/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_11.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-34549b5 [2022-04-06 18:51:48,472 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-04-06 18:51:48,473 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-04-06 18:51:48,515 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-04-06 18:51:48,533 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-04-06 18:51:48,535 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-04-06 18:51:48,536 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-04-06 18:51:48,536 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-04-06 18:51:48,537 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-04-06 18:51:48,538 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-04-06 18:51:48,540 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-04-06 18:51:48,544 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-04-06 18:51:48,545 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-04-06 18:51:48,549 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-04-06 18:51:48,549 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-04-06 18:51:48,550 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-04-06 18:51:48,550 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-04-06 18:51:48,555 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-04-06 18:51:48,560 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-04-06 18:51:48,561 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-04-06 18:51:48,562 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-04-06 18:51:48,563 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationJordan_32.epf [2022-04-06 18:51:48,571 INFO L113 SettingsManager]: Loading preferences was successful [2022-04-06 18:51:48,571 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-04-06 18:51:48,572 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-04-06 18:51:48,572 INFO L138 SettingsManager]: * sizeof long=4 [2022-04-06 18:51:48,572 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-04-06 18:51:48,572 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-04-06 18:51:48,572 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-04-06 18:51:48,572 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-04-06 18:51:48,573 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-04-06 18:51:48,573 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-04-06 18:51:48,573 INFO L138 SettingsManager]: * sizeof long double=12 [2022-04-06 18:51:48,573 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-04-06 18:51:48,574 INFO L138 SettingsManager]: * Use constant arrays=true [2022-04-06 18:51:48,574 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-04-06 18:51:48,574 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-04-06 18:51:48,574 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-04-06 18:51:48,574 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-04-06 18:51:48,574 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-04-06 18:51:48,574 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-04-06 18:51:48,574 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-04-06 18:51:48,574 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_NestedInterpolation [2022-04-06 18:51:48,574 INFO L138 SettingsManager]: * Trace refinement strategy=ACCELERATED_INTERPOLATION [2022-04-06 18:51:48,575 INFO L138 SettingsManager]: * Trace refinement strategy used in Accelerated Interpolation=CAMEL [2022-04-06 18:51:48,575 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-04-06 18:51:48,575 INFO L138 SettingsManager]: * Loop acceleration method that is used by accelerated interpolation=JORDAN [2022-04-06 18:51:48,575 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-04-06 18:51:48,746 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-04-06 18:51:48,765 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-04-06 18:51:48,767 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-04-06 18:51:48,768 INFO L271 PluginConnector]: Initializing CDTParser... [2022-04-06 18:51:48,770 INFO L275 PluginConnector]: CDTParser initialized [2022-04-06 18:51:48,770 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/openssl-simplified/s3_srvr_11.cil.c [2022-04-06 18:51:48,816 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7855b50d6/ac21381331264b56be021d6ce71d6e59/FLAGe55f3710a [2022-04-06 18:51:49,182 INFO L306 CDTParser]: Found 1 translation units. [2022-04-06 18:51:49,182 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/openssl-simplified/s3_srvr_11.cil.c [2022-04-06 18:51:49,194 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7855b50d6/ac21381331264b56be021d6ce71d6e59/FLAGe55f3710a [2022-04-06 18:51:49,206 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7855b50d6/ac21381331264b56be021d6ce71d6e59 [2022-04-06 18:51:49,208 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-04-06 18:51:49,209 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2022-04-06 18:51:49,211 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-04-06 18:51:49,211 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-04-06 18:51:49,214 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-04-06 18:51:49,214 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.04 06:51:49" (1/1) ... [2022-04-06 18:51:49,215 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@64a6a28f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.04 06:51:49, skipping insertion in model container [2022-04-06 18:51:49,215 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.04 06:51:49" (1/1) ... [2022-04-06 18:51:49,219 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-04-06 18:51:49,258 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-04-06 18:51:49,416 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_11.cil.c[43646,43659] [2022-04-06 18:51:49,421 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-04-06 18:51:49,425 INFO L203 MainTranslator]: Completed pre-run [2022-04-06 18:51:49,459 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_11.cil.c[43646,43659] [2022-04-06 18:51:49,461 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-04-06 18:51:49,469 INFO L208 MainTranslator]: Completed translation [2022-04-06 18:51:49,470 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.04 06:51:49 WrapperNode [2022-04-06 18:51:49,470 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-04-06 18:51:49,471 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-04-06 18:51:49,471 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-04-06 18:51:49,471 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-04-06 18:51:49,486 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.04 06:51:49" (1/1) ... [2022-04-06 18:51:49,486 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.04 06:51:49" (1/1) ... [2022-04-06 18:51:49,492 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.04 06:51:49" (1/1) ... [2022-04-06 18:51:49,492 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.04 06:51:49" (1/1) ... [2022-04-06 18:51:49,499 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.04 06:51:49" (1/1) ... [2022-04-06 18:51:49,513 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.04 06:51:49" (1/1) ... [2022-04-06 18:51:49,517 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.04 06:51:49" (1/1) ... [2022-04-06 18:51:49,520 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-04-06 18:51:49,521 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-04-06 18:51:49,521 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-04-06 18:51:49,521 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-04-06 18:51:49,521 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.04 06:51:49" (1/1) ... [2022-04-06 18:51:49,526 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-04-06 18:51:49,534 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-06 18:51:49,543 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) [2022-04-06 18:51:49,569 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 [2022-04-06 18:51:49,585 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2022-04-06 18:51:49,585 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-04-06 18:51:49,586 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2022-04-06 18:51:49,586 INFO L138 BoogieDeclarations]: Found implementation of procedure ssl3_accept [2022-04-06 18:51:49,586 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2022-04-06 18:51:49,586 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2022-04-06 18:51:49,586 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2022-04-06 18:51:49,586 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2022-04-06 18:51:49,586 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-04-06 18:51:49,586 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2022-04-06 18:51:49,587 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2022-04-06 18:51:49,587 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_long [2022-04-06 18:51:49,589 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_ulong [2022-04-06 18:51:49,589 INFO L130 BoogieDeclarations]: Found specification of procedure ssl3_accept [2022-04-06 18:51:49,589 INFO L130 BoogieDeclarations]: Found specification of procedure main [2022-04-06 18:51:49,589 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2022-04-06 18:51:49,589 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-04-06 18:51:49,589 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-04-06 18:51:49,589 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-04-06 18:51:49,589 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-04-06 18:51:49,589 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-04-06 18:51:49,668 INFO L234 CfgBuilder]: Building ICFG [2022-04-06 18:51:49,669 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-04-06 18:51:49,721 WARN L811 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-04-06 18:51:50,020 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##90: assume false; [2022-04-06 18:51:50,020 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##91: assume !false; [2022-04-06 18:51:50,025 INFO L275 CfgBuilder]: Performing block encoding [2022-04-06 18:51:50,030 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-04-06 18:51:50,030 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-04-06 18:51:50,031 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.04 06:51:50 BoogieIcfgContainer [2022-04-06 18:51:50,031 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-04-06 18:51:50,032 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-04-06 18:51:50,032 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-04-06 18:51:50,041 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-04-06 18:51:50,041 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.04 06:51:49" (1/3) ... [2022-04-06 18:51:50,042 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2aa031d5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.04 06:51:50, skipping insertion in model container [2022-04-06 18:51:50,042 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.04 06:51:49" (2/3) ... [2022-04-06 18:51:50,042 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2aa031d5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.04 06:51:50, skipping insertion in model container [2022-04-06 18:51:50,042 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.04 06:51:50" (3/3) ... [2022-04-06 18:51:50,043 INFO L111 eAbstractionObserver]: Analyzing ICFG s3_srvr_11.cil.c [2022-04-06 18:51:50,046 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2022-04-06 18:51:50,046 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-04-06 18:51:50,080 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-04-06 18:51:50,084 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 [2022-04-06 18:51:50,084 INFO L341 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-04-06 18:51:50,096 INFO L276 IsEmpty]: Start isEmpty. Operand has 158 states, 150 states have (on average 1.7266666666666666) internal successors, (259), 151 states have internal predecessors, (259), 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) [2022-04-06 18:51:50,112 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-04-06 18:51:50,112 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 18:51:50,113 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] [2022-04-06 18:51:50,113 INFO L403 AbstractCegarLoop]: === Iteration 1 === Targeting ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 18:51:50,116 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 18:51:50,117 INFO L85 PathProgramCache]: Analyzing trace with hash 1730008188, now seen corresponding path program 1 times [2022-04-06 18:51:50,121 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-06 18:51:50,122 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1683085779] [2022-04-06 18:51:50,128 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-04-06 18:51:50,129 INFO L85 PathProgramCache]: Analyzing trace with hash 1730008188, now seen corresponding path program 2 times [2022-04-06 18:51:50,130 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 18:51:50,130 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1788602509] [2022-04-06 18:51:50,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 18:51:50,131 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 18:51:50,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 18:51:50,335 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 18:51:50,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 18:51:50,354 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 18:51:50,355 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 18:51:50,355 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1788602509] [2022-04-06 18:51:50,355 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1788602509] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 18:51:50,355 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 18:51:50,356 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-04-06 18:51:50,357 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-06 18:51:50,358 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1683085779] [2022-04-06 18:51:50,358 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1683085779] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 18:51:50,359 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 18:51:50,359 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-04-06 18:51:50,359 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [119534154] [2022-04-06 18:51:50,360 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 18:51:50,363 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-04-06 18:51:50,364 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-06 18:51:50,385 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-04-06 18:51:50,386 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-04-06 18:51:50,389 INFO L87 Difference]: Start difference. First operand has 158 states, 150 states have (on average 1.7266666666666666) internal successors, (259), 151 states have internal predecessors, (259), 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 7.0) internal successors, (28), 3 states have internal predecessors, (28), 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) [2022-04-06 18:51:50,805 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 18:51:50,806 INFO L93 Difference]: Finished difference Result 365 states and 628 transitions. [2022-04-06 18:51:50,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-04-06 18:51:50,808 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.0) internal successors, (28), 3 states have internal predecessors, (28), 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 32 [2022-04-06 18:51:50,808 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 18:51:50,820 INFO L225 Difference]: With dead ends: 365 [2022-04-06 18:51:50,821 INFO L226 Difference]: Without dead ends: 186 [2022-04-06 18:51:50,824 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 [2022-04-06 18:51:50,827 INFO L913 BasicCegarLoop]: 281 mSDtfsCounter, 355 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 283 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 356 SdHoareTripleChecker+Valid, 290 SdHoareTripleChecker+Invalid, 328 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 283 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-04-06 18:51:50,828 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [356 Valid, 290 Invalid, 328 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 283 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-04-06 18:51:50,840 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 186 states. [2022-04-06 18:51:50,880 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 186 to 185. [2022-04-06 18:51:50,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 185 states, 180 states have (on average 1.4833333333333334) internal successors, (267), 180 states have internal predecessors, (267), 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) [2022-04-06 18:51:50,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 185 states to 185 states and 271 transitions. [2022-04-06 18:51:50,885 INFO L78 Accepts]: Start accepts. Automaton has 185 states and 271 transitions. Word has length 32 [2022-04-06 18:51:50,885 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 18:51:50,885 INFO L478 AbstractCegarLoop]: Abstraction has 185 states and 271 transitions. [2022-04-06 18:51:50,885 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.0) internal successors, (28), 3 states have internal predecessors, (28), 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) [2022-04-06 18:51:50,885 INFO L276 IsEmpty]: Start isEmpty. Operand 185 states and 271 transitions. [2022-04-06 18:51:50,887 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-04-06 18:51:50,887 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 18:51:50,887 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] [2022-04-06 18:51:50,888 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-04-06 18:51:50,888 INFO L403 AbstractCegarLoop]: === Iteration 2 === Targeting ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 18:51:50,889 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 18:51:50,889 INFO L85 PathProgramCache]: Analyzing trace with hash -1886345113, now seen corresponding path program 1 times [2022-04-06 18:51:50,890 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-06 18:51:50,890 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [2025093276] [2022-04-06 18:51:50,891 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-04-06 18:51:50,891 INFO L85 PathProgramCache]: Analyzing trace with hash -1886345113, now seen corresponding path program 2 times [2022-04-06 18:51:50,891 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 18:51:50,892 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [740631084] [2022-04-06 18:51:50,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 18:51:50,892 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 18:51:50,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 18:51:50,940 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 18:51:50,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 18:51:50,945 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 18:51:50,945 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 18:51:50,945 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [740631084] [2022-04-06 18:51:50,945 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [740631084] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 18:51:50,946 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 18:51:50,946 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-04-06 18:51:50,946 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-06 18:51:50,946 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [2025093276] [2022-04-06 18:51:50,946 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [2025093276] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 18:51:50,946 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 18:51:50,946 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-04-06 18:51:50,947 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1503057292] [2022-04-06 18:51:50,947 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 18:51:50,947 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-04-06 18:51:50,947 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-06 18:51:50,948 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-04-06 18:51:50,948 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-04-06 18:51:50,948 INFO L87 Difference]: Start difference. First operand 185 states and 271 transitions. Second operand has 5 states, 5 states have (on average 5.8) internal successors, (29), 4 states have internal predecessors, (29), 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) [2022-04-06 18:51:51,227 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 18:51:51,228 INFO L93 Difference]: Finished difference Result 385 states and 567 transitions. [2022-04-06 18:51:51,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-04-06 18:51:51,231 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.8) internal successors, (29), 4 states have internal predecessors, (29), 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 33 [2022-04-06 18:51:51,236 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 18:51:51,239 INFO L225 Difference]: With dead ends: 385 [2022-04-06 18:51:51,239 INFO L226 Difference]: Without dead ends: 214 [2022-04-06 18:51:51,241 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 [2022-04-06 18:51:51,242 INFO L913 BasicCegarLoop]: 173 mSDtfsCounter, 423 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 375 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 423 SdHoareTripleChecker+Valid, 185 SdHoareTripleChecker+Invalid, 385 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 375 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-04-06 18:51:51,242 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [423 Valid, 185 Invalid, 385 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 375 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-04-06 18:51:51,243 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 214 states. [2022-04-06 18:51:51,255 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 214 to 193. [2022-04-06 18:51:51,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 193 states, 188 states have (on average 1.4893617021276595) internal successors, (280), 188 states have internal predecessors, (280), 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) [2022-04-06 18:51:51,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 193 states to 193 states and 284 transitions. [2022-04-06 18:51:51,256 INFO L78 Accepts]: Start accepts. Automaton has 193 states and 284 transitions. Word has length 33 [2022-04-06 18:51:51,256 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 18:51:51,256 INFO L478 AbstractCegarLoop]: Abstraction has 193 states and 284 transitions. [2022-04-06 18:51:51,256 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.8) internal successors, (29), 4 states have internal predecessors, (29), 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) [2022-04-06 18:51:51,256 INFO L276 IsEmpty]: Start isEmpty. Operand 193 states and 284 transitions. [2022-04-06 18:51:51,257 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2022-04-06 18:51:51,257 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 18:51:51,257 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] [2022-04-06 18:51:51,258 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-04-06 18:51:51,258 INFO L403 AbstractCegarLoop]: === Iteration 3 === Targeting ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 18:51:51,258 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 18:51:51,258 INFO L85 PathProgramCache]: Analyzing trace with hash -818420097, now seen corresponding path program 1 times [2022-04-06 18:51:51,258 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-06 18:51:51,258 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1460836690] [2022-04-06 18:51:51,259 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-04-06 18:51:51,259 INFO L85 PathProgramCache]: Analyzing trace with hash -818420097, now seen corresponding path program 2 times [2022-04-06 18:51:51,259 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 18:51:51,259 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [940473570] [2022-04-06 18:51:51,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 18:51:51,259 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 18:51:51,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 18:51:51,306 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 18:51:51,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 18:51:51,312 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 18:51:51,313 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 18:51:51,313 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [940473570] [2022-04-06 18:51:51,313 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [940473570] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 18:51:51,313 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 18:51:51,313 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-04-06 18:51:51,313 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-06 18:51:51,313 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1460836690] [2022-04-06 18:51:51,314 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1460836690] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 18:51:51,314 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 18:51:51,314 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-04-06 18:51:51,314 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1893739787] [2022-04-06 18:51:51,314 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 18:51:51,314 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-04-06 18:51:51,314 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-06 18:51:51,315 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-04-06 18:51:51,315 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-04-06 18:51:51,315 INFO L87 Difference]: Start difference. First operand 193 states and 284 transitions. Second operand has 5 states, 5 states have (on average 6.2) internal successors, (31), 4 states have internal predecessors, (31), 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) [2022-04-06 18:51:51,563 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 18:51:51,563 INFO L93 Difference]: Finished difference Result 411 states and 605 transitions. [2022-04-06 18:51:51,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-04-06 18:51:51,564 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.2) internal successors, (31), 4 states have internal predecessors, (31), 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 35 [2022-04-06 18:51:51,564 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 18:51:51,565 INFO L225 Difference]: With dead ends: 411 [2022-04-06 18:51:51,565 INFO L226 Difference]: Without dead ends: 232 [2022-04-06 18:51:51,567 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 [2022-04-06 18:51:51,568 INFO L913 BasicCegarLoop]: 184 mSDtfsCounter, 396 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 381 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 396 SdHoareTripleChecker+Valid, 196 SdHoareTripleChecker+Invalid, 388 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 381 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-04-06 18:51:51,572 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [396 Valid, 196 Invalid, 388 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 381 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-04-06 18:51:51,573 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 232 states. [2022-04-06 18:51:51,594 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 232 to 202. [2022-04-06 18:51:51,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 202 states, 197 states have (on average 1.4771573604060915) internal successors, (291), 197 states have internal predecessors, (291), 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) [2022-04-06 18:51:51,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202 states to 202 states and 295 transitions. [2022-04-06 18:51:51,595 INFO L78 Accepts]: Start accepts. Automaton has 202 states and 295 transitions. Word has length 35 [2022-04-06 18:51:51,595 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 18:51:51,595 INFO L478 AbstractCegarLoop]: Abstraction has 202 states and 295 transitions. [2022-04-06 18:51:51,596 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.2) internal successors, (31), 4 states have internal predecessors, (31), 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) [2022-04-06 18:51:51,596 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states and 295 transitions. [2022-04-06 18:51:51,601 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-04-06 18:51:51,601 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 18:51:51,601 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] [2022-04-06 18:51:51,602 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-04-06 18:51:51,603 INFO L403 AbstractCegarLoop]: === Iteration 4 === Targeting ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 18:51:51,603 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 18:51:51,603 INFO L85 PathProgramCache]: Analyzing trace with hash -148338235, now seen corresponding path program 1 times [2022-04-06 18:51:51,603 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-06 18:51:51,605 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [2066041779] [2022-04-06 18:51:51,607 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-04-06 18:51:51,607 INFO L85 PathProgramCache]: Analyzing trace with hash -148338235, now seen corresponding path program 2 times [2022-04-06 18:51:51,607 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 18:51:51,607 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1458305152] [2022-04-06 18:51:51,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 18:51:51,607 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 18:51:51,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 18:51:51,639 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 18:51:51,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 18:51:51,649 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 18:51:51,649 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 18:51:51,650 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1458305152] [2022-04-06 18:51:51,650 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1458305152] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 18:51:51,650 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 18:51:51,650 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-04-06 18:51:51,650 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-06 18:51:51,650 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [2066041779] [2022-04-06 18:51:51,650 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [2066041779] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 18:51:51,650 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 18:51:51,650 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-04-06 18:51:51,651 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1806615292] [2022-04-06 18:51:51,651 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 18:51:51,651 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-04-06 18:51:51,651 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-06 18:51:51,651 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-04-06 18:51:51,651 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-04-06 18:51:51,651 INFO L87 Difference]: Start difference. First operand 202 states and 295 transitions. Second operand has 4 states, 4 states have (on average 8.0) internal successors, (32), 3 states have internal predecessors, (32), 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) [2022-04-06 18:51:51,903 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 18:51:51,903 INFO L93 Difference]: Finished difference Result 441 states and 666 transitions. [2022-04-06 18:51:51,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-04-06 18:51:51,903 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.0) internal successors, (32), 3 states have internal predecessors, (32), 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 36 [2022-04-06 18:51:51,903 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 18:51:51,904 INFO L225 Difference]: With dead ends: 441 [2022-04-06 18:51:51,904 INFO L226 Difference]: Without dead ends: 241 [2022-04-06 18:51:51,905 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 [2022-04-06 18:51:51,905 INFO L913 BasicCegarLoop]: 227 mSDtfsCounter, 310 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 232 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 310 SdHoareTripleChecker+Valid, 234 SdHoareTripleChecker+Invalid, 279 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 232 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-04-06 18:51:51,906 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [310 Valid, 234 Invalid, 279 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 232 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-04-06 18:51:51,906 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 241 states. [2022-04-06 18:51:51,916 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 241 to 225. [2022-04-06 18:51:51,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 225 states, 220 states have (on average 1.4954545454545454) internal successors, (329), 220 states have internal predecessors, (329), 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) [2022-04-06 18:51:51,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 225 states to 225 states and 333 transitions. [2022-04-06 18:51:51,917 INFO L78 Accepts]: Start accepts. Automaton has 225 states and 333 transitions. Word has length 36 [2022-04-06 18:51:51,918 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 18:51:51,918 INFO L478 AbstractCegarLoop]: Abstraction has 225 states and 333 transitions. [2022-04-06 18:51:51,918 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.0) internal successors, (32), 3 states have internal predecessors, (32), 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) [2022-04-06 18:51:51,918 INFO L276 IsEmpty]: Start isEmpty. Operand 225 states and 333 transitions. [2022-04-06 18:51:51,918 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2022-04-06 18:51:51,919 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 18:51:51,919 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-06 18:51:51,919 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-04-06 18:51:51,919 INFO L403 AbstractCegarLoop]: === Iteration 5 === Targeting ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 18:51:51,919 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 18:51:51,919 INFO L85 PathProgramCache]: Analyzing trace with hash 1107449201, now seen corresponding path program 1 times [2022-04-06 18:51:51,919 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-06 18:51:51,919 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [821525140] [2022-04-06 18:51:51,920 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-04-06 18:51:51,920 INFO L85 PathProgramCache]: Analyzing trace with hash 1107449201, now seen corresponding path program 2 times [2022-04-06 18:51:51,920 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 18:51:51,920 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1039602022] [2022-04-06 18:51:51,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 18:51:51,920 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 18:51:51,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 18:51:51,953 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 18:51:51,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 18:51:51,964 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 18:51:51,964 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 18:51:51,964 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1039602022] [2022-04-06 18:51:51,964 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1039602022] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 18:51:51,964 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 18:51:51,964 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-04-06 18:51:51,965 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-06 18:51:51,965 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [821525140] [2022-04-06 18:51:51,965 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [821525140] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 18:51:51,965 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 18:51:51,965 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-04-06 18:51:51,965 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1610557636] [2022-04-06 18:51:51,965 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 18:51:51,965 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-04-06 18:51:51,965 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-06 18:51:51,966 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-04-06 18:51:51,966 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-04-06 18:51:51,966 INFO L87 Difference]: Start difference. First operand 225 states and 333 transitions. Second operand has 4 states, 4 states have (on average 9.25) internal successors, (37), 3 states have internal predecessors, (37), 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) [2022-04-06 18:51:52,123 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 18:51:52,123 INFO L93 Difference]: Finished difference Result 646 states and 962 transitions. [2022-04-06 18:51:52,124 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-04-06 18:51:52,124 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 9.25) internal successors, (37), 3 states have internal predecessors, (37), 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 41 [2022-04-06 18:51:52,125 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 18:51:52,126 INFO L225 Difference]: With dead ends: 646 [2022-04-06 18:51:52,126 INFO L226 Difference]: Without dead ends: 435 [2022-04-06 18:51:52,127 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 [2022-04-06 18:51:52,128 INFO L913 BasicCegarLoop]: 213 mSDtfsCounter, 589 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 208 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 589 SdHoareTripleChecker+Valid, 220 SdHoareTripleChecker+Invalid, 215 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 208 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-04-06 18:51:52,128 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [589 Valid, 220 Invalid, 215 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 208 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-04-06 18:51:52,129 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 435 states. [2022-04-06 18:51:52,156 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 435 to 433. [2022-04-06 18:51:52,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 433 states, 428 states have (on average 1.4883177570093458) internal successors, (637), 428 states have internal predecessors, (637), 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) [2022-04-06 18:51:52,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 433 states to 433 states and 641 transitions. [2022-04-06 18:51:52,158 INFO L78 Accepts]: Start accepts. Automaton has 433 states and 641 transitions. Word has length 41 [2022-04-06 18:51:52,159 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 18:51:52,159 INFO L478 AbstractCegarLoop]: Abstraction has 433 states and 641 transitions. [2022-04-06 18:51:52,159 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.25) internal successors, (37), 3 states have internal predecessors, (37), 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) [2022-04-06 18:51:52,159 INFO L276 IsEmpty]: Start isEmpty. Operand 433 states and 641 transitions. [2022-04-06 18:51:52,160 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2022-04-06 18:51:52,160 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 18:51:52,160 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-06 18:51:52,160 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-04-06 18:51:52,161 INFO L403 AbstractCegarLoop]: === Iteration 6 === Targeting ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 18:51:52,161 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 18:51:52,161 INFO L85 PathProgramCache]: Analyzing trace with hash 1540817245, now seen corresponding path program 1 times [2022-04-06 18:51:52,161 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-06 18:51:52,161 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1663532] [2022-04-06 18:51:52,161 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-04-06 18:51:52,161 INFO L85 PathProgramCache]: Analyzing trace with hash 1540817245, now seen corresponding path program 2 times [2022-04-06 18:51:52,162 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 18:51:52,162 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [128999684] [2022-04-06 18:51:52,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 18:51:52,162 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 18:51:52,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 18:51:52,209 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 18:51:52,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 18:51:52,212 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 18:51:52,213 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 18:51:52,213 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [128999684] [2022-04-06 18:51:52,213 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [128999684] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 18:51:52,213 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 18:51:52,213 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-04-06 18:51:52,213 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-06 18:51:52,213 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1663532] [2022-04-06 18:51:52,213 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1663532] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 18:51:52,213 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 18:51:52,213 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-04-06 18:51:52,214 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [233174946] [2022-04-06 18:51:52,214 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 18:51:52,214 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-04-06 18:51:52,214 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-06 18:51:52,214 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-04-06 18:51:52,214 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-04-06 18:51:52,214 INFO L87 Difference]: Start difference. First operand 433 states and 641 transitions. Second operand has 4 states, 4 states have (on average 9.25) internal successors, (37), 3 states have internal predecessors, (37), 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) [2022-04-06 18:51:52,456 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 18:51:52,456 INFO L93 Difference]: Finished difference Result 972 states and 1480 transitions. [2022-04-06 18:51:52,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-04-06 18:51:52,457 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 9.25) internal successors, (37), 3 states have internal predecessors, (37), 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 41 [2022-04-06 18:51:52,457 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 18:51:52,458 INFO L225 Difference]: With dead ends: 972 [2022-04-06 18:51:52,459 INFO L226 Difference]: Without dead ends: 529 [2022-04-06 18:51:52,459 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 [2022-04-06 18:51:52,460 INFO L913 BasicCegarLoop]: 228 mSDtfsCounter, 348 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 220 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 348 SdHoareTripleChecker+Valid, 235 SdHoareTripleChecker+Invalid, 269 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 220 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-04-06 18:51:52,460 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [348 Valid, 235 Invalid, 269 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 220 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-04-06 18:51:52,460 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 529 states. [2022-04-06 18:51:52,481 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 529 to 489. [2022-04-06 18:51:52,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 489 states, 484 states have (on average 1.5103305785123966) internal successors, (731), 484 states have internal predecessors, (731), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-06 18:51:52,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 489 states to 489 states and 735 transitions. [2022-04-06 18:51:52,483 INFO L78 Accepts]: Start accepts. Automaton has 489 states and 735 transitions. Word has length 41 [2022-04-06 18:51:52,483 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 18:51:52,483 INFO L478 AbstractCegarLoop]: Abstraction has 489 states and 735 transitions. [2022-04-06 18:51:52,483 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.25) internal successors, (37), 3 states have internal predecessors, (37), 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) [2022-04-06 18:51:52,484 INFO L276 IsEmpty]: Start isEmpty. Operand 489 states and 735 transitions. [2022-04-06 18:51:52,484 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2022-04-06 18:51:52,484 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 18:51:52,484 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-06 18:51:52,484 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-04-06 18:51:52,485 INFO L403 AbstractCegarLoop]: === Iteration 7 === Targeting ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 18:51:52,485 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 18:51:52,485 INFO L85 PathProgramCache]: Analyzing trace with hash 162840181, now seen corresponding path program 1 times [2022-04-06 18:51:52,485 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-06 18:51:52,485 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1147987219] [2022-04-06 18:51:52,485 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-04-06 18:51:52,485 INFO L85 PathProgramCache]: Analyzing trace with hash 162840181, now seen corresponding path program 2 times [2022-04-06 18:51:52,485 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 18:51:52,486 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1051932167] [2022-04-06 18:51:52,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 18:51:52,486 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 18:51:52,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 18:51:52,524 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 18:51:52,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 18:51:52,532 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 18:51:52,532 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 18:51:52,532 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1051932167] [2022-04-06 18:51:52,533 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1051932167] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 18:51:52,533 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 18:51:52,533 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-04-06 18:51:52,533 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-06 18:51:52,533 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1147987219] [2022-04-06 18:51:52,533 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1147987219] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 18:51:52,533 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 18:51:52,533 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-04-06 18:51:52,533 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [159607428] [2022-04-06 18:51:52,533 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 18:51:52,534 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-04-06 18:51:52,534 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-06 18:51:52,535 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-04-06 18:51:52,535 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-04-06 18:51:52,535 INFO L87 Difference]: Start difference. First operand 489 states and 735 transitions. Second operand has 4 states, 4 states have (on average 9.5) internal successors, (38), 3 states have internal predecessors, (38), 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) [2022-04-06 18:51:52,766 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 18:51:52,766 INFO L93 Difference]: Finished difference Result 1058 states and 1625 transitions. [2022-04-06 18:51:52,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-04-06 18:51:52,766 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 9.5) internal successors, (38), 3 states have internal predecessors, (38), 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 42 [2022-04-06 18:51:52,767 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 18:51:52,768 INFO L225 Difference]: With dead ends: 1058 [2022-04-06 18:51:52,768 INFO L226 Difference]: Without dead ends: 583 [2022-04-06 18:51:52,769 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 [2022-04-06 18:51:52,770 INFO L913 BasicCegarLoop]: 231 mSDtfsCounter, 293 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 241 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 293 SdHoareTripleChecker+Valid, 238 SdHoareTripleChecker+Invalid, 281 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 241 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-04-06 18:51:52,770 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [293 Valid, 238 Invalid, 281 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 241 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-04-06 18:51:52,771 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 583 states. [2022-04-06 18:51:52,795 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 583 to 571. [2022-04-06 18:51:52,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 571 states, 566 states have (on average 1.4681978798586572) internal successors, (831), 566 states have internal predecessors, (831), 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) [2022-04-06 18:51:52,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 571 states to 571 states and 835 transitions. [2022-04-06 18:51:52,797 INFO L78 Accepts]: Start accepts. Automaton has 571 states and 835 transitions. Word has length 42 [2022-04-06 18:51:52,797 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 18:51:52,797 INFO L478 AbstractCegarLoop]: Abstraction has 571 states and 835 transitions. [2022-04-06 18:51:52,797 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.5) internal successors, (38), 3 states have internal predecessors, (38), 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) [2022-04-06 18:51:52,797 INFO L276 IsEmpty]: Start isEmpty. Operand 571 states and 835 transitions. [2022-04-06 18:51:52,798 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2022-04-06 18:51:52,798 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 18:51:52,798 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-06 18:51:52,798 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-04-06 18:51:52,798 INFO L403 AbstractCegarLoop]: === Iteration 8 === Targeting ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 18:51:52,798 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 18:51:52,799 INFO L85 PathProgramCache]: Analyzing trace with hash 1441142835, now seen corresponding path program 1 times [2022-04-06 18:51:52,799 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-06 18:51:52,799 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1111384325] [2022-04-06 18:51:52,799 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-04-06 18:51:52,799 INFO L85 PathProgramCache]: Analyzing trace with hash 1441142835, now seen corresponding path program 2 times [2022-04-06 18:51:52,799 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 18:51:52,799 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1630745075] [2022-04-06 18:51:52,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 18:51:52,800 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 18:51:52,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 18:51:52,820 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 18:51:52,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 18:51:52,823 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 18:51:52,823 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 18:51:52,823 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1630745075] [2022-04-06 18:51:52,823 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1630745075] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 18:51:52,823 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 18:51:52,823 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-04-06 18:51:52,823 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-06 18:51:52,824 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1111384325] [2022-04-06 18:51:52,824 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1111384325] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 18:51:52,824 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 18:51:52,824 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-04-06 18:51:52,824 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [751722441] [2022-04-06 18:51:52,824 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 18:51:52,824 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-04-06 18:51:52,824 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-06 18:51:52,824 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-04-06 18:51:52,824 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-04-06 18:51:52,825 INFO L87 Difference]: Start difference. First operand 571 states and 835 transitions. Second operand has 4 states, 4 states have (on average 9.75) internal successors, (39), 3 states have internal predecessors, (39), 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) [2022-04-06 18:51:53,057 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 18:51:53,057 INFO L93 Difference]: Finished difference Result 1224 states and 1828 transitions. [2022-04-06 18:51:53,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-04-06 18:51:53,057 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 9.75) internal successors, (39), 3 states have internal predecessors, (39), 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 43 [2022-04-06 18:51:53,058 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 18:51:53,059 INFO L225 Difference]: With dead ends: 1224 [2022-04-06 18:51:53,060 INFO L226 Difference]: Without dead ends: 643 [2022-04-06 18:51:53,061 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 [2022-04-06 18:51:53,061 INFO L913 BasicCegarLoop]: 228 mSDtfsCounter, 339 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 187 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 339 SdHoareTripleChecker+Valid, 235 SdHoareTripleChecker+Invalid, 241 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 187 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-04-06 18:51:53,061 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [339 Valid, 235 Invalid, 241 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 187 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-04-06 18:51:53,062 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 643 states. [2022-04-06 18:51:53,089 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 643 to 633. [2022-04-06 18:51:53,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 633 states, 628 states have (on average 1.4952229299363058) internal successors, (939), 628 states have internal predecessors, (939), 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) [2022-04-06 18:51:53,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 633 states to 633 states and 943 transitions. [2022-04-06 18:51:53,091 INFO L78 Accepts]: Start accepts. Automaton has 633 states and 943 transitions. Word has length 43 [2022-04-06 18:51:53,091 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 18:51:53,092 INFO L478 AbstractCegarLoop]: Abstraction has 633 states and 943 transitions. [2022-04-06 18:51:53,092 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.75) internal successors, (39), 3 states have internal predecessors, (39), 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) [2022-04-06 18:51:53,092 INFO L276 IsEmpty]: Start isEmpty. Operand 633 states and 943 transitions. [2022-04-06 18:51:53,092 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2022-04-06 18:51:53,092 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 18:51:53,093 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-06 18:51:53,093 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-04-06 18:51:53,093 INFO L403 AbstractCegarLoop]: === Iteration 9 === Targeting ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 18:51:53,093 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 18:51:53,093 INFO L85 PathProgramCache]: Analyzing trace with hash -111424063, now seen corresponding path program 1 times [2022-04-06 18:51:53,093 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-06 18:51:53,093 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1512026729] [2022-04-06 18:51:53,094 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-04-06 18:51:53,094 INFO L85 PathProgramCache]: Analyzing trace with hash -111424063, now seen corresponding path program 2 times [2022-04-06 18:51:53,094 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 18:51:53,094 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1913962998] [2022-04-06 18:51:53,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 18:51:53,094 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 18:51:53,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 18:51:53,119 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 18:51:53,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 18:51:53,122 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 18:51:53,122 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 18:51:53,122 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1913962998] [2022-04-06 18:51:53,122 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1913962998] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 18:51:53,122 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 18:51:53,123 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-04-06 18:51:53,123 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-06 18:51:53,123 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1512026729] [2022-04-06 18:51:53,123 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1512026729] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 18:51:53,123 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 18:51:53,123 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-04-06 18:51:53,123 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1168990285] [2022-04-06 18:51:53,123 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 18:51:53,123 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-04-06 18:51:53,123 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-06 18:51:53,124 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-04-06 18:51:53,124 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-04-06 18:51:53,124 INFO L87 Difference]: Start difference. First operand 633 states and 943 transitions. Second operand has 5 states, 5 states have (on average 8.8) internal successors, (44), 4 states have internal predecessors, (44), 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) [2022-04-06 18:51:53,415 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 18:51:53,416 INFO L93 Difference]: Finished difference Result 1392 states and 2069 transitions. [2022-04-06 18:51:53,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-04-06 18:51:53,416 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.8) internal successors, (44), 4 states have internal predecessors, (44), 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 48 [2022-04-06 18:51:53,416 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 18:51:53,419 INFO L225 Difference]: With dead ends: 1392 [2022-04-06 18:51:53,419 INFO L226 Difference]: Without dead ends: 773 [2022-04-06 18:51:53,420 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 [2022-04-06 18:51:53,420 INFO L913 BasicCegarLoop]: 184 mSDtfsCounter, 400 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 388 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 400 SdHoareTripleChecker+Valid, 196 SdHoareTripleChecker+Invalid, 397 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 388 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-04-06 18:51:53,420 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [400 Valid, 196 Invalid, 397 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 388 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-04-06 18:51:53,421 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 773 states. [2022-04-06 18:51:53,456 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 773 to 627. [2022-04-06 18:51:53,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 627 states, 622 states have (on average 1.5096463022508038) internal successors, (939), 622 states have internal predecessors, (939), 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) [2022-04-06 18:51:53,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 627 states to 627 states and 943 transitions. [2022-04-06 18:51:53,459 INFO L78 Accepts]: Start accepts. Automaton has 627 states and 943 transitions. Word has length 48 [2022-04-06 18:51:53,459 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 18:51:53,459 INFO L478 AbstractCegarLoop]: Abstraction has 627 states and 943 transitions. [2022-04-06 18:51:53,459 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.8) internal successors, (44), 4 states have internal predecessors, (44), 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) [2022-04-06 18:51:53,459 INFO L276 IsEmpty]: Start isEmpty. Operand 627 states and 943 transitions. [2022-04-06 18:51:53,460 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2022-04-06 18:51:53,460 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 18:51:53,460 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-06 18:51:53,460 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-04-06 18:51:53,461 INFO L403 AbstractCegarLoop]: === Iteration 10 === Targeting ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 18:51:53,461 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 18:51:53,461 INFO L85 PathProgramCache]: Analyzing trace with hash 1022300905, now seen corresponding path program 1 times [2022-04-06 18:51:53,461 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-06 18:51:53,461 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [800486139] [2022-04-06 18:51:53,461 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-04-06 18:51:53,462 INFO L85 PathProgramCache]: Analyzing trace with hash 1022300905, now seen corresponding path program 2 times [2022-04-06 18:51:53,462 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 18:51:53,462 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2106129066] [2022-04-06 18:51:53,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 18:51:53,462 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 18:51:53,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 18:51:53,484 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 18:51:53,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 18:51:53,487 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 18:51:53,487 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 18:51:53,487 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2106129066] [2022-04-06 18:51:53,488 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2106129066] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 18:51:53,488 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 18:51:53,488 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-04-06 18:51:53,488 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-06 18:51:53,488 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [800486139] [2022-04-06 18:51:53,488 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [800486139] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 18:51:53,488 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 18:51:53,488 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-04-06 18:51:53,489 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [224859447] [2022-04-06 18:51:53,489 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 18:51:53,489 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-04-06 18:51:53,489 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-06 18:51:53,489 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-04-06 18:51:53,489 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-04-06 18:51:53,489 INFO L87 Difference]: Start difference. First operand 627 states and 943 transitions. 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) [2022-04-06 18:51:53,719 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 18:51:53,719 INFO L93 Difference]: Finished difference Result 1334 states and 2041 transitions. [2022-04-06 18:51:53,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-04-06 18:51:53,720 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 [2022-04-06 18:51:53,720 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 18:51:53,722 INFO L225 Difference]: With dead ends: 1334 [2022-04-06 18:51:53,722 INFO L226 Difference]: Without dead ends: 721 [2022-04-06 18:51:53,723 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 [2022-04-06 18:51:53,724 INFO L913 BasicCegarLoop]: 231 mSDtfsCounter, 297 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 236 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 297 SdHoareTripleChecker+Valid, 238 SdHoareTripleChecker+Invalid, 278 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 236 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-04-06 18:51:53,724 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [297 Valid, 238 Invalid, 278 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 236 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-04-06 18:51:53,725 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 721 states. [2022-04-06 18:51:53,753 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 721 to 701. [2022-04-06 18:51:53,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 701 states, 696 states have (on average 1.4813218390804597) internal successors, (1031), 696 states have internal predecessors, (1031), 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) [2022-04-06 18:51:53,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 701 states to 701 states and 1035 transitions. [2022-04-06 18:51:53,755 INFO L78 Accepts]: Start accepts. Automaton has 701 states and 1035 transitions. Word has length 51 [2022-04-06 18:51:53,755 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 18:51:53,755 INFO L478 AbstractCegarLoop]: Abstraction has 701 states and 1035 transitions. [2022-04-06 18:51:53,756 INFO L479 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) [2022-04-06 18:51:53,756 INFO L276 IsEmpty]: Start isEmpty. Operand 701 states and 1035 transitions. [2022-04-06 18:51:53,756 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2022-04-06 18:51:53,756 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 18:51:53,757 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-06 18:51:53,757 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-04-06 18:51:53,757 INFO L403 AbstractCegarLoop]: === Iteration 11 === Targeting ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 18:51:53,757 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 18:51:53,757 INFO L85 PathProgramCache]: Analyzing trace with hash 1802448233, now seen corresponding path program 1 times [2022-04-06 18:51:53,757 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-06 18:51:53,757 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1557381415] [2022-04-06 18:51:53,757 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-04-06 18:51:53,758 INFO L85 PathProgramCache]: Analyzing trace with hash 1802448233, now seen corresponding path program 2 times [2022-04-06 18:51:53,758 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 18:51:53,758 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [69557571] [2022-04-06 18:51:53,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 18:51:53,758 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 18:51:53,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 18:51:53,779 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 18:51:53,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 18:51:53,782 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 18:51:53,782 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 18:51:53,782 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [69557571] [2022-04-06 18:51:53,782 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [69557571] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 18:51:53,782 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 18:51:53,782 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-04-06 18:51:53,782 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-06 18:51:53,782 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1557381415] [2022-04-06 18:51:53,782 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1557381415] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 18:51:53,782 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 18:51:53,782 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-04-06 18:51:53,783 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [434954561] [2022-04-06 18:51:53,783 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 18:51:53,783 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-04-06 18:51:53,783 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-06 18:51:53,783 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-04-06 18:51:53,783 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-04-06 18:51:53,783 INFO L87 Difference]: Start difference. First operand 701 states and 1035 transitions. 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) [2022-04-06 18:51:54,001 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 18:51:54,001 INFO L93 Difference]: Finished difference Result 2066 states and 3050 transitions. [2022-04-06 18:51:54,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-04-06 18:51:54,002 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 [2022-04-06 18:51:54,002 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 18:51:54,006 INFO L225 Difference]: With dead ends: 2066 [2022-04-06 18:51:54,006 INFO L226 Difference]: Without dead ends: 1379 [2022-04-06 18:51:54,007 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 [2022-04-06 18:51:54,007 INFO L913 BasicCegarLoop]: 218 mSDtfsCounter, 558 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 213 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 558 SdHoareTripleChecker+Valid, 225 SdHoareTripleChecker+Invalid, 216 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 213 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-04-06 18:51:54,008 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [558 Valid, 225 Invalid, 216 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 213 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-04-06 18:51:54,009 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1379 states. [2022-04-06 18:51:54,066 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1379 to 1377. [2022-04-06 18:51:54,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1377 states, 1372 states have (on average 1.4766763848396502) internal successors, (2026), 1372 states have internal predecessors, (2026), 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) [2022-04-06 18:51:54,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1377 states to 1377 states and 2030 transitions. [2022-04-06 18:51:54,071 INFO L78 Accepts]: Start accepts. Automaton has 1377 states and 2030 transitions. Word has length 51 [2022-04-06 18:51:54,071 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 18:51:54,071 INFO L478 AbstractCegarLoop]: Abstraction has 1377 states and 2030 transitions. [2022-04-06 18:51:54,071 INFO L479 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) [2022-04-06 18:51:54,071 INFO L276 IsEmpty]: Start isEmpty. Operand 1377 states and 2030 transitions. [2022-04-06 18:51:54,073 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2022-04-06 18:51:54,073 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 18:51:54,073 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-06 18:51:54,073 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-04-06 18:51:54,073 INFO L403 AbstractCegarLoop]: === Iteration 12 === Targeting ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 18:51:54,073 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 18:51:54,073 INFO L85 PathProgramCache]: Analyzing trace with hash 821412563, now seen corresponding path program 1 times [2022-04-06 18:51:54,074 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-06 18:51:54,074 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [821025576] [2022-04-06 18:51:54,074 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-04-06 18:51:54,074 INFO L85 PathProgramCache]: Analyzing trace with hash 821412563, now seen corresponding path program 2 times [2022-04-06 18:51:54,074 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 18:51:54,074 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [928181752] [2022-04-06 18:51:54,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 18:51:54,074 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 18:51:54,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 18:51:54,124 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 18:51:54,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 18:51:54,130 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 18:51:54,131 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 18:51:54,131 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [928181752] [2022-04-06 18:51:54,131 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [928181752] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 18:51:54,131 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 18:51:54,131 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-04-06 18:51:54,131 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-06 18:51:54,131 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [821025576] [2022-04-06 18:51:54,131 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [821025576] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 18:51:54,131 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 18:51:54,132 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-04-06 18:51:54,132 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1165298837] [2022-04-06 18:51:54,132 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 18:51:54,132 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-04-06 18:51:54,132 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-06 18:51:54,132 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-04-06 18:51:54,132 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-04-06 18:51:54,132 INFO L87 Difference]: Start difference. First operand 1377 states and 2030 transitions. Second operand has 6 states, 5 states have (on average 9.6) internal successors, (48), 4 states have internal predecessors, (48), 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) [2022-04-06 18:51:54,460 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 18:51:54,460 INFO L93 Difference]: Finished difference Result 2953 states and 4379 transitions. [2022-04-06 18:51:54,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-04-06 18:51:54,460 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 9.6) internal successors, (48), 4 states have internal predecessors, (48), 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 52 [2022-04-06 18:51:54,460 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 18:51:54,465 INFO L225 Difference]: With dead ends: 2953 [2022-04-06 18:51:54,465 INFO L226 Difference]: Without dead ends: 1567 [2022-04-06 18:51:54,467 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 [2022-04-06 18:51:54,468 INFO L913 BasicCegarLoop]: 177 mSDtfsCounter, 614 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 444 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 614 SdHoareTripleChecker+Valid, 194 SdHoareTripleChecker+Invalid, 490 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 444 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-04-06 18:51:54,468 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [614 Valid, 194 Invalid, 490 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 444 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-04-06 18:51:54,469 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1567 states. [2022-04-06 18:51:54,566 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1567 to 1453. [2022-04-06 18:51:54,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1453 states, 1448 states have (on average 1.473756906077348) internal successors, (2134), 1448 states have internal predecessors, (2134), 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) [2022-04-06 18:51:54,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1453 states to 1453 states and 2138 transitions. [2022-04-06 18:51:54,572 INFO L78 Accepts]: Start accepts. Automaton has 1453 states and 2138 transitions. Word has length 52 [2022-04-06 18:51:54,572 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 18:51:54,572 INFO L478 AbstractCegarLoop]: Abstraction has 1453 states and 2138 transitions. [2022-04-06 18:51:54,572 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 9.6) internal successors, (48), 4 states have internal predecessors, (48), 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) [2022-04-06 18:51:54,572 INFO L276 IsEmpty]: Start isEmpty. Operand 1453 states and 2138 transitions. [2022-04-06 18:51:54,574 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2022-04-06 18:51:54,574 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 18:51:54,574 INFO L499 BasicCegarLoop]: trace histogram [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] [2022-04-06 18:51:54,574 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-04-06 18:51:54,574 INFO L403 AbstractCegarLoop]: === Iteration 13 === Targeting ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 18:51:54,575 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 18:51:54,575 INFO L85 PathProgramCache]: Analyzing trace with hash -1685857253, now seen corresponding path program 1 times [2022-04-06 18:51:54,575 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-06 18:51:54,575 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1585263661] [2022-04-06 18:51:54,676 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 3 AssignedVariables, 1 ReadonlyVariables, Eigenvalues: {0={1=1, 2=1}, 1={1=2}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-04-06 18:51:54,677 INFO L271 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-04-06 18:51:54,678 INFO L85 PathProgramCache]: Analyzing trace with hash -1487532159, now seen corresponding path program 1 times [2022-04-06 18:51:54,678 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 18:51:54,678 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1761730975] [2022-04-06 18:51:54,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 18:51:54,678 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 18:51:54,689 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-04-06 18:51:54,689 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.AssertionError: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: Cannot name open terms at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheck.(TraceCheck.java:232) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.InterpolatingTraceCheck.(InterpolatingTraceCheck.java:91) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.InterpolatingTraceCheckCraig.(InterpolatingTraceCheckCraig.java:89) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleCraig.construct(IpTcStrategyModuleCraig.java:79) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleCraig.construct(IpTcStrategyModuleCraig.java:1) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.isCorrect(IpTcStrategyModuleBase.java:57) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.checkFeasibility(AutomatonFreeRefinementEngine.java:209) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:121) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.lib.acceleratedinterpolation.AcceleratedInterpolationCore.runStrategy(AcceleratedInterpolationCore.java:300) at de.uni_freiburg.informatik.ultimate.lib.acceleratedinterpolation.AcceleratedInterpolationCore.acceleratedInterpolationCoreIsCorrect(AcceleratedInterpolationCore.java:289) at de.uni_freiburg.informatik.ultimate.lib.acceleratedinterpolation.AcceleratedInterpolation.(AcceleratedInterpolation.java:190) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleAcceleratedInterpolation.construct(IpTcStrategyModuleAcceleratedInterpolation.java:80) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.isCorrect(IpTcStrategyModuleBase.java:57) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.checkFeasibility(AutomatonFreeRefinementEngine.java:209) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:121) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:595) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:414) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:349) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:331) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopUtils.getCegarLoopResult(CegarLoopUtils.java:56) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:412) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:262) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:175) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:154) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:123) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) Caused by: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: Cannot name open terms at de.uni_freiburg.informatik.ultimate.logic.NoopScript.annotate(NoopScript.java:471) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.annotate(WrapperScript.java:282) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.annotate(WrapperScript.java:282) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.AnnotateAndAssertCodeBlocks.annotateAndAssertTerm(AnnotateAndAssertCodeBlocks.java:192) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.AnnotateAndAssertCodeBlocks.annotateAndAssertNonCall(AnnotateAndAssertCodeBlocks.java:109) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.AnnotateAndAsserter.buildAnnotatedSsaAndAssertTerms(AnnotateAndAsserter.java:101) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheck.checkTrace(TraceCheck.java:313) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheck.(TraceCheck.java:211) ... 40 more [2022-04-06 18:51:54,695 INFO L158 Benchmark]: Toolchain (without parser) took 5485.77ms. Allocated memory was 186.6MB in the beginning and 285.2MB in the end (delta: 98.6MB). Free memory was 137.1MB in the beginning and 169.2MB in the end (delta: -32.0MB). Peak memory consumption was 68.1MB. Max. memory is 8.0GB. [2022-04-06 18:51:54,695 INFO L158 Benchmark]: CDTParser took 0.09ms. Allocated memory is still 186.6MB. Free memory is still 154.5MB. There was no memory consumed. Max. memory is 8.0GB. [2022-04-06 18:51:54,695 INFO L158 Benchmark]: CACSL2BoogieTranslator took 259.21ms. Allocated memory is still 186.6MB. Free memory was 137.0MB in the beginning and 158.0MB in the end (delta: -21.1MB). Peak memory consumption was 12.1MB. Max. memory is 8.0GB. [2022-04-06 18:51:54,695 INFO L158 Benchmark]: Boogie Preprocessor took 49.45ms. Allocated memory is still 186.6MB. Free memory was 158.0MB in the beginning and 155.9MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-04-06 18:51:54,695 INFO L158 Benchmark]: RCFGBuilder took 510.81ms. Allocated memory is still 186.6MB. Free memory was 155.9MB in the beginning and 127.1MB in the end (delta: 28.8MB). Peak memory consumption was 28.3MB. Max. memory is 8.0GB. [2022-04-06 18:51:54,695 INFO L158 Benchmark]: TraceAbstraction took 4661.88ms. Allocated memory was 186.6MB in the beginning and 285.2MB in the end (delta: 98.6MB). Free memory was 126.6MB in the beginning and 169.2MB in the end (delta: -42.6MB). Peak memory consumption was 57.0MB. Max. memory is 8.0GB. [2022-04-06 18:51:54,697 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.09ms. Allocated memory is still 186.6MB. Free memory is still 154.5MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 259.21ms. Allocated memory is still 186.6MB. Free memory was 137.0MB in the beginning and 158.0MB in the end (delta: -21.1MB). Peak memory consumption was 12.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 49.45ms. Allocated memory is still 186.6MB. Free memory was 158.0MB in the beginning and 155.9MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 510.81ms. Allocated memory is still 186.6MB. Free memory was 155.9MB in the beginning and 127.1MB in the end (delta: 28.8MB). Peak memory consumption was 28.3MB. Max. memory is 8.0GB. * TraceAbstraction took 4661.88ms. Allocated memory was 186.6MB in the beginning and 285.2MB in the end (delta: 98.6MB). Free memory was 126.6MB in the beginning and 169.2MB in the end (delta: -42.6MB). Peak memory consumption was 57.0MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: AssertionError: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: Cannot name open terms de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: AssertionError: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: Cannot name open terms: de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheck.(TraceCheck.java:232) RESULT: Ultimate could not prove your program: Toolchain returned no result. [2022-04-06 18:51:54,720 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request...