/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data --core.log.level.for.class de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationQvasr_64.epf -i ../../../trunk/examples/svcomp/openssl-simplified/s3_srvr_14.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-d966a43 [2022-01-31 23:42:35,815 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-31 23:42:35,817 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-31 23:42:35,860 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-01-31 23:42:35,894 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-31 23:42:35,899 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-31 23:42:35,900 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-31 23:42:35,902 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-31 23:42:35,903 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-31 23:42:35,905 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-31 23:42:35,910 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-31 23:42:35,915 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-31 23:42:35,916 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-31 23:42:35,918 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-31 23:42:35,919 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-31 23:42:35,920 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-31 23:42:35,926 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-01-31 23:42:35,935 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-31 23:42:35,935 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-31 23:42:35,936 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-31 23:42:35,939 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationQvasr_64.epf [2022-01-31 23:42:35,953 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-31 23:42:35,953 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-31 23:42:35,955 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-31 23:42:35,955 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-31 23:42:35,956 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-31 23:42:35,956 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-31 23:42:35,956 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-31 23:42:35,956 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-31 23:42:35,956 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-31 23:42:35,956 INFO L138 SettingsManager]: * Use constant arrays=true [2022-01-31 23:42:35,957 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-31 23:42:35,957 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-31 23:42:35,957 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-31 23:42:35,958 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-01-31 23:42:35,958 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-31 23:42:35,958 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-31 23:42:35,958 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-31 23:42:35,958 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2022-01-31 23:42:35,958 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-31 23:42:35,958 INFO L138 SettingsManager]: * Loop acceleration method that is used by accelerated interpolation=QVASR [2022-01-31 23:42:35,958 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-31 23:42:36,215 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-31 23:42:36,248 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-31 23:42:36,251 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-31 23:42:36,254 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-31 23:42:36,255 INFO L275 PluginConnector]: CDTParser initialized [2022-01-31 23:42:36,256 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/openssl-simplified/s3_srvr_14.cil.c [2022-01-31 23:42:36,319 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/63587ce8b/c052c5e097924d1b8579228a67b98953/FLAG4446cec6a [2022-01-31 23:42:36,800 INFO L306 CDTParser]: Found 1 translation units. [2022-01-31 23:42:36,800 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/openssl-simplified/s3_srvr_14.cil.c [2022-01-31 23:42:36,822 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/63587ce8b/c052c5e097924d1b8579228a67b98953/FLAG4446cec6a [2022-01-31 23:42:37,305 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/63587ce8b/c052c5e097924d1b8579228a67b98953 [2022-01-31 23:42:37,308 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-31 23:42:37,310 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2022-01-31 23:42:37,313 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-31 23:42:37,313 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-31 23:42:37,317 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-31 23:42:37,318 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.01 11:42:37" (1/1) ... [2022-01-31 23:42:37,319 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@704e662b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 11:42:37, skipping insertion in model container [2022-01-31 23:42:37,319 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.01 11:42:37" (1/1) ... [2022-01-31 23:42:37,325 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-31 23:42:37,362 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-31 23:42:37,635 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/openssl-simplified/s3_srvr_14.cil.c[45163,45176] [2022-01-31 23:42:37,641 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-31 23:42:37,647 INFO L203 MainTranslator]: Completed pre-run [2022-01-31 23:42:37,688 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/openssl-simplified/s3_srvr_14.cil.c[45163,45176] [2022-01-31 23:42:37,690 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-31 23:42:37,706 INFO L208 MainTranslator]: Completed translation [2022-01-31 23:42:37,706 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 11:42:37 WrapperNode [2022-01-31 23:42:37,706 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-31 23:42:37,707 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-31 23:42:37,707 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-31 23:42:37,707 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-31 23:42:37,718 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 11:42:37" (1/1) ... [2022-01-31 23:42:37,719 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 11:42:37" (1/1) ... [2022-01-31 23:42:37,743 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 11:42:37" (1/1) ... [2022-01-31 23:42:37,743 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 11:42:37" (1/1) ... [2022-01-31 23:42:37,757 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 11:42:37" (1/1) ... [2022-01-31 23:42:37,779 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 11:42:37" (1/1) ... [2022-01-31 23:42:37,781 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 11:42:37" (1/1) ... [2022-01-31 23:42:37,784 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-31 23:42:37,785 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-31 23:42:37,785 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-31 23:42:37,785 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-31 23:42:37,793 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 11:42:37" (1/1) ... [2022-01-31 23:42:37,814 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-31 23:42:37,825 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-31 23:42:37,845 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) [2022-01-31 23:42:37,865 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 [2022-01-31 23:42:37,887 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2022-01-31 23:42:37,888 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-31 23:42:37,888 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2022-01-31 23:42:37,888 INFO L138 BoogieDeclarations]: Found implementation of procedure ssl3_accept [2022-01-31 23:42:37,888 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2022-01-31 23:42:37,888 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2022-01-31 23:42:37,888 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2022-01-31 23:42:37,889 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2022-01-31 23:42:37,889 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-31 23:42:37,890 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2022-01-31 23:42:37,890 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2022-01-31 23:42:37,890 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_long [2022-01-31 23:42:37,890 INFO L130 BoogieDeclarations]: Found specification of procedure ssl3_accept [2022-01-31 23:42:37,890 INFO L130 BoogieDeclarations]: Found specification of procedure main [2022-01-31 23:42:37,891 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2022-01-31 23:42:37,891 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-01-31 23:42:37,891 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-31 23:42:37,892 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-01-31 23:42:37,893 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-01-31 23:42:37,894 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-01-31 23:42:38,014 INFO L234 CfgBuilder]: Building ICFG [2022-01-31 23:42:38,016 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-31 23:42:38,116 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-01-31 23:42:38,460 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##90: assume false; [2022-01-31 23:42:38,461 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##91: assume !false; [2022-01-31 23:42:38,466 INFO L275 CfgBuilder]: Performing block encoding [2022-01-31 23:42:38,481 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-31 23:42:38,481 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-01-31 23:42:38,484 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.01 11:42:38 BoogieIcfgContainer [2022-01-31 23:42:38,484 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-31 23:42:38,486 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-31 23:42:38,486 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-31 23:42:38,490 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-31 23:42:38,490 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.01 11:42:37" (1/3) ... [2022-01-31 23:42:38,490 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7f84485b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.01 11:42:38, skipping insertion in model container [2022-01-31 23:42:38,491 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 11:42:37" (2/3) ... [2022-01-31 23:42:38,491 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7f84485b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.01 11:42:38, skipping insertion in model container [2022-01-31 23:42:38,491 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.01 11:42:38" (3/3) ... [2022-01-31 23:42:38,492 INFO L111 eAbstractionObserver]: Analyzing ICFG s3_srvr_14.cil.c [2022-01-31 23:42:38,497 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2022-01-31 23:42:38,497 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-31 23:42:38,530 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-31 23:42:38,535 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=QVASR [2022-01-31 23:42:38,535 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-01-31 23:42:38,553 INFO L276 IsEmpty]: Start isEmpty. Operand has 160 states, 152 states have (on average 1.730263157894737) internal successors, (263), 153 states have internal predecessors, (263), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-01-31 23:42:38,561 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-01-31 23:42:38,561 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 23:42:38,562 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] [2022-01-31 23:42:38,563 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 23:42:38,570 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 23:42:38,571 INFO L85 PathProgramCache]: Analyzing trace with hash -242326358, now seen corresponding path program 1 times [2022-01-31 23:42:38,578 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 23:42:38,578 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1879761095] [2022-01-31 23:42:38,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 23:42:38,594 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 23:42:38,635 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 23:42:38,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 23:42:38,860 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 23:42:38,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 23:42:38,872 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 23:42:38,875 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 23:42:38,876 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1879761095] [2022-01-31 23:42:38,877 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1879761095] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 23:42:38,877 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 23:42:38,877 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-31 23:42:38,878 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1282878041] [2022-01-31 23:42:38,879 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 23:42:38,882 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-31 23:42:38,883 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 23:42:38,908 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-31 23:42:38,909 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-31 23:42:38,913 INFO L87 Difference]: Start difference. First operand has 160 states, 152 states have (on average 1.730263157894737) internal successors, (263), 153 states have internal predecessors, (263), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 4 states, 4 states have (on average 6.25) internal successors, (25), 3 states have internal predecessors, (25), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 23:42:39,462 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 23:42:39,463 INFO L93 Difference]: Finished difference Result 445 states and 761 transitions. [2022-01-31 23:42:39,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-31 23:42:39,465 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.25) internal successors, (25), 3 states have internal predecessors, (25), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 29 [2022-01-31 23:42:39,466 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 23:42:39,486 INFO L225 Difference]: With dead ends: 445 [2022-01-31 23:42:39,486 INFO L226 Difference]: Without dead ends: 272 [2022-01-31 23:42:39,491 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-31 23:42:39,495 INFO L933 BasicCegarLoop]: 265 mSDtfsCounter, 717 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 262 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 719 SdHoareTripleChecker+Valid, 274 SdHoareTripleChecker+Invalid, 265 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 262 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-31 23:42:39,496 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [719 Valid, 274 Invalid, 265 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 262 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-31 23:42:39,509 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 272 states. [2022-01-31 23:42:39,569 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 272 to 270. [2022-01-31 23:42:39,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 270 states, 265 states have (on average 1.5660377358490567) internal successors, (415), 265 states have internal predecessors, (415), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 23:42:39,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 270 states to 270 states and 419 transitions. [2022-01-31 23:42:39,576 INFO L78 Accepts]: Start accepts. Automaton has 270 states and 419 transitions. Word has length 29 [2022-01-31 23:42:39,576 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 23:42:39,576 INFO L470 AbstractCegarLoop]: Abstraction has 270 states and 419 transitions. [2022-01-31 23:42:39,576 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.25) internal successors, (25), 3 states have internal predecessors, (25), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 23:42:39,577 INFO L276 IsEmpty]: Start isEmpty. Operand 270 states and 419 transitions. [2022-01-31 23:42:39,578 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-01-31 23:42:39,578 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 23:42:39,578 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] [2022-01-31 23:42:39,578 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-31 23:42:39,578 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 23:42:39,578 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 23:42:39,579 INFO L85 PathProgramCache]: Analyzing trace with hash -1753118860, now seen corresponding path program 1 times [2022-01-31 23:42:39,579 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 23:42:39,579 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1108084930] [2022-01-31 23:42:39,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 23:42:39,580 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 23:42:39,581 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 23:42:39,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 23:42:39,647 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 23:42:39,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 23:42:39,653 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 23:42:39,653 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 23:42:39,654 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1108084930] [2022-01-31 23:42:39,654 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1108084930] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 23:42:39,654 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 23:42:39,654 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-31 23:42:39,654 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1513429523] [2022-01-31 23:42:39,654 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 23:42:39,655 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-31 23:42:39,655 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 23:42:39,656 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-31 23:42:39,656 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-31 23:42:39,656 INFO L87 Difference]: Start difference. First operand 270 states and 419 transitions. Second operand has 5 states, 5 states have (on average 5.2) internal successors, (26), 4 states have internal predecessors, (26), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 23:42:40,114 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 23:42:40,115 INFO L93 Difference]: Finished difference Result 350 states and 531 transitions. [2022-01-31 23:42:40,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-31 23:42:40,116 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.2) internal successors, (26), 4 states have internal predecessors, (26), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 30 [2022-01-31 23:42:40,116 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 23:42:40,118 INFO L225 Difference]: With dead ends: 350 [2022-01-31 23:42:40,119 INFO L226 Difference]: Without dead ends: 348 [2022-01-31 23:42:40,122 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-01-31 23:42:40,124 INFO L933 BasicCegarLoop]: 179 mSDtfsCounter, 439 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 352 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 439 SdHoareTripleChecker+Valid, 191 SdHoareTripleChecker+Invalid, 368 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 352 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-31 23:42:40,125 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [439 Valid, 191 Invalid, 368 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 352 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-31 23:42:40,128 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 348 states. [2022-01-31 23:42:40,171 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 348 to 288. [2022-01-31 23:42:40,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 288 states, 283 states have (on average 1.558303886925795) internal successors, (441), 283 states have internal predecessors, (441), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 23:42:40,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 288 states to 288 states and 445 transitions. [2022-01-31 23:42:40,173 INFO L78 Accepts]: Start accepts. Automaton has 288 states and 445 transitions. Word has length 30 [2022-01-31 23:42:40,174 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 23:42:40,174 INFO L470 AbstractCegarLoop]: Abstraction has 288 states and 445 transitions. [2022-01-31 23:42:40,175 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.2) internal successors, (26), 4 states have internal predecessors, (26), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 23:42:40,175 INFO L276 IsEmpty]: Start isEmpty. Operand 288 states and 445 transitions. [2022-01-31 23:42:40,180 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2022-01-31 23:42:40,181 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 23:42:40,181 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] [2022-01-31 23:42:40,181 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-31 23:42:40,182 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 23:42:40,183 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 23:42:40,185 INFO L85 PathProgramCache]: Analyzing trace with hash 119204085, now seen corresponding path program 1 times [2022-01-31 23:42:40,186 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 23:42:40,189 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1084005291] [2022-01-31 23:42:40,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 23:42:40,190 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 23:42:40,191 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 23:42:40,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 23:42:40,284 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 23:42:40,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 23:42:40,292 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 23:42:40,292 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 23:42:40,293 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1084005291] [2022-01-31 23:42:40,293 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1084005291] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 23:42:40,293 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 23:42:40,293 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-31 23:42:40,294 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1930120227] [2022-01-31 23:42:40,294 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 23:42:40,294 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-31 23:42:40,295 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 23:42:40,295 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-31 23:42:40,295 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-31 23:42:40,296 INFO L87 Difference]: Start difference. First operand 288 states and 445 transitions. Second operand has 5 states, 5 states have (on average 5.4) internal successors, (27), 4 states have internal predecessors, (27), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 23:42:40,654 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 23:42:40,655 INFO L93 Difference]: Finished difference Result 337 states and 514 transitions. [2022-01-31 23:42:40,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-31 23:42:40,655 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.4) internal successors, (27), 4 states have internal predecessors, (27), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 31 [2022-01-31 23:42:40,656 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 23:42:40,657 INFO L225 Difference]: With dead ends: 337 [2022-01-31 23:42:40,658 INFO L226 Difference]: Without dead ends: 335 [2022-01-31 23:42:40,658 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-31 23:42:40,664 INFO L933 BasicCegarLoop]: 169 mSDtfsCounter, 431 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 354 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 431 SdHoareTripleChecker+Valid, 181 SdHoareTripleChecker+Invalid, 367 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 354 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-31 23:42:40,665 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [431 Valid, 181 Invalid, 367 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 354 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-31 23:42:40,667 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 335 states. [2022-01-31 23:42:40,720 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 335 to 278. [2022-01-31 23:42:40,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 278 states, 273 states have (on average 1.5677655677655677) internal successors, (428), 273 states have internal predecessors, (428), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 23:42:40,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 278 states to 278 states and 432 transitions. [2022-01-31 23:42:40,722 INFO L78 Accepts]: Start accepts. Automaton has 278 states and 432 transitions. Word has length 31 [2022-01-31 23:42:40,723 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 23:42:40,723 INFO L470 AbstractCegarLoop]: Abstraction has 278 states and 432 transitions. [2022-01-31 23:42:40,723 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.4) internal successors, (27), 4 states have internal predecessors, (27), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 23:42:40,723 INFO L276 IsEmpty]: Start isEmpty. Operand 278 states and 432 transitions. [2022-01-31 23:42:40,724 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2022-01-31 23:42:40,724 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 23:42:40,724 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] [2022-01-31 23:42:40,724 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-01-31 23:42:40,724 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 23:42:40,725 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 23:42:40,725 INFO L85 PathProgramCache]: Analyzing trace with hash -103055551, now seen corresponding path program 1 times [2022-01-31 23:42:40,725 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 23:42:40,725 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [836569085] [2022-01-31 23:42:40,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 23:42:40,726 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 23:42:40,727 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 23:42:40,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 23:42:40,777 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 23:42:40,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 23:42:40,782 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 23:42:40,782 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 23:42:40,782 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [836569085] [2022-01-31 23:42:40,783 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [836569085] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 23:42:40,783 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 23:42:40,783 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-31 23:42:40,783 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [488010475] [2022-01-31 23:42:40,783 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 23:42:40,783 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-31 23:42:40,783 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 23:42:40,784 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-31 23:42:40,784 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-31 23:42:40,784 INFO L87 Difference]: Start difference. First operand 278 states and 432 transitions. Second operand has 5 states, 5 states have (on average 5.4) internal successors, (27), 4 states have internal predecessors, (27), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 23:42:41,114 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 23:42:41,114 INFO L93 Difference]: Finished difference Result 360 states and 550 transitions. [2022-01-31 23:42:41,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-31 23:42:41,114 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.4) internal successors, (27), 4 states have internal predecessors, (27), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 31 [2022-01-31 23:42:41,115 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 23:42:41,116 INFO L225 Difference]: With dead ends: 360 [2022-01-31 23:42:41,117 INFO L226 Difference]: Without dead ends: 358 [2022-01-31 23:42:41,117 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-01-31 23:42:41,118 INFO L933 BasicCegarLoop]: 179 mSDtfsCounter, 436 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 348 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 436 SdHoareTripleChecker+Valid, 191 SdHoareTripleChecker+Invalid, 365 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 348 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-31 23:42:41,118 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [436 Valid, 191 Invalid, 365 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 348 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-31 23:42:41,119 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 358 states. [2022-01-31 23:42:41,146 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 358 to 276. [2022-01-31 23:42:41,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 276 states, 271 states have (on average 1.5719557195571956) internal successors, (426), 271 states have internal predecessors, (426), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 23:42:41,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 276 states to 276 states and 430 transitions. [2022-01-31 23:42:41,148 INFO L78 Accepts]: Start accepts. Automaton has 276 states and 430 transitions. Word has length 31 [2022-01-31 23:42:41,148 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 23:42:41,148 INFO L470 AbstractCegarLoop]: Abstraction has 276 states and 430 transitions. [2022-01-31 23:42:41,148 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.4) internal successors, (27), 4 states have internal predecessors, (27), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 23:42:41,149 INFO L276 IsEmpty]: Start isEmpty. Operand 276 states and 430 transitions. [2022-01-31 23:42:41,149 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2022-01-31 23:42:41,149 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 23:42:41,150 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] [2022-01-31 23:42:41,150 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-01-31 23:42:41,150 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 23:42:41,150 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 23:42:41,150 INFO L85 PathProgramCache]: Analyzing trace with hash -1303486160, now seen corresponding path program 1 times [2022-01-31 23:42:41,151 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 23:42:41,151 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1370014165] [2022-01-31 23:42:41,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 23:42:41,151 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 23:42:41,152 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 23:42:41,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 23:42:41,192 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 23:42:41,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 23:42:41,197 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 23:42:41,197 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 23:42:41,197 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1370014165] [2022-01-31 23:42:41,197 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1370014165] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 23:42:41,197 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 23:42:41,197 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-31 23:42:41,198 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [309719245] [2022-01-31 23:42:41,198 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 23:42:41,198 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-31 23:42:41,198 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 23:42:41,198 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-31 23:42:41,199 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-31 23:42:41,199 INFO L87 Difference]: Start difference. First operand 276 states and 430 transitions. Second operand has 4 states, 4 states have (on average 8.75) internal successors, (35), 3 states have internal predecessors, (35), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 23:42:41,484 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 23:42:41,484 INFO L93 Difference]: Finished difference Result 796 states and 1250 transitions. [2022-01-31 23:42:41,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-31 23:42:41,484 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.75) internal successors, (35), 3 states have internal predecessors, (35), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 39 [2022-01-31 23:42:41,486 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 23:42:41,490 INFO L225 Difference]: With dead ends: 796 [2022-01-31 23:42:41,490 INFO L226 Difference]: Without dead ends: 535 [2022-01-31 23:42:41,494 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-31 23:42:41,495 INFO L933 BasicCegarLoop]: 211 mSDtfsCounter, 588 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 218 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 588 SdHoareTripleChecker+Valid, 218 SdHoareTripleChecker+Invalid, 231 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 218 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-31 23:42:41,496 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [588 Valid, 218 Invalid, 231 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 218 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-31 23:42:41,498 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 535 states. [2022-01-31 23:42:41,569 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 535 to 533. [2022-01-31 23:42:41,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 533 states, 528 states have (on average 1.5378787878787878) internal successors, (812), 528 states have internal predecessors, (812), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 23:42:41,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 533 states to 533 states and 816 transitions. [2022-01-31 23:42:41,575 INFO L78 Accepts]: Start accepts. Automaton has 533 states and 816 transitions. Word has length 39 [2022-01-31 23:42:41,575 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 23:42:41,576 INFO L470 AbstractCegarLoop]: Abstraction has 533 states and 816 transitions. [2022-01-31 23:42:41,576 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.75) internal successors, (35), 3 states have internal predecessors, (35), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 23:42:41,576 INFO L276 IsEmpty]: Start isEmpty. Operand 533 states and 816 transitions. [2022-01-31 23:42:41,577 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2022-01-31 23:42:41,577 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 23:42:41,577 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] [2022-01-31 23:42:41,577 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-01-31 23:42:41,577 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 23:42:41,578 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 23:42:41,578 INFO L85 PathProgramCache]: Analyzing trace with hash -602421582, now seen corresponding path program 1 times [2022-01-31 23:42:41,578 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 23:42:41,578 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1480551135] [2022-01-31 23:42:41,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 23:42:41,579 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 23:42:41,580 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 23:42:41,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 23:42:41,633 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 23:42:41,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 23:42:41,640 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 23:42:41,640 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 23:42:41,640 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1480551135] [2022-01-31 23:42:41,641 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1480551135] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 23:42:41,641 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 23:42:41,641 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-31 23:42:41,641 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1513121501] [2022-01-31 23:42:41,641 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 23:42:41,641 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-31 23:42:41,641 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 23:42:41,642 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-31 23:42:41,642 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-31 23:42:41,642 INFO L87 Difference]: Start difference. First operand 533 states and 816 transitions. Second operand has 4 states, 4 states have (on average 8.75) internal successors, (35), 3 states have internal predecessors, (35), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 23:42:41,975 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 23:42:41,975 INFO L93 Difference]: Finished difference Result 1249 states and 1965 transitions. [2022-01-31 23:42:41,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-31 23:42:41,976 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.75) internal successors, (35), 3 states have internal predecessors, (35), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 39 [2022-01-31 23:42:41,976 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 23:42:41,979 INFO L225 Difference]: With dead ends: 1249 [2022-01-31 23:42:41,979 INFO L226 Difference]: Without dead ends: 731 [2022-01-31 23:42:41,981 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-31 23:42:41,982 INFO L933 BasicCegarLoop]: 236 mSDtfsCounter, 277 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 249 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 277 SdHoareTripleChecker+Valid, 243 SdHoareTripleChecker+Invalid, 286 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 249 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-31 23:42:41,986 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [277 Valid, 243 Invalid, 286 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 249 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-31 23:42:41,988 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 731 states. [2022-01-31 23:42:42,060 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 731 to 707. [2022-01-31 23:42:42,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 707 states, 702 states have (on average 1.435897435897436) internal successors, (1008), 702 states have internal predecessors, (1008), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 23:42:42,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 707 states to 707 states and 1012 transitions. [2022-01-31 23:42:42,065 INFO L78 Accepts]: Start accepts. Automaton has 707 states and 1012 transitions. Word has length 39 [2022-01-31 23:42:42,066 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 23:42:42,066 INFO L470 AbstractCegarLoop]: Abstraction has 707 states and 1012 transitions. [2022-01-31 23:42:42,066 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.75) internal successors, (35), 3 states have internal predecessors, (35), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 23:42:42,066 INFO L276 IsEmpty]: Start isEmpty. Operand 707 states and 1012 transitions. [2022-01-31 23:42:42,067 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2022-01-31 23:42:42,067 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 23:42:42,067 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] [2022-01-31 23:42:42,068 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-01-31 23:42:42,068 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 23:42:42,068 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 23:42:42,068 INFO L85 PathProgramCache]: Analyzing trace with hash 77636788, now seen corresponding path program 1 times [2022-01-31 23:42:42,068 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 23:42:42,068 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1143698428] [2022-01-31 23:42:42,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 23:42:42,069 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 23:42:42,070 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 23:42:42,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 23:42:42,126 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 23:42:42,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 23:42:42,134 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 23:42:42,134 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 23:42:42,134 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1143698428] [2022-01-31 23:42:42,134 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1143698428] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 23:42:42,134 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 23:42:42,134 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-31 23:42:42,135 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1971384257] [2022-01-31 23:42:42,135 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 23:42:42,135 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-31 23:42:42,135 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 23:42:42,136 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-31 23:42:42,136 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-01-31 23:42:42,136 INFO L87 Difference]: Start difference. First operand 707 states and 1012 transitions. Second operand has 6 states, 5 states have (on average 7.0) internal successors, (35), 4 states have internal predecessors, (35), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 23:42:42,651 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 23:42:42,651 INFO L93 Difference]: Finished difference Result 1645 states and 2434 transitions. [2022-01-31 23:42:42,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-31 23:42:42,651 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 7.0) internal successors, (35), 4 states have internal predecessors, (35), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 39 [2022-01-31 23:42:42,652 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 23:42:42,655 INFO L225 Difference]: With dead ends: 1645 [2022-01-31 23:42:42,656 INFO L226 Difference]: Without dead ends: 905 [2022-01-31 23:42:42,658 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2022-01-31 23:42:42,658 INFO L933 BasicCegarLoop]: 181 mSDtfsCounter, 648 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 452 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 648 SdHoareTripleChecker+Valid, 198 SdHoareTripleChecker+Invalid, 500 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 452 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-31 23:42:42,658 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [648 Valid, 198 Invalid, 500 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 452 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-31 23:42:42,659 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 905 states. [2022-01-31 23:42:42,740 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 905 to 889. [2022-01-31 23:42:42,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 889 states, 884 states have (on average 1.407239819004525) internal successors, (1244), 884 states have internal predecessors, (1244), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 23:42:42,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 889 states to 889 states and 1248 transitions. [2022-01-31 23:42:42,746 INFO L78 Accepts]: Start accepts. Automaton has 889 states and 1248 transitions. Word has length 39 [2022-01-31 23:42:42,746 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 23:42:42,746 INFO L470 AbstractCegarLoop]: Abstraction has 889 states and 1248 transitions. [2022-01-31 23:42:42,746 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 7.0) internal successors, (35), 4 states have internal predecessors, (35), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 23:42:42,746 INFO L276 IsEmpty]: Start isEmpty. Operand 889 states and 1248 transitions. [2022-01-31 23:42:42,748 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2022-01-31 23:42:42,748 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 23:42:42,748 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] [2022-01-31 23:42:42,748 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-01-31 23:42:42,748 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 23:42:42,749 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 23:42:42,749 INFO L85 PathProgramCache]: Analyzing trace with hash 943214065, now seen corresponding path program 1 times [2022-01-31 23:42:42,749 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 23:42:42,749 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [54696764] [2022-01-31 23:42:42,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 23:42:42,794 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.NullPointerException at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.SmtUtils.minus(SmtUtils.java:612) at de.uni_freiburg.informatik.ultimate.icfgtransformer.loopacceleration.qvasr.QvasrAbstractor.simplifyRealSubtraction(QvasrAbstractor.java:793) at de.uni_freiburg.informatik.ultimate.icfgtransformer.loopacceleration.qvasr.QvasrAbstractor.gaussPartialPivot(QvasrAbstractor.java:197) at de.uni_freiburg.informatik.ultimate.icfgtransformer.loopacceleration.qvasr.QvasrAbstractor.gaussianSolve(QvasrAbstractor.java:132) at de.uni_freiburg.informatik.ultimate.icfgtransformer.loopacceleration.qvasr.QvasrAbstractor.computeAbstraction(QvasrAbstractor.java:111) at de.uni_freiburg.informatik.ultimate.icfgtransformer.loopacceleration.qvasr.QvasrSummarizer.summarizeLoop(QvasrSummarizer.java:133) at de.uni_freiburg.informatik.ultimate.icfgtransformer.loopacceleration.qvasr.QvasrLoopSummarization.getQvasrAcceleration(QvasrLoopSummarization.java:79) at de.uni_freiburg.informatik.ultimate.lib.acceleratedinterpolation.loopaccelerator.AcceleratorQvasr.accelerateLoop(AcceleratorQvasr.java:87) at de.uni_freiburg.informatik.ultimate.lib.acceleratedinterpolation.AcceleratedInterpolationCore.acceleratedInterpolationCoreIsCorrect(AcceleratedInterpolationCore.java:210) at de.uni_freiburg.informatik.ultimate.lib.acceleratedinterpolation.AcceleratedInterpolation.(AcceleratedInterpolation.java:185) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModulePreferences.construct(IpTcStrategyModulePreferences.java:145) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:100) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.isCorrect(IpTcStrategyModuleBase.java:56) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.checkFeasibility(AutomatonFreeRefinementEngine.java:211) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:124) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:88) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:76) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:610) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:413) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:330) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopUtils.getCegarLoopResult(CegarLoopUtils.java:56) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:414) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:304) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:264) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:177) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:156) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:123) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2022-01-31 23:42:42,797 INFO L158 Benchmark]: Toolchain (without parser) took 5487.78ms. Allocated memory was 190.8MB in the beginning and 254.8MB in the end (delta: 64.0MB). Free memory was 134.7MB in the beginning and 87.3MB in the end (delta: 47.3MB). Peak memory consumption was 111.9MB. Max. memory is 8.0GB. [2022-01-31 23:42:42,798 INFO L158 Benchmark]: CDTParser took 0.13ms. Allocated memory is still 190.8MB. Free memory is still 151.6MB. There was no memory consumed. Max. memory is 8.0GB. [2022-01-31 23:42:42,798 INFO L158 Benchmark]: CACSL2BoogieTranslator took 393.89ms. Allocated memory was 190.8MB in the beginning and 254.8MB in the end (delta: 64.0MB). Free memory was 134.5MB in the beginning and 221.3MB in the end (delta: -86.8MB). Peak memory consumption was 16.9MB. Max. memory is 8.0GB. [2022-01-31 23:42:42,798 INFO L158 Benchmark]: Boogie Preprocessor took 77.18ms. Allocated memory is still 254.8MB. Free memory was 221.3MB in the beginning and 218.8MB in the end (delta: 2.5MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-01-31 23:42:42,798 INFO L158 Benchmark]: RCFGBuilder took 699.55ms. Allocated memory is still 254.8MB. Free memory was 218.8MB in the beginning and 190.2MB in the end (delta: 28.6MB). Peak memory consumption was 28.3MB. Max. memory is 8.0GB. [2022-01-31 23:42:42,798 INFO L158 Benchmark]: TraceAbstraction took 4310.77ms. Allocated memory is still 254.8MB. Free memory was 189.8MB in the beginning and 87.3MB in the end (delta: 102.5MB). Peak memory consumption was 102.3MB. Max. memory is 8.0GB. [2022-01-31 23:42:42,800 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13ms. Allocated memory is still 190.8MB. Free memory is still 151.6MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 393.89ms. Allocated memory was 190.8MB in the beginning and 254.8MB in the end (delta: 64.0MB). Free memory was 134.5MB in the beginning and 221.3MB in the end (delta: -86.8MB). Peak memory consumption was 16.9MB. Max. memory is 8.0GB. * Boogie Preprocessor took 77.18ms. Allocated memory is still 254.8MB. Free memory was 221.3MB in the beginning and 218.8MB in the end (delta: 2.5MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 699.55ms. Allocated memory is still 254.8MB. Free memory was 218.8MB in the beginning and 190.2MB in the end (delta: 28.6MB). Peak memory consumption was 28.3MB. Max. memory is 8.0GB. * TraceAbstraction took 4310.77ms. Allocated memory is still 254.8MB. Free memory was 189.8MB in the beginning and 87.3MB in the end (delta: 102.5MB). Peak memory consumption was 102.3MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: NullPointerException: null de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: NullPointerException: null: de.uni_freiburg.informatik.ultimate.lib.smtlibutils.SmtUtils.minus(SmtUtils.java:612) RESULT: Ultimate could not prove your program: Toolchain returned no result. [2022-01-31 23:42:42,835 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request...