/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_1.cil-1.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-6c470ae [2022-02-15 02:34:08,341 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-02-15 02:34:08,342 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-02-15 02:34:08,367 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-02-15 02:34:08,394 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-02-15 02:34:08,395 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-02-15 02:34:08,395 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-02-15 02:34:08,396 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 02:34:08,404 INFO L113 SettingsManager]: Loading preferences was successful [2022-02-15 02:34:08,404 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-02-15 02:34:08,405 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-02-15 02:34:08,405 INFO L138 SettingsManager]: * sizeof long=4 [2022-02-15 02:34:08,406 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-02-15 02:34:08,406 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-02-15 02:34:08,406 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-02-15 02:34:08,406 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-02-15 02:34:08,406 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-02-15 02:34:08,406 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-02-15 02:34:08,407 INFO L138 SettingsManager]: * sizeof long double=12 [2022-02-15 02:34:08,407 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-02-15 02:34:08,407 INFO L138 SettingsManager]: * Use constant arrays=true [2022-02-15 02:34:08,407 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-02-15 02:34:08,407 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-02-15 02:34:08,407 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-02-15 02:34:08,408 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-02-15 02:34:08,408 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-02-15 02:34:08,408 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-02-15 02:34:08,408 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-02-15 02:34:08,408 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2022-02-15 02:34:08,408 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-02-15 02:34:08,408 INFO L138 SettingsManager]: * Loop acceleration method that is used by accelerated interpolation=JORDAN [2022-02-15 02:34:08,409 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-02-15 02:34:08,594 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-02-15 02:34:08,618 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-02-15 02:34:08,620 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-02-15 02:34:08,621 INFO L271 PluginConnector]: Initializing CDTParser... [2022-02-15 02:34:08,623 INFO L275 PluginConnector]: CDTParser initialized [2022-02-15 02:34:08,624 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/openssl-simplified/s3_srvr_1.cil-1.c [2022-02-15 02:34:08,676 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0374968b1/0e495819c7d34fe1be12194c4d6ca900/FLAG28fc209eb [2022-02-15 02:34:09,075 INFO L306 CDTParser]: Found 1 translation units. [2022-02-15 02:34:09,075 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/openssl-simplified/s3_srvr_1.cil-1.c [2022-02-15 02:34:09,084 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0374968b1/0e495819c7d34fe1be12194c4d6ca900/FLAG28fc209eb [2022-02-15 02:34:09,095 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0374968b1/0e495819c7d34fe1be12194c4d6ca900 [2022-02-15 02:34:09,098 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-02-15 02:34:09,099 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2022-02-15 02:34:09,104 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-02-15 02:34:09,104 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-02-15 02:34:09,106 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-02-15 02:34:09,107 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.02 02:34:09" (1/1) ... [2022-02-15 02:34:09,108 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@63f4f0fe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 02:34:09, skipping insertion in model container [2022-02-15 02:34:09,108 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.02 02:34:09" (1/1) ... [2022-02-15 02:34:09,113 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-02-15 02:34:09,160 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-02-15 02:34:09,349 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_1.cil-1.c[43309,43322] [2022-02-15 02:34:09,355 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-02-15 02:34:09,361 INFO L203 MainTranslator]: Completed pre-run [2022-02-15 02:34:09,401 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_1.cil-1.c[43309,43322] [2022-02-15 02:34:09,404 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-02-15 02:34:09,414 INFO L208 MainTranslator]: Completed translation [2022-02-15 02:34:09,415 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 02:34:09 WrapperNode [2022-02-15 02:34:09,415 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-02-15 02:34:09,416 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-02-15 02:34:09,416 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-02-15 02:34:09,416 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-02-15 02:34:09,425 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 02:34:09" (1/1) ... [2022-02-15 02:34:09,425 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 02:34:09" (1/1) ... [2022-02-15 02:34:09,446 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 02:34:09" (1/1) ... [2022-02-15 02:34:09,446 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 02:34:09" (1/1) ... [2022-02-15 02:34:09,455 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 02:34:09" (1/1) ... [2022-02-15 02:34:09,471 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 02:34:09" (1/1) ... [2022-02-15 02:34:09,473 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 02:34:09" (1/1) ... [2022-02-15 02:34:09,476 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-02-15 02:34:09,477 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-02-15 02:34:09,477 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-02-15 02:34:09,477 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-02-15 02:34:09,480 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 02:34:09" (1/1) ... [2022-02-15 02:34:09,497 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-02-15 02:34:09,525 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-15 02:34:09,540 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 02:34:09,568 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 02:34:09,590 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2022-02-15 02:34:09,590 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-02-15 02:34:09,590 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2022-02-15 02:34:09,590 INFO L138 BoogieDeclarations]: Found implementation of procedure ssl3_accept [2022-02-15 02:34:09,591 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2022-02-15 02:34:09,591 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2022-02-15 02:34:09,591 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2022-02-15 02:34:09,591 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2022-02-15 02:34:09,591 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-02-15 02:34:09,591 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2022-02-15 02:34:09,591 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2022-02-15 02:34:09,592 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_long [2022-02-15 02:34:09,592 INFO L130 BoogieDeclarations]: Found specification of procedure ssl3_accept [2022-02-15 02:34:09,592 INFO L130 BoogieDeclarations]: Found specification of procedure main [2022-02-15 02:34:09,593 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2022-02-15 02:34:09,594 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-02-15 02:34:09,594 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-02-15 02:34:09,594 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-02-15 02:34:09,594 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-02-15 02:34:09,595 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-02-15 02:34:09,678 INFO L234 CfgBuilder]: Building ICFG [2022-02-15 02:34:09,679 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-02-15 02:34:09,767 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-02-15 02:34:10,142 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##90: assume false; [2022-02-15 02:34:10,142 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##91: assume !false; [2022-02-15 02:34:10,149 INFO L275 CfgBuilder]: Performing block encoding [2022-02-15 02:34:10,156 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-02-15 02:34:10,156 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-02-15 02:34:10,157 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.02 02:34:10 BoogieIcfgContainer [2022-02-15 02:34:10,158 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-02-15 02:34:10,159 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-02-15 02:34:10,159 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-02-15 02:34:10,167 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-02-15 02:34:10,167 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.02 02:34:09" (1/3) ... [2022-02-15 02:34:10,168 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@16857a16 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.02 02:34:10, skipping insertion in model container [2022-02-15 02:34:10,168 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 02:34:09" (2/3) ... [2022-02-15 02:34:10,168 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@16857a16 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.02 02:34:10, skipping insertion in model container [2022-02-15 02:34:10,169 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.02 02:34:10" (3/3) ... [2022-02-15 02:34:10,170 INFO L111 eAbstractionObserver]: Analyzing ICFG s3_srvr_1.cil-1.c [2022-02-15 02:34:10,174 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2022-02-15 02:34:10,174 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-02-15 02:34:10,220 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-02-15 02:34:10,226 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 02:34:10,226 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-02-15 02:34:10,241 INFO L276 IsEmpty]: Start isEmpty. Operand has 152 states, 144 states have (on average 1.7013888888888888) internal successors, (245), 145 states have internal predecessors, (245), 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 02:34:10,251 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2022-02-15 02:34:10,251 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 02:34:10,252 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, 1] [2022-02-15 02:34:10,252 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 02:34:10,256 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 02:34:10,257 INFO L85 PathProgramCache]: Analyzing trace with hash 1979865033, now seen corresponding path program 1 times [2022-02-15 02:34:10,264 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 02:34:10,264 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1221782574] [2022-02-15 02:34:10,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 02:34:10,277 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 02:34:10,321 INFO L274 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-15 02:34:10,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:34:10,563 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 02:34:10,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:34:10,591 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 02:34:10,593 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 02:34:10,593 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1221782574] [2022-02-15 02:34:10,594 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1221782574] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 02:34:10,594 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 02:34:10,595 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-02-15 02:34:10,596 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2023870002] [2022-02-15 02:34:10,596 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 02:34:10,600 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-02-15 02:34:10,600 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 02:34:10,624 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-02-15 02:34:10,625 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-02-15 02:34:10,627 INFO L87 Difference]: Start difference. First operand has 152 states, 144 states have (on average 1.7013888888888888) internal successors, (245), 145 states have internal predecessors, (245), 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 11.75) internal successors, (47), 3 states have internal predecessors, (47), 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 02:34:11,019 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 02:34:11,020 INFO L93 Difference]: Finished difference Result 420 states and 707 transitions. [2022-02-15 02:34:11,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-02-15 02:34:11,023 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.75) internal successors, (47), 3 states have internal predecessors, (47), 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 51 [2022-02-15 02:34:11,024 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 02:34:11,039 INFO L225 Difference]: With dead ends: 420 [2022-02-15 02:34:11,039 INFO L226 Difference]: Without dead ends: 255 [2022-02-15 02:34:11,044 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 02:34:11,048 INFO L933 BasicCegarLoop]: 241 mSDtfsCounter, 637 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 239 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 639 SdHoareTripleChecker+Valid, 250 SdHoareTripleChecker+Invalid, 247 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 239 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-02-15 02:34:11,049 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [639 Valid, 250 Invalid, 247 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 239 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-02-15 02:34:11,065 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 255 states. [2022-02-15 02:34:11,109 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 255 to 255. [2022-02-15 02:34:11,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 255 states, 250 states have (on average 1.52) internal successors, (380), 250 states have internal predecessors, (380), 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 02:34:11,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 255 states to 255 states and 384 transitions. [2022-02-15 02:34:11,113 INFO L78 Accepts]: Start accepts. Automaton has 255 states and 384 transitions. Word has length 51 [2022-02-15 02:34:11,114 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 02:34:11,114 INFO L470 AbstractCegarLoop]: Abstraction has 255 states and 384 transitions. [2022-02-15 02:34:11,114 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.75) internal successors, (47), 3 states have internal predecessors, (47), 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 02:34:11,114 INFO L276 IsEmpty]: Start isEmpty. Operand 255 states and 384 transitions. [2022-02-15 02:34:11,119 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-02-15 02:34:11,119 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 02:34:11,119 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] [2022-02-15 02:34:11,120 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-02-15 02:34:11,120 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 02:34:11,120 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 02:34:11,121 INFO L85 PathProgramCache]: Analyzing trace with hash 1218319566, now seen corresponding path program 1 times [2022-02-15 02:34:11,121 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 02:34:11,121 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [958117720] [2022-02-15 02:34:11,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 02:34:11,952 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 02:34:11,953 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-02-15 02:34:11,953 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 02:34:11,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:34:12,052 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 02:34:12,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:34:12,058 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 02:34:12,917 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 02:34:12,918 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [958117720] [2022-02-15 02:34:12,918 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [958117720] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 02:34:12,918 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 02:34:12,918 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2022-02-15 02:34:12,919 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [852252998] [2022-02-15 02:34:12,919 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 02:34:12,920 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-02-15 02:34:12,920 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 02:34:12,920 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-02-15 02:34:12,920 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=202, Unknown=0, NotChecked=0, Total=272 [2022-02-15 02:34:12,921 INFO L87 Difference]: Start difference. First operand 255 states and 384 transitions. Second operand has 17 states, 16 states have (on average 3.9375) internal successors, (63), 15 states have internal predecessors, (63), 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 02:34:13,648 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 02:34:13,648 INFO L93 Difference]: Finished difference Result 592 states and 919 transitions. [2022-02-15 02:34:13,649 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-02-15 02:34:13,649 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 3.9375) internal successors, (63), 15 states have internal predecessors, (63), 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 67 [2022-02-15 02:34:13,650 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 02:34:13,651 INFO L225 Difference]: With dead ends: 592 [2022-02-15 02:34:13,651 INFO L226 Difference]: Without dead ends: 339 [2022-02-15 02:34:13,653 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 12 SyntacticMatches, 6 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 182 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=219, Invalid=651, Unknown=0, NotChecked=0, Total=870 [2022-02-15 02:34:13,654 INFO L933 BasicCegarLoop]: 178 mSDtfsCounter, 592 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 637 mSolverCounterSat, 64 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 592 SdHoareTripleChecker+Valid, 215 SdHoareTripleChecker+Invalid, 1286 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 64 IncrementalHoareTripleChecker+Valid, 637 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 585 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-02-15 02:34:13,655 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [592 Valid, 215 Invalid, 1286 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [64 Valid, 637 Invalid, 0 Unknown, 585 Unchecked, 0.4s Time] [2022-02-15 02:34:13,656 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 339 states. [2022-02-15 02:34:13,697 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 339 to 326. [2022-02-15 02:34:13,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 326 states, 321 states have (on average 1.4454828660436136) internal successors, (464), 321 states have internal predecessors, (464), 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 02:34:13,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 326 states to 326 states and 468 transitions. [2022-02-15 02:34:13,699 INFO L78 Accepts]: Start accepts. Automaton has 326 states and 468 transitions. Word has length 67 [2022-02-15 02:34:13,700 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 02:34:13,701 INFO L470 AbstractCegarLoop]: Abstraction has 326 states and 468 transitions. [2022-02-15 02:34:13,701 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 16 states have (on average 3.9375) internal successors, (63), 15 states have internal predecessors, (63), 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 02:34:13,702 INFO L276 IsEmpty]: Start isEmpty. Operand 326 states and 468 transitions. [2022-02-15 02:34:13,708 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-02-15 02:34:13,709 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 02:34:13,711 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] [2022-02-15 02:34:13,712 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-02-15 02:34:13,715 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 02:34:13,715 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 02:34:13,715 INFO L85 PathProgramCache]: Analyzing trace with hash -1802002652, now seen corresponding path program 1 times [2022-02-15 02:34:13,715 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 02:34:13,716 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1886881306] [2022-02-15 02:34:13,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 02:34:14,210 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 02:34:14,211 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-02-15 02:34:14,211 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 02:34:14,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:34:14,293 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 02:34:14,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:34:14,298 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 02:34:14,971 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 02:34:14,971 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1886881306] [2022-02-15 02:34:14,971 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1886881306] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 02:34:14,971 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 02:34:14,971 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2022-02-15 02:34:14,972 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [882031376] [2022-02-15 02:34:14,972 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 02:34:14,972 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-02-15 02:34:14,972 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 02:34:14,973 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-02-15 02:34:14,973 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=202, Unknown=0, NotChecked=0, Total=272 [2022-02-15 02:34:14,973 INFO L87 Difference]: Start difference. First operand 326 states and 468 transitions. Second operand has 17 states, 16 states have (on average 4.0) internal successors, (64), 15 states have internal predecessors, (64), 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 02:34:15,869 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 02:34:15,870 INFO L93 Difference]: Finished difference Result 793 states and 1199 transitions. [2022-02-15 02:34:15,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-02-15 02:34:15,870 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 4.0) internal successors, (64), 15 states have internal predecessors, (64), 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 68 [2022-02-15 02:34:15,871 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 02:34:15,873 INFO L225 Difference]: With dead ends: 793 [2022-02-15 02:34:15,873 INFO L226 Difference]: Without dead ends: 505 [2022-02-15 02:34:15,875 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 10 SyntacticMatches, 6 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 177 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=219, Invalid=651, Unknown=0, NotChecked=0, Total=870 [2022-02-15 02:34:15,876 INFO L933 BasicCegarLoop]: 182 mSDtfsCounter, 1098 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 862 mSolverCounterSat, 87 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1098 SdHoareTripleChecker+Valid, 204 SdHoareTripleChecker+Invalid, 1153 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 87 IncrementalHoareTripleChecker+Valid, 862 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 204 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-02-15 02:34:15,876 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1098 Valid, 204 Invalid, 1153 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [87 Valid, 862 Invalid, 0 Unknown, 204 Unchecked, 0.6s Time] [2022-02-15 02:34:15,877 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 505 states. [2022-02-15 02:34:15,921 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 505 to 359. [2022-02-15 02:34:15,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 359 states, 354 states have (on average 1.4491525423728813) internal successors, (513), 354 states have internal predecessors, (513), 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 02:34:15,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 359 states to 359 states and 517 transitions. [2022-02-15 02:34:15,924 INFO L78 Accepts]: Start accepts. Automaton has 359 states and 517 transitions. Word has length 68 [2022-02-15 02:34:15,924 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 02:34:15,924 INFO L470 AbstractCegarLoop]: Abstraction has 359 states and 517 transitions. [2022-02-15 02:34:15,924 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 16 states have (on average 4.0) internal successors, (64), 15 states have internal predecessors, (64), 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 02:34:15,924 INFO L276 IsEmpty]: Start isEmpty. Operand 359 states and 517 transitions. [2022-02-15 02:34:15,927 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2022-02-15 02:34:15,927 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 02:34:15,927 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, 1] [2022-02-15 02:34:15,927 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-02-15 02:34:15,927 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 02:34:15,928 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 02:34:15,928 INFO L85 PathProgramCache]: Analyzing trace with hash 2142422128, now seen corresponding path program 1 times [2022-02-15 02:34:15,928 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 02:34:15,928 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1303802790] [2022-02-15 02:34:15,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 02:34:16,017 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 02:34:16,573 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 02:34:16,574 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2022-02-15 02:34:16,652 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 02:34:16,653 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2022-02-15 02:34:16,653 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 02:34:16,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:34:16,730 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 02:34:16,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:34:16,735 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 02:34:17,136 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 02:34:17,136 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1303802790] [2022-02-15 02:34:17,136 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1303802790] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 02:34:17,136 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 02:34:17,137 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-02-15 02:34:17,137 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [972514615] [2022-02-15 02:34:17,137 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 02:34:17,137 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-02-15 02:34:17,137 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 02:34:17,138 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-02-15 02:34:17,138 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=341, Unknown=0, NotChecked=0, Total=420 [2022-02-15 02:34:17,138 INFO L87 Difference]: Start difference. First operand 359 states and 517 transitions. Second operand has 21 states, 20 states have (on average 4.2) internal successors, (84), 19 states have internal predecessors, (84), 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 02:34:18,518 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 02:34:18,518 INFO L93 Difference]: Finished difference Result 819 states and 1160 transitions. [2022-02-15 02:34:18,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-02-15 02:34:18,519 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 20 states have (on average 4.2) internal successors, (84), 19 states have internal predecessors, (84), 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 02:34:18,519 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 02:34:18,522 INFO L225 Difference]: With dead ends: 819 [2022-02-15 02:34:18,522 INFO L226 Difference]: Without dead ends: 492 [2022-02-15 02:34:18,523 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 33 SyntacticMatches, 1 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 343 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=263, Invalid=1219, Unknown=0, NotChecked=0, Total=1482 [2022-02-15 02:34:18,524 INFO L933 BasicCegarLoop]: 197 mSDtfsCounter, 939 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 2016 mSolverCounterSat, 66 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 939 SdHoareTripleChecker+Valid, 239 SdHoareTripleChecker+Invalid, 2082 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 66 IncrementalHoareTripleChecker+Valid, 2016 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-02-15 02:34:18,525 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [939 Valid, 239 Invalid, 2082 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [66 Valid, 2016 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-02-15 02:34:18,525 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 492 states. [2022-02-15 02:34:18,549 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 492 to 387. [2022-02-15 02:34:18,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 387 states, 382 states have (on average 1.4293193717277486) internal successors, (546), 382 states have internal predecessors, (546), 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 02:34:18,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 387 states to 387 states and 550 transitions. [2022-02-15 02:34:18,552 INFO L78 Accepts]: Start accepts. Automaton has 387 states and 550 transitions. Word has length 88 [2022-02-15 02:34:18,552 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 02:34:18,552 INFO L470 AbstractCegarLoop]: Abstraction has 387 states and 550 transitions. [2022-02-15 02:34:18,552 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 20 states have (on average 4.2) internal successors, (84), 19 states have internal predecessors, (84), 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 02:34:18,552 INFO L276 IsEmpty]: Start isEmpty. Operand 387 states and 550 transitions. [2022-02-15 02:34:18,553 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2022-02-15 02:34:18,553 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 02:34:18,553 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, 1] [2022-02-15 02:34:18,554 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-02-15 02:34:18,554 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 02:34:18,554 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 02:34:18,554 INFO L85 PathProgramCache]: Analyzing trace with hash -1255151890, now seen corresponding path program 1 times [2022-02-15 02:34:18,555 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 02:34:18,555 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2044496081] [2022-02-15 02:34:18,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 02:34:18,643 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 02:34:19,147 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 02:34:19,148 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2022-02-15 02:34:19,223 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 02:34:19,223 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2022-02-15 02:34:19,223 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 02:34:19,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:34:19,287 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 02:34:19,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:34:19,292 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 02:34:19,647 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 02:34:19,647 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2044496081] [2022-02-15 02:34:19,648 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [2044496081] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 02:34:19,648 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 02:34:19,648 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-02-15 02:34:19,648 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1038226325] [2022-02-15 02:34:19,648 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 02:34:19,648 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-02-15 02:34:19,648 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 02:34:19,649 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-02-15 02:34:19,649 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=341, Unknown=0, NotChecked=0, Total=420 [2022-02-15 02:34:19,649 INFO L87 Difference]: Start difference. First operand 387 states and 550 transitions. Second operand has 21 states, 20 states have (on average 4.2) internal successors, (84), 19 states have internal predecessors, (84), 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 02:34:21,304 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 02:34:21,304 INFO L93 Difference]: Finished difference Result 685 states and 952 transitions. [2022-02-15 02:34:21,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-02-15 02:34:21,305 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 20 states have (on average 4.2) internal successors, (84), 19 states have internal predecessors, (84), 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 02:34:21,305 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 02:34:21,308 INFO L225 Difference]: With dead ends: 685 [2022-02-15 02:34:21,308 INFO L226 Difference]: Without dead ends: 451 [2022-02-15 02:34:21,309 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 33 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 02:34:21,310 INFO L933 BasicCegarLoop]: 197 mSDtfsCounter, 859 mSDsluCounter, 72 mSDsCounter, 0 mSdLazyCounter, 3036 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 859 SdHoareTripleChecker+Valid, 269 SdHoareTripleChecker+Invalid, 3080 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 3036 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-02-15 02:34:21,310 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [859 Valid, 269 Invalid, 3080 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 3036 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-02-15 02:34:21,311 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 451 states. [2022-02-15 02:34:21,333 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 451 to 368. [2022-02-15 02:34:21,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 368 states, 363 states have (on average 1.4490358126721763) internal successors, (526), 363 states have internal predecessors, (526), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 02:34:21,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 368 states to 368 states and 530 transitions. [2022-02-15 02:34:21,335 INFO L78 Accepts]: Start accepts. Automaton has 368 states and 530 transitions. Word has length 88 [2022-02-15 02:34:21,335 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 02:34:21,335 INFO L470 AbstractCegarLoop]: Abstraction has 368 states and 530 transitions. [2022-02-15 02:34:21,335 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 20 states have (on average 4.2) internal successors, (84), 19 states have internal predecessors, (84), 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 02:34:21,335 INFO L276 IsEmpty]: Start isEmpty. Operand 368 states and 530 transitions. [2022-02-15 02:34:21,336 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2022-02-15 02:34:21,336 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 02:34:21,337 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, 1] [2022-02-15 02:34:21,337 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-02-15 02:34:21,337 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 02:34:21,337 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 02:34:21,337 INFO L85 PathProgramCache]: Analyzing trace with hash -235882507, now seen corresponding path program 1 times [2022-02-15 02:34:21,337 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 02:34:21,338 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1345213784] [2022-02-15 02:34:21,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 02:34:21,415 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 02:34:21,837 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 02:34:21,837 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2022-02-15 02:34:21,915 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 02:34:21,915 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2022-02-15 02:34:21,915 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 02:34:21,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:34:21,991 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 02:34:21,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:34:21,996 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 02:34:22,397 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 02:34:22,397 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1345213784] [2022-02-15 02:34:22,397 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1345213784] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 02:34:22,397 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 02:34:22,397 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-02-15 02:34:22,397 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1807826512] [2022-02-15 02:34:22,397 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 02:34:22,398 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-02-15 02:34:22,398 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 02:34:22,398 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-02-15 02:34:22,399 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=378, Unknown=0, NotChecked=0, Total=462 [2022-02-15 02:34:22,399 INFO L87 Difference]: Start difference. First operand 368 states and 530 transitions. Second operand has 22 states, 21 states have (on average 4.0476190476190474) internal successors, (85), 20 states have internal predecessors, (85), 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 02:34:23,682 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 02:34:23,682 INFO L93 Difference]: Finished difference Result 669 states and 944 transitions. [2022-02-15 02:34:23,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-02-15 02:34:23,683 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 21 states have (on average 4.0476190476190474) internal successors, (85), 20 states have internal predecessors, (85), 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 89 [2022-02-15 02:34:23,683 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 02:34:23,685 INFO L225 Difference]: With dead ends: 669 [2022-02-15 02:34:23,685 INFO L226 Difference]: Without dead ends: 477 [2022-02-15 02:34:23,686 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 394 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=280, Invalid=1360, Unknown=0, NotChecked=0, Total=1640 [2022-02-15 02:34:23,687 INFO L933 BasicCegarLoop]: 201 mSDtfsCounter, 929 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 1885 mSolverCounterSat, 67 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 929 SdHoareTripleChecker+Valid, 238 SdHoareTripleChecker+Invalid, 1952 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 67 IncrementalHoareTripleChecker+Valid, 1885 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-02-15 02:34:23,687 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [929 Valid, 238 Invalid, 1952 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [67 Valid, 1885 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-02-15 02:34:23,688 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 477 states. [2022-02-15 02:34:23,716 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 477 to 393. [2022-02-15 02:34:23,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 393 states, 388 states have (on average 1.4278350515463918) internal successors, (554), 388 states have internal predecessors, (554), 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 02:34:23,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 393 states to 393 states and 558 transitions. [2022-02-15 02:34:23,718 INFO L78 Accepts]: Start accepts. Automaton has 393 states and 558 transitions. Word has length 89 [2022-02-15 02:34:23,719 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 02:34:23,720 INFO L470 AbstractCegarLoop]: Abstraction has 393 states and 558 transitions. [2022-02-15 02:34:23,720 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 21 states have (on average 4.0476190476190474) internal successors, (85), 20 states have internal predecessors, (85), 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 02:34:23,720 INFO L276 IsEmpty]: Start isEmpty. Operand 393 states and 558 transitions. [2022-02-15 02:34:23,722 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2022-02-15 02:34:23,723 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 02:34:23,723 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, 1] [2022-02-15 02:34:23,723 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-02-15 02:34:23,723 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 02:34:23,723 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 02:34:23,723 INFO L85 PathProgramCache]: Analyzing trace with hash 661510771, now seen corresponding path program 1 times [2022-02-15 02:34:23,724 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 02:34:23,724 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2140982504] [2022-02-15 02:34:23,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 02:34:23,803 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 02:34:24,212 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 02:34:24,213 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2022-02-15 02:34:24,292 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 02:34:24,293 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2022-02-15 02:34:24,293 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 02:34:24,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:34:24,350 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 02:34:24,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:34:24,354 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 02:34:24,742 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 02:34:24,742 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2140982504] [2022-02-15 02:34:24,742 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [2140982504] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 02:34:24,742 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 02:34:24,742 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-02-15 02:34:24,742 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [11513155] [2022-02-15 02:34:24,743 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 02:34:24,743 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-02-15 02:34:24,743 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 02:34:24,743 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-02-15 02:34:24,744 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=378, Unknown=0, NotChecked=0, Total=462 [2022-02-15 02:34:24,744 INFO L87 Difference]: Start difference. First operand 393 states and 558 transitions. Second operand has 22 states, 21 states have (on average 4.0476190476190474) internal successors, (85), 20 states have internal predecessors, (85), 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 02:34:25,884 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 02:34:25,884 INFO L93 Difference]: Finished difference Result 700 states and 975 transitions. [2022-02-15 02:34:25,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-02-15 02:34:25,885 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 21 states have (on average 4.0476190476190474) internal successors, (85), 20 states have internal predecessors, (85), 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 89 [2022-02-15 02:34:25,885 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 02:34:25,887 INFO L225 Difference]: With dead ends: 700 [2022-02-15 02:34:25,887 INFO L226 Difference]: Without dead ends: 483 [2022-02-15 02:34:25,888 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 394 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=280, Invalid=1360, Unknown=0, NotChecked=0, Total=1640 [2022-02-15 02:34:25,889 INFO L933 BasicCegarLoop]: 202 mSDtfsCounter, 899 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 1865 mSolverCounterSat, 62 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 899 SdHoareTripleChecker+Valid, 239 SdHoareTripleChecker+Invalid, 1927 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 62 IncrementalHoareTripleChecker+Valid, 1865 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-02-15 02:34:25,889 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [899 Valid, 239 Invalid, 1927 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [62 Valid, 1865 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-02-15 02:34:25,890 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 483 states. [2022-02-15 02:34:25,918 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 483 to 393. [2022-02-15 02:34:25,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 393 states, 388 states have (on average 1.4278350515463918) internal successors, (554), 388 states have internal predecessors, (554), 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 02:34:25,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 393 states to 393 states and 558 transitions. [2022-02-15 02:34:25,920 INFO L78 Accepts]: Start accepts. Automaton has 393 states and 558 transitions. Word has length 89 [2022-02-15 02:34:25,921 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 02:34:25,921 INFO L470 AbstractCegarLoop]: Abstraction has 393 states and 558 transitions. [2022-02-15 02:34:25,921 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 21 states have (on average 4.0476190476190474) internal successors, (85), 20 states have internal predecessors, (85), 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 02:34:25,921 INFO L276 IsEmpty]: Start isEmpty. Operand 393 states and 558 transitions. [2022-02-15 02:34:25,922 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2022-02-15 02:34:25,922 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 02:34:25,922 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, 1, 1, 1, 1] [2022-02-15 02:34:25,922 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-02-15 02:34:25,923 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 02:34:25,923 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 02:34:25,923 INFO L85 PathProgramCache]: Analyzing trace with hash -228991682, now seen corresponding path program 1 times [2022-02-15 02:34:25,923 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 02:34:25,923 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1030114477] [2022-02-15 02:34:25,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 02:34:25,997 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 02:34:26,527 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 02:34:26,527 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2022-02-15 02:34:26,618 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 02:34:26,619 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2022-02-15 02:34:26,619 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 02:34:26,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:34:26,673 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 02:34:26,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:34:26,677 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 02:34:27,093 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 02:34:27,093 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1030114477] [2022-02-15 02:34:27,094 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1030114477] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 02:34:27,094 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 02:34:27,094 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [24] imperfect sequences [] total 24 [2022-02-15 02:34:27,094 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [961884004] [2022-02-15 02:34:27,094 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 02:34:27,094 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-02-15 02:34:27,094 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 02:34:27,095 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-02-15 02:34:27,095 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=455, Unknown=0, NotChecked=0, Total=552 [2022-02-15 02:34:27,095 INFO L87 Difference]: Start difference. First operand 393 states and 558 transitions. Second operand has 24 states, 23 states have (on average 3.8260869565217392) internal successors, (88), 22 states have internal predecessors, (88), 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 02:34:28,598 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 02:34:28,599 INFO L93 Difference]: Finished difference Result 720 states and 1001 transitions. [2022-02-15 02:34:28,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-02-15 02:34:28,599 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 23 states have (on average 3.8260869565217392) internal successors, (88), 22 states have internal predecessors, (88), 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 92 [2022-02-15 02:34:28,599 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 02:34:28,602 INFO L225 Difference]: With dead ends: 720 [2022-02-15 02:34:28,602 INFO L226 Difference]: Without dead ends: 503 [2022-02-15 02:34:28,603 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 488 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=323, Invalid=1657, Unknown=0, NotChecked=0, Total=1980 [2022-02-15 02:34:28,603 INFO L933 BasicCegarLoop]: 205 mSDtfsCounter, 798 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 2893 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 798 SdHoareTripleChecker+Valid, 262 SdHoareTripleChecker+Invalid, 2944 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 2893 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-02-15 02:34:28,604 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [798 Valid, 262 Invalid, 2944 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 2893 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-02-15 02:34:28,605 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 503 states. [2022-02-15 02:34:28,636 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 503 to 419. [2022-02-15 02:34:28,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 419 states, 414 states have (on average 1.4057971014492754) internal successors, (582), 414 states have internal predecessors, (582), 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 02:34:28,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 419 states to 419 states and 586 transitions. [2022-02-15 02:34:28,639 INFO L78 Accepts]: Start accepts. Automaton has 419 states and 586 transitions. Word has length 92 [2022-02-15 02:34:28,639 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 02:34:28,639 INFO L470 AbstractCegarLoop]: Abstraction has 419 states and 586 transitions. [2022-02-15 02:34:28,639 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 23 states have (on average 3.8260869565217392) internal successors, (88), 22 states have internal predecessors, (88), 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 02:34:28,639 INFO L276 IsEmpty]: Start isEmpty. Operand 419 states and 586 transitions. [2022-02-15 02:34:28,640 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2022-02-15 02:34:28,640 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 02:34:28,640 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, 1, 1, 1, 1] [2022-02-15 02:34:28,641 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-02-15 02:34:28,641 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 02:34:28,641 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 02:34:28,641 INFO L85 PathProgramCache]: Analyzing trace with hash 668401596, now seen corresponding path program 1 times [2022-02-15 02:34:28,641 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 02:34:28,641 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [899731881] [2022-02-15 02:34:28,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 02:34:28,706 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 02:34:29,179 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 02:34:29,179 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2022-02-15 02:34:29,262 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 02:34:29,262 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2022-02-15 02:34:29,262 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 02:34:29,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:34:29,317 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 02:34:29,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:34:29,324 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 02:34:29,787 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 02:34:29,787 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [899731881] [2022-02-15 02:34:29,788 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [899731881] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 02:34:29,788 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 02:34:29,788 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [24] imperfect sequences [] total 24 [2022-02-15 02:34:29,788 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1372109634] [2022-02-15 02:34:29,788 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 02:34:29,789 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-02-15 02:34:29,789 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 02:34:29,790 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-02-15 02:34:29,790 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=455, Unknown=0, NotChecked=0, Total=552 [2022-02-15 02:34:29,790 INFO L87 Difference]: Start difference. First operand 419 states and 586 transitions. Second operand has 24 states, 23 states have (on average 3.8260869565217392) internal successors, (88), 22 states have internal predecessors, (88), 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 02:34:31,240 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 02:34:31,240 INFO L93 Difference]: Finished difference Result 750 states and 1027 transitions. [2022-02-15 02:34:31,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-02-15 02:34:31,242 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 23 states have (on average 3.8260869565217392) internal successors, (88), 22 states have internal predecessors, (88), 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 92 [2022-02-15 02:34:31,242 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 02:34:31,245 INFO L225 Difference]: With dead ends: 750 [2022-02-15 02:34:31,245 INFO L226 Difference]: Without dead ends: 507 [2022-02-15 02:34:31,246 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 488 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=323, Invalid=1657, Unknown=0, NotChecked=0, Total=1980 [2022-02-15 02:34:31,246 INFO L933 BasicCegarLoop]: 205 mSDtfsCounter, 824 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 2635 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 824 SdHoareTripleChecker+Valid, 262 SdHoareTripleChecker+Invalid, 2685 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 2635 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-02-15 02:34:31,247 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [824 Valid, 262 Invalid, 2685 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 2635 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-02-15 02:34:31,247 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 507 states. [2022-02-15 02:34:31,281 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 507 to 419. [2022-02-15 02:34:31,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 419 states, 414 states have (on average 1.4057971014492754) internal successors, (582), 414 states have internal predecessors, (582), 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 02:34:31,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 419 states to 419 states and 586 transitions. [2022-02-15 02:34:31,283 INFO L78 Accepts]: Start accepts. Automaton has 419 states and 586 transitions. Word has length 92 [2022-02-15 02:34:31,283 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 02:34:31,283 INFO L470 AbstractCegarLoop]: Abstraction has 419 states and 586 transitions. [2022-02-15 02:34:31,284 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 23 states have (on average 3.8260869565217392) internal successors, (88), 22 states have internal predecessors, (88), 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 02:34:31,284 INFO L276 IsEmpty]: Start isEmpty. Operand 419 states and 586 transitions. [2022-02-15 02:34:31,286 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2022-02-15 02:34:31,286 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 02:34:31,287 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, 1, 1, 1, 1, 1] [2022-02-15 02:34:31,287 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-02-15 02:34:31,287 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 02:34:31,287 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 02:34:31,287 INFO L85 PathProgramCache]: Analyzing trace with hash -606471755, now seen corresponding path program 1 times [2022-02-15 02:34:31,287 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 02:34:31,288 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1929291281] [2022-02-15 02:34:31,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 02:34:31,700 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 02:34:31,788 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 02:34:31,788 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2022-02-15 02:34:31,850 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 02:34:31,850 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2022-02-15 02:34:31,851 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 02:34:31,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:34:31,920 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 02:34:31,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:34:31,935 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 02:34:32,105 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 02:34:32,105 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1929291281] [2022-02-15 02:34:32,105 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1929291281] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 02:34:32,105 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 02:34:32,105 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-02-15 02:34:32,105 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1645221082] [2022-02-15 02:34:32,106 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 02:34:32,106 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-02-15 02:34:32,106 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 02:34:32,106 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-02-15 02:34:32,107 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-02-15 02:34:32,107 INFO L87 Difference]: Start difference. First operand 419 states and 586 transitions. Second operand has 16 states, 15 states have (on average 5.8) internal successors, (87), 14 states have internal predecessors, (87), 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 02:34:32,876 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 02:34:32,876 INFO L93 Difference]: Finished difference Result 1008 states and 1433 transitions. [2022-02-15 02:34:32,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-02-15 02:34:32,877 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 5.8) internal successors, (87), 14 states have internal predecessors, (87), 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 92 [2022-02-15 02:34:32,877 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 02:34:32,878 INFO L225 Difference]: With dead ends: 1008 [2022-02-15 02:34:32,879 INFO L226 Difference]: Without dead ends: 579 [2022-02-15 02:34:32,880 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 161 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=214, Invalid=598, Unknown=0, NotChecked=0, Total=812 [2022-02-15 02:34:32,880 INFO L933 BasicCegarLoop]: 195 mSDtfsCounter, 790 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 1268 mSolverCounterSat, 66 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 790 SdHoareTripleChecker+Valid, 227 SdHoareTripleChecker+Invalid, 1334 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 66 IncrementalHoareTripleChecker+Valid, 1268 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-02-15 02:34:32,881 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [790 Valid, 227 Invalid, 1334 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [66 Valid, 1268 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-02-15 02:34:32,881 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 579 states. [2022-02-15 02:34:32,925 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 579 to 501. [2022-02-15 02:34:32,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 501 states, 496 states have (on average 1.3891129032258065) internal successors, (689), 496 states have internal predecessors, (689), 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 02:34:32,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 501 states to 501 states and 693 transitions. [2022-02-15 02:34:32,927 INFO L78 Accepts]: Start accepts. Automaton has 501 states and 693 transitions. Word has length 92 [2022-02-15 02:34:32,927 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 02:34:32,927 INFO L470 AbstractCegarLoop]: Abstraction has 501 states and 693 transitions. [2022-02-15 02:34:32,928 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 5.8) internal successors, (87), 14 states have internal predecessors, (87), 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 02:34:32,928 INFO L276 IsEmpty]: Start isEmpty. Operand 501 states and 693 transitions. [2022-02-15 02:34:32,929 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2022-02-15 02:34:32,929 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 02:34:32,929 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, 1, 1, 1, 1, 1] [2022-02-15 02:34:32,929 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-02-15 02:34:32,930 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 02:34:32,930 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 02:34:32,930 INFO L85 PathProgramCache]: Analyzing trace with hash 1234911300, now seen corresponding path program 1 times [2022-02-15 02:34:32,930 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 02:34:32,930 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [898511028] [2022-02-15 02:34:32,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 02:34:32,999 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 6 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=4, 2=1}, 1={1=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:34:32,999 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-15 02:34:33,000 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-02-15 02:34:33,000 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2022-02-15 02:34:33,147 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 02:34:33,148 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2022-02-15 02:34:33,148 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 02:34:33,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:34:33,200 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 02:34:33,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:34:33,204 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 02:34:33,840 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 02:34:33,840 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [898511028] [2022-02-15 02:34:33,841 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [898511028] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 02:34:33,841 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 02:34:33,841 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2022-02-15 02:34:33,841 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1636376246] [2022-02-15 02:34:33,841 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 02:34:33,841 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-02-15 02:34:33,841 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 02:34:33,842 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-02-15 02:34:33,842 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=117, Invalid=533, Unknown=0, NotChecked=0, Total=650 [2022-02-15 02:34:33,842 INFO L87 Difference]: Start difference. First operand 501 states and 693 transitions. Second operand has 26 states, 25 states have (on average 3.56) internal successors, (89), 24 states have internal predecessors, (89), 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 02:34:36,396 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 02:34:36,397 INFO L93 Difference]: Finished difference Result 1116 states and 1529 transitions. [2022-02-15 02:34:36,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-02-15 02:34:36,397 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 25 states have (on average 3.56) internal successors, (89), 24 states have internal predecessors, (89), 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 93 [2022-02-15 02:34:36,397 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 02:34:36,400 INFO L225 Difference]: With dead ends: 1116 [2022-02-15 02:34:36,400 INFO L226 Difference]: Without dead ends: 827 [2022-02-15 02:34:36,401 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 18 SyntacticMatches, 12 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 859 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=449, Invalid=2307, Unknown=0, NotChecked=0, Total=2756 [2022-02-15 02:34:36,402 INFO L933 BasicCegarLoop]: 404 mSDtfsCounter, 1061 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 5299 mSolverCounterSat, 72 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1061 SdHoareTripleChecker+Valid, 446 SdHoareTripleChecker+Invalid, 5371 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 72 IncrementalHoareTripleChecker+Valid, 5299 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2022-02-15 02:34:36,402 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1061 Valid, 446 Invalid, 5371 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [72 Valid, 5299 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2022-02-15 02:34:36,403 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 827 states. [2022-02-15 02:34:36,463 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 827 to 721. [2022-02-15 02:34:36,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 721 states, 716 states have (on average 1.3910614525139664) internal successors, (996), 716 states have internal predecessors, (996), 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 02:34:36,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 721 states to 721 states and 1000 transitions. [2022-02-15 02:34:36,467 INFO L78 Accepts]: Start accepts. Automaton has 721 states and 1000 transitions. Word has length 93 [2022-02-15 02:34:36,467 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 02:34:36,467 INFO L470 AbstractCegarLoop]: Abstraction has 721 states and 1000 transitions. [2022-02-15 02:34:36,468 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 25 states have (on average 3.56) internal successors, (89), 24 states have internal predecessors, (89), 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 02:34:36,468 INFO L276 IsEmpty]: Start isEmpty. Operand 721 states and 1000 transitions. [2022-02-15 02:34:36,469 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2022-02-15 02:34:36,469 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 02:34:36,470 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 02:34:36,470 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-02-15 02:34:36,470 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 02:34:36,470 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 02:34:36,470 INFO L85 PathProgramCache]: Analyzing trace with hash -1258094710, now seen corresponding path program 1 times [2022-02-15 02:34:36,470 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 02:34:36,470 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [985353834] [2022-02-15 02:34:36,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 02:34:36,911 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 02:34:36,982 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 02:34:36,982 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2022-02-15 02:34:37,054 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 02:34:37,054 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2022-02-15 02:34:37,054 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 02:34:37,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:34:37,110 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 02:34:37,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:34:37,115 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 02:34:37,948 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 02:34:37,948 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [985353834] [2022-02-15 02:34:37,948 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [985353834] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 02:34:37,948 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 02:34:37,948 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2022-02-15 02:34:37,949 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1639489443] [2022-02-15 02:34:37,949 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 02:34:37,949 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-02-15 02:34:37,949 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 02:34:37,949 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-02-15 02:34:37,949 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=480, Unknown=0, NotChecked=0, Total=600 [2022-02-15 02:34:37,950 INFO L87 Difference]: Start difference. First operand 721 states and 1000 transitions. Second operand has 25 states, 24 states have (on average 3.75) internal successors, (90), 23 states have internal predecessors, (90), 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 02:34:39,238 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 02:34:39,239 INFO L93 Difference]: Finished difference Result 1816 states and 2609 transitions. [2022-02-15 02:34:39,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-02-15 02:34:39,239 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 24 states have (on average 3.75) internal successors, (90), 23 states have internal predecessors, (90), 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 94 [2022-02-15 02:34:39,239 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 02:34:39,242 INFO L225 Difference]: With dead ends: 1816 [2022-02-15 02:34:39,242 INFO L226 Difference]: Without dead ends: 1073 [2022-02-15 02:34:39,245 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 31 SyntacticMatches, 6 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 573 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=383, Invalid=1687, Unknown=0, NotChecked=0, Total=2070 [2022-02-15 02:34:39,245 INFO L933 BasicCegarLoop]: 195 mSDtfsCounter, 967 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 1942 mSolverCounterSat, 110 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 967 SdHoareTripleChecker+Valid, 217 SdHoareTripleChecker+Invalid, 2382 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 110 IncrementalHoareTripleChecker+Valid, 1942 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 330 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-02-15 02:34:39,245 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [967 Valid, 217 Invalid, 2382 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [110 Valid, 1942 Invalid, 0 Unknown, 330 Unchecked, 0.8s Time] [2022-02-15 02:34:39,247 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1073 states. [2022-02-15 02:34:39,333 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1073 to 926. [2022-02-15 02:34:39,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 926 states, 921 states have (on average 1.3973941368078175) internal successors, (1287), 921 states have internal predecessors, (1287), 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 02:34:39,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 926 states to 926 states and 1291 transitions. [2022-02-15 02:34:39,337 INFO L78 Accepts]: Start accepts. Automaton has 926 states and 1291 transitions. Word has length 94 [2022-02-15 02:34:39,337 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 02:34:39,337 INFO L470 AbstractCegarLoop]: Abstraction has 926 states and 1291 transitions. [2022-02-15 02:34:39,337 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 24 states have (on average 3.75) internal successors, (90), 23 states have internal predecessors, (90), 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 02:34:39,337 INFO L276 IsEmpty]: Start isEmpty. Operand 926 states and 1291 transitions. [2022-02-15 02:34:39,340 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2022-02-15 02:34:39,340 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 02:34:39,340 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 02:34:39,340 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-02-15 02:34:39,340 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 02:34:39,341 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 02:34:39,341 INFO L85 PathProgramCache]: Analyzing trace with hash 1547943946, now seen corresponding path program 1 times [2022-02-15 02:34:39,341 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 02:34:39,341 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1846766998] [2022-02-15 02:34:39,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 02:34:39,411 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 02:34:39,471 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 02:34:39,471 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-15 02:34:39,472 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-02-15 02:34:39,472 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2022-02-15 02:34:39,659 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 02:34:39,718 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 02:34:39,718 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2022-02-15 02:34:39,718 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 02:34:39,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:34:39,812 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 02:34:39,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:34:39,815 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 02:34:40,549 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 02:34:40,550 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1846766998] [2022-02-15 02:34:40,550 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1846766998] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 02:34:40,550 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 02:34:40,550 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2022-02-15 02:34:40,550 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1322623823] [2022-02-15 02:34:40,550 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 02:34:40,550 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-02-15 02:34:40,551 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 02:34:40,551 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-02-15 02:34:40,551 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=142, Invalid=560, Unknown=0, NotChecked=0, Total=702 [2022-02-15 02:34:40,551 INFO L87 Difference]: Start difference. First operand 926 states and 1291 transitions. Second operand has 26 states, 25 states have (on average 4.36) internal successors, (109), 24 states have internal predecessors, (109), 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 02:34:43,523 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 02:34:43,523 INFO L93 Difference]: Finished difference Result 2643 states and 3712 transitions. [2022-02-15 02:34:43,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-02-15 02:34:43,524 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 25 states have (on average 4.36) internal successors, (109), 24 states have internal predecessors, (109), 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 114 [2022-02-15 02:34:43,524 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 02:34:43,528 INFO L225 Difference]: With dead ends: 2643 [2022-02-15 02:34:43,528 INFO L226 Difference]: Without dead ends: 1457 [2022-02-15 02:34:43,530 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 39 SyntacticMatches, 12 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 981 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=532, Invalid=2438, Unknown=0, NotChecked=0, Total=2970 [2022-02-15 02:34:43,530 INFO L933 BasicCegarLoop]: 403 mSDtfsCounter, 1138 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 6123 mSolverCounterSat, 116 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1138 SdHoareTripleChecker+Valid, 420 SdHoareTripleChecker+Invalid, 6239 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 116 IncrementalHoareTripleChecker+Valid, 6123 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2022-02-15 02:34:43,530 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1138 Valid, 420 Invalid, 6239 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [116 Valid, 6123 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2022-02-15 02:34:43,532 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1457 states. [2022-02-15 02:34:43,643 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1457 to 1242. [2022-02-15 02:34:43,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1242 states, 1237 states have (on average 1.4244139046079225) internal successors, (1762), 1237 states have internal predecessors, (1762), 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 02:34:43,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1242 states to 1242 states and 1766 transitions. [2022-02-15 02:34:43,648 INFO L78 Accepts]: Start accepts. Automaton has 1242 states and 1766 transitions. Word has length 114 [2022-02-15 02:34:43,648 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 02:34:43,648 INFO L470 AbstractCegarLoop]: Abstraction has 1242 states and 1766 transitions. [2022-02-15 02:34:43,649 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 25 states have (on average 4.36) internal successors, (109), 24 states have internal predecessors, (109), 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 02:34:43,649 INFO L276 IsEmpty]: Start isEmpty. Operand 1242 states and 1766 transitions. [2022-02-15 02:34:43,652 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2022-02-15 02:34:43,652 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 02:34:43,652 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:34:43,652 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-02-15 02:34:43,652 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 02:34:43,652 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 02:34:43,652 INFO L85 PathProgramCache]: Analyzing trace with hash 110155248, now seen corresponding path program 1 times [2022-02-15 02:34:43,653 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 02:34:43,653 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2145885420] [2022-02-15 02:34:43,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 02:34:44,119 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 02:34:44,172 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 02:34:44,246 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 02:34:44,247 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2022-02-15 02:34:44,336 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 02:34:44,336 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2022-02-15 02:34:44,398 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 02:34:44,482 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 02:34:44,483 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2022-02-15 02:34:44,483 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 02:34:44,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:34:44,571 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 02:34:44,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:34:44,575 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 02:34:45,479 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 02:34:45,479 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2145885420] [2022-02-15 02:34:45,479 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [2145885420] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 02:34:45,479 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 02:34:45,479 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [30] imperfect sequences [] total 30 [2022-02-15 02:34:45,479 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [309291711] [2022-02-15 02:34:45,479 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 02:34:45,481 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2022-02-15 02:34:45,481 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 02:34:45,481 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2022-02-15 02:34:45,481 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=183, Invalid=687, Unknown=0, NotChecked=0, Total=870 [2022-02-15 02:34:45,482 INFO L87 Difference]: Start difference. First operand 1242 states and 1766 transitions. Second operand has 30 states, 30 states have (on average 3.966666666666667) internal successors, (119), 29 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 02:34:47,767 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 02:34:47,767 INFO L93 Difference]: Finished difference Result 3836 states and 5441 transitions. [2022-02-15 02:34:47,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-02-15 02:34:47,768 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 3.966666666666667) internal successors, (119), 29 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 02:34:47,768 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 02:34:47,775 INFO L225 Difference]: With dead ends: 3836 [2022-02-15 02:34:47,775 INFO L226 Difference]: Without dead ends: 2320 [2022-02-15 02:34:47,779 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 905 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=541, Invalid=2539, Unknown=0, NotChecked=0, Total=3080 [2022-02-15 02:34:47,779 INFO L933 BasicCegarLoop]: 162 mSDtfsCounter, 1512 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 3546 mSolverCounterSat, 62 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1512 SdHoareTripleChecker+Valid, 189 SdHoareTripleChecker+Invalid, 3608 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 62 IncrementalHoareTripleChecker+Valid, 3546 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-02-15 02:34:47,779 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1512 Valid, 189 Invalid, 3608 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [62 Valid, 3546 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-02-15 02:34:47,781 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2320 states. [2022-02-15 02:34:47,934 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2320 to 1598. [2022-02-15 02:34:47,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1598 states, 1593 states have (on average 1.4218455743879472) internal successors, (2265), 1593 states have internal predecessors, (2265), 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 02:34:47,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1598 states to 1598 states and 2269 transitions. [2022-02-15 02:34:47,939 INFO L78 Accepts]: Start accepts. Automaton has 1598 states and 2269 transitions. Word has length 123 [2022-02-15 02:34:47,939 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 02:34:47,939 INFO L470 AbstractCegarLoop]: Abstraction has 1598 states and 2269 transitions. [2022-02-15 02:34:47,940 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 3.966666666666667) internal successors, (119), 29 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 02:34:47,940 INFO L276 IsEmpty]: Start isEmpty. Operand 1598 states and 2269 transitions. [2022-02-15 02:34:47,943 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2022-02-15 02:34:47,943 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 02:34:47,943 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, 1, 1] [2022-02-15 02:34:47,943 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-02-15 02:34:47,943 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 02:34:47,944 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 02:34:47,944 INFO L85 PathProgramCache]: Analyzing trace with hash -1623949202, now seen corresponding path program 1 times [2022-02-15 02:34:47,944 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 02:34:47,944 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1957761538] [2022-02-15 02:34:47,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 02:34:48,354 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 02:34:48,397 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 02:34:48,471 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 02:34:48,472 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2022-02-15 02:34:48,552 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 02:34:48,553 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2022-02-15 02:34:48,604 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 02:34:48,673 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 02:34:48,674 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2022-02-15 02:34:48,674 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 02:34:48,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:34:48,780 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 02:34:48,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:34:48,785 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 02:34:49,630 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 02:34:49,630 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1957761538] [2022-02-15 02:34:49,630 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1957761538] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 02:34:49,630 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 02:34:49,630 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [24] imperfect sequences [] total 24 [2022-02-15 02:34:49,630 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2011367311] [2022-02-15 02:34:49,630 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 02:34:49,630 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-02-15 02:34:49,630 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 02:34:49,631 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-02-15 02:34:49,631 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=123, Invalid=477, Unknown=0, NotChecked=0, Total=600 [2022-02-15 02:34:49,631 INFO L87 Difference]: Start difference. First operand 1598 states and 2269 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 02:34:51,074 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 02:34:51,074 INFO L93 Difference]: Finished difference Result 3338 states and 4701 transitions. [2022-02-15 02:34:51,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-02-15 02:34:51,074 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 02:34:51,075 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 02:34:51,080 INFO L225 Difference]: With dead ends: 3338 [2022-02-15 02:34:51,080 INFO L226 Difference]: Without dead ends: 1754 [2022-02-15 02:34:51,084 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 58 SyntacticMatches, 8 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 556 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=347, Invalid=1545, Unknown=0, NotChecked=0, Total=1892 [2022-02-15 02:34:51,084 INFO L933 BasicCegarLoop]: 166 mSDtfsCounter, 857 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 2138 mSolverCounterSat, 95 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 857 SdHoareTripleChecker+Valid, 218 SdHoareTripleChecker+Invalid, 2617 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 95 IncrementalHoareTripleChecker+Valid, 2138 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 384 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-02-15 02:34:51,084 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [857 Valid, 218 Invalid, 2617 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [95 Valid, 2138 Invalid, 0 Unknown, 384 Unchecked, 0.9s Time] [2022-02-15 02:34:51,086 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1754 states. [2022-02-15 02:34:51,282 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1754 to 1665. [2022-02-15 02:34:51,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1665 states, 1660 states have (on average 1.4066265060240963) internal successors, (2335), 1660 states have internal predecessors, (2335), 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 02:34:51,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1665 states to 1665 states and 2339 transitions. [2022-02-15 02:34:51,288 INFO L78 Accepts]: Start accepts. Automaton has 1665 states and 2339 transitions. Word has length 123 [2022-02-15 02:34:51,288 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 02:34:51,288 INFO L470 AbstractCegarLoop]: Abstraction has 1665 states and 2339 transitions. [2022-02-15 02:34:51,288 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 02:34:51,288 INFO L276 IsEmpty]: Start isEmpty. Operand 1665 states and 2339 transitions. [2022-02-15 02:34:51,291 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2022-02-15 02:34:51,291 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 02:34:51,292 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:34:51,292 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-02-15 02:34:51,292 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 02:34:51,292 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 02:34:51,292 INFO L85 PathProgramCache]: Analyzing trace with hash 954661998, now seen corresponding path program 1 times [2022-02-15 02:34:51,292 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 02:34:51,292 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1322930208] [2022-02-15 02:34:51,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 02:34:51,298 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-15 02:34:51,298 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-02-15 02:34:51,298 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 02:34:51,299 INFO L274 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-15 02:34:51,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:34:51,327 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 02:34:51,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:34:51,330 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 02:34:51,330 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 02:34:51,330 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1322930208] [2022-02-15 02:34:51,330 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1322930208] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 02:34:51,330 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 02:34:51,331 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-02-15 02:34:51,331 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1314596407] [2022-02-15 02:34:51,331 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 02:34:51,331 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-02-15 02:34:51,331 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 02:34:51,331 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-02-15 02:34:51,332 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-02-15 02:34:51,332 INFO L87 Difference]: Start difference. First operand 1665 states and 2339 transitions. Second operand has 4 states, 4 states have (on average 24.0) internal successors, (96), 3 states have internal predecessors, (96), 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 02:34:51,869 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 02:34:51,869 INFO L93 Difference]: Finished difference Result 4741 states and 6718 transitions. [2022-02-15 02:34:51,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-02-15 02:34:51,870 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 24.0) internal successors, (96), 3 states have internal predecessors, (96), 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 124 [2022-02-15 02:34:51,870 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 02:34:51,880 INFO L225 Difference]: With dead ends: 4741 [2022-02-15 02:34:51,880 INFO L226 Difference]: Without dead ends: 3108 [2022-02-15 02:34:51,884 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 02:34:51,884 INFO L933 BasicCegarLoop]: 319 mSDtfsCounter, 438 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 197 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 438 SdHoareTripleChecker+Valid, 326 SdHoareTripleChecker+Invalid, 203 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 197 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-15 02:34:51,884 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [438 Valid, 326 Invalid, 203 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 197 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-15 02:34:51,887 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3108 states. [2022-02-15 02:34:52,293 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3108 to 3091. [2022-02-15 02:34:52,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3091 states, 3086 states have (on average 1.406351263771873) internal successors, (4340), 3086 states have internal predecessors, (4340), 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 02:34:52,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3091 states to 3091 states and 4344 transitions. [2022-02-15 02:34:52,303 INFO L78 Accepts]: Start accepts. Automaton has 3091 states and 4344 transitions. Word has length 124 [2022-02-15 02:34:52,303 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 02:34:52,303 INFO L470 AbstractCegarLoop]: Abstraction has 3091 states and 4344 transitions. [2022-02-15 02:34:52,303 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.0) internal successors, (96), 3 states have internal predecessors, (96), 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 02:34:52,303 INFO L276 IsEmpty]: Start isEmpty. Operand 3091 states and 4344 transitions. [2022-02-15 02:34:52,309 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2022-02-15 02:34:52,309 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 02:34:52,309 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, 1, 1] [2022-02-15 02:34:52,309 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-02-15 02:34:52,309 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 02:34:52,309 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 02:34:52,310 INFO L85 PathProgramCache]: Analyzing trace with hash 360534986, now seen corresponding path program 1 times [2022-02-15 02:34:52,310 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 02:34:52,310 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [689734819] [2022-02-15 02:34:52,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 02:34:55,461 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 02:34:55,505 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 02:34:55,505 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-15 02:34:55,505 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-02-15 02:34:55,505 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2022-02-15 02:34:55,625 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 02:34:55,625 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2022-02-15 02:34:55,626 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-15 02:34:55,626 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-02-15 02:34:55,707 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 5 AssignedVariables, 1 ReadonlyVariables, Eigenvalues: {0={1=5}, 1={1=2}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:34:55,708 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2022-02-15 02:34:55,708 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 02:34:55,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:34:55,780 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 02:34:55,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:34:55,784 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 02:34:57,461 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 02:34:57,461 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [689734819] [2022-02-15 02:34:57,461 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [689734819] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 02:34:57,461 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 02:34:57,461 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [31] imperfect sequences [] total 31 [2022-02-15 02:34:57,461 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2104830696] [2022-02-15 02:34:57,461 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 02:34:57,461 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2022-02-15 02:34:57,461 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 02:34:57,462 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2022-02-15 02:34:57,462 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=197, Invalid=795, Unknown=0, NotChecked=0, Total=992 [2022-02-15 02:34:57,462 INFO L87 Difference]: Start difference. First operand 3091 states and 4344 transitions. Second operand has 31 states, 31 states have (on average 3.903225806451613) internal successors, (121), 30 states have internal predecessors, (121), 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 02:35:00,000 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 02:35:00,000 INFO L93 Difference]: Finished difference Result 8432 states and 11950 transitions. [2022-02-15 02:35:00,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-02-15 02:35:00,001 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 3.903225806451613) internal successors, (121), 30 states have internal predecessors, (121), 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 125 [2022-02-15 02:35:00,001 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 02:35:00,015 INFO L225 Difference]: With dead ends: 8432 [2022-02-15 02:35:00,015 INFO L226 Difference]: Without dead ends: 5437 [2022-02-15 02:35:00,021 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 19 SyntacticMatches, 34 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1776 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=556, Invalid=2866, Unknown=0, NotChecked=0, Total=3422 [2022-02-15 02:35:00,022 INFO L933 BasicCegarLoop]: 188 mSDtfsCounter, 651 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 3483 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 651 SdHoareTripleChecker+Valid, 250 SdHoareTripleChecker+Invalid, 3523 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 3483 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-02-15 02:35:00,022 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [651 Valid, 250 Invalid, 3523 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 3483 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-02-15 02:35:00,025 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5437 states. [2022-02-15 02:35:00,535 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5437 to 3764. [2022-02-15 02:35:00,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3764 states, 3759 states have (on average 1.409417398244214) internal successors, (5298), 3759 states have internal predecessors, (5298), 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 02:35:00,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3764 states to 3764 states and 5302 transitions. [2022-02-15 02:35:00,548 INFO L78 Accepts]: Start accepts. Automaton has 3764 states and 5302 transitions. Word has length 125 [2022-02-15 02:35:00,548 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 02:35:00,548 INFO L470 AbstractCegarLoop]: Abstraction has 3764 states and 5302 transitions. [2022-02-15 02:35:00,548 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 3.903225806451613) internal successors, (121), 30 states have internal predecessors, (121), 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 02:35:00,549 INFO L276 IsEmpty]: Start isEmpty. Operand 3764 states and 5302 transitions. [2022-02-15 02:35:00,556 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2022-02-15 02:35:00,556 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 02:35:00,556 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, 1, 1] [2022-02-15 02:35:00,556 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-02-15 02:35:00,557 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 02:35:00,557 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 02:35:00,557 INFO L85 PathProgramCache]: Analyzing trace with hash -60581258, now seen corresponding path program 1 times [2022-02-15 02:35:00,557 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 02:35:00,558 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [383430512] [2022-02-15 02:35:00,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 02:35:00,959 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 02:35:31,719 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 3 HavocedVariables, 9 AssignedVariables, 1 ReadonlyVariables, Eigenvalues: {0={1=7, 2=1}, 1={1=2}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:35:31,791 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 02:35:31,791 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2022-02-15 02:35:31,881 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 02:35:31,881 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2022-02-15 02:35:31,956 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 02:36:02,529 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 3 HavocedVariables, 9 AssignedVariables, 1 ReadonlyVariables, Eigenvalues: {0={1=7, 2=1}, 1={1=2}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:36:02,529 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2022-02-15 02:36:02,529 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 02:36:02,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:36:02,597 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 02:36:02,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:36:02,601 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 02:36:03,827 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 02:36:03,827 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [383430512] [2022-02-15 02:36:03,827 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [383430512] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 02:36:03,827 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 02:36:03,828 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [31] imperfect sequences [] total 31 [2022-02-15 02:36:03,828 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1755302292] [2022-02-15 02:36:03,828 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 02:36:03,828 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2022-02-15 02:36:03,828 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 02:36:03,828 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2022-02-15 02:36:03,829 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=158, Invalid=834, Unknown=0, NotChecked=0, Total=992 [2022-02-15 02:36:03,829 INFO L87 Difference]: Start difference. First operand 3764 states and 5302 transitions. Second operand has 31 states, 30 states have (on average 4.366666666666666) internal successors, (131), 29 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 02:36:06,321 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 02:36:06,322 INFO L93 Difference]: Finished difference Result 7609 states and 10701 transitions. [2022-02-15 02:36:06,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-02-15 02:36:06,322 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 30 states have (on average 4.366666666666666) internal successors, (131), 29 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 02:36:06,323 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 02:36:06,335 INFO L225 Difference]: With dead ends: 7609 [2022-02-15 02:36:06,335 INFO L226 Difference]: Without dead ends: 3999 [2022-02-15 02:36:06,343 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 127 GetRequests, 63 SyntacticMatches, 6 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1078 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=496, Invalid=3044, Unknown=0, NotChecked=0, Total=3540 [2022-02-15 02:36:06,343 INFO L933 BasicCegarLoop]: 184 mSDtfsCounter, 767 mSDsluCounter, 77 mSDsCounter, 0 mSdLazyCounter, 3317 mSolverCounterSat, 82 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 767 SdHoareTripleChecker+Valid, 261 SdHoareTripleChecker+Invalid, 3745 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 82 IncrementalHoareTripleChecker+Valid, 3317 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 346 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-02-15 02:36:06,343 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [767 Valid, 261 Invalid, 3745 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [82 Valid, 3317 Invalid, 0 Unknown, 346 Unchecked, 1.4s Time] [2022-02-15 02:36:06,346 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3999 states. [2022-02-15 02:36:06,742 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3999 to 3850. [2022-02-15 02:36:06,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3850 states, 3845 states have (on average 1.4010403120936281) internal successors, (5387), 3845 states have internal predecessors, (5387), 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 02:36:06,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3850 states to 3850 states and 5391 transitions. [2022-02-15 02:36:06,753 INFO L78 Accepts]: Start accepts. Automaton has 3850 states and 5391 transitions. Word has length 135 [2022-02-15 02:36:06,753 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 02:36:06,753 INFO L470 AbstractCegarLoop]: Abstraction has 3850 states and 5391 transitions. [2022-02-15 02:36:06,753 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 30 states have (on average 4.366666666666666) internal successors, (131), 29 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 02:36:06,753 INFO L276 IsEmpty]: Start isEmpty. Operand 3850 states and 5391 transitions. [2022-02-15 02:36:06,761 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2022-02-15 02:36:06,761 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 02:36:06,761 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, 1] [2022-02-15 02:36:06,761 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-02-15 02:36:06,761 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 02:36:06,762 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 02:36:06,762 INFO L85 PathProgramCache]: Analyzing trace with hash 131725076, now seen corresponding path program 1 times [2022-02-15 02:36:06,762 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 02:36:06,762 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [553357156] [2022-02-15 02:36:06,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 02:36:06,769 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-15 02:36:06,770 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-02-15 02:36:06,770 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 02:36:06,771 INFO L274 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-15 02:36:06,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:36:06,805 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 02:36:06,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:36:06,808 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 02:36:06,808 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 02:36:06,808 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [553357156] [2022-02-15 02:36:06,808 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [553357156] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 02:36:06,808 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 02:36:06,808 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-02-15 02:36:06,809 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1018970936] [2022-02-15 02:36:06,809 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 02:36:06,809 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-02-15 02:36:06,809 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 02:36:06,809 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-02-15 02:36:06,809 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-02-15 02:36:06,810 INFO L87 Difference]: Start difference. First operand 3850 states and 5391 transitions. Second operand has 4 states, 4 states have (on average 28.5) internal successors, (114), 3 states have internal predecessors, (114), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 02:36:07,209 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 02:36:07,210 INFO L93 Difference]: Finished difference Result 7460 states and 10528 transitions. [2022-02-15 02:36:07,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-02-15 02:36:07,210 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 28.5) internal successors, (114), 3 states have internal predecessors, (114), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 136 [2022-02-15 02:36:07,210 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 02:36:07,222 INFO L225 Difference]: With dead ends: 7460 [2022-02-15 02:36:07,222 INFO L226 Difference]: Without dead ends: 3850 [2022-02-15 02:36:07,227 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 02:36:07,228 INFO L933 BasicCegarLoop]: 218 mSDtfsCounter, 334 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 334 SdHoareTripleChecker+Valid, 225 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-02-15 02:36:07,228 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [334 Valid, 225 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-15 02:36:07,231 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3850 states. [2022-02-15 02:36:07,638 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3850 to 3850. [2022-02-15 02:36:07,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3850 states, 3845 states have (on average 1.377633289986996) internal successors, (5297), 3845 states have internal predecessors, (5297), 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 02:36:07,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3850 states to 3850 states and 5301 transitions. [2022-02-15 02:36:07,648 INFO L78 Accepts]: Start accepts. Automaton has 3850 states and 5301 transitions. Word has length 136 [2022-02-15 02:36:07,648 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 02:36:07,648 INFO L470 AbstractCegarLoop]: Abstraction has 3850 states and 5301 transitions. [2022-02-15 02:36:07,648 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 28.5) internal successors, (114), 3 states have internal predecessors, (114), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 02:36:07,648 INFO L276 IsEmpty]: Start isEmpty. Operand 3850 states and 5301 transitions. [2022-02-15 02:36:07,655 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2022-02-15 02:36:07,655 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 02:36:07,655 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, 1] [2022-02-15 02:36:07,656 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-02-15 02:36:07,656 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 02:36:07,656 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 02:36:07,656 INFO L85 PathProgramCache]: Analyzing trace with hash 1608629923, now seen corresponding path program 1 times [2022-02-15 02:36:07,656 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 02:36:07,656 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1970684601] [2022-02-15 02:36:07,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 02:36:07,664 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-15 02:36:07,664 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-02-15 02:36:07,664 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 02:36:07,665 INFO L274 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-15 02:36:07,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:36:07,692 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 02:36:07,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:36:07,696 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 02:36:07,696 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 02:36:07,696 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1970684601] [2022-02-15 02:36:07,696 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1970684601] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 02:36:07,696 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 02:36:07,696 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-02-15 02:36:07,696 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [577585229] [2022-02-15 02:36:07,696 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 02:36:07,697 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-02-15 02:36:07,697 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 02:36:07,697 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-02-15 02:36:07,697 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-02-15 02:36:07,697 INFO L87 Difference]: Start difference. First operand 3850 states and 5301 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 02:36:08,142 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 02:36:08,142 INFO L93 Difference]: Finished difference Result 7544 states and 10452 transitions. [2022-02-15 02:36:08,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-02-15 02:36:08,143 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 137 [2022-02-15 02:36:08,143 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 02:36:08,154 INFO L225 Difference]: With dead ends: 7544 [2022-02-15 02:36:08,155 INFO L226 Difference]: Without dead ends: 3934 [2022-02-15 02:36:08,159 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 02:36:08,159 INFO L933 BasicCegarLoop]: 204 mSDtfsCounter, 350 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 350 SdHoareTripleChecker+Valid, 211 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-02-15 02:36:08,160 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [350 Valid, 211 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-15 02:36:08,162 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3934 states. [2022-02-15 02:36:08,562 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3934 to 3770. [2022-02-15 02:36:08,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3770 states, 3765 states have (on average 1.3654714475431606) internal successors, (5141), 3765 states have internal predecessors, (5141), 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 02:36:08,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3770 states to 3770 states and 5145 transitions. [2022-02-15 02:36:08,572 INFO L78 Accepts]: Start accepts. Automaton has 3770 states and 5145 transitions. Word has length 137 [2022-02-15 02:36:08,572 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 02:36:08,572 INFO L470 AbstractCegarLoop]: Abstraction has 3770 states and 5145 transitions. [2022-02-15 02:36:08,573 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 02:36:08,573 INFO L276 IsEmpty]: Start isEmpty. Operand 3770 states and 5145 transitions. [2022-02-15 02:36:08,578 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2022-02-15 02:36:08,578 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 02:36:08,578 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, 1, 1] [2022-02-15 02:36:08,578 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-02-15 02:36:08,578 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 02:36:08,579 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 02:36:08,579 INFO L85 PathProgramCache]: Analyzing trace with hash -887194732, now seen corresponding path program 1 times [2022-02-15 02:36:08,579 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 02:36:08,579 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [93867679] [2022-02-15 02:36:08,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 02:36:08,965 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 02:36:39,680 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 3 HavocedVariables, 9 AssignedVariables, 1 ReadonlyVariables, Eigenvalues: {0={1=7, 2=1}, 1={1=2}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:36:39,752 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 02:36:39,753 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2022-02-15 02:36:39,820 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 02:37:10,401 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 3 HavocedVariables, 9 AssignedVariables, 1 ReadonlyVariables, Eigenvalues: {0={1=7, 2=1}, 1={1=2}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:37:10,402 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2022-02-15 02:37:10,402 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 02:37:10,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:37:10,469 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 02:37:10,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:37:10,473 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 02:37:11,703 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 02:37:11,704 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [93867679] [2022-02-15 02:37:11,704 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [93867679] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 02:37:11,704 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 02:37:11,704 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [35] imperfect sequences [] total 35 [2022-02-15 02:37:11,704 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1415734111] [2022-02-15 02:37:11,704 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 02:37:11,705 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2022-02-15 02:37:11,706 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 02:37:11,706 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2022-02-15 02:37:11,707 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=223, Invalid=1037, Unknown=0, NotChecked=0, Total=1260 [2022-02-15 02:37:11,707 INFO L87 Difference]: Start difference. First operand 3770 states and 5145 transitions. Second operand has 35 states, 35 states have (on average 3.8285714285714287) internal successors, (134), 34 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 02:37:16,743 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 02:37:16,744 INFO L93 Difference]: Finished difference Result 13244 states and 18318 transitions. [2022-02-15 02:37:16,744 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2022-02-15 02:37:16,744 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 3.8285714285714287) internal successors, (134), 34 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 138 [2022-02-15 02:37:16,744 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 02:37:16,761 INFO L225 Difference]: With dead ends: 13244 [2022-02-15 02:37:16,761 INFO L226 Difference]: Without dead ends: 9057 [2022-02-15 02:37:16,772 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 129 GetRequests, 63 SyntacticMatches, 1 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1406 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=631, Invalid=3791, Unknown=0, NotChecked=0, Total=4422 [2022-02-15 02:37:16,773 INFO L933 BasicCegarLoop]: 406 mSDtfsCounter, 1217 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 8377 mSolverCounterSat, 97 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1217 SdHoareTripleChecker+Valid, 468 SdHoareTripleChecker+Invalid, 8474 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 97 IncrementalHoareTripleChecker+Valid, 8377 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2022-02-15 02:37:16,773 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1217 Valid, 468 Invalid, 8474 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [97 Valid, 8377 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2022-02-15 02:37:16,779 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9057 states. [2022-02-15 02:37:17,364 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9057 to 5280. [2022-02-15 02:37:17,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5280 states, 5275 states have (on average 1.387867298578199) internal successors, (7321), 5275 states have internal predecessors, (7321), 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 02:37:17,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5280 states to 5280 states and 7325 transitions. [2022-02-15 02:37:17,374 INFO L78 Accepts]: Start accepts. Automaton has 5280 states and 7325 transitions. Word has length 138 [2022-02-15 02:37:17,374 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 02:37:17,374 INFO L470 AbstractCegarLoop]: Abstraction has 5280 states and 7325 transitions. [2022-02-15 02:37:17,374 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 3.8285714285714287) internal successors, (134), 34 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 02:37:17,374 INFO L276 IsEmpty]: Start isEmpty. Operand 5280 states and 7325 transitions. [2022-02-15 02:37:17,379 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2022-02-15 02:37:17,379 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 02:37:17,379 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, 1] [2022-02-15 02:37:17,379 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-02-15 02:37:17,379 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 02:37:17,380 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 02:37:17,380 INFO L85 PathProgramCache]: Analyzing trace with hash -1008790142, now seen corresponding path program 1 times [2022-02-15 02:37:17,380 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 02:37:17,380 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [648879853] [2022-02-15 02:37:17,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 02:37:20,378 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 02:43:24,553 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 3 HavocedVariables, 10 AssignedVariables, 1 ReadonlyVariables, Eigenvalues: {0={1=8, 2=1}, 1={1=2}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:43:24,666 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 02:43:24,667 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION