 29 states have (on average 5.9655172413793105) internal successors, (173), 28 states have internal predecessors, (173), 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 02:58:46,752 INFO L276 IsEmpty]: Start isEmpty. Operand 7572 states and 9828 transitions. [2022-02-15 02:58:46,755 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 260 [2022-02-15 02:58:46,755 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 02:58:46,755 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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] [2022-02-15 02:58:46,755 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2022-02-15 02:58:46,755 INFO L402 AbstractCegarLoop]: === Iteration 51 === Targeting ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 02:58:46,755 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 02:58:46,756 INFO L85 PathProgramCache]: Analyzing trace with hash 801124647, now seen corresponding path program 1 times [2022-02-15 02:58:46,756 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 02:58:46,756 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [618655062] [2022-02-15 02:58:46,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 02:58:46,876 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 7 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=7}, 1={1=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:58:46,986 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 7 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=7}, 1={1=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:58:47,425 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 02:58:47,426 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-15 02:58:47,426 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-02-15 02:58:47,456 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 3 AssignedVariables, 1 ReadonlyVariables, Eigenvalues: {0={1=1, 2=1}, 1={1=2}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:58:47,456 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2022-02-15 02:58:47,485 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 3 AssignedVariables, 1 ReadonlyVariables, Eigenvalues: {0={1=1, 2=1}, 1={1=2}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:58:47,486 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-15 02:58:47,486 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-02-15 02:58:50,845 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 9 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=7, 2=1}, 1={1=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:58:51,263 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 02:58:51,263 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-15 02:58:51,263 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-02-15 02:58:51,340 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 02:58:51,341 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2022-02-15 02:58:51,473 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 7 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=7}, 1={1=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:58:54,843 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 8 AssignedVariables, 1 ReadonlyVariables, Eigenvalues: {0={1=6, 2=1}, 1={1=2}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:58:54,843 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2022-02-15 02:58:54,844 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 02:58:54,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:58:54,995 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 02:58:54,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:58:54,998 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 02:58:57,171 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 02:58:57,171 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [618655062] [2022-02-15 02:58:57,171 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [618655062] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 02:58:57,171 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 02:58:57,172 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [33] imperfect sequences [] total 33 [2022-02-15 02:58:57,172 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1334872801] [2022-02-15 02:58:57,172 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 02:58:57,172 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-02-15 02:58:57,172 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 02:58:57,172 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-02-15 02:58:57,172 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=160, Invalid=1100, Unknown=0, NotChecked=0, Total=1260 [2022-02-15 02:58:57,172 INFO L87 Difference]: Start difference. First operand 7572 states and 9828 transitions. Second operand has 33 states, 32 states have (on average 6.9375) internal successors, (222), 31 states have internal predecessors, (222), 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 02:59:00,633 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 02:59:00,633 INFO L93 Difference]: Finished difference Result 11918 states and 15433 transitions. [2022-02-15 02:59:00,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2022-02-15 02:59:00,634 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 32 states have (on average 6.9375) internal successors, (222), 31 states have internal predecessors, (222), 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 259 [2022-02-15 02:59:00,634 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 02:59:00,643 INFO L225 Difference]: With dead ends: 11918 [2022-02-15 02:59:00,643 INFO L226 Difference]: Without dead ends: 7945 [2022-02-15 02:59:00,647 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 259 GetRequests, 114 SyntacticMatches, 78 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2936 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=526, Invalid=4166, Unknown=0, NotChecked=0, Total=4692 [2022-02-15 02:59:00,647 INFO L933 BasicCegarLoop]: 215 mSDtfsCounter, 1479 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 5946 mSolverCounterSat, 82 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1479 SdHoareTripleChecker+Valid, 267 SdHoareTripleChecker+Invalid, 6028 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 82 IncrementalHoareTripleChecker+Valid, 5946 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-02-15 02:59:00,647 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1479 Valid, 267 Invalid, 6028 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [82 Valid, 5946 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-02-15 02:59:00,650 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7945 states. [2022-02-15 02:59:01,675 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7945 to 7706. [2022-02-15 02:59:01,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7706 states, 7701 states have (on average 1.293987793793014) internal successors, (9965), 7701 states have internal predecessors, (9965), 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 02:59:01,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7706 states to 7706 states and 9969 transitions. [2022-02-15 02:59:01,690 INFO L78 Accepts]: Start accepts. Automaton has 7706 states and 9969 transitions. Word has length 259 [2022-02-15 02:59:01,690 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 02:59:01,690 INFO L470 AbstractCegarLoop]: Abstraction has 7706 states and 9969 transitions. [2022-02-15 02:59:01,690 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 32 states have (on average 6.9375) internal successors, (222), 31 states have internal predecessors, (222), 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 02:59:01,690 INFO L276 IsEmpty]: Start isEmpty. Operand 7706 states and 9969 transitions. [2022-02-15 02:59:01,693 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 261 [2022-02-15 02:59:01,693 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 02:59:01,693 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 02:59:01,693 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2022-02-15 02:59:01,693 INFO L402 AbstractCegarLoop]: === Iteration 52 === Targeting ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 02:59:01,694 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 02:59:01,694 INFO L85 PathProgramCache]: Analyzing trace with hash -72721787, now seen corresponding path program 1 times [2022-02-15 02:59:01,694 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 02:59:01,694 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1138241100] [2022-02-15 02:59:01,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 02:59:01,815 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 7 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=7}, 1={1=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:59:01,926 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 7 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=7}, 1={1=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:59:02,369 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 02:59:05,750 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 8 AssignedVariables, 1 ReadonlyVariables, Eigenvalues: {0={1=8}, 1={1=2}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:59:05,786 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 4 AssignedVariables, 1 ReadonlyVariables, Eigenvalues: {0={1=2, 2=1}, 1={1=2}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:59:05,787 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2022-02-15 02:59:05,816 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 3 AssignedVariables, 1 ReadonlyVariables, Eigenvalues: {0={1=1, 2=1}, 1={1=2}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:59:09,236 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 8 AssignedVariables, 1 ReadonlyVariables, Eigenvalues: {0={1=6, 2=1}, 1={1=2}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:59:09,237 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-15 02:59:09,237 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-02-15 02:59:09,664 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 02:59:09,809 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 7 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=5, 2=1}, 1={1=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:59:09,918 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 7 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=5, 2=1}, 1={1=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:59:09,919 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2022-02-15 02:59:10,026 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 7 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=5, 2=1}, 1={1=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:59:13,413 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 8 AssignedVariables, 1 ReadonlyVariables, Eigenvalues: {0={1=6, 2=1}, 1={1=2}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:59:13,518 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 7 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=5, 2=1}, 1={1=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:59:13,519 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2022-02-15 02:59:13,519 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 02:59:13,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:59:13,638 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 02:59:13,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:59:13,641 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 02:59:16,582 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 02:59:16,582 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1138241100] [2022-02-15 02:59:16,582 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1138241100] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 02:59:16,582 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 02:59:16,582 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [38] imperfect sequences [] total 38 [2022-02-15 02:59:16,582 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1980965031] [2022-02-15 02:59:16,582 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 02:59:16,583 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2022-02-15 02:59:16,583 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 02:59:16,583 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2022-02-15 02:59:16,583 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=205, Invalid=1517, Unknown=0, NotChecked=0, Total=1722 [2022-02-15 02:59:16,583 INFO L87 Difference]: Start difference. First operand 7706 states and 9969 transitions. Second operand has 38 states, 37 states have (on average 6.891891891891892) internal successors, (255), 36 states have internal predecessors, (255), 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 02:59:21,225 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 02:59:21,225 INFO L93 Difference]: Finished difference Result 12432 states and 16090 transitions. [2022-02-15 02:59:21,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-02-15 02:59:21,226 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 37 states have (on average 6.891891891891892) internal successors, (255), 36 states have internal predecessors, (255), 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 260 [2022-02-15 02:59:21,226 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 02:59:21,237 INFO L225 Difference]: With dead ends: 12432 [2022-02-15 02:59:21,238 INFO L226 Difference]: Without dead ends: 7945 [2022-02-15 02:59:21,246 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 262 GetRequests, 88 SyntacticMatches, 99 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3980 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=586, Invalid=5266, Unknown=0, NotChecked=0, Total=5852 [2022-02-15 02:59:21,247 INFO L933 BasicCegarLoop]: 311 mSDtfsCounter, 1107 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 10768 mSolverCounterSat, 123 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1107 SdHoareTripleChecker+Valid, 363 SdHoareTripleChecker+Invalid, 10891 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 123 IncrementalHoareTripleChecker+Valid, 10768 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2022-02-15 02:59:21,247 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1107 Valid, 363 Invalid, 10891 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [123 Valid, 10768 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2022-02-15 02:59:21,252 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7945 states. [2022-02-15 02:59:22,317 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7945 to 7878. [2022-02-15 02:59:22,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7878 states, 7873 states have (on average 1.2921376857614633) internal successors, (10173), 7873 states have internal predecessors, (10173), 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 02:59:22,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7878 states to 7878 states and 10177 transitions. [2022-02-15 02:59:22,330 INFO L78 Accepts]: Start accepts. Automaton has 7878 states and 10177 transitions. Word has length 260 [2022-02-15 02:59:22,330 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 02:59:22,330 INFO L470 AbstractCegarLoop]: Abstraction has 7878 states and 10177 transitions. [2022-02-15 02:59:22,330 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 37 states have (on average 6.891891891891892) internal successors, (255), 36 states have internal predecessors, (255), 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 02:59:22,331 INFO L276 IsEmpty]: Start isEmpty. Operand 7878 states and 10177 transitions. [2022-02-15 02:59:22,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 262 [2022-02-15 02:59:22,333 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 02:59:22,333 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 02:59:22,333 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2022-02-15 02:59:22,333 INFO L402 AbstractCegarLoop]: === Iteration 53 === Targeting ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 02:59:22,334 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 02:59:22,334 INFO L85 PathProgramCache]: Analyzing trace with hash 1459094179, now seen corresponding path program 2 times [2022-02-15 02:59:22,334 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 02:59:22,334 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1757691222] [2022-02-15 02:59:22,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 02:59:22,455 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 7 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=7}, 1={1=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:59:22,583 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 7 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=5, 2=1}, 1={1=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:59:25,993 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 8 AssignedVariables, 1 ReadonlyVariables, Eigenvalues: {0={1=8}, 1={1=2}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:59:25,994 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-15 02:59:25,994 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-02-15 02:59:26,031 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 4 AssignedVariables, 1 ReadonlyVariables, Eigenvalues: {0={1=2, 2=1}, 1={1=2}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:59:26,031 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2022-02-15 02:59:26,032 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-15 02:59:26,032 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-02-15 02:59:26,032 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-15 02:59:26,032 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-02-15 02:59:26,032 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-15 02:59:26,032 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-02-15 02:59:26,467 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 02:59:26,621 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 7 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=5, 2=1}, 1={1=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:59:26,622 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-15 02:59:26,622 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-02-15 02:59:26,622 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2022-02-15 02:59:26,655 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 4 AssignedVariables, 1 ReadonlyVariables, Eigenvalues: {0={1=2, 2=1}, 1={1=2}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:59:26,760 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 7 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=5, 2=1}, 1={1=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:59:30,108 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 8 AssignedVariables, 1 ReadonlyVariables, Eigenvalues: {0={1=8}, 1={1=2}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:59:30,214 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 7 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=7}, 1={1=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:59:30,214 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2022-02-15 02:59:30,215 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 02:59:30,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:59:30,290 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 02:59:30,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:59:30,293 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 02:59:34,998 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 02:59:34,999 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1757691222] [2022-02-15 02:59:34,999 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1757691222] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 02:59:34,999 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 02:59:34,999 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [40] imperfect sequences [] total 40 [2022-02-15 02:59:34,999 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [770079636] [2022-02-15 02:59:34,999 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 02:59:34,999 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2022-02-15 02:59:34,999 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 02:59:35,000 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2022-02-15 02:59:35,000 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=204, Invalid=1518, Unknown=0, NotChecked=0, Total=1722 [2022-02-15 02:59:35,000 INFO L87 Difference]: Start difference. First operand 7878 states and 10177 transitions. Second operand has 40 states, 39 states have (on average 6.589743589743589) internal successors, (257), 38 states have internal predecessors, (257), 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 02:59:40,646 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 02:59:40,646 INFO L93 Difference]: Finished difference Result 16893 states and 22037 transitions. [2022-02-15 02:59:40,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2022-02-15 02:59:40,647 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 39 states have (on average 6.589743589743589) internal successors, (257), 38 states have internal predecessors, (257), 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 261 [2022-02-15 02:59:40,647 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 02:59:40,663 INFO L225 Difference]: With dead ends: 16893 [2022-02-15 02:59:40,664 INFO L226 Difference]: Without dead ends: 12782 [2022-02-15 02:59:40,670 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 267 GetRequests, 58 SyntacticMatches, 129 SemanticMatches, 80 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4385 ImplicationChecksByTransitivity, 4.9s TimeCoverageRelationStatistics Valid=685, Invalid=5957, Unknown=0, NotChecked=0, Total=6642 [2022-02-15 02:59:40,670 INFO L933 BasicCegarLoop]: 188 mSDtfsCounter, 1454 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 9056 mSolverCounterSat, 128 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1454 SdHoareTripleChecker+Valid, 240 SdHoareTripleChecker+Invalid, 9184 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 128 IncrementalHoareTripleChecker+Valid, 9056 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2022-02-15 02:59:40,670 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1454 Valid, 240 Invalid, 9184 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [128 Valid, 9056 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2022-02-15 02:59:40,677 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12782 states. [2022-02-15 02:59:41,937 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12782 to 8756. [2022-02-15 02:59:41,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8756 states, 8751 states have (on average 1.295051994057822) internal successors, (11333), 8751 states have internal predecessors, (11333), 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 02:59:41,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8756 states to 8756 states and 11337 transitions. [2022-02-15 02:59:41,952 INFO L78 Accepts]: Start accepts. Automaton has 8756 states and 11337 transitions. Word has length 261 [2022-02-15 02:59:41,953 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 02:59:41,953 INFO L470 AbstractCegarLoop]: Abstraction has 8756 states and 11337 transitions. [2022-02-15 02:59:41,953 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 39 states have (on average 6.589743589743589) internal successors, (257), 38 states have internal predecessors, (257), 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 02:59:41,953 INFO L276 IsEmpty]: Start isEmpty. Operand 8756 states and 11337 transitions. [2022-02-15 02:59:41,955 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 262 [2022-02-15 02:59:41,956 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 02:59:41,956 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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 02:59:41,956 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2022-02-15 02:59:41,956 INFO L402 AbstractCegarLoop]: === Iteration 54 === Targeting ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 02:59:41,956 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 02:59:41,956 INFO L85 PathProgramCache]: Analyzing trace with hash 509994904, now seen corresponding path program 1 times [2022-02-15 02:59:41,956 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 02:59:41,956 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1942981049] [2022-02-15 02:59:41,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 02:59:42,079 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 7 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=5, 2=1}, 1={1=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:59:42,188 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 7 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=5, 2=1}, 1={1=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:59:42,189 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-15 02:59:42,189 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-02-15 02:59:42,607 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 02:59:45,993 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 8 AssignedVariables, 1 ReadonlyVariables, Eigenvalues: {0={1=6, 2=1}, 1={1=2}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:59:45,993 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2022-02-15 02:59:45,994 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-15 02:59:45,994 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-02-15 02:59:49,385 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 9 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=7, 2=1}, 1={1=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:59:49,802 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 02:59:49,908 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 7 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=5, 2=1}, 1={1=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:59:49,909 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-15 02:59:49,909 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-02-15 02:59:50,022 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 5 AssignedVariables, 2 ReadonlyVariables, Eigenvalues: {0={1=3, 2=1}, 1={1=3}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:59:50,022 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2022-02-15 02:59:50,156 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 7 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=5, 2=1}, 1={1=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:59:53,568 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 8 AssignedVariables, 1 ReadonlyVariables, Eigenvalues: {0={1=6, 2=1}, 1={1=2}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:59:53,673 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 7 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=7}, 1={1=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:59:53,673 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2022-02-15 02:59:53,673 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 02:59:53,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:59:53,834 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 02:59:53,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:59:53,836 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 02:59:57,401 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 02:59:57,401 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1942981049] [2022-02-15 02:59:57,401 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1942981049] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 02:59:57,401 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 02:59:57,401 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [39] imperfect sequences [] total 39 [2022-02-15 02:59:57,401 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [292003142] [2022-02-15 02:59:57,401 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 02:59:57,402 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2022-02-15 02:59:57,402 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 02:59:57,402 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2022-02-15 02:59:57,402 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=274, Invalid=1532, Unknown=0, NotChecked=0, Total=1806 [2022-02-15 02:59:57,402 INFO L87 Difference]: Start difference. First operand 8756 states and 11337 transitions. Second operand has 39 states, 38 states have (on average 6.7368421052631575) internal successors, (256), 37 states have internal predecessors, (256), 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 03:00:02,825 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 03:00:02,826 INFO L93 Difference]: Finished difference Result 17282 states and 22529 transitions. [2022-02-15 03:00:02,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2022-02-15 03:00:02,826 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 38 states have (on average 6.7368421052631575) internal successors, (256), 37 states have internal predecessors, (256), 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 261 [2022-02-15 03:00:02,826 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 03:00:02,844 INFO L225 Difference]: With dead ends: 17282 [2022-02-15 03:00:02,844 INFO L226 Difference]: Without dead ends: 12631 [2022-02-15 03:00:02,896 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 266 GetRequests, 86 SyntacticMatches, 100 SemanticMatches, 80 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4158 ImplicationChecksByTransitivity, 3.9s TimeCoverageRelationStatistics Valid=815, Invalid=5827, Unknown=0, NotChecked=0, Total=6642 [2022-02-15 03:00:02,896 INFO L933 BasicCegarLoop]: 184 mSDtfsCounter, 1337 mSDsluCounter, 67 mSDsCounter, 0 mSdLazyCounter, 8092 mSolverCounterSat, 121 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1337 SdHoareTripleChecker+Valid, 251 SdHoareTripleChecker+Invalid, 8213 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 121 IncrementalHoareTripleChecker+Valid, 8092 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2022-02-15 03:00:02,896 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1337 Valid, 251 Invalid, 8213 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [121 Valid, 8092 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2022-02-15 03:00:02,902 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12631 states. [2022-02-15 03:00:04,188 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12631 to 8762. [2022-02-15 03:00:04,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8762 states, 8757 states have (on average 1.2945072513417837) internal successors, (11336), 8757 states have internal predecessors, (11336), 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 03:00:04,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8762 states to 8762 states and 11340 transitions. [2022-02-15 03:00:04,205 INFO L78 Accepts]: Start accepts. Automaton has 8762 states and 11340 transitions. Word has length 261 [2022-02-15 03:00:04,205 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 03:00:04,205 INFO L470 AbstractCegarLoop]: Abstraction has 8762 states and 11340 transitions. [2022-02-15 03:00:04,205 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 38 states have (on average 6.7368421052631575) internal successors, (256), 37 states have internal predecessors, (256), 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 03:00:04,205 INFO L276 IsEmpty]: Start isEmpty. Operand 8762 states and 11340 transitions. [2022-02-15 03:00:04,208 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 263 [2022-02-15 03:00:04,208 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 03:00:04,208 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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] [2022-02-15 03:00:04,208 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2022-02-15 03:00:04,208 INFO L402 AbstractCegarLoop]: === Iteration 55 === Targeting ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 03:00:04,209 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 03:00:04,209 INFO L85 PathProgramCache]: Analyzing trace with hash 2142217805, now seen corresponding path program 1 times [2022-02-15 03:00:04,209 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 03:00:04,209 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1712984925] [2022-02-15 03:00:04,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 03:00:04,415 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 03:00:04,927 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 03:00:05,079 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 03:00:05,121 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 3 AssignedVariables, 1 ReadonlyVariables, Eigenvalues: {0={1=1, 2=1}, 1={1=2}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 03:00:08,494 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 8 AssignedVariables, 1 ReadonlyVariables, Eigenvalues: {0={1=6, 2=1}, 1={1=2}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 03:00:08,494 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2022-02-15 03:00:11,861 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 8 AssignedVariables, 1 ReadonlyVariables, Eigenvalues: {0={1=8}, 1={1=2}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 03:00:11,999 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 03:00:12,000 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2022-02-15 03:00:12,138 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 03:00:15,616 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 8 AssignedVariables, 1 ReadonlyVariables, Eigenvalues: {0={1=6, 2=1}, 1={1=2}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 03:00:15,670 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 3 AssignedVariables, 1 ReadonlyVariables, Eigenvalues: {0={1=1, 2=1}, 1={1=2}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 03:00:16,105 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 03:00:19,508 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 03:00:19,588 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 03:00:19,588 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2022-02-15 03:00:19,588 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 03:00:19,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:00:19,640 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 03:00:19,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:00:19,645 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 03:00:22,086 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 03:00:22,086 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1712984925] [2022-02-15 03:00:22,086 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1712984925] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 03:00:22,087 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 03:00:22,087 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [38] imperfect sequences [] total 38 [2022-02-15 03:00:22,087 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1175150894] [2022-02-15 03:00:22,087 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 03:00:22,087 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2022-02-15 03:00:22,088 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 03:00:22,088 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2022-02-15 03:00:22,088 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=138, Invalid=1344, Unknown=0, NotChecked=0, Total=1482 [2022-02-15 03:00:22,088 INFO L87 Difference]: Start difference. First operand 8762 states and 11340 transitions. Second operand has 38 states, 37 states have (on average 6.081081081081081) internal successors, (225), 36 states have internal predecessors, (225), 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 03:00:25,476 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 03:00:25,477 INFO L93 Difference]: Finished difference Result 13500 states and 17464 transitions. [2022-02-15 03:00:25,477 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-02-15 03:00:25,477 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 37 states have (on average 6.081081081081081) internal successors, (225), 36 states have internal predecessors, (225), 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 262 [2022-02-15 03:00:25,477 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 03:00:25,488 INFO L225 Difference]: With dead ends: 13500 [2022-02-15 03:00:25,488 INFO L226 Difference]: Without dead ends: 8881 [2022-02-15 03:00:25,495 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 260 GetRequests, 112 SyntacticMatches, 76 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2991 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=462, Invalid=4940, Unknown=0, NotChecked=0, Total=5402 [2022-02-15 03:00:25,495 INFO L933 BasicCegarLoop]: 209 mSDtfsCounter, 595 mSDsluCounter, 87 mSDsCounter, 0 mSdLazyCounter, 5488 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 595 SdHoareTripleChecker+Valid, 296 SdHoareTripleChecker+Invalid, 5522 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 5488 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-02-15 03:00:25,495 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [595 Valid, 296 Invalid, 5522 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 5488 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-02-15 03:00:25,500 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8881 states. [2022-02-15 03:00:26,793 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8881 to 8878. [2022-02-15 03:00:26,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8878 states, 8873 states have (on average 1.290769750929787) internal successors, (11453), 8873 states have internal predecessors, (11453), 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 03:00:26,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8878 states to 8878 states and 11457 transitions. [2022-02-15 03:00:26,806 INFO L78 Accepts]: Start accepts. Automaton has 8878 states and 11457 transitions. Word has length 262 [2022-02-15 03:00:26,807 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 03:00:26,807 INFO L470 AbstractCegarLoop]: Abstraction has 8878 states and 11457 transitions. [2022-02-15 03:00:26,807 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 37 states have (on average 6.081081081081081) internal successors, (225), 36 states have internal predecessors, (225), 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 03:00:26,807 INFO L276 IsEmpty]: Start isEmpty. Operand 8878 states and 11457 transitions. [2022-02-15 03:00:26,809 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 263 [2022-02-15 03:00:26,809 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 03:00:26,810 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 03:00:26,810 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2022-02-15 03:00:26,810 INFO L402 AbstractCegarLoop]: === Iteration 56 === Targeting ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 03:00:26,810 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 03:00:26,810 INFO L85 PathProgramCache]: Analyzing trace with hash -1951524880, now seen corresponding path program 2 times [2022-02-15 03:00:26,810 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 03:00:26,810 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1511568057] [2022-02-15 03:00:26,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 03:00:26,932 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 7 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=7}, 1={1=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 03:00:27,044 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 7 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=5, 2=1}, 1={1=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 03:00:27,449 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 6 AssignedVariables, 2 ReadonlyVariables, Eigenvalues: {0={1=4, 2=1}, 1={1=3}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 03:00:30,827 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 8 AssignedVariables, 1 ReadonlyVariables, Eigenvalues: {0={1=8}, 1={1=2}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 03:00:30,827 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-15 03:00:30,828 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-02-15 03:00:30,828 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2022-02-15 03:00:34,241 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 8 AssignedVariables, 1 ReadonlyVariables, Eigenvalues: {0={1=6, 2=1}, 1={1=2}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 03:00:34,241 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-15 03:00:34,241 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-02-15 03:00:34,671 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 03:00:34,788 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 7 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=5, 2=1}, 1={1=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 03:00:34,927 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 7 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=5, 2=1}, 1={1=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 03:00:34,927 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-15 03:00:34,928 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-02-15 03:00:34,928 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2022-02-15 03:00:35,037 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 7 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=5, 2=1}, 1={1=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 03:00:38,525 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 8 AssignedVariables, 1 ReadonlyVariables, Eigenvalues: {0={1=6, 2=1}, 1={1=2}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 03:00:38,635 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 7 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=7}, 1={1=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 03:00:39,042 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 6 AssignedVariables, 2 ReadonlyVariables, Eigenvalues: {0={1=4, 2=1}, 1={1=3}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 03:00:39,043 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2022-02-15 03:00:39,043 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 03:00:39,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:00:39,113 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 03:00:39,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:00:39,116 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 03:00:43,732 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 03:00:43,733 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1511568057] [2022-02-15 03:00:43,733 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1511568057] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 03:00:43,733 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 03:00:43,733 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [43] imperfect sequences [] total 43 [2022-02-15 03:00:43,733 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1543658459] [2022-02-15 03:00:43,733 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 03:00:43,734 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2022-02-15 03:00:43,734 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 03:00:43,734 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2022-02-15 03:00:43,734 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=171, Invalid=1809, Unknown=0, NotChecked=0, Total=1980 [2022-02-15 03:00:43,734 INFO L87 Difference]: Start difference. First operand 8878 states and 11457 transitions. Second operand has 43 states, 42 states have (on average 6.142857142857143) internal successors, (258), 41 states have internal predecessors, (258), 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)