/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/s3_srvr.blast.03.i.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-05ce600 [2022-02-24 02:16:32,322 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-02-24 02:16:32,323 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-02-24 02:16:32,355 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-02-24 02:16:32,373 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-02-24 02:16:32,375 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-02-24 02:16:32,376 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-02-24 02:16:32,378 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-02-24 02:16:32,379 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-02-24 02:16:32,380 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-02-24 02:16:32,384 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-02-24 02:16:32,389 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-02-24 02:16:32,390 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-02-24 02:16:32,391 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-02-24 02:16:32,392 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-02-24 02:16:32,393 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-02-24 02:16:32,399 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-02-24 02:16:32,407 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-02-24 02:16:32,407 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-02-24 02:16:32,408 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-02-24 02:16:32,408 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationJordan_32.epf [2022-02-24 02:16:32,419 INFO L113 SettingsManager]: Loading preferences was successful [2022-02-24 02:16:32,419 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-02-24 02:16:32,420 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-02-24 02:16:32,421 INFO L138 SettingsManager]: * sizeof long=4 [2022-02-24 02:16:32,421 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-02-24 02:16:32,421 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-02-24 02:16:32,421 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-02-24 02:16:32,421 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-02-24 02:16:32,422 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-02-24 02:16:32,422 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-02-24 02:16:32,422 INFO L138 SettingsManager]: * sizeof long double=12 [2022-02-24 02:16:32,423 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-02-24 02:16:32,423 INFO L138 SettingsManager]: * Use constant arrays=true [2022-02-24 02:16:32,423 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-02-24 02:16:32,423 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-02-24 02:16:32,423 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-02-24 02:16:32,423 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-02-24 02:16:32,423 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-02-24 02:16:32,423 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-02-24 02:16:32,424 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-02-24 02:16:32,424 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2022-02-24 02:16:32,424 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-02-24 02:16:32,424 INFO L138 SettingsManager]: * Loop acceleration method that is used by accelerated interpolation=JORDAN [2022-02-24 02:16:32,424 INFO L138 SettingsManager]: * Use separate solver for trace checks=false WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-02-24 02:16:32,632 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-02-24 02:16:32,650 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-02-24 02:16:32,653 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-02-24 02:16:32,653 INFO L271 PluginConnector]: Initializing CDTParser... [2022-02-24 02:16:32,655 INFO L275 PluginConnector]: CDTParser initialized [2022-02-24 02:16:32,656 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/openssl/s3_srvr.blast.03.i.cil.c [2022-02-24 02:16:32,712 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/71156210a/a64bccd2527945a891fd86b5815b7f44/FLAGf7732dc09 [2022-02-24 02:16:33,172 INFO L306 CDTParser]: Found 1 translation units. [2022-02-24 02:16:33,173 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/openssl/s3_srvr.blast.03.i.cil.c [2022-02-24 02:16:33,201 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/71156210a/a64bccd2527945a891fd86b5815b7f44/FLAGf7732dc09 [2022-02-24 02:16:33,480 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/71156210a/a64bccd2527945a891fd86b5815b7f44 [2022-02-24 02:16:33,482 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-02-24 02:16:33,483 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2022-02-24 02:16:33,485 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-02-24 02:16:33,485 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-02-24 02:16:33,488 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-02-24 02:16:33,489 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.02 02:16:33" (1/1) ... [2022-02-24 02:16:33,490 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6ce83fcd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 02:16:33, skipping insertion in model container [2022-02-24 02:16:33,490 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.02 02:16:33" (1/1) ... [2022-02-24 02:16:33,497 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-02-24 02:16:33,576 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-02-24 02:16:33,910 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/s3_srvr.blast.03.i.cil.c[72493,72506] [2022-02-24 02:16:33,929 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-02-24 02:16:33,951 INFO L203 MainTranslator]: Completed pre-run [2022-02-24 02:16:34,076 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/s3_srvr.blast.03.i.cil.c[72493,72506] [2022-02-24 02:16:34,079 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-02-24 02:16:34,099 INFO L208 MainTranslator]: Completed translation [2022-02-24 02:16:34,099 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 02:16:34 WrapperNode [2022-02-24 02:16:34,099 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-02-24 02:16:34,100 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-02-24 02:16:34,101 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-02-24 02:16:34,101 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-02-24 02:16:34,113 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 02:16:34" (1/1) ... [2022-02-24 02:16:34,113 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 02:16:34" (1/1) ... [2022-02-24 02:16:34,146 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 02:16:34" (1/1) ... [2022-02-24 02:16:34,146 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 02:16:34" (1/1) ... [2022-02-24 02:16:34,201 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 02:16:34" (1/1) ... [2022-02-24 02:16:34,221 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 02:16:34" (1/1) ... [2022-02-24 02:16:34,223 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 02:16:34" (1/1) ... [2022-02-24 02:16:34,228 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-02-24 02:16:34,229 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-02-24 02:16:34,229 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-02-24 02:16:34,229 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-02-24 02:16:34,237 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 02:16:34" (1/1) ... [2022-02-24 02:16:34,243 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-02-24 02:16:34,252 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-24 02:16:34,265 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-02-24 02:16:34,291 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-02-24 02:16:34,313 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2022-02-24 02:16:34,314 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-02-24 02:16:34,314 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2022-02-24 02:16:34,314 INFO L138 BoogieDeclarations]: Found implementation of procedure ssl3_get_server_method [2022-02-24 02:16:34,314 INFO L138 BoogieDeclarations]: Found implementation of procedure SSLv3_server_method [2022-02-24 02:16:34,314 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2022-02-24 02:16:34,315 INFO L138 BoogieDeclarations]: Found implementation of procedure ssl3_accept [2022-02-24 02:16:34,315 INFO L138 BoogieDeclarations]: Found implementation of procedure sslv3_base_method [2022-02-24 02:16:34,315 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2022-02-24 02:16:34,315 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2022-02-24 02:16:34,315 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2022-02-24 02:16:34,316 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2022-02-24 02:16:34,316 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2022-02-24 02:16:34,316 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-02-24 02:16:34,317 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2022-02-24 02:16:34,318 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2022-02-24 02:16:34,318 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2022-02-24 02:16:34,319 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_long [2022-02-24 02:16:34,319 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_ulong [2022-02-24 02:16:34,319 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy [2022-02-24 02:16:34,319 INFO L130 BoogieDeclarations]: Found specification of procedure SSLv3_server_method [2022-02-24 02:16:34,319 INFO L130 BoogieDeclarations]: Found specification of procedure sslv3_base_method [2022-02-24 02:16:34,319 INFO L130 BoogieDeclarations]: Found specification of procedure ssl3_accept [2022-02-24 02:16:34,319 INFO L130 BoogieDeclarations]: Found specification of procedure ssl3_get_server_method [2022-02-24 02:16:34,319 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2022-02-24 02:16:34,319 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-02-24 02:16:34,319 INFO L130 BoogieDeclarations]: Found specification of procedure main [2022-02-24 02:16:34,320 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-02-24 02:16:34,320 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-02-24 02:16:34,320 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-02-24 02:16:34,320 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-02-24 02:16:34,320 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2022-02-24 02:16:34,320 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2022-02-24 02:16:34,320 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2022-02-24 02:16:34,320 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-02-24 02:16:34,320 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-02-24 02:16:34,320 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2022-02-24 02:16:34,320 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2022-02-24 02:16:34,321 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2022-02-24 02:16:34,321 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2022-02-24 02:16:34,321 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-02-24 02:16:34,476 INFO L234 CfgBuilder]: Building ICFG [2022-02-24 02:16:34,478 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-02-24 02:16:36,844 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-02-24 02:16:37,426 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##87: assume false; [2022-02-24 02:16:37,426 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##88: assume !false; [2022-02-24 02:16:37,438 INFO L275 CfgBuilder]: Performing block encoding [2022-02-24 02:16:37,445 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-02-24 02:16:37,445 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-02-24 02:16:37,447 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.02 02:16:37 BoogieIcfgContainer [2022-02-24 02:16:37,447 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-02-24 02:16:37,448 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-02-24 02:16:37,448 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-02-24 02:16:37,454 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-02-24 02:16:37,454 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.02 02:16:33" (1/3) ... [2022-02-24 02:16:37,454 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6c625164 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.02 02:16:37, skipping insertion in model container [2022-02-24 02:16:37,455 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 02:16:34" (2/3) ... [2022-02-24 02:16:37,455 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6c625164 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.02 02:16:37, skipping insertion in model container [2022-02-24 02:16:37,455 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.02 02:16:37" (3/3) ... [2022-02-24 02:16:37,456 INFO L111 eAbstractionObserver]: Analyzing ICFG s3_srvr.blast.03.i.cil.c [2022-02-24 02:16:37,462 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2022-02-24 02:16:37,462 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-02-24 02:16:37,506 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-02-24 02:16:37,511 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=AcceleratedInterpolation, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=JORDAN [2022-02-24 02:16:37,512 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-02-24 02:16:37,528 INFO L276 IsEmpty]: Start isEmpty. Operand has 153 states, 145 states have (on average 1.696551724137931) internal successors, (246), 146 states have internal predecessors, (246), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-02-24 02:16:37,541 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2022-02-24 02:16:37,541 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 02:16:37,542 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 02:16:37,542 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 02:16:37,546 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 02:16:37,547 INFO L85 PathProgramCache]: Analyzing trace with hash -1104936065, now seen corresponding path program 1 times [2022-02-24 02:16:37,554 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 02:16:37,554 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1157400096] [2022-02-24 02:16:37,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 02:16:37,565 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 02:16:37,618 INFO L213 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-24 02:16:37,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:16:38,124 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 02:16:38,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:16:38,147 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 02:16:38,148 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 02:16:38,148 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1157400096] [2022-02-24 02:16:38,150 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1157400096] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 02:16:38,150 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 02:16:38,150 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-02-24 02:16:38,151 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [195117413] [2022-02-24 02:16:38,152 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 02:16:38,156 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-02-24 02:16:38,156 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 02:16:38,180 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-02-24 02:16:38,182 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-02-24 02:16:38,184 INFO L87 Difference]: Start difference. First operand has 153 states, 145 states have (on average 1.696551724137931) internal successors, (246), 146 states have internal predecessors, (246), 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 5 states, 5 states have (on average 9.6) internal successors, (48), 4 states have internal predecessors, (48), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:16:39,525 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.32s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 02:16:41,545 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 02:16:43,568 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 02:16:45,593 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 02:16:46,293 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 02:16:46,294 INFO L93 Difference]: Finished difference Result 324 states and 540 transitions. [2022-02-24 02:16:46,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-02-24 02:16:46,296 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.6) internal successors, (48), 4 states have internal predecessors, (48), 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 52 [2022-02-24 02:16:46,297 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 02:16:46,305 INFO L225 Difference]: With dead ends: 324 [2022-02-24 02:16:46,305 INFO L226 Difference]: Without dead ends: 165 [2022-02-24 02:16:46,310 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-02-24 02:16:46,313 INFO L933 BasicCegarLoop]: 219 mSDtfsCounter, 34 mSDsluCounter, 358 mSDsCounter, 0 mSdLazyCounter, 402 mSolverCounterSat, 11 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 577 SdHoareTripleChecker+Invalid, 416 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 402 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.0s IncrementalHoareTripleChecker+Time [2022-02-24 02:16:46,313 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [34 Valid, 577 Invalid, 416 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 402 Invalid, 3 Unknown, 0 Unchecked, 8.0s Time] [2022-02-24 02:16:46,327 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 165 states. [2022-02-24 02:16:46,352 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 165 to 148. [2022-02-24 02:16:46,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 148 states, 143 states have (on average 1.5384615384615385) internal successors, (220), 143 states have internal predecessors, (220), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:16:46,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148 states to 148 states and 224 transitions. [2022-02-24 02:16:46,359 INFO L78 Accepts]: Start accepts. Automaton has 148 states and 224 transitions. Word has length 52 [2022-02-24 02:16:46,359 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 02:16:46,360 INFO L470 AbstractCegarLoop]: Abstraction has 148 states and 224 transitions. [2022-02-24 02:16:46,360 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.6) internal successors, (48), 4 states have internal predecessors, (48), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:16:46,360 INFO L276 IsEmpty]: Start isEmpty. Operand 148 states and 224 transitions. [2022-02-24 02:16:46,380 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-02-24 02:16:46,380 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 02:16:46,380 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 02:16:46,381 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-02-24 02:16:46,381 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 02:16:46,382 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 02:16:46,382 INFO L85 PathProgramCache]: Analyzing trace with hash 133985870, now seen corresponding path program 1 times [2022-02-24 02:16:46,382 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 02:16:46,382 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1472467833] [2022-02-24 02:16:46,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 02:16:46,383 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 02:16:46,422 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-24 02:16:46,422 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-02-24 02:16:46,422 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 02:16:46,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:16:46,628 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 02:16:46,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:16:46,640 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 02:16:46,641 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 02:16:46,641 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1472467833] [2022-02-24 02:16:46,641 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1472467833] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 02:16:46,641 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 02:16:46,642 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-02-24 02:16:46,643 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1825324990] [2022-02-24 02:16:46,643 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 02:16:46,647 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-02-24 02:16:46,648 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 02:16:46,654 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-02-24 02:16:46,654 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-02-24 02:16:46,654 INFO L87 Difference]: Start difference. First operand 148 states and 224 transitions. Second operand has 5 states, 5 states have (on average 12.2) internal successors, (61), 4 states have internal predecessors, (61), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:16:48,671 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 02:16:49,176 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 02:16:49,176 INFO L93 Difference]: Finished difference Result 287 states and 431 transitions. [2022-02-24 02:16:49,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-02-24 02:16:49,177 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.2) internal successors, (61), 4 states have internal predecessors, (61), 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 65 [2022-02-24 02:16:49,177 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 02:16:49,179 INFO L225 Difference]: With dead ends: 287 [2022-02-24 02:16:49,179 INFO L226 Difference]: Without dead ends: 165 [2022-02-24 02:16:49,180 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-02-24 02:16:49,181 INFO L933 BasicCegarLoop]: 177 mSDtfsCounter, 24 mSDsluCounter, 276 mSDsCounter, 0 mSdLazyCounter, 350 mSolverCounterSat, 10 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 453 SdHoareTripleChecker+Invalid, 361 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 350 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2022-02-24 02:16:49,181 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [24 Valid, 453 Invalid, 361 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 350 Invalid, 1 Unknown, 0 Unchecked, 2.5s Time] [2022-02-24 02:16:49,183 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 165 states. [2022-02-24 02:16:49,207 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 165 to 148. [2022-02-24 02:16:49,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 148 states, 143 states have (on average 1.5314685314685315) internal successors, (219), 143 states have internal predecessors, (219), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:16:49,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148 states to 148 states and 223 transitions. [2022-02-24 02:16:49,209 INFO L78 Accepts]: Start accepts. Automaton has 148 states and 223 transitions. Word has length 65 [2022-02-24 02:16:49,209 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 02:16:49,209 INFO L470 AbstractCegarLoop]: Abstraction has 148 states and 223 transitions. [2022-02-24 02:16:49,209 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.2) internal successors, (61), 4 states have internal predecessors, (61), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:16:49,209 INFO L276 IsEmpty]: Start isEmpty. Operand 148 states and 223 transitions. [2022-02-24 02:16:49,211 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-02-24 02:16:49,211 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 02:16:49,211 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 02:16:49,211 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-02-24 02:16:49,211 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 02:16:49,212 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 02:16:49,212 INFO L85 PathProgramCache]: Analyzing trace with hash 1027752574, now seen corresponding path program 1 times [2022-02-24 02:16:49,212 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 02:16:49,212 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1456908644] [2022-02-24 02:16:49,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 02:16:49,213 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 02:16:49,226 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-24 02:16:49,226 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-02-24 02:16:49,226 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 02:16:49,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:16:49,354 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 02:16:49,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:16:49,361 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 02:16:49,361 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 02:16:49,361 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1456908644] [2022-02-24 02:16:49,361 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1456908644] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 02:16:49,361 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 02:16:49,361 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-02-24 02:16:49,362 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [765278195] [2022-02-24 02:16:49,362 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 02:16:49,362 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-02-24 02:16:49,362 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 02:16:49,363 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-02-24 02:16:49,363 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-02-24 02:16:49,363 INFO L87 Difference]: Start difference. First operand 148 states and 223 transitions. Second operand has 5 states, 5 states have (on average 12.4) internal successors, (62), 4 states have internal predecessors, (62), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:16:51,374 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 02:16:51,974 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 02:16:51,975 INFO L93 Difference]: Finished difference Result 383 states and 584 transitions. [2022-02-24 02:16:51,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-02-24 02:16:51,975 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.4) internal successors, (62), 4 states have internal predecessors, (62), 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 66 [2022-02-24 02:16:51,975 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 02:16:51,977 INFO L225 Difference]: With dead ends: 383 [2022-02-24 02:16:51,977 INFO L226 Difference]: Without dead ends: 261 [2022-02-24 02:16:51,978 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-02-24 02:16:51,979 INFO L933 BasicCegarLoop]: 108 mSDtfsCounter, 142 mSDsluCounter, 206 mSDsCounter, 0 mSdLazyCounter, 461 mSolverCounterSat, 63 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 142 SdHoareTripleChecker+Valid, 314 SdHoareTripleChecker+Invalid, 525 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 63 IncrementalHoareTripleChecker+Valid, 461 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2022-02-24 02:16:51,980 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [142 Valid, 314 Invalid, 525 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [63 Valid, 461 Invalid, 1 Unknown, 0 Unchecked, 2.6s Time] [2022-02-24 02:16:51,981 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 261 states. [2022-02-24 02:16:51,998 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 261 to 159. [2022-02-24 02:16:51,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 159 states, 154 states have (on average 1.5194805194805194) internal successors, (234), 154 states have internal predecessors, (234), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:16:51,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159 states to 159 states and 238 transitions. [2022-02-24 02:16:51,999 INFO L78 Accepts]: Start accepts. Automaton has 159 states and 238 transitions. Word has length 66 [2022-02-24 02:16:52,000 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 02:16:52,000 INFO L470 AbstractCegarLoop]: Abstraction has 159 states and 238 transitions. [2022-02-24 02:16:52,000 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.4) internal successors, (62), 4 states have internal predecessors, (62), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:16:52,000 INFO L276 IsEmpty]: Start isEmpty. Operand 159 states and 238 transitions. [2022-02-24 02:16:52,002 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-02-24 02:16:52,002 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 02:16:52,002 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 02:16:52,002 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-02-24 02:16:52,003 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 02:16:52,003 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 02:16:52,003 INFO L85 PathProgramCache]: Analyzing trace with hash 1865763346, now seen corresponding path program 1 times [2022-02-24 02:16:52,003 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 02:16:52,003 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [325992688] [2022-02-24 02:16:52,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 02:16:52,004 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 02:16:52,067 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 18 HavocedVariables, 0 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={1=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-24 02:16:52,068 INFO L275 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-02-24 02:16:52,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:16:52,172 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 02:16:52,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:16:52,178 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 02:16:57,011 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 02:16:57,012 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [325992688] [2022-02-24 02:16:57,012 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [325992688] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 02:16:57,012 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 02:16:57,012 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-02-24 02:16:57,013 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [318957949] [2022-02-24 02:16:57,013 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 02:16:57,013 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-02-24 02:16:57,013 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 02:16:57,014 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-02-24 02:16:57,014 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=107, Unknown=1, NotChecked=0, Total=156 [2022-02-24 02:16:57,014 INFO L87 Difference]: Start difference. First operand 159 states and 238 transitions. Second operand has 13 states, 13 states have (on average 4.769230769230769) internal successors, (62), 12 states have internal predecessors, (62), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:16:59,031 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 02:17:00,150 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 02:17:00,150 INFO L93 Difference]: Finished difference Result 423 states and 642 transitions. [2022-02-24 02:17:00,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-02-24 02:17:00,150 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 4.769230769230769) internal successors, (62), 12 states have internal predecessors, (62), 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 66 [2022-02-24 02:17:00,151 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 02:17:00,152 INFO L225 Difference]: With dead ends: 423 [2022-02-24 02:17:00,153 INFO L226 Difference]: Without dead ends: 290 [2022-02-24 02:17:00,154 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 4.8s TimeCoverageRelationStatistics Valid=48, Invalid=107, Unknown=1, NotChecked=0, Total=156 [2022-02-24 02:17:00,155 INFO L933 BasicCegarLoop]: 330 mSDtfsCounter, 138 mSDsluCounter, 644 mSDsCounter, 0 mSdLazyCounter, 921 mSolverCounterSat, 9 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 138 SdHoareTripleChecker+Valid, 974 SdHoareTripleChecker+Invalid, 952 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 921 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 21 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2022-02-24 02:17:00,155 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [138 Valid, 974 Invalid, 952 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 921 Invalid, 1 Unknown, 21 Unchecked, 3.1s Time] [2022-02-24 02:17:00,156 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 290 states. [2022-02-24 02:17:00,190 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 290 to 285. [2022-02-24 02:17:00,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 285 states, 280 states have (on average 1.5142857142857142) internal successors, (424), 280 states have internal predecessors, (424), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:17:00,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 285 states to 285 states and 428 transitions. [2022-02-24 02:17:00,193 INFO L78 Accepts]: Start accepts. Automaton has 285 states and 428 transitions. Word has length 66 [2022-02-24 02:17:00,193 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 02:17:00,193 INFO L470 AbstractCegarLoop]: Abstraction has 285 states and 428 transitions. [2022-02-24 02:17:00,193 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 4.769230769230769) internal successors, (62), 12 states have internal predecessors, (62), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:17:00,193 INFO L276 IsEmpty]: Start isEmpty. Operand 285 states and 428 transitions. [2022-02-24 02:17:00,196 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-02-24 02:17:00,196 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 02:17:00,196 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 02:17:00,196 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-02-24 02:17:00,196 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 02:17:00,197 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 02:17:00,197 INFO L85 PathProgramCache]: Analyzing trace with hash 1512674964, now seen corresponding path program 1 times [2022-02-24 02:17:00,197 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 02:17:00,197 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [9627816] [2022-02-24 02:17:00,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 02:17:00,198 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 02:17:00,281 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 18 HavocedVariables, 0 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={1=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-24 02:17:00,281 INFO L275 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-02-24 02:17:00,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:17:00,464 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 02:17:00,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:17:00,472 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 02:17:03,719 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 02:17:03,719 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [9627816] [2022-02-24 02:17:03,719 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [9627816] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 02:17:03,720 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 02:17:03,720 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-02-24 02:17:03,720 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [333593853] [2022-02-24 02:17:03,720 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 02:17:03,720 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-02-24 02:17:03,720 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 02:17:03,721 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-02-24 02:17:03,721 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=107, Unknown=1, NotChecked=0, Total=156 [2022-02-24 02:17:03,721 INFO L87 Difference]: Start difference. First operand 285 states and 428 transitions. Second operand has 13 states, 13 states have (on average 4.769230769230769) internal successors, (62), 12 states have internal predecessors, (62), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:17:05,734 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 02:17:06,405 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 02:17:06,405 INFO L93 Difference]: Finished difference Result 427 states and 642 transitions. [2022-02-24 02:17:06,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-02-24 02:17:06,406 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 4.769230769230769) internal successors, (62), 12 states have internal predecessors, (62), 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 66 [2022-02-24 02:17:06,406 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 02:17:06,407 INFO L225 Difference]: With dead ends: 427 [2022-02-24 02:17:06,408 INFO L226 Difference]: Without dead ends: 294 [2022-02-24 02:17:06,409 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=48, Invalid=107, Unknown=1, NotChecked=0, Total=156 [2022-02-24 02:17:06,410 INFO L933 BasicCegarLoop]: 191 mSDtfsCounter, 136 mSDsluCounter, 712 mSDsCounter, 0 mSdLazyCounter, 539 mSolverCounterSat, 4 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 136 SdHoareTripleChecker+Valid, 903 SdHoareTripleChecker+Invalid, 941 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 539 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 397 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2022-02-24 02:17:06,410 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [136 Valid, 903 Invalid, 941 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 539 Invalid, 1 Unknown, 397 Unchecked, 2.6s Time] [2022-02-24 02:17:06,411 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 294 states. [2022-02-24 02:17:06,425 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 294 to 285. [2022-02-24 02:17:06,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 285 states, 280 states have (on average 1.5142857142857142) internal successors, (424), 280 states have internal predecessors, (424), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:17:06,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 285 states to 285 states and 428 transitions. [2022-02-24 02:17:06,427 INFO L78 Accepts]: Start accepts. Automaton has 285 states and 428 transitions. Word has length 66 [2022-02-24 02:17:06,427 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 02:17:06,427 INFO L470 AbstractCegarLoop]: Abstraction has 285 states and 428 transitions. [2022-02-24 02:17:06,427 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 4.769230769230769) internal successors, (62), 12 states have internal predecessors, (62), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:17:06,428 INFO L276 IsEmpty]: Start isEmpty. Operand 285 states and 428 transitions. [2022-02-24 02:17:06,429 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-02-24 02:17:06,429 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 02:17:06,430 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 02:17:06,430 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-02-24 02:17:06,430 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 02:17:06,430 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 02:17:06,431 INFO L85 PathProgramCache]: Analyzing trace with hash 1381443083, now seen corresponding path program 1 times [2022-02-24 02:17:06,431 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 02:17:06,431 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [223956994] [2022-02-24 02:17:06,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 02:17:06,432 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 02:17:06,441 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-24 02:17:06,441 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-02-24 02:17:06,441 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 02:17:06,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:17:06,560 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 02:17:06,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:17:06,565 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 02:17:06,565 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 02:17:06,565 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [223956994] [2022-02-24 02:17:06,565 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [223956994] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 02:17:06,566 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 02:17:06,566 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-02-24 02:17:06,566 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [240948707] [2022-02-24 02:17:06,566 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 02:17:06,566 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-02-24 02:17:06,566 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 02:17:06,567 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-02-24 02:17:06,567 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-02-24 02:17:06,567 INFO L87 Difference]: Start difference. First operand 285 states and 428 transitions. Second operand has 5 states, 5 states have (on average 12.6) internal successors, (63), 4 states have internal predecessors, (63), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:17:08,579 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 02:17:09,107 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 02:17:09,107 INFO L93 Difference]: Finished difference Result 441 states and 658 transitions. [2022-02-24 02:17:09,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-02-24 02:17:09,108 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.6) internal successors, (63), 4 states have internal predecessors, (63), 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 67 [2022-02-24 02:17:09,108 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 02:17:09,109 INFO L225 Difference]: With dead ends: 441 [2022-02-24 02:17:09,109 INFO L226 Difference]: Without dead ends: 301 [2022-02-24 02:17:09,110 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-02-24 02:17:09,111 INFO L933 BasicCegarLoop]: 178 mSDtfsCounter, 25 mSDsluCounter, 277 mSDsCounter, 0 mSdLazyCounter, 348 mSolverCounterSat, 9 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 455 SdHoareTripleChecker+Invalid, 358 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 348 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2022-02-24 02:17:09,111 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [25 Valid, 455 Invalid, 358 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 348 Invalid, 1 Unknown, 0 Unchecked, 2.5s Time] [2022-02-24 02:17:09,112 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 301 states. [2022-02-24 02:17:09,128 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 301 to 285. [2022-02-24 02:17:09,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 285 states, 280 states have (on average 1.5107142857142857) internal successors, (423), 280 states have internal predecessors, (423), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:17:09,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 285 states to 285 states and 427 transitions. [2022-02-24 02:17:09,130 INFO L78 Accepts]: Start accepts. Automaton has 285 states and 427 transitions. Word has length 67 [2022-02-24 02:17:09,131 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 02:17:09,131 INFO L470 AbstractCegarLoop]: Abstraction has 285 states and 427 transitions. [2022-02-24 02:17:09,131 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.6) internal successors, (63), 4 states have internal predecessors, (63), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:17:09,132 INFO L276 IsEmpty]: Start isEmpty. Operand 285 states and 427 transitions. [2022-02-24 02:17:09,133 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-02-24 02:17:09,134 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 02:17:09,134 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 02:17:09,134 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-02-24 02:17:09,134 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 02:17:09,134 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 02:17:09,134 INFO L85 PathProgramCache]: Analyzing trace with hash -674199881, now seen corresponding path program 1 times [2022-02-24 02:17:09,135 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 02:17:09,135 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [260885859] [2022-02-24 02:17:09,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 02:17:09,135 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 02:17:09,192 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 19 HavocedVariables, 0 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={1=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-24 02:17:09,192 INFO L275 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-02-24 02:17:09,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:17:09,320 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 02:17:09,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:17:09,326 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 02:17:12,153 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 02:17:12,153 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [260885859] [2022-02-24 02:17:12,153 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [260885859] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 02:17:12,153 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 02:17:12,154 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-02-24 02:17:12,154 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [402279244] [2022-02-24 02:17:12,154 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 02:17:12,155 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-02-24 02:17:12,155 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 02:17:12,156 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-02-24 02:17:12,156 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=130, Unknown=1, NotChecked=0, Total=182 [2022-02-24 02:17:12,156 INFO L87 Difference]: Start difference. First operand 285 states and 427 transitions. Second operand has 14 states, 14 states have (on average 4.5) internal successors, (63), 13 states have internal predecessors, (63), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:17:14,171 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 02:17:14,863 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 02:17:14,863 INFO L93 Difference]: Finished difference Result 430 states and 645 transitions. [2022-02-24 02:17:14,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-02-24 02:17:14,868 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.5) internal successors, (63), 13 states have internal predecessors, (63), 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 67 [2022-02-24 02:17:14,868 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 02:17:14,869 INFO L225 Difference]: With dead ends: 430 [2022-02-24 02:17:14,869 INFO L226 Difference]: Without dead ends: 297 [2022-02-24 02:17:14,870 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=51, Invalid=130, Unknown=1, NotChecked=0, Total=182 [2022-02-24 02:17:14,870 INFO L933 BasicCegarLoop]: 184 mSDtfsCounter, 139 mSDsluCounter, 730 mSDsCounter, 0 mSdLazyCounter, 606 mSolverCounterSat, 7 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 139 SdHoareTripleChecker+Valid, 914 SdHoareTripleChecker+Invalid, 932 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 606 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 318 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2022-02-24 02:17:14,870 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [139 Valid, 914 Invalid, 932 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 606 Invalid, 1 Unknown, 318 Unchecked, 2.7s Time] [2022-02-24 02:17:14,871 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 297 states. [2022-02-24 02:17:14,890 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 297 to 287. [2022-02-24 02:17:14,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 287 states, 282 states have (on average 1.5106382978723405) internal successors, (426), 282 states have internal predecessors, (426), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:17:14,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 287 states to 287 states and 430 transitions. [2022-02-24 02:17:14,892 INFO L78 Accepts]: Start accepts. Automaton has 287 states and 430 transitions. Word has length 67 [2022-02-24 02:17:14,892 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 02:17:14,892 INFO L470 AbstractCegarLoop]: Abstraction has 287 states and 430 transitions. [2022-02-24 02:17:14,892 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.5) internal successors, (63), 13 states have internal predecessors, (63), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:17:14,892 INFO L276 IsEmpty]: Start isEmpty. Operand 287 states and 430 transitions. [2022-02-24 02:17:14,893 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-02-24 02:17:14,893 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 02:17:14,894 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 02:17:14,894 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-02-24 02:17:14,894 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 02:17:14,894 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 02:17:14,894 INFO L85 PathProgramCache]: Analyzing trace with hash -1027288263, now seen corresponding path program 1 times [2022-02-24 02:17:14,894 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 02:17:14,894 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1032446653] [2022-02-24 02:17:14,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 02:17:14,898 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 02:17:14,945 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 19 HavocedVariables, 0 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={1=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-24 02:17:14,945 INFO L275 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-02-24 02:17:14,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:17:15,033 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 02:17:15,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:17:15,037 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 02:17:18,243 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 02:17:18,244 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1032446653] [2022-02-24 02:17:18,244 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1032446653] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 02:17:18,244 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 02:17:18,244 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-02-24 02:17:18,244 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1780972333] [2022-02-24 02:17:18,244 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 02:17:18,245 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-02-24 02:17:18,245 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 02:17:18,245 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-02-24 02:17:18,245 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=130, Unknown=1, NotChecked=0, Total=182 [2022-02-24 02:17:18,246 INFO L87 Difference]: Start difference. First operand 287 states and 430 transitions. Second operand has 14 states, 14 states have (on average 4.5) internal successors, (63), 13 states have internal predecessors, (63), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:17:20,260 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 02:17:20,849 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 02:17:20,849 INFO L93 Difference]: Finished difference Result 430 states and 645 transitions. [2022-02-24 02:17:20,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-02-24 02:17:20,850 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.5) internal successors, (63), 13 states have internal predecessors, (63), 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 67 [2022-02-24 02:17:20,850 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 02:17:20,851 INFO L225 Difference]: With dead ends: 430 [2022-02-24 02:17:20,851 INFO L226 Difference]: Without dead ends: 297 [2022-02-24 02:17:20,852 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=51, Invalid=130, Unknown=1, NotChecked=0, Total=182 [2022-02-24 02:17:20,853 INFO L933 BasicCegarLoop]: 189 mSDtfsCounter, 137 mSDsluCounter, 738 mSDsCounter, 0 mSdLazyCounter, 609 mSolverCounterSat, 7 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 137 SdHoareTripleChecker+Valid, 927 SdHoareTripleChecker+Invalid, 938 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 609 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 321 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2022-02-24 02:17:20,853 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [137 Valid, 927 Invalid, 938 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 609 Invalid, 1 Unknown, 321 Unchecked, 2.6s Time] [2022-02-24 02:17:20,854 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 297 states. [2022-02-24 02:17:20,862 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 297 to 285. [2022-02-24 02:17:20,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 285 states, 280 states have (on average 1.5107142857142857) internal successors, (423), 280 states have internal predecessors, (423), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:17:20,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 285 states to 285 states and 427 transitions. [2022-02-24 02:17:20,864 INFO L78 Accepts]: Start accepts. Automaton has 285 states and 427 transitions. Word has length 67 [2022-02-24 02:17:20,865 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 02:17:20,865 INFO L470 AbstractCegarLoop]: Abstraction has 285 states and 427 transitions. [2022-02-24 02:17:20,865 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.5) internal successors, (63), 13 states have internal predecessors, (63), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:17:20,865 INFO L276 IsEmpty]: Start isEmpty. Operand 285 states and 427 transitions. [2022-02-24 02:17:20,866 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-02-24 02:17:20,866 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 02:17:20,866 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 02:17:20,866 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-02-24 02:17:20,866 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 02:17:20,867 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 02:17:20,867 INFO L85 PathProgramCache]: Analyzing trace with hash -48005626, now seen corresponding path program 1 times [2022-02-24 02:17:20,867 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 02:17:20,867 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1179015699] [2022-02-24 02:17:20,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 02:17:20,868 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 02:17:20,880 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-24 02:17:20,881 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-02-24 02:17:20,881 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 02:17:20,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:17:20,991 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 02:17:20,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:17:20,996 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 02:17:20,996 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 02:17:20,996 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1179015699] [2022-02-24 02:17:20,997 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1179015699] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 02:17:20,997 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 02:17:20,997 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-02-24 02:17:20,997 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [722824650] [2022-02-24 02:17:20,997 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 02:17:20,997 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-02-24 02:17:20,997 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 02:17:20,998 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-02-24 02:17:20,998 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-02-24 02:17:20,998 INFO L87 Difference]: Start difference. First operand 285 states and 427 transitions. Second operand has 5 states, 5 states have (on average 12.8) internal successors, (64), 4 states have internal predecessors, (64), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:17:23,009 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 02:17:23,456 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 02:17:23,456 INFO L93 Difference]: Finished difference Result 441 states and 657 transitions. [2022-02-24 02:17:23,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-02-24 02:17:23,457 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.8) internal successors, (64), 4 states have internal predecessors, (64), 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 68 [2022-02-24 02:17:23,457 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 02:17:23,458 INFO L225 Difference]: With dead ends: 441 [2022-02-24 02:17:23,459 INFO L226 Difference]: Without dead ends: 301 [2022-02-24 02:17:23,459 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-02-24 02:17:23,460 INFO L933 BasicCegarLoop]: 178 mSDtfsCounter, 23 mSDsluCounter, 277 mSDsCounter, 0 mSdLazyCounter, 348 mSolverCounterSat, 9 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 455 SdHoareTripleChecker+Invalid, 358 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 348 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2022-02-24 02:17:23,460 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [23 Valid, 455 Invalid, 358 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 348 Invalid, 1 Unknown, 0 Unchecked, 2.4s Time] [2022-02-24 02:17:23,461 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 301 states. [2022-02-24 02:17:23,471 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 301 to 285. [2022-02-24 02:17:23,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 285 states, 280 states have (on average 1.5071428571428571) internal successors, (422), 280 states have internal predecessors, (422), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:17:23,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 285 states to 285 states and 426 transitions. [2022-02-24 02:17:23,473 INFO L78 Accepts]: Start accepts. Automaton has 285 states and 426 transitions. Word has length 68 [2022-02-24 02:17:23,473 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 02:17:23,473 INFO L470 AbstractCegarLoop]: Abstraction has 285 states and 426 transitions. [2022-02-24 02:17:23,473 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.8) internal successors, (64), 4 states have internal predecessors, (64), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:17:23,473 INFO L276 IsEmpty]: Start isEmpty. Operand 285 states and 426 transitions. [2022-02-24 02:17:23,474 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-02-24 02:17:23,474 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 02:17:23,475 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 02:17:23,475 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-02-24 02:17:23,475 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 02:17:23,475 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 02:17:23,475 INFO L85 PathProgramCache]: Analyzing trace with hash -2142445385, now seen corresponding path program 1 times [2022-02-24 02:17:23,476 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 02:17:23,476 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [234077611] [2022-02-24 02:17:23,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 02:17:23,476 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 02:17:23,534 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 20 HavocedVariables, 0 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={1=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-24 02:17:23,535 INFO L275 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-02-24 02:17:23,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:17:23,636 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 02:17:23,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:17:23,641 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 02:17:28,110 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 02:17:28,110 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [234077611] [2022-02-24 02:17:28,110 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [234077611] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 02:17:28,110 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 02:17:28,111 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2022-02-24 02:17:28,111 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [158474780] [2022-02-24 02:17:28,111 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 02:17:28,111 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-02-24 02:17:28,111 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 02:17:28,112 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-02-24 02:17:28,112 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=154, Unknown=2, NotChecked=0, Total=210 [2022-02-24 02:17:28,112 INFO L87 Difference]: Start difference. First operand 285 states and 426 transitions. Second operand has 15 states, 15 states have (on average 4.266666666666667) internal successors, (64), 14 states have internal predecessors, (64), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:17:30,125 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 02:17:30,877 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 02:17:30,878 INFO L93 Difference]: Finished difference Result 430 states and 644 transitions. [2022-02-24 02:17:30,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-02-24 02:17:30,878 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 4.266666666666667) internal successors, (64), 14 states have internal predecessors, (64), 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 68 [2022-02-24 02:17:30,879 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 02:17:30,880 INFO L225 Difference]: With dead ends: 430 [2022-02-24 02:17:30,880 INFO L226 Difference]: Without dead ends: 297 [2022-02-24 02:17:30,881 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 4.4s TimeCoverageRelationStatistics Valid=54, Invalid=154, Unknown=2, NotChecked=0, Total=210 [2022-02-24 02:17:30,881 INFO L933 BasicCegarLoop]: 182 mSDtfsCounter, 136 mSDsluCounter, 596 mSDsCounter, 0 mSdLazyCounter, 751 mSolverCounterSat, 7 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 136 SdHoareTripleChecker+Valid, 778 SdHoareTripleChecker+Invalid, 786 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 751 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 27 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2022-02-24 02:17:30,881 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [136 Valid, 778 Invalid, 786 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 751 Invalid, 1 Unknown, 27 Unchecked, 2.7s Time] [2022-02-24 02:17:30,882 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 297 states. [2022-02-24 02:17:30,892 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 297 to 287. [2022-02-24 02:17:30,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 287 states, 282 states have (on average 1.5070921985815602) internal successors, (425), 282 states have internal predecessors, (425), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:17:30,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 287 states to 287 states and 429 transitions. [2022-02-24 02:17:30,896 INFO L78 Accepts]: Start accepts. Automaton has 287 states and 429 transitions. Word has length 68 [2022-02-24 02:17:30,896 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 02:17:30,896 INFO L470 AbstractCegarLoop]: Abstraction has 287 states and 429 transitions. [2022-02-24 02:17:30,896 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 4.266666666666667) internal successors, (64), 14 states have internal predecessors, (64), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:17:30,897 INFO L276 IsEmpty]: Start isEmpty. Operand 287 states and 429 transitions. [2022-02-24 02:17:30,897 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-02-24 02:17:30,897 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 02:17:30,898 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 02:17:30,898 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-02-24 02:17:30,898 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 02:17:30,898 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 02:17:30,899 INFO L85 PathProgramCache]: Analyzing trace with hash 1799433529, now seen corresponding path program 1 times [2022-02-24 02:17:30,899 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 02:17:30,899 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [134963671] [2022-02-24 02:17:30,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 02:17:30,899 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 02:17:30,971 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 20 HavocedVariables, 0 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={1=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-24 02:17:30,971 INFO L275 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-02-24 02:17:31,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:17:31,058 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 02:17:31,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:17:31,062 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 02:17:35,033 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 02:17:35,034 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [134963671] [2022-02-24 02:17:35,034 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [134963671] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 02:17:35,034 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 02:17:35,034 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2022-02-24 02:17:35,034 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [361365260] [2022-02-24 02:17:35,034 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 02:17:35,034 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-02-24 02:17:35,034 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 02:17:35,035 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-02-24 02:17:35,035 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=154, Unknown=2, NotChecked=0, Total=210 [2022-02-24 02:17:35,035 INFO L87 Difference]: Start difference. First operand 287 states and 429 transitions. Second operand has 15 states, 15 states have (on average 4.266666666666667) internal successors, (64), 14 states have internal predecessors, (64), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:17:37,046 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 02:17:37,791 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 02:17:37,791 INFO L93 Difference]: Finished difference Result 430 states and 644 transitions. [2022-02-24 02:17:37,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-02-24 02:17:37,791 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 4.266666666666667) internal successors, (64), 14 states have internal predecessors, (64), 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 68 [2022-02-24 02:17:37,792 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 02:17:37,794 INFO L225 Difference]: With dead ends: 430 [2022-02-24 02:17:37,794 INFO L226 Difference]: Without dead ends: 297 [2022-02-24 02:17:37,794 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 3.9s TimeCoverageRelationStatistics Valid=54, Invalid=154, Unknown=2, NotChecked=0, Total=210 [2022-02-24 02:17:37,795 INFO L933 BasicCegarLoop]: 187 mSDtfsCounter, 134 mSDsluCounter, 776 mSDsCounter, 0 mSdLazyCounter, 747 mSolverCounterSat, 8 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 134 SdHoareTripleChecker+Valid, 963 SdHoareTripleChecker+Invalid, 1205 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 747 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 449 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2022-02-24 02:17:37,795 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [134 Valid, 963 Invalid, 1205 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 747 Invalid, 1 Unknown, 449 Unchecked, 2.7s Time] [2022-02-24 02:17:37,796 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 297 states. [2022-02-24 02:17:37,806 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 297 to 285. [2022-02-24 02:17:37,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 285 states, 280 states have (on average 1.5071428571428571) internal successors, (422), 280 states have internal predecessors, (422), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:17:37,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 285 states to 285 states and 426 transitions. [2022-02-24 02:17:37,808 INFO L78 Accepts]: Start accepts. Automaton has 285 states and 426 transitions. Word has length 68 [2022-02-24 02:17:37,808 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 02:17:37,809 INFO L470 AbstractCegarLoop]: Abstraction has 285 states and 426 transitions. [2022-02-24 02:17:37,809 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 4.266666666666667) internal successors, (64), 14 states have internal predecessors, (64), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:17:37,809 INFO L276 IsEmpty]: Start isEmpty. Operand 285 states and 426 transitions. [2022-02-24 02:17:37,810 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-02-24 02:17:37,810 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 02:17:37,810 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 02:17:37,810 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-02-24 02:17:37,810 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 02:17:37,811 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 02:17:37,811 INFO L85 PathProgramCache]: Analyzing trace with hash 1681024006, now seen corresponding path program 1 times [2022-02-24 02:17:37,811 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 02:17:37,811 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1853780861] [2022-02-24 02:17:37,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 02:17:37,812 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 02:17:37,821 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-24 02:17:37,821 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-02-24 02:17:37,821 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 02:17:37,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:17:37,959 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 02:17:37,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:17:37,973 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 02:17:37,973 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 02:17:37,973 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1853780861] [2022-02-24 02:17:37,973 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1853780861] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 02:17:37,974 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 02:17:37,974 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-02-24 02:17:37,974 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2031943193] [2022-02-24 02:17:37,974 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 02:17:37,974 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-02-24 02:17:37,974 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 02:17:37,975 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-02-24 02:17:37,975 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-02-24 02:17:37,975 INFO L87 Difference]: Start difference. First operand 285 states and 426 transitions. Second operand has 5 states, 5 states have (on average 13.0) internal successors, (65), 4 states have internal predecessors, (65), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:17:39,986 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 02:17:40,457 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 02:17:40,457 INFO L93 Difference]: Finished difference Result 441 states and 656 transitions. [2022-02-24 02:17:40,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-02-24 02:17:40,458 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.0) internal successors, (65), 4 states have internal predecessors, (65), 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 69 [2022-02-24 02:17:40,458 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 02:17:40,460 INFO L225 Difference]: With dead ends: 441 [2022-02-24 02:17:40,460 INFO L226 Difference]: Without dead ends: 301 [2022-02-24 02:17:40,460 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-02-24 02:17:40,461 INFO L933 BasicCegarLoop]: 178 mSDtfsCounter, 21 mSDsluCounter, 277 mSDsCounter, 0 mSdLazyCounter, 348 mSolverCounterSat, 9 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 455 SdHoareTripleChecker+Invalid, 358 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 348 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2022-02-24 02:17:40,461 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [21 Valid, 455 Invalid, 358 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 348 Invalid, 1 Unknown, 0 Unchecked, 2.4s Time] [2022-02-24 02:17:40,462 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 301 states. [2022-02-24 02:17:40,472 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 301 to 285. [2022-02-24 02:17:40,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 285 states, 280 states have (on average 1.5035714285714286) internal successors, (421), 280 states have internal predecessors, (421), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:17:40,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 285 states to 285 states and 425 transitions. [2022-02-24 02:17:40,474 INFO L78 Accepts]: Start accepts. Automaton has 285 states and 425 transitions. Word has length 69 [2022-02-24 02:17:40,474 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 02:17:40,474 INFO L470 AbstractCegarLoop]: Abstraction has 285 states and 425 transitions. [2022-02-24 02:17:40,475 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.0) internal successors, (65), 4 states have internal predecessors, (65), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:17:40,475 INFO L276 IsEmpty]: Start isEmpty. Operand 285 states and 425 transitions. [2022-02-24 02:17:40,475 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-02-24 02:17:40,476 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 02:17:40,476 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 02:17:40,476 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-02-24 02:17:40,476 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 02:17:40,476 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 02:17:40,477 INFO L85 PathProgramCache]: Analyzing trace with hash -452212548, now seen corresponding path program 1 times [2022-02-24 02:17:40,477 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 02:17:40,477 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [319077133] [2022-02-24 02:17:40,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 02:17:40,477 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 02:17:40,537 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 21 HavocedVariables, 0 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={1=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-24 02:17:40,537 INFO L275 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-02-24 02:17:40,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:17:40,624 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 02:17:40,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:17:40,629 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 02:17:44,675 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 02:17:44,676 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [319077133] [2022-02-24 02:17:44,676 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [319077133] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 02:17:44,676 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 02:17:44,676 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-02-24 02:17:44,676 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1768204302] [2022-02-24 02:17:44,676 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 02:17:44,676 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-02-24 02:17:44,676 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 02:17:44,677 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-02-24 02:17:44,677 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=182, Unknown=1, NotChecked=0, Total=240 [2022-02-24 02:17:44,677 INFO L87 Difference]: Start difference. First operand 285 states and 425 transitions. Second operand has 16 states, 16 states have (on average 4.0625) internal successors, (65), 15 states have internal predecessors, (65), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:17:46,689 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 02:17:47,377 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 02:17:47,377 INFO L93 Difference]: Finished difference Result 430 states and 643 transitions. [2022-02-24 02:17:47,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-02-24 02:17:47,377 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 4.0625) internal successors, (65), 15 states have internal predecessors, (65), 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 69 [2022-02-24 02:17:47,378 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 02:17:47,379 INFO L225 Difference]: With dead ends: 430 [2022-02-24 02:17:47,379 INFO L226 Difference]: Without dead ends: 297 [2022-02-24 02:17:47,379 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.0s TimeCoverageRelationStatistics Valid=57, Invalid=182, Unknown=1, NotChecked=0, Total=240 [2022-02-24 02:17:47,380 INFO L933 BasicCegarLoop]: 180 mSDtfsCounter, 133 mSDsluCounter, 835 mSDsCounter, 0 mSdLazyCounter, 856 mSolverCounterSat, 9 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 133 SdHoareTripleChecker+Valid, 1015 SdHoareTripleChecker+Invalid, 1117 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 856 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 251 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2022-02-24 02:17:47,380 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [133 Valid, 1015 Invalid, 1117 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 856 Invalid, 1 Unknown, 251 Unchecked, 2.7s Time] [2022-02-24 02:17:47,381 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 297 states. [2022-02-24 02:17:47,391 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 297 to 287. [2022-02-24 02:17:47,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 287 states, 282 states have (on average 1.50354609929078) internal successors, (424), 282 states have internal predecessors, (424), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:17:47,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 287 states to 287 states and 428 transitions. [2022-02-24 02:17:47,393 INFO L78 Accepts]: Start accepts. Automaton has 287 states and 428 transitions. Word has length 69 [2022-02-24 02:17:47,393 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 02:17:47,393 INFO L470 AbstractCegarLoop]: Abstraction has 287 states and 428 transitions. [2022-02-24 02:17:47,393 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 4.0625) internal successors, (65), 15 states have internal predecessors, (65), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:17:47,393 INFO L276 IsEmpty]: Start isEmpty. Operand 287 states and 428 transitions. [2022-02-24 02:17:47,394 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-02-24 02:17:47,394 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 02:17:47,394 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 02:17:47,394 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-02-24 02:17:47,395 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 02:17:47,395 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 02:17:47,395 INFO L85 PathProgramCache]: Analyzing trace with hash -805300930, now seen corresponding path program 1 times [2022-02-24 02:17:47,395 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 02:17:47,395 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [259080546] [2022-02-24 02:17:47,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 02:17:47,396 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 02:17:47,446 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 21 HavocedVariables, 0 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={1=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-24 02:17:47,446 INFO L275 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-02-24 02:17:47,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:17:47,532 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 02:17:47,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:17:47,536 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 02:17:51,166 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 02:17:51,167 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [259080546] [2022-02-24 02:17:51,167 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [259080546] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 02:17:51,167 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 02:17:51,167 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-02-24 02:17:51,167 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1806750706] [2022-02-24 02:17:51,167 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 02:17:51,167 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-02-24 02:17:51,167 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 02:17:51,168 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-02-24 02:17:51,168 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=182, Unknown=1, NotChecked=0, Total=240 [2022-02-24 02:17:51,168 INFO L87 Difference]: Start difference. First operand 287 states and 428 transitions. Second operand has 16 states, 16 states have (on average 4.0625) internal successors, (65), 15 states have internal predecessors, (65), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:17:53,178 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 02:17:54,003 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 02:17:54,003 INFO L93 Difference]: Finished difference Result 430 states and 643 transitions. [2022-02-24 02:17:54,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-02-24 02:17:54,004 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 4.0625) internal successors, (65), 15 states have internal predecessors, (65), 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 69 [2022-02-24 02:17:54,004 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 02:17:54,005 INFO L225 Difference]: With dead ends: 430 [2022-02-24 02:17:54,005 INFO L226 Difference]: Without dead ends: 297 [2022-02-24 02:17:54,006 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=57, Invalid=182, Unknown=1, NotChecked=0, Total=240 [2022-02-24 02:17:54,006 INFO L933 BasicCegarLoop]: 185 mSDtfsCounter, 135 mSDsluCounter, 846 mSDsCounter, 0 mSdLazyCounter, 770 mSolverCounterSat, 8 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 135 SdHoareTripleChecker+Valid, 1031 SdHoareTripleChecker+Invalid, 1104 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 770 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 325 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2022-02-24 02:17:54,006 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [135 Valid, 1031 Invalid, 1104 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 770 Invalid, 1 Unknown, 325 Unchecked, 2.8s Time] [2022-02-24 02:17:54,007 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 297 states. [2022-02-24 02:17:54,019 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 297 to 285. [2022-02-24 02:17:54,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 285 states, 280 states have (on average 1.5035714285714286) internal successors, (421), 280 states have internal predecessors, (421), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:17:54,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 285 states to 285 states and 425 transitions. [2022-02-24 02:17:54,021 INFO L78 Accepts]: Start accepts. Automaton has 285 states and 425 transitions. Word has length 69 [2022-02-24 02:17:54,021 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 02:17:54,021 INFO L470 AbstractCegarLoop]: Abstraction has 285 states and 425 transitions. [2022-02-24 02:17:54,022 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 4.0625) internal successors, (65), 15 states have internal predecessors, (65), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:17:54,022 INFO L276 IsEmpty]: Start isEmpty. Operand 285 states and 425 transitions. [2022-02-24 02:17:54,023 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-02-24 02:17:54,023 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 02:17:54,023 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 02:17:54,023 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-02-24 02:17:54,023 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 02:17:54,023 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 02:17:54,023 INFO L85 PathProgramCache]: Analyzing trace with hash -1752801627, now seen corresponding path program 1 times [2022-02-24 02:17:54,024 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 02:17:54,024 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1827894624] [2022-02-24 02:17:54,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 02:17:54,024 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 02:17:54,033 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-24 02:17:54,033 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-02-24 02:17:54,033 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 02:17:54,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:17:54,140 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 02:17:54,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:17:54,145 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 02:17:54,145 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 02:17:54,146 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1827894624] [2022-02-24 02:17:54,146 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1827894624] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 02:17:54,146 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 02:17:54,146 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-02-24 02:17:54,146 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [103459311] [2022-02-24 02:17:54,146 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 02:17:54,146 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-02-24 02:17:54,146 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 02:17:54,147 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-02-24 02:17:54,147 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-02-24 02:17:54,147 INFO L87 Difference]: Start difference. First operand 285 states and 425 transitions. Second operand has 5 states, 5 states have (on average 13.0) internal successors, (65), 4 states have internal predecessors, (65), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:17:56,159 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 02:17:56,670 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 02:17:56,670 INFO L93 Difference]: Finished difference Result 460 states and 691 transitions. [2022-02-24 02:17:56,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-02-24 02:17:56,671 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.0) internal successors, (65), 4 states have internal predecessors, (65), 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 69 [2022-02-24 02:17:56,671 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 02:17:56,672 INFO L225 Difference]: With dead ends: 460 [2022-02-24 02:17:56,672 INFO L226 Difference]: Without dead ends: 327 [2022-02-24 02:17:56,673 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-02-24 02:17:56,673 INFO L933 BasicCegarLoop]: 231 mSDtfsCounter, 33 mSDsluCounter, 334 mSDsCounter, 0 mSdLazyCounter, 435 mSolverCounterSat, 10 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 565 SdHoareTripleChecker+Invalid, 446 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 435 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2022-02-24 02:17:56,673 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [33 Valid, 565 Invalid, 446 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 435 Invalid, 1 Unknown, 0 Unchecked, 2.5s Time] [2022-02-24 02:17:56,674 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 327 states. [2022-02-24 02:17:56,686 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 327 to 307. [2022-02-24 02:17:56,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 307 states, 302 states have (on average 1.5165562913907285) internal successors, (458), 302 states have internal predecessors, (458), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:17:56,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 307 states to 307 states and 462 transitions. [2022-02-24 02:17:56,688 INFO L78 Accepts]: Start accepts. Automaton has 307 states and 462 transitions. Word has length 69 [2022-02-24 02:17:56,688 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 02:17:56,688 INFO L470 AbstractCegarLoop]: Abstraction has 307 states and 462 transitions. [2022-02-24 02:17:56,688 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.0) internal successors, (65), 4 states have internal predecessors, (65), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:17:56,689 INFO L276 IsEmpty]: Start isEmpty. Operand 307 states and 462 transitions. [2022-02-24 02:17:56,689 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-02-24 02:17:56,689 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 02:17:56,690 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 02:17:56,690 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-02-24 02:17:56,690 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 02:17:56,690 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 02:17:56,690 INFO L85 PathProgramCache]: Analyzing trace with hash -1756332895, now seen corresponding path program 1 times [2022-02-24 02:17:56,690 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 02:17:56,691 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1094601770] [2022-02-24 02:17:56,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 02:17:56,691 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 02:17:56,701 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-24 02:17:56,701 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-02-24 02:17:56,701 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 02:17:56,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:17:56,808 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 02:17:56,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:17:56,814 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 02:17:56,814 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 02:17:56,814 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1094601770] [2022-02-24 02:17:56,814 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1094601770] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 02:17:56,814 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 02:17:56,814 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-02-24 02:17:56,814 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [590255450] [2022-02-24 02:17:56,814 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 02:17:56,815 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-02-24 02:17:56,815 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 02:17:56,815 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-02-24 02:17:56,815 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-02-24 02:17:56,815 INFO L87 Difference]: Start difference. First operand 307 states and 462 transitions. Second operand has 5 states, 5 states have (on average 13.2) internal successors, (66), 4 states have internal predecessors, (66), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:17:58,828 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 02:17:59,179 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 02:17:59,180 INFO L93 Difference]: Finished difference Result 475 states and 716 transitions. [2022-02-24 02:17:59,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-02-24 02:17:59,180 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.2) internal successors, (66), 4 states have internal predecessors, (66), 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 70 [2022-02-24 02:17:59,180 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 02:17:59,182 INFO L225 Difference]: With dead ends: 475 [2022-02-24 02:17:59,182 INFO L226 Difference]: Without dead ends: 313 [2022-02-24 02:17:59,182 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-02-24 02:17:59,183 INFO L933 BasicCegarLoop]: 185 mSDtfsCounter, 12 mSDsluCounter, 284 mSDsCounter, 0 mSdLazyCounter, 334 mSolverCounterSat, 5 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 469 SdHoareTripleChecker+Invalid, 340 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 334 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2022-02-24 02:17:59,183 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [12 Valid, 469 Invalid, 340 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 334 Invalid, 1 Unknown, 0 Unchecked, 2.3s Time] [2022-02-24 02:17:59,184 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 313 states. [2022-02-24 02:17:59,195 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 313 to 307. [2022-02-24 02:17:59,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 307 states, 302 states have (on average 1.5132450331125828) internal successors, (457), 302 states have internal predecessors, (457), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:17:59,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 307 states to 307 states and 461 transitions. [2022-02-24 02:17:59,197 INFO L78 Accepts]: Start accepts. Automaton has 307 states and 461 transitions. Word has length 70 [2022-02-24 02:17:59,197 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 02:17:59,197 INFO L470 AbstractCegarLoop]: Abstraction has 307 states and 461 transitions. [2022-02-24 02:17:59,197 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.2) internal successors, (66), 4 states have internal predecessors, (66), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:17:59,197 INFO L276 IsEmpty]: Start isEmpty. Operand 307 states and 461 transitions. [2022-02-24 02:17:59,198 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2022-02-24 02:17:59,198 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 02:17:59,199 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 02:17:59,199 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-02-24 02:17:59,199 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 02:17:59,199 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 02:17:59,199 INFO L85 PathProgramCache]: Analyzing trace with hash -2028938111, now seen corresponding path program 1 times [2022-02-24 02:17:59,199 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 02:17:59,199 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [573793460] [2022-02-24 02:17:59,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 02:17:59,200 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 02:17:59,217 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-24 02:17:59,217 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-02-24 02:17:59,217 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 02:17:59,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:17:59,357 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 02:17:59,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:17:59,361 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 02:17:59,362 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 02:17:59,362 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [573793460] [2022-02-24 02:17:59,362 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [573793460] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 02:17:59,362 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 02:17:59,362 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-02-24 02:17:59,362 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1055817727] [2022-02-24 02:17:59,362 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 02:17:59,362 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-02-24 02:17:59,362 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 02:17:59,363 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-02-24 02:17:59,363 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-02-24 02:17:59,363 INFO L87 Difference]: Start difference. First operand 307 states and 461 transitions. Second operand has 5 states, 5 states have (on average 14.2) internal successors, (71), 4 states have internal predecessors, (71), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:18:01,379 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 02:18:01,787 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 02:18:01,787 INFO L93 Difference]: Finished difference Result 592 states and 894 transitions. [2022-02-24 02:18:01,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-02-24 02:18:01,788 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.2) internal successors, (71), 4 states have internal predecessors, (71), 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 81 [2022-02-24 02:18:01,788 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 02:18:01,789 INFO L225 Difference]: With dead ends: 592 [2022-02-24 02:18:01,789 INFO L226 Difference]: Without dead ends: 311 [2022-02-24 02:18:01,790 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-02-24 02:18:01,791 INFO L933 BasicCegarLoop]: 187 mSDtfsCounter, 9 mSDsluCounter, 286 mSDsCounter, 0 mSdLazyCounter, 330 mSolverCounterSat, 4 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 473 SdHoareTripleChecker+Invalid, 335 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 330 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2022-02-24 02:18:01,791 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9 Valid, 473 Invalid, 335 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 330 Invalid, 1 Unknown, 0 Unchecked, 2.4s Time] [2022-02-24 02:18:01,792 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 311 states. [2022-02-24 02:18:01,804 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 311 to 307. [2022-02-24 02:18:01,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 307 states, 302 states have (on average 1.509933774834437) internal successors, (456), 302 states have internal predecessors, (456), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:18:01,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 307 states to 307 states and 460 transitions. [2022-02-24 02:18:01,806 INFO L78 Accepts]: Start accepts. Automaton has 307 states and 460 transitions. Word has length 81 [2022-02-24 02:18:01,806 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 02:18:01,806 INFO L470 AbstractCegarLoop]: Abstraction has 307 states and 460 transitions. [2022-02-24 02:18:01,806 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.2) internal successors, (71), 4 states have internal predecessors, (71), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:18:01,806 INFO L276 IsEmpty]: Start isEmpty. Operand 307 states and 460 transitions. [2022-02-24 02:18:01,807 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2022-02-24 02:18:01,808 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 02:18:01,808 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 02:18:01,808 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-02-24 02:18:01,808 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 02:18:01,808 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 02:18:01,808 INFO L85 PathProgramCache]: Analyzing trace with hash 41198688, now seen corresponding path program 1 times [2022-02-24 02:18:01,808 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 02:18:01,809 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [975500704] [2022-02-24 02:18:01,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 02:18:01,809 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 02:18:01,826 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-24 02:18:01,826 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-02-24 02:18:01,826 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 02:18:01,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:18:01,936 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 02:18:01,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:18:01,941 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 02:18:01,941 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 02:18:01,941 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [975500704] [2022-02-24 02:18:01,941 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [975500704] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 02:18:01,941 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 02:18:01,942 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-02-24 02:18:01,942 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [263044024] [2022-02-24 02:18:01,942 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 02:18:01,942 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-02-24 02:18:01,942 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 02:18:01,942 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-02-24 02:18:01,943 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-02-24 02:18:01,943 INFO L87 Difference]: Start difference. First operand 307 states and 460 transitions. Second operand has 5 states, 5 states have (on average 14.2) internal successors, (71), 4 states have internal predecessors, (71), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:18:03,958 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 02:18:04,341 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 02:18:04,341 INFO L93 Difference]: Finished difference Result 465 states and 702 transitions. [2022-02-24 02:18:04,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-02-24 02:18:04,342 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.2) internal successors, (71), 4 states have internal predecessors, (71), 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 81 [2022-02-24 02:18:04,342 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 02:18:04,342 INFO L225 Difference]: With dead ends: 465 [2022-02-24 02:18:04,342 INFO L226 Difference]: Without dead ends: 184 [2022-02-24 02:18:04,343 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-02-24 02:18:04,344 INFO L933 BasicCegarLoop]: 188 mSDtfsCounter, 7 mSDsluCounter, 287 mSDsCounter, 0 mSdLazyCounter, 328 mSolverCounterSat, 4 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 475 SdHoareTripleChecker+Invalid, 333 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 328 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2022-02-24 02:18:04,344 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7 Valid, 475 Invalid, 333 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 328 Invalid, 1 Unknown, 0 Unchecked, 2.4s Time] [2022-02-24 02:18:04,344 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 184 states. [2022-02-24 02:18:04,373 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 184 to 183. [2022-02-24 02:18:04,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 183 states, 178 states have (on average 1.5) internal successors, (267), 178 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) [2022-02-24 02:18:04,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 183 states to 183 states and 271 transitions. [2022-02-24 02:18:04,374 INFO L78 Accepts]: Start accepts. Automaton has 183 states and 271 transitions. Word has length 81 [2022-02-24 02:18:04,374 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 02:18:04,374 INFO L470 AbstractCegarLoop]: Abstraction has 183 states and 271 transitions. [2022-02-24 02:18:04,374 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.2) internal successors, (71), 4 states have internal predecessors, (71), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:18:04,375 INFO L276 IsEmpty]: Start isEmpty. Operand 183 states and 271 transitions. [2022-02-24 02:18:04,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2022-02-24 02:18:04,375 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 02:18:04,376 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 02:18:04,376 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-02-24 02:18:04,376 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 02:18:04,376 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 02:18:04,376 INFO L85 PathProgramCache]: Analyzing trace with hash 1534191848, now seen corresponding path program 1 times [2022-02-24 02:18:04,376 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 02:18:04,377 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [983831793] [2022-02-24 02:18:04,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 02:18:04,377 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 02:18:04,393 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-24 02:18:04,393 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-02-24 02:18:04,393 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 02:18:04,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:18:04,506 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 02:18:04,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:18:04,511 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 02:18:04,511 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 02:18:04,511 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [983831793] [2022-02-24 02:18:04,511 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [983831793] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 02:18:04,511 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 02:18:04,512 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-02-24 02:18:04,512 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1187048280] [2022-02-24 02:18:04,512 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 02:18:04,512 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-02-24 02:18:04,512 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 02:18:04,512 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-02-24 02:18:04,513 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-02-24 02:18:04,513 INFO L87 Difference]: Start difference. First operand 183 states and 271 transitions. Second operand has 5 states, 5 states have (on average 15.6) internal successors, (78), 4 states have internal predecessors, (78), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:18:06,528 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 02:18:07,164 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 02:18:07,164 INFO L93 Difference]: Finished difference Result 451 states and 684 transitions. [2022-02-24 02:18:07,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-02-24 02:18:07,164 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.6) internal successors, (78), 4 states have internal predecessors, (78), 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 82 [2022-02-24 02:18:07,165 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 02:18:07,166 INFO L225 Difference]: With dead ends: 451 [2022-02-24 02:18:07,166 INFO L226 Difference]: Without dead ends: 296 [2022-02-24 02:18:07,166 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-02-24 02:18:07,167 INFO L933 BasicCegarLoop]: 219 mSDtfsCounter, 137 mSDsluCounter, 317 mSDsCounter, 0 mSdLazyCounter, 575 mSolverCounterSat, 47 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 137 SdHoareTripleChecker+Valid, 536 SdHoareTripleChecker+Invalid, 623 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 575 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2022-02-24 02:18:07,167 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [137 Valid, 536 Invalid, 623 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 575 Invalid, 1 Unknown, 0 Unchecked, 2.6s Time] [2022-02-24 02:18:07,168 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 296 states. [2022-02-24 02:18:07,174 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 296 to 199. [2022-02-24 02:18:07,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 199 states, 194 states have (on average 1.5) internal successors, (291), 194 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) [2022-02-24 02:18:07,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 199 states to 199 states and 295 transitions. [2022-02-24 02:18:07,175 INFO L78 Accepts]: Start accepts. Automaton has 199 states and 295 transitions. Word has length 82 [2022-02-24 02:18:07,176 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 02:18:07,176 INFO L470 AbstractCegarLoop]: Abstraction has 199 states and 295 transitions. [2022-02-24 02:18:07,176 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.6) internal successors, (78), 4 states have internal predecessors, (78), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:18:07,176 INFO L276 IsEmpty]: Start isEmpty. Operand 199 states and 295 transitions. [2022-02-24 02:18:07,177 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2022-02-24 02:18:07,177 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 02:18:07,177 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 02:18:07,177 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-02-24 02:18:07,177 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 02:18:07,177 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 02:18:07,177 INFO L85 PathProgramCache]: Analyzing trace with hash -1972491592, now seen corresponding path program 1 times [2022-02-24 02:18:07,177 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 02:18:07,178 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1086516644] [2022-02-24 02:18:07,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 02:18:07,178 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 02:18:07,229 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 18 HavocedVariables, 0 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={1=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-24 02:18:07,229 INFO L275 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-02-24 02:18:07,265 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 18 HavocedVariables, 0 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={1=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-24 02:18:07,266 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-24 02:18:07,266 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-02-24 02:18:07,266 INFO L275 tedInterpolationCore]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2022-02-24 02:18:07,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:18:07,400 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 02:18:07,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:18:07,404 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 02:18:34,829 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 02:18:34,829 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1086516644] [2022-02-24 02:18:34,829 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1086516644] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 02:18:34,829 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 02:18:34,829 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [24] imperfect sequences [] total 24 [2022-02-24 02:18:34,829 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [606006149] [2022-02-24 02:18:34,829 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 02:18:34,830 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-02-24 02:18:34,830 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 02:18:34,830 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-02-24 02:18:34,830 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=448, Unknown=22, NotChecked=0, Total=552 [2022-02-24 02:18:34,830 INFO L87 Difference]: Start difference. First operand 199 states and 295 transitions. Second operand has 24 states, 24 states have (on average 3.2916666666666665) internal successors, (79), 23 states have internal predecessors, (79), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:18:36,848 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 02:18:37,917 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 02:18:37,918 INFO L93 Difference]: Finished difference Result 412 states and 616 transitions. [2022-02-24 02:18:37,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-02-24 02:18:37,919 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 3.2916666666666665) internal successors, (79), 23 states have internal predecessors, (79), 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 83 [2022-02-24 02:18:37,919 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 02:18:37,920 INFO L225 Difference]: With dead ends: 412 [2022-02-24 02:18:37,920 INFO L226 Difference]: Without dead ends: 241 [2022-02-24 02:18:37,921 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 16 SyntacticMatches, 1 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 115 ImplicationChecksByTransitivity, 27.3s TimeCoverageRelationStatistics Valid=82, Invalid=448, Unknown=22, NotChecked=0, Total=552 [2022-02-24 02:18:37,922 INFO L933 BasicCegarLoop]: 201 mSDtfsCounter, 58 mSDsluCounter, 801 mSDsCounter, 0 mSdLazyCounter, 791 mSolverCounterSat, 15 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 1002 SdHoareTripleChecker+Invalid, 1128 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 791 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 321 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2022-02-24 02:18:37,922 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [58 Valid, 1002 Invalid, 1128 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 791 Invalid, 1 Unknown, 321 Unchecked, 3.0s Time] [2022-02-24 02:18:37,928 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 241 states. [2022-02-24 02:18:37,939 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 241 to 207. [2022-02-24 02:18:37,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 207 states, 202 states have (on average 1.4851485148514851) internal successors, (300), 202 states have internal predecessors, (300), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:18:37,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 207 states to 207 states and 304 transitions. [2022-02-24 02:18:37,940 INFO L78 Accepts]: Start accepts. Automaton has 207 states and 304 transitions. Word has length 83 [2022-02-24 02:18:37,941 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 02:18:37,941 INFO L470 AbstractCegarLoop]: Abstraction has 207 states and 304 transitions. [2022-02-24 02:18:37,941 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 3.2916666666666665) internal successors, (79), 23 states have internal predecessors, (79), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:18:37,942 INFO L276 IsEmpty]: Start isEmpty. Operand 207 states and 304 transitions. [2022-02-24 02:18:37,943 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2022-02-24 02:18:37,943 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 02:18:37,943 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 02:18:37,943 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-02-24 02:18:37,944 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 02:18:37,944 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 02:18:37,944 INFO L85 PathProgramCache]: Analyzing trace with hash 102223983, now seen corresponding path program 1 times [2022-02-24 02:18:37,944 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 02:18:37,944 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1166047328] [2022-02-24 02:18:37,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 02:18:37,945 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 02:18:37,968 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-24 02:18:37,969 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-02-24 02:18:37,969 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 02:18:38,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:18:38,101 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 02:18:38,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:18:38,105 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 02:18:38,106 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 02:18:38,106 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1166047328] [2022-02-24 02:18:38,106 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1166047328] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 02:18:38,106 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 02:18:38,106 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-02-24 02:18:38,106 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1901172797] [2022-02-24 02:18:38,106 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 02:18:38,107 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-02-24 02:18:38,107 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 02:18:38,107 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-02-24 02:18:38,108 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-02-24 02:18:38,108 INFO L87 Difference]: Start difference. First operand 207 states and 304 transitions. Second operand has 5 states, 5 states have (on average 15.8) internal successors, (79), 4 states have internal predecessors, (79), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:18:40,121 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 02:18:40,625 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 02:18:40,625 INFO L93 Difference]: Finished difference Result 396 states and 591 transitions. [2022-02-24 02:18:40,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-02-24 02:18:40,625 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.8) internal successors, (79), 4 states have internal predecessors, (79), 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 83 [2022-02-24 02:18:40,626 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 02:18:40,626 INFO L225 Difference]: With dead ends: 396 [2022-02-24 02:18:40,626 INFO L226 Difference]: Without dead ends: 225 [2022-02-24 02:18:40,627 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-02-24 02:18:40,640 INFO L933 BasicCegarLoop]: 187 mSDtfsCounter, 36 mSDsluCounter, 290 mSDsCounter, 0 mSdLazyCounter, 376 mSolverCounterSat, 9 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 477 SdHoareTripleChecker+Invalid, 386 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 376 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2022-02-24 02:18:40,640 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [36 Valid, 477 Invalid, 386 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 376 Invalid, 1 Unknown, 0 Unchecked, 2.5s Time] [2022-02-24 02:18:40,641 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 225 states. [2022-02-24 02:18:40,649 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 225 to 207. [2022-02-24 02:18:40,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 207 states, 202 states have (on average 1.4801980198019802) internal successors, (299), 202 states have internal predecessors, (299), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:18:40,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 207 states to 207 states and 303 transitions. [2022-02-24 02:18:40,651 INFO L78 Accepts]: Start accepts. Automaton has 207 states and 303 transitions. Word has length 83 [2022-02-24 02:18:40,651 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 02:18:40,651 INFO L470 AbstractCegarLoop]: Abstraction has 207 states and 303 transitions. [2022-02-24 02:18:40,651 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.8) internal successors, (79), 4 states have internal predecessors, (79), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:18:40,652 INFO L276 IsEmpty]: Start isEmpty. Operand 207 states and 303 transitions. [2022-02-24 02:18:40,652 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2022-02-24 02:18:40,652 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 02:18:40,652 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 02:18:40,652 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-02-24 02:18:40,653 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 02:18:40,653 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 02:18:40,653 INFO L85 PathProgramCache]: Analyzing trace with hash 602875504, now seen corresponding path program 1 times [2022-02-24 02:18:40,653 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 02:18:40,654 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1613219457] [2022-02-24 02:18:40,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 02:18:40,654 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 02:18:40,668 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-24 02:18:40,668 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-02-24 02:18:40,668 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 02:18:40,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:18:40,802 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 02:18:40,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:18:40,807 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 02:18:40,807 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 02:18:40,807 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1613219457] [2022-02-24 02:18:40,807 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1613219457] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 02:18:40,807 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 02:18:40,807 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-02-24 02:18:40,807 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [85906268] [2022-02-24 02:18:40,808 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 02:18:40,808 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-02-24 02:18:40,808 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 02:18:40,808 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-02-24 02:18:40,808 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-02-24 02:18:40,809 INFO L87 Difference]: Start difference. First operand 207 states and 303 transitions. Second operand has 5 states, 5 states have (on average 15.8) internal successors, (79), 4 states have internal predecessors, (79), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:18:42,821 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 02:18:43,279 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 02:18:43,279 INFO L93 Difference]: Finished difference Result 395 states and 588 transitions. [2022-02-24 02:18:43,281 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-02-24 02:18:43,282 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.8) internal successors, (79), 4 states have internal predecessors, (79), 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 83 [2022-02-24 02:18:43,282 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 02:18:43,283 INFO L225 Difference]: With dead ends: 395 [2022-02-24 02:18:43,283 INFO L226 Difference]: Without dead ends: 224 [2022-02-24 02:18:43,284 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-02-24 02:18:43,284 INFO L933 BasicCegarLoop]: 188 mSDtfsCounter, 34 mSDsluCounter, 291 mSDsCounter, 0 mSdLazyCounter, 374 mSolverCounterSat, 9 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 479 SdHoareTripleChecker+Invalid, 384 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 374 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2022-02-24 02:18:43,284 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [34 Valid, 479 Invalid, 384 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 374 Invalid, 1 Unknown, 0 Unchecked, 2.4s Time] [2022-02-24 02:18:43,285 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 224 states. [2022-02-24 02:18:43,293 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 224 to 207. [2022-02-24 02:18:43,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 207 states, 202 states have (on average 1.4752475247524752) internal successors, (298), 202 states have internal predecessors, (298), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:18:43,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 207 states to 207 states and 302 transitions. [2022-02-24 02:18:43,294 INFO L78 Accepts]: Start accepts. Automaton has 207 states and 302 transitions. Word has length 83 [2022-02-24 02:18:43,295 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 02:18:43,295 INFO L470 AbstractCegarLoop]: Abstraction has 207 states and 302 transitions. [2022-02-24 02:18:43,295 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.8) internal successors, (79), 4 states have internal predecessors, (79), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:18:43,295 INFO L276 IsEmpty]: Start isEmpty. Operand 207 states and 302 transitions. [2022-02-24 02:18:43,295 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2022-02-24 02:18:43,296 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 02:18:43,296 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 02:18:43,296 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-02-24 02:18:43,296 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 02:18:43,296 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 02:18:43,296 INFO L85 PathProgramCache]: Analyzing trace with hash 16001879, now seen corresponding path program 1 times [2022-02-24 02:18:43,296 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 02:18:43,297 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [482661789] [2022-02-24 02:18:43,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 02:18:43,298 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 02:18:43,375 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 18 HavocedVariables, 0 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={1=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-24 02:18:43,376 INFO L275 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-02-24 02:18:43,376 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-24 02:18:43,376 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-02-24 02:18:43,424 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 18 HavocedVariables, 0 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={1=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-24 02:18:43,424 INFO L275 tedInterpolationCore]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2022-02-24 02:18:43,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:18:43,549 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 02:18:43,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:18:43,554 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 02:18:50,432 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 02:18:50,432 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [482661789] [2022-02-24 02:18:50,432 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [482661789] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 02:18:50,432 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 02:18:50,432 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-02-24 02:18:50,432 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [695784253] [2022-02-24 02:18:50,432 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 02:18:50,433 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-02-24 02:18:50,433 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 02:18:50,433 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-02-24 02:18:50,433 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=314, Unknown=3, NotChecked=0, Total=380 [2022-02-24 02:18:50,434 INFO L87 Difference]: Start difference. First operand 207 states and 302 transitions. Second operand has 20 states, 20 states have (on average 3.95) internal successors, (79), 19 states have internal predecessors, (79), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:18:52,448 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 02:18:53,100 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 02:18:53,100 INFO L93 Difference]: Finished difference Result 379 states and 565 transitions. [2022-02-24 02:18:53,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-02-24 02:18:53,100 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 3.95) internal successors, (79), 19 states have internal predecessors, (79), 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 84 [2022-02-24 02:18:53,101 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 02:18:53,102 INFO L225 Difference]: With dead ends: 379 [2022-02-24 02:18:53,102 INFO L226 Difference]: Without dead ends: 208 [2022-02-24 02:18:53,102 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 6.8s TimeCoverageRelationStatistics Valid=63, Invalid=314, Unknown=3, NotChecked=0, Total=380 [2022-02-24 02:18:53,103 INFO L933 BasicCegarLoop]: 186 mSDtfsCounter, 11 mSDsluCounter, 996 mSDsCounter, 0 mSdLazyCounter, 764 mSolverCounterSat, 14 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 1182 SdHoareTripleChecker+Invalid, 1181 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 764 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 402 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2022-02-24 02:18:53,103 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [11 Valid, 1182 Invalid, 1181 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 764 Invalid, 1 Unknown, 402 Unchecked, 2.6s Time] [2022-02-24 02:18:53,104 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 208 states. [2022-02-24 02:18:53,112 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 208 to 208. [2022-02-24 02:18:53,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 208 states, 203 states have (on average 1.4729064039408868) internal successors, (299), 203 states have internal predecessors, (299), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:18:53,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 208 states to 208 states and 303 transitions. [2022-02-24 02:18:53,114 INFO L78 Accepts]: Start accepts. Automaton has 208 states and 303 transitions. Word has length 84 [2022-02-24 02:18:53,114 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 02:18:53,114 INFO L470 AbstractCegarLoop]: Abstraction has 208 states and 303 transitions. [2022-02-24 02:18:53,114 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 3.95) internal successors, (79), 19 states have internal predecessors, (79), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:18:53,114 INFO L276 IsEmpty]: Start isEmpty. Operand 208 states and 303 transitions. [2022-02-24 02:18:53,115 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2022-02-24 02:18:53,115 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 02:18:53,115 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 02:18:53,115 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-02-24 02:18:53,115 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 02:18:53,115 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 02:18:53,115 INFO L85 PathProgramCache]: Analyzing trace with hash 598981329, now seen corresponding path program 1 times [2022-02-24 02:18:53,116 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 02:18:53,116 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [743933485] [2022-02-24 02:18:53,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 02:18:53,116 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 02:18:53,190 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 19 HavocedVariables, 0 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={1=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-24 02:18:53,191 INFO L275 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-02-24 02:18:53,191 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-24 02:18:53,191 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-02-24 02:18:53,238 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 19 HavocedVariables, 0 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={1=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-24 02:18:53,239 INFO L275 tedInterpolationCore]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2022-02-24 02:18:53,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:18:53,363 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 02:18:53,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:18:53,369 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 02:20:16,869 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 02:20:16,869 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [743933485] [2022-02-24 02:20:16,869 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [743933485] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 02:20:16,869 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 02:20:16,870 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2022-02-24 02:20:16,870 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1522977468] [2022-02-24 02:20:16,870 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 02:20:16,871 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-02-24 02:20:16,871 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 02:20:16,872 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-02-24 02:20:16,872 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=493, Unknown=29, NotChecked=0, Total=600 [2022-02-24 02:20:16,872 INFO L87 Difference]: Start difference. First operand 208 states and 303 transitions. Second operand has 25 states, 25 states have (on average 3.2) internal successors, (80), 24 states have internal predecessors, (80), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:20:18,885 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 02:20:19,224 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 02:20:19,224 INFO L93 Difference]: Finished difference Result 392 states and 583 transitions. [2022-02-24 02:20:19,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-02-24 02:20:19,225 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.2) internal successors, (80), 24 states have internal predecessors, (80), 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 84 [2022-02-24 02:20:19,225 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 02:20:19,226 INFO L225 Difference]: With dead ends: 392 [2022-02-24 02:20:19,226 INFO L226 Difference]: Without dead ends: 221 [2022-02-24 02:20:19,227 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 16 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 79.0s TimeCoverageRelationStatistics Valid=78, Invalid=493, Unknown=29, NotChecked=0, Total=600 [2022-02-24 02:20:19,227 INFO L933 BasicCegarLoop]: 188 mSDtfsCounter, 18 mSDsluCounter, 1214 mSDsCounter, 0 mSdLazyCounter, 188 mSolverCounterSat, 2 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 1402 SdHoareTripleChecker+Invalid, 1900 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 188 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 1709 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2022-02-24 02:20:19,227 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [18 Valid, 1402 Invalid, 1900 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 188 Invalid, 1 Unknown, 1709 Unchecked, 2.3s Time] [2022-02-24 02:20:19,228 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 221 states. [2022-02-24 02:20:19,240 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 221 to 209. [2022-02-24 02:20:19,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 209 states, 204 states have (on average 1.4705882352941178) internal successors, (300), 204 states have internal predecessors, (300), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:20:19,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 209 states to 209 states and 304 transitions. [2022-02-24 02:20:19,241 INFO L78 Accepts]: Start accepts. Automaton has 209 states and 304 transitions. Word has length 84 [2022-02-24 02:20:19,241 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 02:20:19,242 INFO L470 AbstractCegarLoop]: Abstraction has 209 states and 304 transitions. [2022-02-24 02:20:19,242 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 3.2) internal successors, (80), 24 states have internal predecessors, (80), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:20:19,242 INFO L276 IsEmpty]: Start isEmpty. Operand 209 states and 304 transitions. [2022-02-24 02:20:19,242 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2022-02-24 02:20:19,242 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 02:20:19,243 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 02:20:19,243 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-02-24 02:20:19,243 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 02:20:19,243 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 02:20:19,243 INFO L85 PathProgramCache]: Analyzing trace with hash -1328533539, now seen corresponding path program 1 times [2022-02-24 02:20:19,243 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 02:20:19,244 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [792183868] [2022-02-24 02:20:19,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 02:20:19,244 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 02:20:19,303 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 20 HavocedVariables, 0 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={1=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-24 02:20:19,303 INFO L275 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-02-24 02:20:19,304 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-24 02:20:19,304 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-02-24 02:20:19,348 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 20 HavocedVariables, 0 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={1=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-24 02:20:19,348 INFO L275 tedInterpolationCore]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2022-02-24 02:20:19,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:20:19,593 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 02:20:19,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:20:19,598 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 02:21:49,668 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 02:21:49,669 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [792183868] [2022-02-24 02:21:49,669 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [792183868] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 02:21:49,669 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 02:21:49,669 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2022-02-24 02:21:49,669 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1715600270] [2022-02-24 02:21:49,669 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 02:21:49,669 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-02-24 02:21:49,669 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 02:21:49,670 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-02-24 02:21:49,670 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=538, Unknown=31, NotChecked=0, Total=650 [2022-02-24 02:21:49,670 INFO L87 Difference]: Start difference. First operand 209 states and 304 transitions. Second operand has 26 states, 26 states have (on average 3.1153846153846154) internal successors, (81), 25 states have internal predecessors, (81), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:21:51,683 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 02:21:52,188 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 02:21:52,188 INFO L93 Difference]: Finished difference Result 410 states and 606 transitions. [2022-02-24 02:21:52,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2022-02-24 02:21:52,188 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 3.1153846153846154) internal successors, (81), 25 states have internal predecessors, (81), 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 85 [2022-02-24 02:21:52,189 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 02:21:52,189 INFO L225 Difference]: With dead ends: 410 [2022-02-24 02:21:52,189 INFO L226 Difference]: Without dead ends: 239 [2022-02-24 02:21:52,190 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 16 SyntacticMatches, 1 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 85.3s TimeCoverageRelationStatistics Valid=87, Invalid=584, Unknown=31, NotChecked=0, Total=702 [2022-02-24 02:21:52,190 INFO L933 BasicCegarLoop]: 203 mSDtfsCounter, 61 mSDsluCounter, 619 mSDsCounter, 0 mSdLazyCounter, 245 mSolverCounterSat, 6 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 822 SdHoareTripleChecker+Invalid, 924 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 245 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 672 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2022-02-24 02:21:52,191 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [61 Valid, 822 Invalid, 924 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 245 Invalid, 1 Unknown, 672 Unchecked, 2.4s Time] [2022-02-24 02:21:52,191 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 239 states. [2022-02-24 02:21:52,207 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 239 to 210. [2022-02-24 02:21:52,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 210 states, 205 states have (on average 1.4682926829268292) internal successors, (301), 205 states have internal predecessors, (301), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:21:52,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 210 states to 210 states and 305 transitions. [2022-02-24 02:21:52,208 INFO L78 Accepts]: Start accepts. Automaton has 210 states and 305 transitions. Word has length 85 [2022-02-24 02:21:52,208 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 02:21:52,208 INFO L470 AbstractCegarLoop]: Abstraction has 210 states and 305 transitions. [2022-02-24 02:21:52,208 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 3.1153846153846154) internal successors, (81), 25 states have internal predecessors, (81), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:21:52,209 INFO L276 IsEmpty]: Start isEmpty. Operand 210 states and 305 transitions. [2022-02-24 02:21:52,209 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2022-02-24 02:21:52,209 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 02:21:52,209 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 02:21:52,210 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-02-24 02:21:52,210 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 02:21:52,210 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 02:21:52,210 INFO L85 PathProgramCache]: Analyzing trace with hash -1771086620, now seen corresponding path program 1 times [2022-02-24 02:21:52,210 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 02:21:52,210 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [605243968] [2022-02-24 02:21:52,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 02:21:52,211 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 02:21:52,290 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 19 HavocedVariables, 0 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={1=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-24 02:21:52,291 INFO L275 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-02-24 02:21:52,291 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-24 02:21:52,291 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-02-24 02:21:52,350 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 18 HavocedVariables, 0 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={1=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-24 02:21:52,351 INFO L275 tedInterpolationCore]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2022-02-24 02:21:52,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:21:52,512 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 02:21:52,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:21:52,516 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 02:23:14,641 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 02:23:14,641 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [605243968] [2022-02-24 02:23:14,642 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [605243968] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 02:23:14,642 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 02:23:14,642 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2022-02-24 02:23:14,642 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [141303157] [2022-02-24 02:23:14,642 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 02:23:14,642 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-02-24 02:23:14,642 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 02:23:14,643 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-02-24 02:23:14,643 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=536, Unknown=28, NotChecked=0, Total=650 [2022-02-24 02:23:14,643 INFO L87 Difference]: Start difference. First operand 210 states and 305 transitions. Second operand has 26 states, 26 states have (on average 3.1538461538461537) internal successors, (82), 25 states have internal predecessors, (82), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:23:16,656 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 02:23:17,612 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 02:23:17,612 INFO L93 Difference]: Finished difference Result 419 states and 619 transitions. [2022-02-24 02:23:17,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2022-02-24 02:23:17,614 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 3.1538461538461537) internal successors, (82), 25 states have internal predecessors, (82), 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 86 [2022-02-24 02:23:17,614 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 02:23:17,615 INFO L225 Difference]: With dead ends: 419 [2022-02-24 02:23:17,615 INFO L226 Difference]: Without dead ends: 248 [2022-02-24 02:23:17,616 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 17 SyntacticMatches, 1 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 153 ImplicationChecksByTransitivity, 78.2s TimeCoverageRelationStatistics Valid=140, Invalid=1022, Unknown=28, NotChecked=0, Total=1190 [2022-02-24 02:23:17,616 INFO L933 BasicCegarLoop]: 210 mSDtfsCounter, 44 mSDsluCounter, 1047 mSDsCounter, 0 mSdLazyCounter, 269 mSolverCounterSat, 14 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 1257 SdHoareTripleChecker+Invalid, 1610 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 269 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 1326 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2022-02-24 02:23:17,617 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [44 Valid, 1257 Invalid, 1610 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 269 Invalid, 1 Unknown, 1326 Unchecked, 2.4s Time] [2022-02-24 02:23:17,617 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 248 states. [2022-02-24 02:23:17,635 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 248 to 217. [2022-02-24 02:23:17,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 217 states, 212 states have (on average 1.4622641509433962) internal successors, (310), 212 states have internal predecessors, (310), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:23:17,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 217 states to 217 states and 314 transitions. [2022-02-24 02:23:17,637 INFO L78 Accepts]: Start accepts. Automaton has 217 states and 314 transitions. Word has length 86 [2022-02-24 02:23:17,637 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 02:23:17,637 INFO L470 AbstractCegarLoop]: Abstraction has 217 states and 314 transitions. [2022-02-24 02:23:17,637 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 3.1538461538461537) internal successors, (82), 25 states have internal predecessors, (82), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:23:17,637 INFO L276 IsEmpty]: Start isEmpty. Operand 217 states and 314 transitions. [2022-02-24 02:23:17,638 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2022-02-24 02:23:17,638 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 02:23:17,638 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 02:23:17,638 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-02-24 02:23:17,638 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 02:23:17,639 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 02:23:17,639 INFO L85 PathProgramCache]: Analyzing trace with hash -990749098, now seen corresponding path program 1 times [2022-02-24 02:23:17,639 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 02:23:17,639 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1909760700] [2022-02-24 02:23:17,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 02:23:17,639 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 02:23:17,716 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 21 HavocedVariables, 0 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={1=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-24 02:23:17,717 INFO L275 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-02-24 02:23:17,771 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 21 HavocedVariables, 0 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={1=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-24 02:23:17,772 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-24 02:23:17,772 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-02-24 02:23:17,772 INFO L275 tedInterpolationCore]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2022-02-24 02:23:17,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:23:17,891 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 02:23:17,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:23:17,896 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 02:24:16,442 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 02:24:16,442 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1909760700] [2022-02-24 02:24:16,442 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1909760700] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 02:24:16,442 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 02:24:16,443 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [27] imperfect sequences [] total 27 [2022-02-24 02:24:16,443 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [532372084] [2022-02-24 02:24:16,443 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 02:24:16,443 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-02-24 02:24:16,443 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 02:24:16,443 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-02-24 02:24:16,444 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=580, Unknown=31, NotChecked=0, Total=702 [2022-02-24 02:24:16,444 INFO L87 Difference]: Start difference. First operand 217 states and 314 transitions. Second operand has 27 states, 27 states have (on average 3.037037037037037) internal successors, (82), 26 states have internal predecessors, (82), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:24:18,455 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 02:24:19,310 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 02:24:19,311 INFO L93 Difference]: Finished difference Result 405 states and 599 transitions. [2022-02-24 02:24:19,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-02-24 02:24:19,311 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 3.037037037037037) internal successors, (82), 26 states have internal predecessors, (82), 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 86 [2022-02-24 02:24:19,311 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 02:24:19,312 INFO L225 Difference]: With dead ends: 405 [2022-02-24 02:24:19,312 INFO L226 Difference]: Without dead ends: 234 [2022-02-24 02:24:19,313 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 16 SyntacticMatches, 1 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 154 ImplicationChecksByTransitivity, 58.4s TimeCoverageRelationStatistics Valid=91, Invalid=580, Unknown=31, NotChecked=0, Total=702 [2022-02-24 02:24:19,313 INFO L933 BasicCegarLoop]: 188 mSDtfsCounter, 33 mSDsluCounter, 908 mSDsCounter, 0 mSdLazyCounter, 685 mSolverCounterSat, 15 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 1096 SdHoareTripleChecker+Invalid, 1537 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 685 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 836 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2022-02-24 02:24:19,313 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [33 Valid, 1096 Invalid, 1537 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 685 Invalid, 1 Unknown, 836 Unchecked, 2.8s Time] [2022-02-24 02:24:19,314 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 234 states. [2022-02-24 02:24:19,330 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 234 to 218. [2022-02-24 02:24:19,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 218 states, 213 states have (on average 1.460093896713615) internal successors, (311), 213 states have internal predecessors, (311), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:24:19,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 218 states and 315 transitions. [2022-02-24 02:24:19,331 INFO L78 Accepts]: Start accepts. Automaton has 218 states and 315 transitions. Word has length 86 [2022-02-24 02:24:19,331 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 02:24:19,332 INFO L470 AbstractCegarLoop]: Abstraction has 218 states and 315 transitions. [2022-02-24 02:24:19,332 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 3.037037037037037) internal successors, (82), 26 states have internal predecessors, (82), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:24:19,332 INFO L276 IsEmpty]: Start isEmpty. Operand 218 states and 315 transitions. [2022-02-24 02:24:19,332 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2022-02-24 02:24:19,332 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 02:24:19,332 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 02:24:19,333 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2022-02-24 02:24:19,333 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 02:24:19,333 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 02:24:19,333 INFO L85 PathProgramCache]: Analyzing trace with hash -589027322, now seen corresponding path program 1 times [2022-02-24 02:24:19,333 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 02:24:19,333 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [73408208] [2022-02-24 02:24:19,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 02:24:19,334 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 02:24:19,393 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 21 HavocedVariables, 0 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={1=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-24 02:24:19,393 INFO L275 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-02-24 02:24:19,433 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 18 HavocedVariables, 0 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={1=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-24 02:24:19,434 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-24 02:24:19,434 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-02-24 02:24:19,434 INFO L275 tedInterpolationCore]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2022-02-24 02:24:19,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:24:19,553 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 02:24:19,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:24:19,558 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 02:25:01,882 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 02:25:01,883 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [73408208] [2022-02-24 02:25:01,883 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [73408208] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 02:25:01,883 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 02:25:01,883 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [27] imperfect sequences [] total 27 [2022-02-24 02:25:01,883 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1605733038] [2022-02-24 02:25:01,883 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 02:25:01,883 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-02-24 02:25:01,883 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 02:25:01,884 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-02-24 02:25:01,884 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=575, Unknown=29, NotChecked=0, Total=702 [2022-02-24 02:25:01,884 INFO L87 Difference]: Start difference. First operand 218 states and 315 transitions. Second operand has 27 states, 27 states have (on average 3.074074074074074) internal successors, (83), 26 states have internal predecessors, (83), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:25:03,899 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 02:25:05,394 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 02:25:05,394 INFO L93 Difference]: Finished difference Result 427 states and 628 transitions. [2022-02-24 02:25:05,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-02-24 02:25:05,395 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 3.074074074074074) internal successors, (83), 26 states have internal predecessors, (83), 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 87 [2022-02-24 02:25:05,395 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 02:25:05,396 INFO L225 Difference]: With dead ends: 427 [2022-02-24 02:25:05,396 INFO L226 Difference]: Without dead ends: 256 [2022-02-24 02:25:05,396 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 17 SyntacticMatches, 1 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 157 ImplicationChecksByTransitivity, 42.2s TimeCoverageRelationStatistics Valid=98, Invalid=575, Unknown=29, NotChecked=0, Total=702 [2022-02-24 02:25:05,397 INFO L933 BasicCegarLoop]: 212 mSDtfsCounter, 51 mSDsluCounter, 1889 mSDsCounter, 0 mSdLazyCounter, 1503 mSolverCounterSat, 15 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 2101 SdHoareTripleChecker+Invalid, 2516 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 1503 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 997 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2022-02-24 02:25:05,397 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [51 Valid, 2101 Invalid, 2516 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 1503 Invalid, 1 Unknown, 997 Unchecked, 3.5s Time] [2022-02-24 02:25:05,397 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 256 states. [2022-02-24 02:25:05,421 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 256 to 219. [2022-02-24 02:25:05,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 219 states, 214 states have (on average 1.4579439252336448) internal successors, (312), 214 states have internal predecessors, (312), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:25:05,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 219 states to 219 states and 316 transitions. [2022-02-24 02:25:05,422 INFO L78 Accepts]: Start accepts. Automaton has 219 states and 316 transitions. Word has length 87 [2022-02-24 02:25:05,422 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 02:25:05,422 INFO L470 AbstractCegarLoop]: Abstraction has 219 states and 316 transitions. [2022-02-24 02:25:05,422 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 3.074074074074074) internal successors, (83), 26 states have internal predecessors, (83), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:25:05,422 INFO L276 IsEmpty]: Start isEmpty. Operand 219 states and 316 transitions. [2022-02-24 02:25:05,423 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2022-02-24 02:25:05,423 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 02:25:05,423 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 02:25:05,423 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2022-02-24 02:25:05,423 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 02:25:05,424 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 02:25:05,424 INFO L85 PathProgramCache]: Analyzing trace with hash 1523643018, now seen corresponding path program 1 times [2022-02-24 02:25:05,424 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 02:25:05,424 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1727857053] [2022-02-24 02:25:05,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 02:25:05,424 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 02:25:05,507 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 22 HavocedVariables, 0 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={1=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-24 02:25:05,508 INFO L275 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-02-24 02:25:05,544 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 18 HavocedVariables, 0 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={1=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-24 02:25:05,544 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-24 02:25:05,544 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-02-24 02:25:05,545 INFO L275 tedInterpolationCore]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2022-02-24 02:25:05,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:25:05,666 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 02:25:05,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:25:05,671 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 02:25:36,988 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 02:25:36,989 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1727857053] [2022-02-24 02:25:36,989 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1727857053] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 02:25:36,989 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 02:25:36,989 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [27] imperfect sequences [] total 27 [2022-02-24 02:25:36,989 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1943870198] [2022-02-24 02:25:36,989 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 02:25:36,989 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-02-24 02:25:36,989 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 02:25:36,990 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-02-24 02:25:36,990 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=576, Unknown=27, NotChecked=0, Total=702 [2022-02-24 02:25:36,990 INFO L87 Difference]: Start difference. First operand 219 states and 316 transitions. Second operand has 27 states, 27 states have (on average 3.074074074074074) internal successors, (83), 26 states have internal predecessors, (83), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:25:39,007 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 02:25:40,128 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 02:25:40,129 INFO L93 Difference]: Finished difference Result 433 states and 635 transitions. [2022-02-24 02:25:40,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-02-24 02:25:40,129 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 3.074074074074074) internal successors, (83), 26 states have internal predecessors, (83), 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 87 [2022-02-24 02:25:40,129 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 02:25:40,130 INFO L225 Difference]: With dead ends: 433 [2022-02-24 02:25:40,131 INFO L226 Difference]: Without dead ends: 262 [2022-02-24 02:25:40,131 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 17 SyntacticMatches, 1 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 154 ImplicationChecksByTransitivity, 31.2s TimeCoverageRelationStatistics Valid=99, Invalid=576, Unknown=27, NotChecked=0, Total=702 [2022-02-24 02:25:40,132 INFO L933 BasicCegarLoop]: 207 mSDtfsCounter, 51 mSDsluCounter, 1106 mSDsCounter, 0 mSdLazyCounter, 899 mSolverCounterSat, 16 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 1313 SdHoareTripleChecker+Invalid, 1502 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 899 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 586 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2022-02-24 02:25:40,132 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [51 Valid, 1313 Invalid, 1502 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 899 Invalid, 1 Unknown, 586 Unchecked, 3.1s Time] [2022-02-24 02:25:40,132 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 262 states. [2022-02-24 02:25:40,158 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 262 to 221. [2022-02-24 02:25:40,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 221 states, 216 states have (on average 1.462962962962963) internal successors, (316), 216 states have internal predecessors, (316), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:25:40,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 221 states to 221 states and 320 transitions. [2022-02-24 02:25:40,159 INFO L78 Accepts]: Start accepts. Automaton has 221 states and 320 transitions. Word has length 87 [2022-02-24 02:25:40,160 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 02:25:40,160 INFO L470 AbstractCegarLoop]: Abstraction has 221 states and 320 transitions. [2022-02-24 02:25:40,160 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 3.074074074074074) internal successors, (83), 26 states have internal predecessors, (83), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:25:40,160 INFO L276 IsEmpty]: Start isEmpty. Operand 221 states and 320 transitions. [2022-02-24 02:25:40,161 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2022-02-24 02:25:40,161 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 02:25:40,161 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 02:25:40,161 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2022-02-24 02:25:40,161 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 02:25:40,161 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 02:25:40,161 INFO L85 PathProgramCache]: Analyzing trace with hash -1895305272, now seen corresponding path program 1 times [2022-02-24 02:25:40,161 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 02:25:40,162 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1352545029] [2022-02-24 02:25:40,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 02:25:40,162 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 02:25:40,254 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 20 HavocedVariables, 0 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={1=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-24 02:25:40,255 INFO L275 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-02-24 02:25:40,316 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 18 HavocedVariables, 0 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={1=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-24 02:25:40,317 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-24 02:25:40,317 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-02-24 02:25:40,318 INFO L275 tedInterpolationCore]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2022-02-24 02:25:40,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:25:40,486 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 02:25:40,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:25:40,490 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 02:25:54,040 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 02:25:54,041 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1352545029] [2022-02-24 02:25:54,041 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1352545029] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 02:25:54,041 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 02:25:54,041 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2022-02-24 02:25:54,041 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1985113345] [2022-02-24 02:25:54,041 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 02:25:54,041 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-02-24 02:25:54,041 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 02:25:54,042 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-02-24 02:25:54,042 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=96, Invalid=492, Unknown=12, NotChecked=0, Total=600 [2022-02-24 02:25:54,042 INFO L87 Difference]: Start difference. First operand 221 states and 320 transitions. Second operand has 25 states, 25 states have (on average 3.28) internal successors, (82), 24 states have internal predecessors, (82), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:25:56,056 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 02:25:56,871 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 02:25:56,871 INFO L93 Difference]: Finished difference Result 393 states and 582 transitions. [2022-02-24 02:25:56,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-02-24 02:25:56,872 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.28) internal successors, (82), 24 states have internal predecessors, (82), 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 87 [2022-02-24 02:25:56,872 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 02:25:56,873 INFO L225 Difference]: With dead ends: 393 [2022-02-24 02:25:56,873 INFO L226 Difference]: Without dead ends: 222 [2022-02-24 02:25:56,873 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 21 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 152 ImplicationChecksByTransitivity, 13.5s TimeCoverageRelationStatistics Valid=96, Invalid=492, Unknown=12, NotChecked=0, Total=600 [2022-02-24 02:25:56,874 INFO L933 BasicCegarLoop]: 182 mSDtfsCounter, 7 mSDsluCounter, 937 mSDsCounter, 0 mSdLazyCounter, 539 mSolverCounterSat, 13 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 1119 SdHoareTripleChecker+Invalid, 995 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 539 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 442 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2022-02-24 02:25:56,874 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7 Valid, 1119 Invalid, 995 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 539 Invalid, 1 Unknown, 442 Unchecked, 2.8s Time] [2022-02-24 02:25:56,874 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 222 states. [2022-02-24 02:25:56,900 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 222 to 221. [2022-02-24 02:25:56,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 221 states, 216 states have (on average 1.4583333333333333) internal successors, (315), 216 states have internal predecessors, (315), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:25:56,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 221 states to 221 states and 319 transitions. [2022-02-24 02:25:56,902 INFO L78 Accepts]: Start accepts. Automaton has 221 states and 319 transitions. Word has length 87 [2022-02-24 02:25:56,902 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 02:25:56,902 INFO L470 AbstractCegarLoop]: Abstraction has 221 states and 319 transitions. [2022-02-24 02:25:56,902 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 3.28) internal successors, (82), 24 states have internal predecessors, (82), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:25:56,902 INFO L276 IsEmpty]: Start isEmpty. Operand 221 states and 319 transitions. [2022-02-24 02:25:56,903 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2022-02-24 02:25:56,903 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 02:25:56,903 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 02:25:56,903 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2022-02-24 02:25:56,903 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 02:25:56,903 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 02:25:56,904 INFO L85 PathProgramCache]: Analyzing trace with hash -1747399131, now seen corresponding path program 1 times [2022-02-24 02:25:56,904 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 02:25:56,904 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [661683018] [2022-02-24 02:25:56,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 02:25:56,904 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 02:25:56,976 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 20 HavocedVariables, 0 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={1=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-24 02:25:56,977 INFO L275 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-02-24 02:25:56,977 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-24 02:25:56,977 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-02-24 02:25:57,043 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 19 HavocedVariables, 0 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={1=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-24 02:25:57,043 INFO L275 tedInterpolationCore]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2022-02-24 02:25:57,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:25:57,174 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 02:25:57,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:25:57,178 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 02:27:49,036 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 02:27:49,037 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [661683018] [2022-02-24 02:27:49,037 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [661683018] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 02:27:49,037 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 02:27:49,037 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [27] imperfect sequences [] total 27 [2022-02-24 02:27:49,037 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [327296796] [2022-02-24 02:27:49,037 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 02:27:49,037 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-02-24 02:27:49,038 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 02:27:49,038 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-02-24 02:27:49,038 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=571, Unknown=42, NotChecked=0, Total=702 [2022-02-24 02:27:49,038 INFO L87 Difference]: Start difference. First operand 221 states and 319 transitions. Second operand has 27 states, 27 states have (on average 3.074074074074074) internal successors, (83), 26 states have internal predecessors, (83), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:27:51,052 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 02:27:51,610 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 02:27:51,610 INFO L93 Difference]: Finished difference Result 427 states and 627 transitions. [2022-02-24 02:27:51,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-02-24 02:27:51,611 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 3.074074074074074) internal successors, (83), 26 states have internal predecessors, (83), 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 87 [2022-02-24 02:27:51,611 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 02:27:51,612 INFO L225 Difference]: With dead ends: 427 [2022-02-24 02:27:51,612 INFO L226 Difference]: Without dead ends: 256 [2022-02-24 02:27:51,612 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 17 SyntacticMatches, 1 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 73 ImplicationChecksByTransitivity, 107.5s TimeCoverageRelationStatistics Valid=95, Invalid=619, Unknown=42, NotChecked=0, Total=756 [2022-02-24 02:27:51,613 INFO L933 BasicCegarLoop]: 209 mSDtfsCounter, 47 mSDsluCounter, 1198 mSDsCounter, 0 mSdLazyCounter, 230 mSolverCounterSat, 4 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 1407 SdHoareTripleChecker+Invalid, 2270 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 230 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 2035 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2022-02-24 02:27:51,613 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [47 Valid, 1407 Invalid, 2270 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 230 Invalid, 1 Unknown, 2035 Unchecked, 2.5s Time] [2022-02-24 02:27:51,613 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 256 states. [2022-02-24 02:27:51,640 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 256 to 227. [2022-02-24 02:27:51,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 227 states, 222 states have (on average 1.445945945945946) internal successors, (321), 222 states have internal predecessors, (321), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:27:51,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 227 states to 227 states and 325 transitions. [2022-02-24 02:27:51,641 INFO L78 Accepts]: Start accepts. Automaton has 227 states and 325 transitions. Word has length 87 [2022-02-24 02:27:51,641 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 02:27:51,641 INFO L470 AbstractCegarLoop]: Abstraction has 227 states and 325 transitions. [2022-02-24 02:27:51,641 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 3.074074074074074) internal successors, (83), 26 states have internal predecessors, (83), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:27:51,641 INFO L276 IsEmpty]: Start isEmpty. Operand 227 states and 325 transitions. [2022-02-24 02:27:51,641 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2022-02-24 02:27:51,641 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 02:27:51,642 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 02:27:51,642 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2022-02-24 02:27:51,642 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 02:27:51,642 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 02:27:51,642 INFO L85 PathProgramCache]: Analyzing trace with hash -487224408, now seen corresponding path program 1 times [2022-02-24 02:27:51,642 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 02:27:51,642 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1668420253] [2022-02-24 02:27:51,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 02:27:51,643 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 02:27:51,735 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 24 HavocedVariables, 0 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={1=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-24 02:27:51,735 INFO L275 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-02-24 02:27:51,785 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 18 HavocedVariables, 0 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={1=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-24 02:27:51,786 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-24 02:27:51,786 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-02-24 02:27:51,786 INFO L275 tedInterpolationCore]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2022-02-24 02:27:51,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:27:51,947 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 02:27:51,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:27:51,953 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 02:28:28,789 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 02:28:28,790 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1668420253] [2022-02-24 02:28:28,790 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1668420253] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 02:28:28,790 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 02:28:28,790 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [28] imperfect sequences [] total 28 [2022-02-24 02:28:28,790 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1542619293] [2022-02-24 02:28:28,790 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 02:28:28,790 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-02-24 02:28:28,790 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 02:28:28,791 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-02-24 02:28:28,791 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=622, Unknown=29, NotChecked=0, Total=756 [2022-02-24 02:28:28,791 INFO L87 Difference]: Start difference. First operand 227 states and 325 transitions. Second operand has 28 states, 28 states have (on average 3.0) internal successors, (84), 27 states have internal predecessors, (84), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:28:30,804 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 02:28:31,568 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 02:28:31,569 INFO L93 Difference]: Finished difference Result 463 states and 669 transitions. [2022-02-24 02:28:31,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-02-24 02:28:31,569 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 3.0) internal successors, (84), 27 states have internal predecessors, (84), 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 88 [2022-02-24 02:28:31,569 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 02:28:31,570 INFO L225 Difference]: With dead ends: 463 [2022-02-24 02:28:31,570 INFO L226 Difference]: Without dead ends: 292 [2022-02-24 02:28:31,571 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 17 SyntacticMatches, 1 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 170 ImplicationChecksByTransitivity, 36.7s TimeCoverageRelationStatistics Valid=105, Invalid=622, Unknown=29, NotChecked=0, Total=756 [2022-02-24 02:28:31,571 INFO L933 BasicCegarLoop]: 212 mSDtfsCounter, 51 mSDsluCounter, 733 mSDsCounter, 0 mSdLazyCounter, 486 mSolverCounterSat, 6 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 945 SdHoareTripleChecker+Invalid, 1233 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 486 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 740 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2022-02-24 02:28:31,571 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [51 Valid, 945 Invalid, 1233 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 486 Invalid, 1 Unknown, 740 Unchecked, 2.7s Time] [2022-02-24 02:28:31,572 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 292 states. [2022-02-24 02:28:31,610 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 292 to 252. [2022-02-24 02:28:31,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 252 states, 247 states have (on average 1.4210526315789473) internal successors, (351), 247 states have internal predecessors, (351), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:28:31,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 252 states to 252 states and 355 transitions. [2022-02-24 02:28:31,611 INFO L78 Accepts]: Start accepts. Automaton has 252 states and 355 transitions. Word has length 88 [2022-02-24 02:28:31,612 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 02:28:31,612 INFO L470 AbstractCegarLoop]: Abstraction has 252 states and 355 transitions. [2022-02-24 02:28:31,612 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 3.0) internal successors, (84), 27 states have internal predecessors, (84), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:28:31,612 INFO L276 IsEmpty]: Start isEmpty. Operand 252 states and 355 transitions. [2022-02-24 02:28:31,612 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2022-02-24 02:28:31,612 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 02:28:31,612 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 02:28:31,613 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2022-02-24 02:28:31,613 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 02:28:31,613 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 02:28:31,613 INFO L85 PathProgramCache]: Analyzing trace with hash 388794598, now seen corresponding path program 1 times [2022-02-24 02:28:31,613 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 02:28:31,613 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1068320634] [2022-02-24 02:28:31,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 02:28:31,614 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 02:28:31,705 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 22 HavocedVariables, 0 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={1=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-24 02:28:31,706 INFO L275 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-02-24 02:28:31,763 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 18 HavocedVariables, 0 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={1=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-24 02:28:31,764 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-24 02:28:31,764 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-02-24 02:28:31,765 INFO L275 tedInterpolationCore]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2022-02-24 02:28:31,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:28:31,895 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 02:28:31,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:28:31,901 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 02:28:47,635 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 02:28:47,635 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1068320634] [2022-02-24 02:28:47,635 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1068320634] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 02:28:47,635 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 02:28:47,635 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2022-02-24 02:28:47,635 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1845978217] [2022-02-24 02:28:47,635 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 02:28:47,636 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-02-24 02:28:47,636 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 02:28:47,636 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-02-24 02:28:47,636 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=489, Unknown=19, NotChecked=0, Total=600 [2022-02-24 02:28:47,636 INFO L87 Difference]: Start difference. First operand 252 states and 355 transitions. Second operand has 25 states, 25 states have (on average 3.32) internal successors, (83), 24 states have internal predecessors, (83), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:28:49,648 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 02:28:50,508 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 02:28:50,508 INFO L93 Difference]: Finished difference Result 460 states and 666 transitions. [2022-02-24 02:28:50,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2022-02-24 02:28:50,508 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.32) internal successors, (83), 24 states have internal predecessors, (83), 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 88 [2022-02-24 02:28:50,509 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 02:28:50,510 INFO L225 Difference]: With dead ends: 460 [2022-02-24 02:28:50,510 INFO L226 Difference]: Without dead ends: 289 [2022-02-24 02:28:50,510 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 20 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 131 ImplicationChecksByTransitivity, 15.6s TimeCoverageRelationStatistics Valid=92, Invalid=489, Unknown=19, NotChecked=0, Total=600 [2022-02-24 02:28:50,511 INFO L933 BasicCegarLoop]: 198 mSDtfsCounter, 41 mSDsluCounter, 1095 mSDsCounter, 0 mSdLazyCounter, 612 mSolverCounterSat, 15 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 1293 SdHoareTripleChecker+Invalid, 1651 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 612 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 1023 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2022-02-24 02:28:50,511 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [41 Valid, 1293 Invalid, 1651 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 612 Invalid, 1 Unknown, 1023 Unchecked, 2.8s Time] [2022-02-24 02:28:50,511 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 289 states. [2022-02-24 02:28:50,550 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 289 to 252. [2022-02-24 02:28:50,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 252 states, 247 states have (on average 1.417004048582996) internal successors, (350), 247 states have internal predecessors, (350), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:28:50,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 252 states to 252 states and 354 transitions. [2022-02-24 02:28:50,551 INFO L78 Accepts]: Start accepts. Automaton has 252 states and 354 transitions. Word has length 88 [2022-02-24 02:28:50,551 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 02:28:50,551 INFO L470 AbstractCegarLoop]: Abstraction has 252 states and 354 transitions. [2022-02-24 02:28:50,551 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 3.32) internal successors, (83), 24 states have internal predecessors, (83), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:28:50,551 INFO L276 IsEmpty]: Start isEmpty. Operand 252 states and 354 transitions. [2022-02-24 02:28:50,552 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2022-02-24 02:28:50,552 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 02:28:50,552 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 02:28:50,552 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2022-02-24 02:28:50,552 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 02:28:50,552 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 02:28:50,553 INFO L85 PathProgramCache]: Analyzing trace with hash 536700739, now seen corresponding path program 1 times [2022-02-24 02:28:50,553 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 02:28:50,553 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [340090412] [2022-02-24 02:28:50,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 02:28:50,553 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 02:28:50,612 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 22 HavocedVariables, 0 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={1=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-24 02:28:50,612 INFO L275 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-02-24 02:28:50,613 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-24 02:28:50,613 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-02-24 02:28:50,665 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 19 HavocedVariables, 0 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={1=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-24 02:28:50,665 INFO L275 tedInterpolationCore]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2022-02-24 02:28:50,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:28:50,827 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 02:28:50,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:28:50,831 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 02:30:33,724 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 02:30:33,725 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [340090412] [2022-02-24 02:30:33,725 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [340090412] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 02:30:33,725 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 02:30:33,725 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [28] imperfect sequences [] total 28 [2022-02-24 02:30:33,725 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1780917607] [2022-02-24 02:30:33,725 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 02:30:33,725 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-02-24 02:30:33,725 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 02:30:33,726 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-02-24 02:30:33,726 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=94, Invalid=624, Unknown=38, NotChecked=0, Total=756 [2022-02-24 02:30:33,726 INFO L87 Difference]: Start difference. First operand 252 states and 354 transitions. Second operand has 28 states, 28 states have (on average 3.0) internal successors, (84), 27 states have internal predecessors, (84), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:30:35,743 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 02:30:40,478 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 02:30:40,478 INFO L93 Difference]: Finished difference Result 459 states and 663 transitions. [2022-02-24 02:30:40,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-02-24 02:30:40,479 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 3.0) internal successors, (84), 27 states have internal predecessors, (84), 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 88 [2022-02-24 02:30:40,479 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 02:30:40,480 INFO L225 Difference]: With dead ends: 459 [2022-02-24 02:30:40,480 INFO L226 Difference]: Without dead ends: 288 [2022-02-24 02:30:40,480 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 17 SyntacticMatches, 1 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 80 ImplicationChecksByTransitivity, 102.7s TimeCoverageRelationStatistics Valid=100, Invalid=672, Unknown=40, NotChecked=0, Total=812 [2022-02-24 02:30:40,481 INFO L933 BasicCegarLoop]: 212 mSDtfsCounter, 66 mSDsluCounter, 669 mSDsCounter, 0 mSdLazyCounter, 229 mSolverCounterSat, 4 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 66 SdHoareTripleChecker+Valid, 881 SdHoareTripleChecker+Invalid, 1159 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 229 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 925 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2022-02-24 02:30:40,481 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [66 Valid, 881 Invalid, 1159 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 229 Invalid, 1 Unknown, 925 Unchecked, 2.4s Time] [2022-02-24 02:30:40,481 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 288 states. [2022-02-24 02:30:40,523 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 288 to 251. [2022-02-24 02:30:40,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 251 states, 246 states have (on average 1.4146341463414633) internal successors, (348), 246 states have internal predecessors, (348), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:30:40,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 251 states to 251 states and 352 transitions. [2022-02-24 02:30:40,524 INFO L78 Accepts]: Start accepts. Automaton has 251 states and 352 transitions. Word has length 88 [2022-02-24 02:30:40,524 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 02:30:40,525 INFO L470 AbstractCegarLoop]: Abstraction has 251 states and 352 transitions. [2022-02-24 02:30:40,525 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 3.0) internal successors, (84), 27 states have internal predecessors, (84), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:30:40,525 INFO L276 IsEmpty]: Start isEmpty. Operand 251 states and 352 transitions. [2022-02-24 02:30:40,525 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2022-02-24 02:30:40,525 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 02:30:40,525 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 02:30:40,525 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2022-02-24 02:30:40,525 INFO L402 AbstractCegarLoop]: === Iteration 35 === Targeting ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 02:30:40,526 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 02:30:40,526 INFO L85 PathProgramCache]: Analyzing trace with hash 1604971839, now seen corresponding path program 1 times [2022-02-24 02:30:40,526 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 02:30:40,526 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [41698570] [2022-02-24 02:30:40,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 02:30:40,526 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 02:30:40,594 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 23 HavocedVariables, 0 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={1=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-24 02:30:40,595 INFO L275 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-02-24 02:30:40,637 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 19 HavocedVariables, 0 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={1=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-24 02:30:40,638 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-24 02:30:40,638 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-02-24 02:30:40,638 INFO L275 tedInterpolationCore]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2022-02-24 02:30:40,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:30:40,800 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 02:30:40,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:30:40,804 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.