/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/acceleratedInterpolationQvasr_64.epf -i ../../../trunk/examples/svcomp/openssl-simplified/s3_srvr_14.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-b030c9e [2022-03-20 23:39:30,513 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-03-20 23:39:30,514 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-03-20 23:39:30,538 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-03-20 23:39:30,567 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-03-20 23:39:30,572 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-03-20 23:39:30,575 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-03-20 23:39:30,575 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationQvasr_64.epf [2022-03-20 23:39:30,584 INFO L113 SettingsManager]: Loading preferences was successful [2022-03-20 23:39:30,585 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-03-20 23:39:30,586 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-03-20 23:39:30,587 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-03-20 23:39:30,587 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-03-20 23:39:30,587 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-03-20 23:39:30,587 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-03-20 23:39:30,587 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-03-20 23:39:30,587 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-03-20 23:39:30,588 INFO L138 SettingsManager]: * Use constant arrays=true [2022-03-20 23:39:30,588 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-03-20 23:39:30,588 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-03-20 23:39:30,588 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-03-20 23:39:30,588 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-03-20 23:39:30,588 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-03-20 23:39:30,588 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-03-20 23:39:30,588 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-03-20 23:39:30,589 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_NestedInterpolation [2022-03-20 23:39:30,589 INFO L138 SettingsManager]: * Trace refinement strategy=ACCELERATED_INTERPOLATION [2022-03-20 23:39:30,589 INFO L138 SettingsManager]: * Trace refinement strategy used in Accelerated Interpolation=CAMEL [2022-03-20 23:39:30,589 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-03-20 23:39:30,589 INFO L138 SettingsManager]: * Loop acceleration method that is used by accelerated interpolation=QVASR [2022-03-20 23:39:30,589 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-03-20 23:39:30,792 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-03-20 23:39:30,817 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-03-20 23:39:30,819 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-03-20 23:39:30,820 INFO L271 PluginConnector]: Initializing CDTParser... [2022-03-20 23:39:30,820 INFO L275 PluginConnector]: CDTParser initialized [2022-03-20 23:39:30,822 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/openssl-simplified/s3_srvr_14.cil.c [2022-03-20 23:39:30,866 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1ca509d94/4137912941a9489e94ac212b6dc0dccf/FLAG46d0275f5 [2022-03-20 23:39:31,282 INFO L306 CDTParser]: Found 1 translation units. [2022-03-20 23:39:31,282 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/openssl-simplified/s3_srvr_14.cil.c [2022-03-20 23:39:31,293 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1ca509d94/4137912941a9489e94ac212b6dc0dccf/FLAG46d0275f5 [2022-03-20 23:39:31,305 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1ca509d94/4137912941a9489e94ac212b6dc0dccf [2022-03-20 23:39:31,307 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-03-20 23:39:31,308 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2022-03-20 23:39:31,309 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-03-20 23:39:31,309 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-03-20 23:39:31,312 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-03-20 23:39:31,312 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.03 11:39:31" (1/1) ... [2022-03-20 23:39:31,313 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5aad4897 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 11:39:31, skipping insertion in model container [2022-03-20 23:39:31,313 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.03 11:39:31" (1/1) ... [2022-03-20 23:39:31,318 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-03-20 23:39:31,354 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-03-20 23:39:31,577 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_14.cil.c[45163,45176] [2022-03-20 23:39:31,581 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-03-20 23:39:31,585 INFO L203 MainTranslator]: Completed pre-run [2022-03-20 23:39:31,613 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_14.cil.c[45163,45176] [2022-03-20 23:39:31,615 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-03-20 23:39:31,625 INFO L208 MainTranslator]: Completed translation [2022-03-20 23:39:31,625 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 11:39:31 WrapperNode [2022-03-20 23:39:31,625 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-03-20 23:39:31,626 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-03-20 23:39:31,626 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-03-20 23:39:31,626 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-03-20 23:39:31,633 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 11:39:31" (1/1) ... [2022-03-20 23:39:31,633 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 11:39:31" (1/1) ... [2022-03-20 23:39:31,649 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 11:39:31" (1/1) ... [2022-03-20 23:39:31,649 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 11:39:31" (1/1) ... [2022-03-20 23:39:31,656 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 11:39:31" (1/1) ... [2022-03-20 23:39:31,664 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 11:39:31" (1/1) ... [2022-03-20 23:39:31,665 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 11:39:31" (1/1) ... [2022-03-20 23:39:31,667 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-03-20 23:39:31,668 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-03-20 23:39:31,668 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-03-20 23:39:31,668 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-03-20 23:39:31,669 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 11:39:31" (1/1) ... [2022-03-20 23:39:31,677 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-03-20 23:39:31,685 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-20 23:39:31,693 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-03-20 23:39:31,699 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-03-20 23:39:31,721 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2022-03-20 23:39:31,721 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-03-20 23:39:31,721 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2022-03-20 23:39:31,721 INFO L138 BoogieDeclarations]: Found implementation of procedure ssl3_accept [2022-03-20 23:39:31,722 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2022-03-20 23:39:31,722 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2022-03-20 23:39:31,722 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2022-03-20 23:39:31,722 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2022-03-20 23:39:31,722 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-03-20 23:39:31,722 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2022-03-20 23:39:31,722 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2022-03-20 23:39:31,722 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_long [2022-03-20 23:39:31,722 INFO L130 BoogieDeclarations]: Found specification of procedure ssl3_accept [2022-03-20 23:39:31,723 INFO L130 BoogieDeclarations]: Found specification of procedure main [2022-03-20 23:39:31,723 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2022-03-20 23:39:31,723 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-03-20 23:39:31,723 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-03-20 23:39:31,723 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-03-20 23:39:31,723 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-03-20 23:39:31,723 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-03-20 23:39:31,820 INFO L234 CfgBuilder]: Building ICFG [2022-03-20 23:39:31,821 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-03-20 23:39:31,889 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-20 23:39:32,218 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##90: assume false; [2022-03-20 23:39:32,218 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##91: assume !false; [2022-03-20 23:39:32,222 INFO L275 CfgBuilder]: Performing block encoding [2022-03-20 23:39:32,227 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-03-20 23:39:32,227 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-03-20 23:39:32,228 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.03 11:39:32 BoogieIcfgContainer [2022-03-20 23:39:32,229 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-03-20 23:39:32,230 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-03-20 23:39:32,230 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-03-20 23:39:32,232 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-03-20 23:39:32,232 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.03 11:39:31" (1/3) ... [2022-03-20 23:39:32,233 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6473b605 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.03 11:39:32, skipping insertion in model container [2022-03-20 23:39:32,233 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 11:39:31" (2/3) ... [2022-03-20 23:39:32,233 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6473b605 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.03 11:39:32, skipping insertion in model container [2022-03-20 23:39:32,233 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.03 11:39:32" (3/3) ... [2022-03-20 23:39:32,234 INFO L111 eAbstractionObserver]: Analyzing ICFG s3_srvr_14.cil.c [2022-03-20 23:39:32,237 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2022-03-20 23:39:32,238 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-03-20 23:39:32,269 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-03-20 23:39:32,273 INFO L340 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=Craig_NestedInterpolation, 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 [2022-03-20 23:39:32,273 INFO L341 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-03-20 23:39:32,291 INFO L276 IsEmpty]: Start isEmpty. Operand has 160 states, 152 states have (on average 1.730263157894737) internal successors, (263), 153 states have internal predecessors, (263), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-03-20 23:39:32,296 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-03-20 23:39:32,297 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 23:39:32,297 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 23:39:32,297 INFO L403 AbstractCegarLoop]: === Iteration 1 === Targeting ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 23:39:32,300 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 23:39:32,300 INFO L85 PathProgramCache]: Analyzing trace with hash -242326358, now seen corresponding path program 1 times [2022-03-20 23:39:32,306 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-20 23:39:32,306 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1979427331] [2022-03-20 23:39:32,313 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-20 23:39:32,313 INFO L85 PathProgramCache]: Analyzing trace with hash -242326358, now seen corresponding path program 2 times [2022-03-20 23:39:32,315 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 23:39:32,315 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1154570924] [2022-03-20 23:39:32,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 23:39:32,316 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 23:39:32,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 23:39:32,518 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 23:39:32,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 23:39:32,535 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 23:39:32,536 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 23:39:32,536 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1154570924] [2022-03-20 23:39:32,536 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1154570924] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 23:39:32,537 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 23:39:32,537 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-03-20 23:39:32,538 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-20 23:39:32,538 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1979427331] [2022-03-20 23:39:32,539 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1979427331] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 23:39:32,539 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 23:39:32,539 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-03-20 23:39:32,539 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1220610032] [2022-03-20 23:39:32,539 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 23:39:32,542 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-03-20 23:39:32,542 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-20 23:39:32,560 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-03-20 23:39:32,560 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-03-20 23:39:32,562 INFO L87 Difference]: Start difference. First operand has 160 states, 152 states have (on average 1.730263157894737) internal successors, (263), 153 states have internal predecessors, (263), 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 6.25) internal successors, (25), 3 states have internal predecessors, (25), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-20 23:39:32,911 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 23:39:32,911 INFO L93 Difference]: Finished difference Result 445 states and 761 transitions. [2022-03-20 23:39:32,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-03-20 23:39:32,914 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.25) internal successors, (25), 3 states have internal predecessors, (25), 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 29 [2022-03-20 23:39:32,914 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 23:39:32,926 INFO L225 Difference]: With dead ends: 445 [2022-03-20 23:39:32,926 INFO L226 Difference]: Without dead ends: 272 [2022-03-20 23:39:32,929 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-03-20 23:39:32,932 INFO L913 BasicCegarLoop]: 265 mSDtfsCounter, 717 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 262 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 719 SdHoareTripleChecker+Valid, 274 SdHoareTripleChecker+Invalid, 265 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 262 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-20 23:39:32,933 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [719 Valid, 274 Invalid, 265 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 262 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-03-20 23:39:32,944 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 272 states. [2022-03-20 23:39:32,983 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 272 to 270. [2022-03-20 23:39:32,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 270 states, 265 states have (on average 1.5660377358490567) internal successors, (415), 265 states have internal predecessors, (415), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-20 23:39:32,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 270 states to 270 states and 419 transitions. [2022-03-20 23:39:32,988 INFO L78 Accepts]: Start accepts. Automaton has 270 states and 419 transitions. Word has length 29 [2022-03-20 23:39:32,988 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 23:39:32,989 INFO L478 AbstractCegarLoop]: Abstraction has 270 states and 419 transitions. [2022-03-20 23:39:32,989 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.25) internal successors, (25), 3 states have internal predecessors, (25), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-20 23:39:32,989 INFO L276 IsEmpty]: Start isEmpty. Operand 270 states and 419 transitions. [2022-03-20 23:39:32,990 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-03-20 23:39:32,990 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 23:39:32,990 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 23:39:32,991 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-03-20 23:39:32,991 INFO L403 AbstractCegarLoop]: === Iteration 2 === Targeting ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 23:39:32,992 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 23:39:32,992 INFO L85 PathProgramCache]: Analyzing trace with hash -1753118860, now seen corresponding path program 1 times [2022-03-20 23:39:32,992 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-20 23:39:32,992 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [327617957] [2022-03-20 23:39:32,993 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-20 23:39:32,993 INFO L85 PathProgramCache]: Analyzing trace with hash -1753118860, now seen corresponding path program 2 times [2022-03-20 23:39:32,993 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 23:39:32,994 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [659436594] [2022-03-20 23:39:32,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 23:39:32,994 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 23:39:33,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 23:39:33,093 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 23:39:33,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 23:39:33,104 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 23:39:33,104 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 23:39:33,104 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [659436594] [2022-03-20 23:39:33,104 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [659436594] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 23:39:33,104 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 23:39:33,104 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-03-20 23:39:33,105 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-20 23:39:33,105 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [327617957] [2022-03-20 23:39:33,105 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [327617957] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 23:39:33,105 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 23:39:33,105 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-03-20 23:39:33,105 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [664276833] [2022-03-20 23:39:33,105 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 23:39:33,106 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-03-20 23:39:33,106 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-20 23:39:33,106 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-03-20 23:39:33,106 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-03-20 23:39:33,106 INFO L87 Difference]: Start difference. First operand 270 states and 419 transitions. Second operand has 5 states, 5 states have (on average 5.2) internal successors, (26), 4 states have internal predecessors, (26), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-20 23:39:33,377 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 23:39:33,377 INFO L93 Difference]: Finished difference Result 350 states and 531 transitions. [2022-03-20 23:39:33,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-03-20 23:39:33,378 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.2) internal successors, (26), 4 states have internal predecessors, (26), 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 30 [2022-03-20 23:39:33,378 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 23:39:33,379 INFO L225 Difference]: With dead ends: 350 [2022-03-20 23:39:33,379 INFO L226 Difference]: Without dead ends: 348 [2022-03-20 23:39:33,380 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-03-20 23:39:33,380 INFO L913 BasicCegarLoop]: 179 mSDtfsCounter, 439 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 352 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 439 SdHoareTripleChecker+Valid, 191 SdHoareTripleChecker+Invalid, 368 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 352 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-20 23:39:33,381 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [439 Valid, 191 Invalid, 368 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 352 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-03-20 23:39:33,382 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 348 states. [2022-03-20 23:39:33,398 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 348 to 288. [2022-03-20 23:39:33,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 288 states, 283 states have (on average 1.558303886925795) internal successors, (441), 283 states have internal predecessors, (441), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-20 23:39:33,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 288 states to 288 states and 445 transitions. [2022-03-20 23:39:33,400 INFO L78 Accepts]: Start accepts. Automaton has 288 states and 445 transitions. Word has length 30 [2022-03-20 23:39:33,400 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 23:39:33,400 INFO L478 AbstractCegarLoop]: Abstraction has 288 states and 445 transitions. [2022-03-20 23:39:33,400 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.2) internal successors, (26), 4 states have internal predecessors, (26), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-20 23:39:33,400 INFO L276 IsEmpty]: Start isEmpty. Operand 288 states and 445 transitions. [2022-03-20 23:39:33,401 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2022-03-20 23:39:33,401 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 23:39:33,401 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 23:39:33,401 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-03-20 23:39:33,401 INFO L403 AbstractCegarLoop]: === Iteration 3 === Targeting ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 23:39:33,402 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 23:39:33,402 INFO L85 PathProgramCache]: Analyzing trace with hash 119204085, now seen corresponding path program 1 times [2022-03-20 23:39:33,402 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-20 23:39:33,402 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [404502022] [2022-03-20 23:39:33,402 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-20 23:39:33,402 INFO L85 PathProgramCache]: Analyzing trace with hash 119204085, now seen corresponding path program 2 times [2022-03-20 23:39:33,403 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 23:39:33,403 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1720303577] [2022-03-20 23:39:33,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 23:39:33,403 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 23:39:33,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 23:39:33,441 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 23:39:33,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 23:39:33,446 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 23:39:33,446 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 23:39:33,446 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1720303577] [2022-03-20 23:39:33,446 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1720303577] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 23:39:33,446 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 23:39:33,446 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-03-20 23:39:33,447 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-20 23:39:33,447 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [404502022] [2022-03-20 23:39:33,447 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [404502022] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 23:39:33,447 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 23:39:33,447 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-03-20 23:39:33,447 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1039344668] [2022-03-20 23:39:33,447 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 23:39:33,447 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-03-20 23:39:33,447 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-20 23:39:33,448 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-03-20 23:39:33,448 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-03-20 23:39:33,448 INFO L87 Difference]: Start difference. First operand 288 states and 445 transitions. Second operand has 5 states, 5 states have (on average 5.4) internal successors, (27), 4 states have internal predecessors, (27), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-20 23:39:33,710 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 23:39:33,710 INFO L93 Difference]: Finished difference Result 337 states and 514 transitions. [2022-03-20 23:39:33,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-03-20 23:39:33,711 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.4) internal successors, (27), 4 states have internal predecessors, (27), 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 31 [2022-03-20 23:39:33,711 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 23:39:33,713 INFO L225 Difference]: With dead ends: 337 [2022-03-20 23:39:33,713 INFO L226 Difference]: Without dead ends: 335 [2022-03-20 23:39:33,713 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-03-20 23:39:33,715 INFO L913 BasicCegarLoop]: 169 mSDtfsCounter, 431 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 354 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 431 SdHoareTripleChecker+Valid, 181 SdHoareTripleChecker+Invalid, 367 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 354 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-20 23:39:33,719 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [431 Valid, 181 Invalid, 367 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 354 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-03-20 23:39:33,720 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 335 states. [2022-03-20 23:39:33,746 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 335 to 278. [2022-03-20 23:39:33,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 278 states, 273 states have (on average 1.5677655677655677) internal successors, (428), 273 states have internal predecessors, (428), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-20 23:39:33,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 278 states to 278 states and 432 transitions. [2022-03-20 23:39:33,748 INFO L78 Accepts]: Start accepts. Automaton has 278 states and 432 transitions. Word has length 31 [2022-03-20 23:39:33,748 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 23:39:33,748 INFO L478 AbstractCegarLoop]: Abstraction has 278 states and 432 transitions. [2022-03-20 23:39:33,748 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.4) internal successors, (27), 4 states have internal predecessors, (27), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-20 23:39:33,748 INFO L276 IsEmpty]: Start isEmpty. Operand 278 states and 432 transitions. [2022-03-20 23:39:33,749 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2022-03-20 23:39:33,749 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 23:39:33,749 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 23:39:33,749 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-03-20 23:39:33,750 INFO L403 AbstractCegarLoop]: === Iteration 4 === Targeting ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 23:39:33,750 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 23:39:33,750 INFO L85 PathProgramCache]: Analyzing trace with hash -103055551, now seen corresponding path program 1 times [2022-03-20 23:39:33,750 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-20 23:39:33,750 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [768053126] [2022-03-20 23:39:33,750 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-20 23:39:33,751 INFO L85 PathProgramCache]: Analyzing trace with hash -103055551, now seen corresponding path program 2 times [2022-03-20 23:39:33,751 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 23:39:33,751 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1094000479] [2022-03-20 23:39:33,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 23:39:33,751 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 23:39:33,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 23:39:33,784 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 23:39:33,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 23:39:33,788 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 23:39:33,788 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 23:39:33,788 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1094000479] [2022-03-20 23:39:33,788 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1094000479] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 23:39:33,789 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 23:39:33,789 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-03-20 23:39:33,789 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-20 23:39:33,789 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [768053126] [2022-03-20 23:39:33,789 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [768053126] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 23:39:33,789 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 23:39:33,789 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-03-20 23:39:33,789 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [54566693] [2022-03-20 23:39:33,789 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 23:39:33,790 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-03-20 23:39:33,790 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-20 23:39:33,790 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-03-20 23:39:33,790 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-03-20 23:39:33,790 INFO L87 Difference]: Start difference. First operand 278 states and 432 transitions. Second operand has 5 states, 5 states have (on average 5.4) internal successors, (27), 4 states have internal predecessors, (27), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-20 23:39:34,056 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 23:39:34,056 INFO L93 Difference]: Finished difference Result 360 states and 550 transitions. [2022-03-20 23:39:34,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-03-20 23:39:34,057 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.4) internal successors, (27), 4 states have internal predecessors, (27), 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 31 [2022-03-20 23:39:34,057 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 23:39:34,058 INFO L225 Difference]: With dead ends: 360 [2022-03-20 23:39:34,058 INFO L226 Difference]: Without dead ends: 358 [2022-03-20 23:39:34,059 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-03-20 23:39:34,062 INFO L913 BasicCegarLoop]: 179 mSDtfsCounter, 436 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 348 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 436 SdHoareTripleChecker+Valid, 191 SdHoareTripleChecker+Invalid, 365 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 348 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-20 23:39:34,063 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [436 Valid, 191 Invalid, 365 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 348 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-03-20 23:39:34,064 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 358 states. [2022-03-20 23:39:34,081 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 358 to 276. [2022-03-20 23:39:34,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 276 states, 271 states have (on average 1.5719557195571956) internal successors, (426), 271 states have internal predecessors, (426), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-20 23:39:34,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 276 states to 276 states and 430 transitions. [2022-03-20 23:39:34,083 INFO L78 Accepts]: Start accepts. Automaton has 276 states and 430 transitions. Word has length 31 [2022-03-20 23:39:34,083 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 23:39:34,083 INFO L478 AbstractCegarLoop]: Abstraction has 276 states and 430 transitions. [2022-03-20 23:39:34,083 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.4) internal successors, (27), 4 states have internal predecessors, (27), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-20 23:39:34,083 INFO L276 IsEmpty]: Start isEmpty. Operand 276 states and 430 transitions. [2022-03-20 23:39:34,087 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2022-03-20 23:39:34,087 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 23:39:34,087 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 23:39:34,087 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-03-20 23:39:34,088 INFO L403 AbstractCegarLoop]: === Iteration 5 === Targeting ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 23:39:34,089 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 23:39:34,090 INFO L85 PathProgramCache]: Analyzing trace with hash -1303486160, now seen corresponding path program 1 times [2022-03-20 23:39:34,093 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-20 23:39:34,093 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [211315760] [2022-03-20 23:39:34,094 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-20 23:39:34,094 INFO L85 PathProgramCache]: Analyzing trace with hash -1303486160, now seen corresponding path program 2 times [2022-03-20 23:39:34,094 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 23:39:34,094 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1129096833] [2022-03-20 23:39:34,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 23:39:34,095 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 23:39:34,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 23:39:34,133 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 23:39:34,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 23:39:34,140 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 23:39:34,140 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 23:39:34,140 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1129096833] [2022-03-20 23:39:34,140 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1129096833] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 23:39:34,140 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 23:39:34,140 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-03-20 23:39:34,140 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-20 23:39:34,140 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [211315760] [2022-03-20 23:39:34,140 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [211315760] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 23:39:34,141 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 23:39:34,141 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-03-20 23:39:34,141 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [627607845] [2022-03-20 23:39:34,141 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 23:39:34,141 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-03-20 23:39:34,141 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-20 23:39:34,141 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-03-20 23:39:34,141 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-03-20 23:39:34,141 INFO L87 Difference]: Start difference. First operand 276 states and 430 transitions. Second operand has 4 states, 4 states have (on average 8.75) internal successors, (35), 3 states have internal predecessors, (35), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-20 23:39:34,346 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 23:39:34,346 INFO L93 Difference]: Finished difference Result 796 states and 1250 transitions. [2022-03-20 23:39:34,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-03-20 23:39:34,347 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.75) internal successors, (35), 3 states have internal predecessors, (35), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 39 [2022-03-20 23:39:34,348 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 23:39:34,351 INFO L225 Difference]: With dead ends: 796 [2022-03-20 23:39:34,351 INFO L226 Difference]: Without dead ends: 535 [2022-03-20 23:39:34,354 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-03-20 23:39:34,355 INFO L913 BasicCegarLoop]: 211 mSDtfsCounter, 588 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 218 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 588 SdHoareTripleChecker+Valid, 218 SdHoareTripleChecker+Invalid, 231 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 218 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-20 23:39:34,356 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [588 Valid, 218 Invalid, 231 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 218 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-20 23:39:34,357 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 535 states. [2022-03-20 23:39:34,387 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 535 to 533. [2022-03-20 23:39:34,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 533 states, 528 states have (on average 1.5378787878787878) internal successors, (812), 528 states have internal predecessors, (812), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-20 23:39:34,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 533 states to 533 states and 816 transitions. [2022-03-20 23:39:34,389 INFO L78 Accepts]: Start accepts. Automaton has 533 states and 816 transitions. Word has length 39 [2022-03-20 23:39:34,390 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 23:39:34,390 INFO L478 AbstractCegarLoop]: Abstraction has 533 states and 816 transitions. [2022-03-20 23:39:34,390 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.75) internal successors, (35), 3 states have internal predecessors, (35), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-20 23:39:34,390 INFO L276 IsEmpty]: Start isEmpty. Operand 533 states and 816 transitions. [2022-03-20 23:39:34,391 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2022-03-20 23:39:34,391 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 23:39:34,391 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 23:39:34,392 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-03-20 23:39:34,392 INFO L403 AbstractCegarLoop]: === Iteration 6 === Targeting ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 23:39:34,392 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 23:39:34,392 INFO L85 PathProgramCache]: Analyzing trace with hash -602421582, now seen corresponding path program 1 times [2022-03-20 23:39:34,392 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-20 23:39:34,392 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1100684277] [2022-03-20 23:39:34,393 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-20 23:39:34,393 INFO L85 PathProgramCache]: Analyzing trace with hash -602421582, now seen corresponding path program 2 times [2022-03-20 23:39:34,393 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 23:39:34,393 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [155177188] [2022-03-20 23:39:34,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 23:39:34,393 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 23:39:34,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 23:39:34,457 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 23:39:34,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 23:39:34,461 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 23:39:34,461 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 23:39:34,461 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [155177188] [2022-03-20 23:39:34,461 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [155177188] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 23:39:34,461 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 23:39:34,461 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-03-20 23:39:34,462 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-20 23:39:34,462 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1100684277] [2022-03-20 23:39:34,462 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1100684277] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 23:39:34,462 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 23:39:34,462 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-03-20 23:39:34,462 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1761074588] [2022-03-20 23:39:34,462 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 23:39:34,462 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-03-20 23:39:34,462 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-20 23:39:34,463 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-03-20 23:39:34,463 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-03-20 23:39:34,463 INFO L87 Difference]: Start difference. First operand 533 states and 816 transitions. Second operand has 4 states, 4 states have (on average 8.75) internal successors, (35), 3 states have internal predecessors, (35), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-20 23:39:34,709 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 23:39:34,710 INFO L93 Difference]: Finished difference Result 1249 states and 1965 transitions. [2022-03-20 23:39:34,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-03-20 23:39:34,710 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.75) internal successors, (35), 3 states have internal predecessors, (35), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 39 [2022-03-20 23:39:34,710 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 23:39:34,712 INFO L225 Difference]: With dead ends: 1249 [2022-03-20 23:39:34,712 INFO L226 Difference]: Without dead ends: 731 [2022-03-20 23:39:34,713 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-03-20 23:39:34,714 INFO L913 BasicCegarLoop]: 236 mSDtfsCounter, 277 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 249 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 277 SdHoareTripleChecker+Valid, 243 SdHoareTripleChecker+Invalid, 286 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 249 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-20 23:39:34,714 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [277 Valid, 243 Invalid, 286 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 249 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-03-20 23:39:34,715 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 731 states. [2022-03-20 23:39:34,756 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 731 to 707. [2022-03-20 23:39:34,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 707 states, 702 states have (on average 1.435897435897436) internal successors, (1008), 702 states have internal predecessors, (1008), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-20 23:39:34,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 707 states to 707 states and 1012 transitions. [2022-03-20 23:39:34,759 INFO L78 Accepts]: Start accepts. Automaton has 707 states and 1012 transitions. Word has length 39 [2022-03-20 23:39:34,759 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 23:39:34,759 INFO L478 AbstractCegarLoop]: Abstraction has 707 states and 1012 transitions. [2022-03-20 23:39:34,759 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.75) internal successors, (35), 3 states have internal predecessors, (35), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-20 23:39:34,759 INFO L276 IsEmpty]: Start isEmpty. Operand 707 states and 1012 transitions. [2022-03-20 23:39:34,760 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2022-03-20 23:39:34,760 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 23:39:34,760 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 23:39:34,760 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-03-20 23:39:34,760 INFO L403 AbstractCegarLoop]: === Iteration 7 === Targeting ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 23:39:34,760 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 23:39:34,761 INFO L85 PathProgramCache]: Analyzing trace with hash 77636788, now seen corresponding path program 1 times [2022-03-20 23:39:34,761 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-20 23:39:34,761 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [989223719] [2022-03-20 23:39:34,761 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-20 23:39:34,761 INFO L85 PathProgramCache]: Analyzing trace with hash 77636788, now seen corresponding path program 2 times [2022-03-20 23:39:34,761 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 23:39:34,761 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1602297170] [2022-03-20 23:39:34,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 23:39:34,761 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 23:39:34,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 23:39:34,796 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 23:39:34,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 23:39:34,799 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 23:39:34,799 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 23:39:34,799 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1602297170] [2022-03-20 23:39:34,799 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1602297170] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 23:39:34,799 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 23:39:34,799 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-03-20 23:39:34,799 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-20 23:39:34,799 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [989223719] [2022-03-20 23:39:34,799 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [989223719] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 23:39:34,800 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 23:39:34,800 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-03-20 23:39:34,800 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [180868927] [2022-03-20 23:39:34,800 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 23:39:34,800 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-03-20 23:39:34,800 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-20 23:39:34,800 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-03-20 23:39:34,800 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-03-20 23:39:34,800 INFO L87 Difference]: Start difference. First operand 707 states and 1012 transitions. Second operand has 6 states, 5 states have (on average 7.0) internal successors, (35), 4 states have internal predecessors, (35), 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) [2022-03-20 23:39:35,203 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 23:39:35,204 INFO L93 Difference]: Finished difference Result 1645 states and 2434 transitions. [2022-03-20 23:39:35,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-03-20 23:39:35,204 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 7.0) internal successors, (35), 4 states have internal predecessors, (35), 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 39 [2022-03-20 23:39:35,204 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 23:39:35,207 INFO L225 Difference]: With dead ends: 1645 [2022-03-20 23:39:35,207 INFO L226 Difference]: Without dead ends: 905 [2022-03-20 23:39:35,209 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2022-03-20 23:39:35,209 INFO L913 BasicCegarLoop]: 181 mSDtfsCounter, 648 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 452 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 648 SdHoareTripleChecker+Valid, 198 SdHoareTripleChecker+Invalid, 500 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 452 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-20 23:39:35,209 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [648 Valid, 198 Invalid, 500 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 452 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-03-20 23:39:35,210 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 905 states. [2022-03-20 23:39:35,271 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 905 to 889. [2022-03-20 23:39:35,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 889 states, 884 states have (on average 1.407239819004525) internal successors, (1244), 884 states have internal predecessors, (1244), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-20 23:39:35,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 889 states to 889 states and 1248 transitions. [2022-03-20 23:39:35,274 INFO L78 Accepts]: Start accepts. Automaton has 889 states and 1248 transitions. Word has length 39 [2022-03-20 23:39:35,274 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 23:39:35,274 INFO L478 AbstractCegarLoop]: Abstraction has 889 states and 1248 transitions. [2022-03-20 23:39:35,274 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 7.0) internal successors, (35), 4 states have internal predecessors, (35), 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) [2022-03-20 23:39:35,274 INFO L276 IsEmpty]: Start isEmpty. Operand 889 states and 1248 transitions. [2022-03-20 23:39:35,275 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2022-03-20 23:39:35,275 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 23:39:35,276 INFO L499 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 23:39:35,276 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-03-20 23:39:35,276 INFO L403 AbstractCegarLoop]: === Iteration 8 === Targeting ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 23:39:35,276 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 23:39:35,276 INFO L85 PathProgramCache]: Analyzing trace with hash 943214065, now seen corresponding path program 1 times [2022-03-20 23:39:35,276 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-20 23:39:35,276 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [32488467]