/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf -i ../../../trunk/examples/svcomp/ssh-simplified/s3_clnt_3.cil-2.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-72570d3 [2020-08-22 18:59:15,892 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-22 18:59:15,895 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-22 18:59:15,919 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2020-08-22 18:59:15,930 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-22 18:59:15,931 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-22 18:59:15,932 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-22 18:59:15,934 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-22 18:59:15,934 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-22 18:59:15,936 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-22 18:59:15,937 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-22 18:59:15,939 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-22 18:59:15,941 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-22 18:59:15,942 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-22 18:59:15,943 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-22 18:59:15,944 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-22 18:59:15,949 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-08-22 18:59:15,977 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2020-08-22 18:59:15,994 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-22 18:59:15,995 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-22 18:59:15,999 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-22 18:59:15,999 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-22 18:59:15,999 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-22 18:59:15,999 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-22 18:59:16,000 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-22 18:59:16,000 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-22 18:59:16,000 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-22 18:59:16,000 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-22 18:59:16,002 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-22 18:59:16,002 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-22 18:59:16,002 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-22 18:59:16,002 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-22 18:59:16,003 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-22 18:59:16,003 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-08-22 18:59:16,003 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-22 18:59:16,004 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-22 18:59:16,004 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-22 18:59:16,004 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-22 18:59:16,004 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-08-22 18:59:16,005 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-22 18:59:16,005 INFO L138 SettingsManager]: * Use separate solver for trace checks=false [2020-08-22 18:59:16,412 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-22 18:59:16,437 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-22 18:59:16,442 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-22 18:59:16,445 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-22 18:59:16,445 INFO L275 PluginConnector]: CDTParser initialized [2020-08-22 18:59:16,446 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ssh-simplified/s3_clnt_3.cil-2.c [2020-08-22 18:59:16,527 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dd1677eab/7cd4ee9cdf414e88998bd54200407ce9/FLAG654789e41 [2020-08-22 18:59:17,094 INFO L306 CDTParser]: Found 1 translation units. [2020-08-22 18:59:17,094 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ssh-simplified/s3_clnt_3.cil-2.c [2020-08-22 18:59:17,110 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dd1677eab/7cd4ee9cdf414e88998bd54200407ce9/FLAG654789e41 [2020-08-22 18:59:17,409 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dd1677eab/7cd4ee9cdf414e88998bd54200407ce9 [2020-08-22 18:59:17,420 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-22 18:59:17,422 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-22 18:59:17,423 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-22 18:59:17,423 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-22 18:59:17,427 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-22 18:59:17,428 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 06:59:17" (1/1) ... [2020-08-22 18:59:17,432 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@dd15f64 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:59:17, skipping insertion in model container [2020-08-22 18:59:17,432 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 06:59:17" (1/1) ... [2020-08-22 18:59:17,442 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-22 18:59:17,516 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-22 18:59:18,033 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 18:59:18,037 INFO L203 MainTranslator]: Completed pre-run [2020-08-22 18:59:18,096 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 18:59:18,112 INFO L208 MainTranslator]: Completed translation [2020-08-22 18:59:18,113 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:59:18 WrapperNode [2020-08-22 18:59:18,113 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-22 18:59:18,114 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-22 18:59:18,114 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-22 18:59:18,116 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-22 18:59:18,132 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:59:18" (1/1) ... [2020-08-22 18:59:18,133 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:59:18" (1/1) ... [2020-08-22 18:59:18,144 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:59:18" (1/1) ... [2020-08-22 18:59:18,144 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:59:18" (1/1) ... [2020-08-22 18:59:18,160 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:59:18" (1/1) ... [2020-08-22 18:59:18,177 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:59:18" (1/1) ... [2020-08-22 18:59:18,180 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:59:18" (1/1) ... [2020-08-22 18:59:18,186 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-22 18:59:18,186 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-22 18:59:18,187 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-22 18:59:18,187 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-22 18:59:18,188 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:59:18" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-22 18:59:18,248 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-22 18:59:18,249 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-22 18:59:18,249 INFO L138 BoogieDeclarations]: Found implementation of procedure ssl3_connect [2020-08-22 18:59:18,249 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-22 18:59:18,249 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-22 18:59:18,249 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-08-22 18:59:18,250 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-22 18:59:18,250 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_long [2020-08-22 18:59:18,250 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_ulong [2020-08-22 18:59:18,250 INFO L130 BoogieDeclarations]: Found specification of procedure ssl3_connect [2020-08-22 18:59:18,250 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-22 18:59:18,251 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-22 18:59:18,251 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-22 18:59:18,408 WARN L779 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-08-22 18:59:19,295 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##85: assume !false; [2020-08-22 18:59:19,296 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##84: assume false; [2020-08-22 18:59:19,319 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-22 18:59:19,319 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-08-22 18:59:19,327 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 06:59:19 BoogieIcfgContainer [2020-08-22 18:59:19,327 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-22 18:59:19,329 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-22 18:59:19,329 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-22 18:59:19,333 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-22 18:59:19,333 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.08 06:59:17" (1/3) ... [2020-08-22 18:59:19,334 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@71eae88e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 06:59:19, skipping insertion in model container [2020-08-22 18:59:19,335 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:59:18" (2/3) ... [2020-08-22 18:59:19,335 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@71eae88e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 06:59:19, skipping insertion in model container [2020-08-22 18:59:19,335 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 06:59:19" (3/3) ... [2020-08-22 18:59:19,337 INFO L109 eAbstractionObserver]: Analyzing ICFG s3_clnt_3.cil-2.c [2020-08-22 18:59:19,348 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-22 18:59:19,357 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-22 18:59:19,371 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-22 18:59:19,397 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-22 18:59:19,398 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-22 18:59:19,398 INFO L377 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2020-08-22 18:59:19,398 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-22 18:59:19,398 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-22 18:59:19,399 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-22 18:59:19,399 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-22 18:59:19,399 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-22 18:59:19,425 INFO L276 IsEmpty]: Start isEmpty. Operand 414 states. [2020-08-22 18:59:19,449 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2020-08-22 18:59:19,449 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 18:59:19,450 INFO L422 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 18:59:19,451 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 18:59:19,457 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 18:59:19,458 INFO L82 PathProgramCache]: Analyzing trace with hash 44117518, now seen corresponding path program 1 times [2020-08-22 18:59:19,466 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 18:59:19,467 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [468466100] [2020-08-22 18:59:19,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 18:59:19,537 INFO L288 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-08-22 18:59:19,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:59:19,991 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 18:59:19,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:59:20,059 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 18:59:20,062 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [468466100] [2020-08-22 18:59:20,064 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 18:59:20,065 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-22 18:59:20,065 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [391573718] [2020-08-22 18:59:20,072 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-22 18:59:20,072 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 18:59:20,088 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-22 18:59:20,090 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-08-22 18:59:20,092 INFO L87 Difference]: Start difference. First operand 414 states. Second operand 6 states. [2020-08-22 18:59:20,644 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 18:59:20,645 INFO L93 Difference]: Finished difference Result 733 states and 948 transitions. [2020-08-22 18:59:20,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-08-22 18:59:20,647 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 181 [2020-08-22 18:59:20,649 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 18:59:20,688 INFO L225 Difference]: With dead ends: 733 [2020-08-22 18:59:20,688 INFO L226 Difference]: Without dead ends: 399 [2020-08-22 18:59:20,702 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-08-22 18:59:20,728 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 399 states. [2020-08-22 18:59:20,799 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 399 to 378. [2020-08-22 18:59:20,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 378 states. [2020-08-22 18:59:20,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 378 states to 378 states and 437 transitions. [2020-08-22 18:59:20,838 INFO L78 Accepts]: Start accepts. Automaton has 378 states and 437 transitions. Word has length 181 [2020-08-22 18:59:20,839 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 18:59:20,839 INFO L479 AbstractCegarLoop]: Abstraction has 378 states and 437 transitions. [2020-08-22 18:59:20,840 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-22 18:59:20,840 INFO L276 IsEmpty]: Start isEmpty. Operand 378 states and 437 transitions. [2020-08-22 18:59:20,844 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 204 [2020-08-22 18:59:20,845 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 18:59:20,845 INFO L422 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 18:59:20,846 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-22 18:59:20,846 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 18:59:20,846 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 18:59:20,847 INFO L82 PathProgramCache]: Analyzing trace with hash 1543076850, now seen corresponding path program 1 times [2020-08-22 18:59:20,847 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 18:59:20,848 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1056195980] [2020-08-22 18:59:20,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 18:59:20,890 INFO L288 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-08-22 18:59:20,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:59:21,130 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 18:59:21,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:59:21,177 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 18:59:21,178 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1056195980] [2020-08-22 18:59:21,178 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 18:59:21,178 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-22 18:59:21,179 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1817457691] [2020-08-22 18:59:21,180 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-22 18:59:21,180 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 18:59:21,181 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-22 18:59:21,181 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-08-22 18:59:21,181 INFO L87 Difference]: Start difference. First operand 378 states and 437 transitions. Second operand 6 states. [2020-08-22 18:59:21,569 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 18:59:21,569 INFO L93 Difference]: Finished difference Result 654 states and 804 transitions. [2020-08-22 18:59:21,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-08-22 18:59:21,570 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 203 [2020-08-22 18:59:21,571 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 18:59:21,573 INFO L225 Difference]: With dead ends: 654 [2020-08-22 18:59:21,574 INFO L226 Difference]: Without dead ends: 442 [2020-08-22 18:59:21,576 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-08-22 18:59:21,578 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 442 states. [2020-08-22 18:59:21,621 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 442 to 391. [2020-08-22 18:59:21,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 391 states. [2020-08-22 18:59:21,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 391 states to 391 states and 455 transitions. [2020-08-22 18:59:21,624 INFO L78 Accepts]: Start accepts. Automaton has 391 states and 455 transitions. Word has length 203 [2020-08-22 18:59:21,625 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 18:59:21,625 INFO L479 AbstractCegarLoop]: Abstraction has 391 states and 455 transitions. [2020-08-22 18:59:21,625 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-22 18:59:21,625 INFO L276 IsEmpty]: Start isEmpty. Operand 391 states and 455 transitions. [2020-08-22 18:59:21,628 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 208 [2020-08-22 18:59:21,629 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 18:59:21,629 INFO L422 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 18:59:21,629 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-22 18:59:21,630 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 18:59:21,630 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 18:59:21,630 INFO L82 PathProgramCache]: Analyzing trace with hash 1125063182, now seen corresponding path program 1 times [2020-08-22 18:59:21,630 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 18:59:21,631 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1980908412] [2020-08-22 18:59:21,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 18:59:21,641 INFO L288 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-08-22 18:59:21,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:59:21,722 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 18:59:21,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:59:21,745 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 18:59:21,746 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1980908412] [2020-08-22 18:59:21,746 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 18:59:21,747 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-22 18:59:21,747 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1225919420] [2020-08-22 18:59:21,748 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-22 18:59:21,748 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 18:59:21,749 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-22 18:59:21,749 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-22 18:59:21,750 INFO L87 Difference]: Start difference. First operand 391 states and 455 transitions. Second operand 3 states. [2020-08-22 18:59:21,978 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 18:59:21,978 INFO L93 Difference]: Finished difference Result 644 states and 778 transitions. [2020-08-22 18:59:21,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-22 18:59:21,979 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 207 [2020-08-22 18:59:21,980 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 18:59:21,985 INFO L225 Difference]: With dead ends: 644 [2020-08-22 18:59:21,987 INFO L226 Difference]: Without dead ends: 419 [2020-08-22 18:59:21,989 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-22 18:59:21,991 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 419 states. [2020-08-22 18:59:22,090 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 419 to 409. [2020-08-22 18:59:22,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 409 states. [2020-08-22 18:59:22,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 409 states to 409 states and 478 transitions. [2020-08-22 18:59:22,093 INFO L78 Accepts]: Start accepts. Automaton has 409 states and 478 transitions. Word has length 207 [2020-08-22 18:59:22,094 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 18:59:22,094 INFO L479 AbstractCegarLoop]: Abstraction has 409 states and 478 transitions. [2020-08-22 18:59:22,094 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-22 18:59:22,095 INFO L276 IsEmpty]: Start isEmpty. Operand 409 states and 478 transitions. [2020-08-22 18:59:22,098 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 215 [2020-08-22 18:59:22,098 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 18:59:22,100 INFO L422 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 18:59:22,100 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-22 18:59:22,101 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 18:59:22,101 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 18:59:22,101 INFO L82 PathProgramCache]: Analyzing trace with hash -144330786, now seen corresponding path program 1 times [2020-08-22 18:59:22,101 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 18:59:22,102 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2005367554] [2020-08-22 18:59:22,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 18:59:22,119 INFO L288 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-08-22 18:59:22,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:59:22,281 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 18:59:22,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:59:22,334 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 18:59:22,335 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2005367554] [2020-08-22 18:59:22,335 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 18:59:22,336 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-22 18:59:22,336 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1507094751] [2020-08-22 18:59:22,337 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-22 18:59:22,337 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 18:59:22,338 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-22 18:59:22,338 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-22 18:59:22,338 INFO L87 Difference]: Start difference. First operand 409 states and 478 transitions. Second operand 3 states. [2020-08-22 18:59:22,506 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 18:59:22,507 INFO L93 Difference]: Finished difference Result 888 states and 1088 transitions. [2020-08-22 18:59:22,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-22 18:59:22,508 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 214 [2020-08-22 18:59:22,510 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 18:59:22,516 INFO L225 Difference]: With dead ends: 888 [2020-08-22 18:59:22,516 INFO L226 Difference]: Without dead ends: 645 [2020-08-22 18:59:22,519 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-22 18:59:22,521 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 645 states. [2020-08-22 18:59:22,601 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 645 to 645. [2020-08-22 18:59:22,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 645 states. [2020-08-22 18:59:22,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 645 states to 645 states and 775 transitions. [2020-08-22 18:59:22,606 INFO L78 Accepts]: Start accepts. Automaton has 645 states and 775 transitions. Word has length 214 [2020-08-22 18:59:22,607 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 18:59:22,607 INFO L479 AbstractCegarLoop]: Abstraction has 645 states and 775 transitions. [2020-08-22 18:59:22,607 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-22 18:59:22,607 INFO L276 IsEmpty]: Start isEmpty. Operand 645 states and 775 transitions. [2020-08-22 18:59:22,614 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 230 [2020-08-22 18:59:22,615 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 18:59:22,615 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 18:59:22,616 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-22 18:59:22,616 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 18:59:22,616 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 18:59:22,617 INFO L82 PathProgramCache]: Analyzing trace with hash 1130092021, now seen corresponding path program 1 times [2020-08-22 18:59:22,617 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 18:59:22,618 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1482304175] [2020-08-22 18:59:22,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 18:59:22,634 INFO L288 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-08-22 18:59:22,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:59:22,776 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 18:59:22,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:59:22,857 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 18:59:22,858 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1482304175] [2020-08-22 18:59:22,858 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 18:59:22,858 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-22 18:59:22,859 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [638425597] [2020-08-22 18:59:22,860 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-22 18:59:22,860 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 18:59:22,861 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-22 18:59:22,861 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-22 18:59:22,861 INFO L87 Difference]: Start difference. First operand 645 states and 775 transitions. Second operand 3 states. [2020-08-22 18:59:23,168 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 18:59:23,168 INFO L93 Difference]: Finished difference Result 1188 states and 1470 transitions. [2020-08-22 18:59:23,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-22 18:59:23,169 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 229 [2020-08-22 18:59:23,170 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 18:59:23,176 INFO L225 Difference]: With dead ends: 1188 [2020-08-22 18:59:23,176 INFO L226 Difference]: Without dead ends: 709 [2020-08-22 18:59:23,180 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-22 18:59:23,183 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 709 states. [2020-08-22 18:59:23,273 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 709 to 685. [2020-08-22 18:59:23,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 685 states. [2020-08-22 18:59:23,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 685 states to 685 states and 825 transitions. [2020-08-22 18:59:23,279 INFO L78 Accepts]: Start accepts. Automaton has 685 states and 825 transitions. Word has length 229 [2020-08-22 18:59:23,279 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 18:59:23,280 INFO L479 AbstractCegarLoop]: Abstraction has 685 states and 825 transitions. [2020-08-22 18:59:23,280 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-22 18:59:23,280 INFO L276 IsEmpty]: Start isEmpty. Operand 685 states and 825 transitions. [2020-08-22 18:59:23,287 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 237 [2020-08-22 18:59:23,287 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 18:59:23,288 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 18:59:23,288 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-22 18:59:23,288 INFO L427 AbstractCegarLoop]: === Iteration 6 === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 18:59:23,289 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 18:59:23,289 INFO L82 PathProgramCache]: Analyzing trace with hash -2121264617, now seen corresponding path program 1 times [2020-08-22 18:59:23,290 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 18:59:23,290 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [646816313] [2020-08-22 18:59:23,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 18:59:23,305 INFO L288 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-08-22 18:59:23,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:59:23,436 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 18:59:23,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:59:23,506 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 18:59:23,507 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [646816313] [2020-08-22 18:59:23,509 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 18:59:23,509 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-22 18:59:23,511 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [52401897] [2020-08-22 18:59:23,512 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-22 18:59:23,512 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 18:59:23,513 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-22 18:59:23,513 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-22 18:59:23,514 INFO L87 Difference]: Start difference. First operand 685 states and 825 transitions. Second operand 3 states. [2020-08-22 18:59:23,702 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 18:59:23,702 INFO L93 Difference]: Finished difference Result 1653 states and 2033 transitions. [2020-08-22 18:59:23,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-22 18:59:23,704 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 236 [2020-08-22 18:59:23,711 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 18:59:23,720 INFO L225 Difference]: With dead ends: 1653 [2020-08-22 18:59:23,721 INFO L226 Difference]: Without dead ends: 1134 [2020-08-22 18:59:23,724 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-22 18:59:23,727 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1134 states. [2020-08-22 18:59:23,868 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1134 to 1132. [2020-08-22 18:59:23,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1132 states. [2020-08-22 18:59:23,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1132 states to 1132 states and 1369 transitions. [2020-08-22 18:59:23,874 INFO L78 Accepts]: Start accepts. Automaton has 1132 states and 1369 transitions. Word has length 236 [2020-08-22 18:59:23,875 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 18:59:23,875 INFO L479 AbstractCegarLoop]: Abstraction has 1132 states and 1369 transitions. [2020-08-22 18:59:23,875 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-22 18:59:23,875 INFO L276 IsEmpty]: Start isEmpty. Operand 1132 states and 1369 transitions. [2020-08-22 18:59:23,880 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 238 [2020-08-22 18:59:23,881 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 18:59:23,881 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 18:59:23,881 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-22 18:59:23,881 INFO L427 AbstractCegarLoop]: === Iteration 7 === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 18:59:23,882 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 18:59:23,882 INFO L82 PathProgramCache]: Analyzing trace with hash -1692173170, now seen corresponding path program 1 times [2020-08-22 18:59:23,882 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 18:59:23,883 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1957744168] [2020-08-22 18:59:23,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 18:59:23,893 INFO L288 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-08-22 18:59:23,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:59:23,995 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 18:59:23,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:59:24,033 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 18:59:24,034 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1957744168] [2020-08-22 18:59:24,034 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 18:59:24,035 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-22 18:59:24,035 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [634599112] [2020-08-22 18:59:24,036 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-22 18:59:24,036 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 18:59:24,036 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-22 18:59:24,037 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-22 18:59:24,037 INFO L87 Difference]: Start difference. First operand 1132 states and 1369 transitions. Second operand 3 states. [2020-08-22 18:59:24,232 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 18:59:24,232 INFO L93 Difference]: Finished difference Result 2116 states and 2590 transitions. [2020-08-22 18:59:24,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-22 18:59:24,233 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 237 [2020-08-22 18:59:24,233 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 18:59:24,239 INFO L225 Difference]: With dead ends: 2116 [2020-08-22 18:59:24,240 INFO L226 Difference]: Without dead ends: 1150 [2020-08-22 18:59:24,243 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-22 18:59:24,245 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1150 states. [2020-08-22 18:59:24,380 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1150 to 1140. [2020-08-22 18:59:24,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1140 states. [2020-08-22 18:59:24,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1140 states to 1140 states and 1373 transitions. [2020-08-22 18:59:24,389 INFO L78 Accepts]: Start accepts. Automaton has 1140 states and 1373 transitions. Word has length 237 [2020-08-22 18:59:24,390 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 18:59:24,390 INFO L479 AbstractCegarLoop]: Abstraction has 1140 states and 1373 transitions. [2020-08-22 18:59:24,390 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-22 18:59:24,390 INFO L276 IsEmpty]: Start isEmpty. Operand 1140 states and 1373 transitions. [2020-08-22 18:59:24,397 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 240 [2020-08-22 18:59:24,398 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 18:59:24,398 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 18:59:24,398 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-22 18:59:24,399 INFO L427 AbstractCegarLoop]: === Iteration 8 === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 18:59:24,399 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 18:59:24,399 INFO L82 PathProgramCache]: Analyzing trace with hash 1154899678, now seen corresponding path program 1 times [2020-08-22 18:59:24,399 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 18:59:24,400 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1778813882] [2020-08-22 18:59:24,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 18:59:24,416 INFO L288 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-08-22 18:59:24,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:59:24,503 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 18:59:24,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:59:24,553 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 18:59:24,554 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1778813882] [2020-08-22 18:59:24,554 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 18:59:24,554 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-22 18:59:24,555 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1578162873] [2020-08-22 18:59:24,556 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-22 18:59:24,556 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 18:59:24,557 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-22 18:59:24,557 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-22 18:59:24,557 INFO L87 Difference]: Start difference. First operand 1140 states and 1373 transitions. Second operand 3 states. [2020-08-22 18:59:24,925 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 18:59:24,925 INFO L93 Difference]: Finished difference Result 3074 states and 3757 transitions. [2020-08-22 18:59:24,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-22 18:59:24,926 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 239 [2020-08-22 18:59:24,926 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 18:59:24,939 INFO L225 Difference]: With dead ends: 3074 [2020-08-22 18:59:24,939 INFO L226 Difference]: Without dead ends: 2100 [2020-08-22 18:59:24,943 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-22 18:59:24,946 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2100 states. [2020-08-22 18:59:25,228 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2100 to 2098. [2020-08-22 18:59:25,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2098 states. [2020-08-22 18:59:25,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2098 states to 2098 states and 2541 transitions. [2020-08-22 18:59:25,240 INFO L78 Accepts]: Start accepts. Automaton has 2098 states and 2541 transitions. Word has length 239 [2020-08-22 18:59:25,240 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 18:59:25,241 INFO L479 AbstractCegarLoop]: Abstraction has 2098 states and 2541 transitions. [2020-08-22 18:59:25,241 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-22 18:59:25,241 INFO L276 IsEmpty]: Start isEmpty. Operand 2098 states and 2541 transitions. [2020-08-22 18:59:25,245 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 240 [2020-08-22 18:59:25,246 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 18:59:25,246 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 18:59:25,247 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-22 18:59:25,247 INFO L427 AbstractCegarLoop]: === Iteration 9 === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 18:59:25,247 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 18:59:25,247 INFO L82 PathProgramCache]: Analyzing trace with hash -1231609828, now seen corresponding path program 1 times [2020-08-22 18:59:25,248 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 18:59:25,248 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1698047338] [2020-08-22 18:59:25,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 18:59:25,257 INFO L288 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-08-22 18:59:25,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:59:25,324 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 18:59:25,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:59:25,357 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 18:59:25,358 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1698047338] [2020-08-22 18:59:25,358 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 18:59:25,358 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-22 18:59:25,363 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [636783244] [2020-08-22 18:59:25,364 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-22 18:59:25,364 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 18:59:25,364 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-22 18:59:25,365 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-22 18:59:25,365 INFO L87 Difference]: Start difference. First operand 2098 states and 2541 transitions. Second operand 3 states. [2020-08-22 18:59:25,694 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 18:59:25,694 INFO L93 Difference]: Finished difference Result 3089 states and 3751 transitions. [2020-08-22 18:59:25,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-22 18:59:25,695 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 239 [2020-08-22 18:59:25,696 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 18:59:25,709 INFO L225 Difference]: With dead ends: 3089 [2020-08-22 18:59:25,710 INFO L226 Difference]: Without dead ends: 2115 [2020-08-22 18:59:25,713 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-22 18:59:25,718 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2115 states. [2020-08-22 18:59:25,994 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2115 to 2113. [2020-08-22 18:59:25,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2113 states. [2020-08-22 18:59:26,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2113 states to 2113 states and 2547 transitions. [2020-08-22 18:59:26,005 INFO L78 Accepts]: Start accepts. Automaton has 2113 states and 2547 transitions. Word has length 239 [2020-08-22 18:59:26,006 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 18:59:26,010 INFO L479 AbstractCegarLoop]: Abstraction has 2113 states and 2547 transitions. [2020-08-22 18:59:26,010 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-22 18:59:26,011 INFO L276 IsEmpty]: Start isEmpty. Operand 2113 states and 2547 transitions. [2020-08-22 18:59:26,016 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 241 [2020-08-22 18:59:26,017 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 18:59:26,017 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 18:59:26,017 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-22 18:59:26,017 INFO L427 AbstractCegarLoop]: === Iteration 10 === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 18:59:26,018 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 18:59:26,018 INFO L82 PathProgramCache]: Analyzing trace with hash -2054606457, now seen corresponding path program 1 times [2020-08-22 18:59:26,018 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 18:59:26,018 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [66634487] [2020-08-22 18:59:26,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 18:59:26,030 INFO L288 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-08-22 18:59:26,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:59:26,106 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 18:59:26,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:59:26,145 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 18:59:26,146 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [66634487] [2020-08-22 18:59:26,146 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 18:59:26,146 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-22 18:59:26,147 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [83939613] [2020-08-22 18:59:26,147 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-22 18:59:26,148 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 18:59:26,148 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-22 18:59:26,149 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-22 18:59:26,149 INFO L87 Difference]: Start difference. First operand 2113 states and 2547 transitions. Second operand 3 states. [2020-08-22 18:59:26,555 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 18:59:26,556 INFO L93 Difference]: Finished difference Result 4045 states and 4926 transitions. [2020-08-22 18:59:26,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-22 18:59:26,556 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 240 [2020-08-22 18:59:26,557 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 18:59:26,574 INFO L225 Difference]: With dead ends: 4045 [2020-08-22 18:59:26,574 INFO L226 Difference]: Without dead ends: 3068 [2020-08-22 18:59:26,579 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-22 18:59:26,583 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3068 states. [2020-08-22 18:59:26,940 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3068 to 3068. [2020-08-22 18:59:26,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3068 states. [2020-08-22 18:59:26,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3068 states to 3068 states and 3710 transitions. [2020-08-22 18:59:26,958 INFO L78 Accepts]: Start accepts. Automaton has 3068 states and 3710 transitions. Word has length 240 [2020-08-22 18:59:26,959 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 18:59:26,960 INFO L479 AbstractCegarLoop]: Abstraction has 3068 states and 3710 transitions. [2020-08-22 18:59:26,960 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-22 18:59:26,960 INFO L276 IsEmpty]: Start isEmpty. Operand 3068 states and 3710 transitions. [2020-08-22 18:59:26,968 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 251 [2020-08-22 18:59:26,968 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 18:59:26,971 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 18:59:26,971 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-22 18:59:26,972 INFO L427 AbstractCegarLoop]: === Iteration 11 === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 18:59:26,972 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 18:59:26,972 INFO L82 PathProgramCache]: Analyzing trace with hash 1762569168, now seen corresponding path program 1 times [2020-08-22 18:59:26,973 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 18:59:26,973 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [120522919] [2020-08-22 18:59:26,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 18:59:26,986 INFO L288 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-08-22 18:59:27,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:59:27,063 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 18:59:27,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:59:27,112 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 18:59:27,112 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [120522919] [2020-08-22 18:59:27,113 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 18:59:27,113 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-22 18:59:27,113 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [959106311] [2020-08-22 18:59:27,114 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-22 18:59:27,114 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 18:59:27,114 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-22 18:59:27,115 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-22 18:59:27,115 INFO L87 Difference]: Start difference. First operand 3068 states and 3710 transitions. Second operand 3 states. [2020-08-22 18:59:27,796 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 18:59:27,796 INFO L93 Difference]: Finished difference Result 6702 states and 8354 transitions. [2020-08-22 18:59:27,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-22 18:59:27,797 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 250 [2020-08-22 18:59:27,797 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 18:59:27,819 INFO L225 Difference]: With dead ends: 6702 [2020-08-22 18:59:27,819 INFO L226 Difference]: Without dead ends: 3803 [2020-08-22 18:59:27,828 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-22 18:59:27,834 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3803 states. [2020-08-22 18:59:28,128 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3803 to 3545. [2020-08-22 18:59:28,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3545 states. [2020-08-22 18:59:28,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3545 states to 3545 states and 4226 transitions. [2020-08-22 18:59:28,142 INFO L78 Accepts]: Start accepts. Automaton has 3545 states and 4226 transitions. Word has length 250 [2020-08-22 18:59:28,143 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 18:59:28,143 INFO L479 AbstractCegarLoop]: Abstraction has 3545 states and 4226 transitions. [2020-08-22 18:59:28,143 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-22 18:59:28,143 INFO L276 IsEmpty]: Start isEmpty. Operand 3545 states and 4226 transitions. [2020-08-22 18:59:28,153 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 251 [2020-08-22 18:59:28,153 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 18:59:28,154 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 18:59:28,154 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-08-22 18:59:28,154 INFO L427 AbstractCegarLoop]: === Iteration 12 === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 18:59:28,155 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 18:59:28,155 INFO L82 PathProgramCache]: Analyzing trace with hash -81032144, now seen corresponding path program 1 times [2020-08-22 18:59:28,155 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 18:59:28,156 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [159971212] [2020-08-22 18:59:28,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 18:59:28,166 INFO L288 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-08-22 18:59:28,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:59:28,236 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 18:59:28,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:59:28,307 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 18:59:28,307 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [159971212] [2020-08-22 18:59:28,308 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 18:59:28,308 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-22 18:59:28,308 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [166187050] [2020-08-22 18:59:28,309 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-22 18:59:28,309 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 18:59:28,309 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-22 18:59:28,309 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-22 18:59:28,310 INFO L87 Difference]: Start difference. First operand 3545 states and 4226 transitions. Second operand 3 states. [2020-08-22 18:59:28,761 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 18:59:28,762 INFO L93 Difference]: Finished difference Result 7246 states and 8728 transitions. [2020-08-22 18:59:28,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-22 18:59:28,762 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 250 [2020-08-22 18:59:28,763 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 18:59:28,785 INFO L225 Difference]: With dead ends: 7246 [2020-08-22 18:59:28,785 INFO L226 Difference]: Without dead ends: 3882 [2020-08-22 18:59:28,797 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-22 18:59:28,805 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3882 states. [2020-08-22 18:59:29,185 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3882 to 3758. [2020-08-22 18:59:29,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3758 states. [2020-08-22 18:59:29,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3758 states to 3758 states and 4454 transitions. [2020-08-22 18:59:29,199 INFO L78 Accepts]: Start accepts. Automaton has 3758 states and 4454 transitions. Word has length 250 [2020-08-22 18:59:29,200 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 18:59:29,200 INFO L479 AbstractCegarLoop]: Abstraction has 3758 states and 4454 transitions. [2020-08-22 18:59:29,200 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-22 18:59:29,200 INFO L276 IsEmpty]: Start isEmpty. Operand 3758 states and 4454 transitions. [2020-08-22 18:59:29,210 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 266 [2020-08-22 18:59:29,211 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 18:59:29,212 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 18:59:29,212 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-08-22 18:59:29,212 INFO L427 AbstractCegarLoop]: === Iteration 13 === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 18:59:29,213 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 18:59:29,213 INFO L82 PathProgramCache]: Analyzing trace with hash 713835900, now seen corresponding path program 1 times [2020-08-22 18:59:29,213 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 18:59:29,213 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2057997034] [2020-08-22 18:59:29,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 18:59:29,280 INFO L288 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-08-22 18:59:29,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:59:29,377 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 18:59:29,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:59:29,422 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 18:59:29,423 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2057997034] [2020-08-22 18:59:29,423 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 18:59:29,423 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-22 18:59:29,423 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1588928583] [2020-08-22 18:59:29,424 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-22 18:59:29,424 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 18:59:29,425 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-22 18:59:29,425 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-08-22 18:59:29,425 INFO L87 Difference]: Start difference. First operand 3758 states and 4454 transitions. Second operand 5 states. [2020-08-22 18:59:30,153 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 18:59:30,153 INFO L93 Difference]: Finished difference Result 6233 states and 7321 transitions. [2020-08-22 18:59:30,153 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-08-22 18:59:30,154 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 265 [2020-08-22 18:59:30,154 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 18:59:30,177 INFO L225 Difference]: With dead ends: 6233 [2020-08-22 18:59:30,178 INFO L226 Difference]: Without dead ends: 4430 [2020-08-22 18:59:30,185 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-08-22 18:59:30,192 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4430 states. [2020-08-22 18:59:30,622 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4430 to 3860. [2020-08-22 18:59:30,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3860 states. [2020-08-22 18:59:30,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3860 states to 3860 states and 4565 transitions. [2020-08-22 18:59:30,637 INFO L78 Accepts]: Start accepts. Automaton has 3860 states and 4565 transitions. Word has length 265 [2020-08-22 18:59:30,638 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 18:59:30,638 INFO L479 AbstractCegarLoop]: Abstraction has 3860 states and 4565 transitions. [2020-08-22 18:59:30,638 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-22 18:59:30,638 INFO L276 IsEmpty]: Start isEmpty. Operand 3860 states and 4565 transitions. [2020-08-22 18:59:30,649 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 269 [2020-08-22 18:59:30,649 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 18:59:30,650 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 18:59:30,650 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-08-22 18:59:30,650 INFO L427 AbstractCegarLoop]: === Iteration 14 === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 18:59:30,651 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 18:59:30,651 INFO L82 PathProgramCache]: Analyzing trace with hash -700825412, now seen corresponding path program 2 times [2020-08-22 18:59:30,651 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 18:59:30,658 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1333364569] [2020-08-22 18:59:30,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 18:59:30,667 INFO L288 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-08-22 18:59:30,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:59:30,754 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 18:59:30,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:59:30,802 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 18:59:30,802 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1333364569] [2020-08-22 18:59:30,802 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 18:59:30,803 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-22 18:59:30,803 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1383016048] [2020-08-22 18:59:30,803 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-22 18:59:30,804 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 18:59:30,804 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-22 18:59:30,804 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-08-22 18:59:30,804 INFO L87 Difference]: Start difference. First operand 3860 states and 4565 transitions. Second operand 5 states. [2020-08-22 18:59:31,582 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 18:59:31,582 INFO L93 Difference]: Finished difference Result 6567 states and 7700 transitions. [2020-08-22 18:59:31,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-08-22 18:59:31,583 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 268 [2020-08-22 18:59:31,584 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 18:59:31,645 INFO L225 Difference]: With dead ends: 6567 [2020-08-22 18:59:31,646 INFO L226 Difference]: Without dead ends: 4662 [2020-08-22 18:59:31,656 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-08-22 18:59:31,666 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4662 states. [2020-08-22 18:59:32,205 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4662 to 3897. [2020-08-22 18:59:32,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3897 states. [2020-08-22 18:59:32,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3897 states to 3897 states and 4611 transitions. [2020-08-22 18:59:32,217 INFO L78 Accepts]: Start accepts. Automaton has 3897 states and 4611 transitions. Word has length 268 [2020-08-22 18:59:32,217 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 18:59:32,217 INFO L479 AbstractCegarLoop]: Abstraction has 3897 states and 4611 transitions. [2020-08-22 18:59:32,217 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-22 18:59:32,218 INFO L276 IsEmpty]: Start isEmpty. Operand 3897 states and 4611 transitions. [2020-08-22 18:59:32,234 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 270 [2020-08-22 18:59:32,234 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 18:59:32,234 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 18:59:32,235 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-08-22 18:59:32,235 INFO L427 AbstractCegarLoop]: === Iteration 15 === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 18:59:32,235 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 18:59:32,236 INFO L82 PathProgramCache]: Analyzing trace with hash 19964066, now seen corresponding path program 1 times [2020-08-22 18:59:32,236 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 18:59:32,236 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [300591944] [2020-08-22 18:59:32,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 18:59:32,246 INFO L288 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-08-22 18:59:32,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:59:32,329 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 18:59:32,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:59:32,366 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 18:59:32,367 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [300591944] [2020-08-22 18:59:32,367 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 18:59:32,368 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-22 18:59:32,368 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [547398946] [2020-08-22 18:59:32,368 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-22 18:59:32,368 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 18:59:32,369 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-22 18:59:32,369 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-08-22 18:59:32,369 INFO L87 Difference]: Start difference. First operand 3897 states and 4611 transitions. Second operand 5 states. [2020-08-22 18:59:33,217 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 18:59:33,217 INFO L93 Difference]: Finished difference Result 6406 states and 7521 transitions. [2020-08-22 18:59:33,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-08-22 18:59:33,218 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 269 [2020-08-22 18:59:33,219 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 18:59:33,229 INFO L225 Difference]: With dead ends: 6406 [2020-08-22 18:59:33,229 INFO L226 Difference]: Without dead ends: 4464 [2020-08-22 18:59:33,236 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-08-22 18:59:33,243 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4464 states. [2020-08-22 18:59:33,583 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4464 to 3803. [2020-08-22 18:59:33,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3803 states. [2020-08-22 18:59:33,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3803 states to 3803 states and 4502 transitions. [2020-08-22 18:59:33,593 INFO L78 Accepts]: Start accepts. Automaton has 3803 states and 4502 transitions. Word has length 269 [2020-08-22 18:59:33,594 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 18:59:33,594 INFO L479 AbstractCegarLoop]: Abstraction has 3803 states and 4502 transitions. [2020-08-22 18:59:33,594 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-22 18:59:33,594 INFO L276 IsEmpty]: Start isEmpty. Operand 3803 states and 4502 transitions. [2020-08-22 18:59:33,605 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 270 [2020-08-22 18:59:33,605 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 18:59:33,605 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 18:59:33,606 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-08-22 18:59:33,606 INFO L427 AbstractCegarLoop]: === Iteration 16 === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 18:59:33,606 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 18:59:33,606 INFO L82 PathProgramCache]: Analyzing trace with hash -76751101, now seen corresponding path program 1 times [2020-08-22 18:59:33,607 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 18:59:33,607 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2138690447] [2020-08-22 18:59:33,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 18:59:33,617 INFO L288 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-08-22 18:59:33,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:59:33,688 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 18:59:33,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:59:33,734 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 18:59:33,734 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2138690447] [2020-08-22 18:59:33,735 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 18:59:33,735 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-22 18:59:33,735 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [324669903] [2020-08-22 18:59:33,736 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-22 18:59:33,736 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 18:59:33,736 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-22 18:59:33,736 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-22 18:59:33,737 INFO L87 Difference]: Start difference. First operand 3803 states and 4502 transitions. Second operand 3 states. [2020-08-22 18:59:34,509 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 18:59:34,509 INFO L93 Difference]: Finished difference Result 7744 states and 9274 transitions. [2020-08-22 18:59:34,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-22 18:59:34,510 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 269 [2020-08-22 18:59:34,510 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 18:59:34,519 INFO L225 Difference]: With dead ends: 7744 [2020-08-22 18:59:34,519 INFO L226 Difference]: Without dead ends: 4122 [2020-08-22 18:59:34,528 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-22 18:59:34,534 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4122 states. [2020-08-22 18:59:34,853 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4122 to 4040. [2020-08-22 18:59:34,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4040 states. [2020-08-22 18:59:34,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4040 states to 4040 states and 4754 transitions. [2020-08-22 18:59:34,863 INFO L78 Accepts]: Start accepts. Automaton has 4040 states and 4754 transitions. Word has length 269 [2020-08-22 18:59:34,863 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 18:59:34,864 INFO L479 AbstractCegarLoop]: Abstraction has 4040 states and 4754 transitions. [2020-08-22 18:59:34,864 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-22 18:59:34,864 INFO L276 IsEmpty]: Start isEmpty. Operand 4040 states and 4754 transitions. [2020-08-22 18:59:34,873 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 272 [2020-08-22 18:59:34,873 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 18:59:34,874 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 18:59:34,874 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-08-22 18:59:34,874 INFO L427 AbstractCegarLoop]: === Iteration 17 === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 18:59:34,874 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 18:59:34,875 INFO L82 PathProgramCache]: Analyzing trace with hash 360016174, now seen corresponding path program 1 times [2020-08-22 18:59:34,875 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 18:59:34,875 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [737248339] [2020-08-22 18:59:34,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 18:59:34,882 INFO L288 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-08-22 18:59:34,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:59:34,965 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 18:59:34,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:59:35,018 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 18:59:35,019 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [737248339] [2020-08-22 18:59:35,019 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 18:59:35,020 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-22 18:59:35,020 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [651826966] [2020-08-22 18:59:35,020 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-22 18:59:35,021 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 18:59:35,021 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-22 18:59:35,021 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-22 18:59:35,021 INFO L87 Difference]: Start difference. First operand 4040 states and 4754 transitions. Second operand 4 states. [2020-08-22 18:59:36,122 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 18:59:36,123 INFO L93 Difference]: Finished difference Result 8465 states and 10020 transitions. [2020-08-22 18:59:36,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-22 18:59:36,123 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 271 [2020-08-22 18:59:36,124 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 18:59:36,137 INFO L225 Difference]: With dead ends: 8465 [2020-08-22 18:59:36,138 INFO L226 Difference]: Without dead ends: 6494 [2020-08-22 18:59:36,145 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-08-22 18:59:36,154 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6494 states. [2020-08-22 18:59:36,514 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6494 to 4070. [2020-08-22 18:59:36,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4070 states. [2020-08-22 18:59:36,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4070 states to 4070 states and 4793 transitions. [2020-08-22 18:59:36,528 INFO L78 Accepts]: Start accepts. Automaton has 4070 states and 4793 transitions. Word has length 271 [2020-08-22 18:59:36,528 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 18:59:36,528 INFO L479 AbstractCegarLoop]: Abstraction has 4070 states and 4793 transitions. [2020-08-22 18:59:36,529 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-22 18:59:36,529 INFO L276 IsEmpty]: Start isEmpty. Operand 4070 states and 4793 transitions. [2020-08-22 18:59:36,547 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 272 [2020-08-22 18:59:36,548 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 18:59:36,548 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 18:59:36,548 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-08-22 18:59:36,548 INFO L427 AbstractCegarLoop]: === Iteration 18 === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 18:59:36,550 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 18:59:36,550 INFO L82 PathProgramCache]: Analyzing trace with hash 663575758, now seen corresponding path program 1 times [2020-08-22 18:59:36,551 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 18:59:36,551 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [138427925] [2020-08-22 18:59:36,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 18:59:36,560 INFO L288 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-08-22 18:59:36,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:59:36,641 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 18:59:36,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:59:36,690 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 18:59:36,691 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [138427925] [2020-08-22 18:59:36,691 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 18:59:36,691 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-22 18:59:36,692 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [849317141] [2020-08-22 18:59:36,693 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-22 18:59:36,693 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 18:59:36,693 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-22 18:59:36,694 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-22 18:59:36,694 INFO L87 Difference]: Start difference. First operand 4070 states and 4793 transitions. Second operand 4 states. [2020-08-22 18:59:38,026 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 18:59:38,026 INFO L93 Difference]: Finished difference Result 11247 states and 13651 transitions. [2020-08-22 18:59:38,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-22 18:59:38,027 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 271 [2020-08-22 18:59:38,028 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 18:59:38,046 INFO L225 Difference]: With dead ends: 11247 [2020-08-22 18:59:38,046 INFO L226 Difference]: Without dead ends: 7358 [2020-08-22 18:59:38,058 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-08-22 18:59:38,077 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7358 states. [2020-08-22 18:59:38,549 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7358 to 4556. [2020-08-22 18:59:38,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4556 states. [2020-08-22 18:59:38,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4556 states to 4556 states and 5378 transitions. [2020-08-22 18:59:38,561 INFO L78 Accepts]: Start accepts. Automaton has 4556 states and 5378 transitions. Word has length 271 [2020-08-22 18:59:38,561 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 18:59:38,561 INFO L479 AbstractCegarLoop]: Abstraction has 4556 states and 5378 transitions. [2020-08-22 18:59:38,562 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-22 18:59:38,562 INFO L276 IsEmpty]: Start isEmpty. Operand 4556 states and 5378 transitions. [2020-08-22 18:59:38,574 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 292 [2020-08-22 18:59:38,574 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 18:59:38,574 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 18:59:38,575 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-08-22 18:59:38,575 INFO L427 AbstractCegarLoop]: === Iteration 19 === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 18:59:38,575 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 18:59:38,576 INFO L82 PathProgramCache]: Analyzing trace with hash 651686925, now seen corresponding path program 1 times [2020-08-22 18:59:38,578 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 18:59:38,578 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1066544098] [2020-08-22 18:59:38,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 18:59:38,585 INFO L288 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-08-22 18:59:38,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:59:38,677 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 18:59:38,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:59:38,736 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 18:59:38,737 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1066544098] [2020-08-22 18:59:38,738 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 18:59:38,738 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-22 18:59:38,738 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1348494293] [2020-08-22 18:59:38,739 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-22 18:59:38,740 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 18:59:38,740 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-22 18:59:38,740 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-22 18:59:38,741 INFO L87 Difference]: Start difference. First operand 4556 states and 5378 transitions. Second operand 3 states. [2020-08-22 18:59:39,760 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 18:59:39,762 INFO L93 Difference]: Finished difference Result 9759 states and 11774 transitions. [2020-08-22 18:59:39,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-22 18:59:39,763 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 291 [2020-08-22 18:59:39,764 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 18:59:39,779 INFO L225 Difference]: With dead ends: 9759 [2020-08-22 18:59:39,779 INFO L226 Difference]: Without dead ends: 5372 [2020-08-22 18:59:39,793 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-22 18:59:39,805 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5372 states. [2020-08-22 18:59:40,305 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5372 to 5009. [2020-08-22 18:59:40,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5009 states. [2020-08-22 18:59:40,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5009 states to 5009 states and 5906 transitions. [2020-08-22 18:59:40,318 INFO L78 Accepts]: Start accepts. Automaton has 5009 states and 5906 transitions. Word has length 291 [2020-08-22 18:59:40,322 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 18:59:40,323 INFO L479 AbstractCegarLoop]: Abstraction has 5009 states and 5906 transitions. [2020-08-22 18:59:40,323 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-22 18:59:40,323 INFO L276 IsEmpty]: Start isEmpty. Operand 5009 states and 5906 transitions. [2020-08-22 18:59:40,334 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 294 [2020-08-22 18:59:40,334 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 18:59:40,335 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 5, 5, 4, 4, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 18:59:40,335 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-08-22 18:59:40,336 INFO L427 AbstractCegarLoop]: === Iteration 20 === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 18:59:40,337 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 18:59:40,337 INFO L82 PathProgramCache]: Analyzing trace with hash -2093654891, now seen corresponding path program 1 times [2020-08-22 18:59:40,338 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 18:59:40,338 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [743553276] [2020-08-22 18:59:40,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 18:59:40,345 INFO L288 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-08-22 18:59:40,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:59:40,406 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 18:59:40,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:59:40,451 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 18:59:40,452 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [743553276] [2020-08-22 18:59:40,452 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 18:59:40,452 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-22 18:59:40,453 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [76672621] [2020-08-22 18:59:40,453 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-22 18:59:40,453 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 18:59:40,454 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-22 18:59:40,454 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-22 18:59:40,454 INFO L87 Difference]: Start difference. First operand 5009 states and 5906 transitions. Second operand 3 states. [2020-08-22 18:59:41,322 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 18:59:41,322 INFO L93 Difference]: Finished difference Result 9837 states and 11644 transitions. [2020-08-22 18:59:41,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-22 18:59:41,322 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 293 [2020-08-22 18:59:41,323 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 18:59:41,341 INFO L225 Difference]: With dead ends: 9837 [2020-08-22 18:59:41,342 INFO L226 Difference]: Without dead ends: 6611 [2020-08-22 18:59:41,351 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-22 18:59:41,358 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6611 states. [2020-08-22 18:59:42,032 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6611 to 6611. [2020-08-22 18:59:42,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6611 states. [2020-08-22 18:59:42,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6611 states to 6611 states and 7805 transitions. [2020-08-22 18:59:42,047 INFO L78 Accepts]: Start accepts. Automaton has 6611 states and 7805 transitions. Word has length 293 [2020-08-22 18:59:42,048 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 18:59:42,048 INFO L479 AbstractCegarLoop]: Abstraction has 6611 states and 7805 transitions. [2020-08-22 18:59:42,048 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-22 18:59:42,048 INFO L276 IsEmpty]: Start isEmpty. Operand 6611 states and 7805 transitions. [2020-08-22 18:59:42,061 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 299 [2020-08-22 18:59:42,062 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 18:59:42,062 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 5, 5, 4, 4, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 18:59:42,062 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-08-22 18:59:42,063 INFO L427 AbstractCegarLoop]: === Iteration 21 === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 18:59:42,063 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 18:59:42,063 INFO L82 PathProgramCache]: Analyzing trace with hash -1985620780, now seen corresponding path program 1 times [2020-08-22 18:59:42,063 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 18:59:42,064 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1161818899] [2020-08-22 18:59:42,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 18:59:42,072 INFO L288 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-08-22 18:59:42,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:59:42,139 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 18:59:42,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:59:42,185 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 18:59:42,185 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1161818899] [2020-08-22 18:59:42,185 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 18:59:42,186 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-22 18:59:42,186 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [715353759] [2020-08-22 18:59:42,186 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-22 18:59:42,187 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 18:59:42,187 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-22 18:59:42,188 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-22 18:59:42,188 INFO L87 Difference]: Start difference. First operand 6611 states and 7805 transitions. Second operand 3 states. [2020-08-22 18:59:43,061 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 18:59:43,061 INFO L93 Difference]: Finished difference Result 12305 states and 14562 transitions. [2020-08-22 18:59:43,061 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-22 18:59:43,061 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 298 [2020-08-22 18:59:43,062 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 18:59:43,077 INFO L225 Difference]: With dead ends: 12305 [2020-08-22 18:59:43,077 INFO L226 Difference]: Without dead ends: 7477 [2020-08-22 18:59:43,090 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-22 18:59:43,098 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7477 states. [2020-08-22 18:59:43,749 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7477 to 7477. [2020-08-22 18:59:43,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7477 states. [2020-08-22 18:59:43,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7477 states to 7477 states and 8822 transitions. [2020-08-22 18:59:43,764 INFO L78 Accepts]: Start accepts. Automaton has 7477 states and 8822 transitions. Word has length 298 [2020-08-22 18:59:43,765 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 18:59:43,765 INFO L479 AbstractCegarLoop]: Abstraction has 7477 states and 8822 transitions. [2020-08-22 18:59:43,765 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-22 18:59:43,765 INFO L276 IsEmpty]: Start isEmpty. Operand 7477 states and 8822 transitions. [2020-08-22 18:59:43,776 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 300 [2020-08-22 18:59:43,776 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 18:59:43,776 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 5, 5, 4, 4, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 18:59:43,777 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-08-22 18:59:43,777 INFO L427 AbstractCegarLoop]: === Iteration 22 === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 18:59:43,777 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 18:59:43,777 INFO L82 PathProgramCache]: Analyzing trace with hash -638739787, now seen corresponding path program 1 times [2020-08-22 18:59:43,777 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 18:59:43,778 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [679098445] [2020-08-22 18:59:43,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 18:59:43,787 INFO L288 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-08-22 18:59:43,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-22 18:59:43,843 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-08-22 18:59:43,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-22 18:59:43,914 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-08-22 18:59:44,041 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-22 18:59:44,041 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-22 18:59:44,043 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-08-22 18:59:44,077 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.08 06:59:44 BoogieIcfgContainer [2020-08-22 18:59:44,077 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-22 18:59:44,079 INFO L168 Benchmark]: Toolchain (without parser) took 26657.52 ms. Allocated memory was 138.4 MB in the beginning and 1.3 GB in the end (delta: 1.2 GB). Free memory was 101.8 MB in the beginning and 304.5 MB in the end (delta: -202.7 MB). Peak memory consumption was 953.9 MB. Max. memory is 7.1 GB. [2020-08-22 18:59:44,080 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 138.4 MB. Free memory was 121.0 MB in the beginning and 120.5 MB in the end (delta: 419.7 kB). Peak memory consumption was 419.7 kB. Max. memory is 7.1 GB. [2020-08-22 18:59:44,081 INFO L168 Benchmark]: CACSL2BoogieTranslator took 690.62 ms. Allocated memory was 138.4 MB in the beginning and 201.9 MB in the end (delta: 63.4 MB). Free memory was 101.4 MB in the beginning and 175.9 MB in the end (delta: -74.5 MB). Peak memory consumption was 25.0 MB. Max. memory is 7.1 GB. [2020-08-22 18:59:44,081 INFO L168 Benchmark]: Boogie Preprocessor took 71.99 ms. Allocated memory is still 201.9 MB. Free memory was 175.9 MB in the beginning and 173.9 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. [2020-08-22 18:59:44,082 INFO L168 Benchmark]: RCFGBuilder took 1141.30 ms. Allocated memory is still 201.9 MB. Free memory was 173.9 MB in the beginning and 106.0 MB in the end (delta: 67.9 MB). Peak memory consumption was 67.9 MB. Max. memory is 7.1 GB. [2020-08-22 18:59:44,082 INFO L168 Benchmark]: TraceAbstraction took 24747.89 ms. Allocated memory was 201.9 MB in the beginning and 1.3 GB in the end (delta: 1.1 GB). Free memory was 105.0 MB in the beginning and 304.5 MB in the end (delta: -199.5 MB). Peak memory consumption was 893.6 MB. Max. memory is 7.1 GB. [2020-08-22 18:59:44,085 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 138.4 MB. Free memory was 121.0 MB in the beginning and 120.5 MB in the end (delta: 419.7 kB). Peak memory consumption was 419.7 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 690.62 ms. Allocated memory was 138.4 MB in the beginning and 201.9 MB in the end (delta: 63.4 MB). Free memory was 101.4 MB in the beginning and 175.9 MB in the end (delta: -74.5 MB). Peak memory consumption was 25.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 71.99 ms. Allocated memory is still 201.9 MB. Free memory was 175.9 MB in the beginning and 173.9 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1141.30 ms. Allocated memory is still 201.9 MB. Free memory was 173.9 MB in the beginning and 106.0 MB in the end (delta: 67.9 MB). Peak memory consumption was 67.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 24747.89 ms. Allocated memory was 201.9 MB in the beginning and 1.3 GB in the end (delta: 1.1 GB). Free memory was 105.0 MB in the beginning and 304.5 MB in the end (delta: -199.5 MB). Peak memory consumption was 893.6 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 573]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L578] int s ; [L582] s = 12292 [L583] CALL ssl3_connect(s) [L12] int s__info_callback = __VERIFIER_nondet_int() ; [L13] int s__in_handshake = __VERIFIER_nondet_int() ; [L14] int s__state ; [L15] int s__new_session ; [L16] int s__server ; [L17] int s__version = __VERIFIER_nondet_int() ; [L18] int s__type ; [L19] int s__init_num ; [L20] int s__bbio = __VERIFIER_nondet_int() ; [L21] int s__wbio = __VERIFIER_nondet_int() ; [L22] int s__hit = __VERIFIER_nondet_int() ; [L23] int s__rwstate ; [L24] int s__init_buf___0 = __VERIFIER_nondet_int() ; [L25] int s__debug = __VERIFIER_nondet_int() ; [L26] int s__shutdown ; [L27] int s__ctx__info_callback = __VERIFIER_nondet_int() ; [L28] int s__ctx__stats__sess_connect_renegotiate = __VERIFIER_nondet_int() ; [L29] int s__ctx__stats__sess_connect = __VERIFIER_nondet_int() ; [L30] int s__ctx__stats__sess_hit = __VERIFIER_nondet_int() ; [L31] int s__ctx__stats__sess_connect_good = __VERIFIER_nondet_int() ; [L32] int s__s3__change_cipher_spec ; [L33] int s__s3__flags = __VERIFIER_nondet_int() ; [L34] int s__s3__delay_buf_pop_ret ; [L35] int s__s3__tmp__cert_req = __VERIFIER_nondet_int() ; [L36] int s__s3__tmp__new_compression = __VERIFIER_nondet_int() ; [L37] int s__s3__tmp__reuse_message = __VERIFIER_nondet_int() ; [L38] int s__s3__tmp__new_cipher = __VERIFIER_nondet_int() ; [L39] int s__s3__tmp__new_cipher__algorithms = __VERIFIER_nondet_int() ; [L40] int s__s3__tmp__next_state___0 ; [L41] int s__s3__tmp__new_compression__id = __VERIFIER_nondet_int() ; [L42] int s__session__cipher ; [L43] int s__session__compress_meth ; [L44] int buf ; [L45] unsigned long tmp ; [L46] unsigned long l ; [L47] int num1 = __VERIFIER_nondet_int() ; [L48] int cb ; [L49] int ret ; [L50] int new_state ; [L51] int state ; [L52] int skip ; [L53] int tmp___0 ; [L54] int tmp___1 = __VERIFIER_nondet_int() ; [L55] int tmp___2 = __VERIFIER_nondet_int() ; [L56] int tmp___3 = __VERIFIER_nondet_int() ; [L57] int tmp___4 = __VERIFIER_nondet_int() ; [L58] int tmp___5 = __VERIFIER_nondet_int() ; [L59] int tmp___6 = __VERIFIER_nondet_int() ; [L60] int tmp___7 = __VERIFIER_nondet_int() ; [L61] int tmp___8 = __VERIFIER_nondet_int() ; [L62] int tmp___9 = __VERIFIER_nondet_int() ; [L63] int blastFlag ; [L64] int __cil_tmp55 ; [L65] void *__cil_tmp56 ; [L66] unsigned long __cil_tmp57 ; [L67] unsigned long __cil_tmp58 = __VERIFIER_nondet_ulong() ; [L68] void *__cil_tmp59 ; [L69] unsigned long __cil_tmp60 ; [L70] unsigned long __cil_tmp61 ; [L71] unsigned long __cil_tmp62 ; [L72] unsigned long __cil_tmp63 ; [L73] unsigned long __cil_tmp64 ; [L74] long __cil_tmp65 = __VERIFIER_nondet_long() ; [L75] long __cil_tmp66 ; [L76] long __cil_tmp67 ; [L77] long __cil_tmp68 ; [L78] long __cil_tmp69 ; [L79] long __cil_tmp70 = __VERIFIER_nondet_long() ; [L80] long __cil_tmp71 ; [L81] long __cil_tmp72 ; [L82] long __cil_tmp73 ; [L83] long __cil_tmp74 ; [L87] s__state = initial_state [L88] blastFlag = 0 [L89] tmp = __VERIFIER_nondet_int() [L90] cb = 0 [L91] ret = -1 [L92] skip = 0 [L93] tmp___0 = 0 [L94] COND TRUE s__info_callback != 0 [L95] cb = s__info_callback [L101] s__in_handshake ++ [L102] COND FALSE !(tmp___1 + 12288) [L108] COND TRUE 1 [L110] state = s__state [L111] COND TRUE s__state == 12292 [L213] s__new_session = 1 [L214] s__state = 4096 [L215] s__ctx__stats__sess_connect_renegotiate ++ [L220] s__server = 0 [L221] COND TRUE cb != 0 [L225] __cil_tmp55 = s__version + 65280 [L226] COND FALSE !(__cil_tmp55 != 768) [L231] s__type = 4096 [L233] __cil_tmp56 = (void *)0 [L234] __cil_tmp57 = (unsigned long )__cil_tmp56 [L235] __cil_tmp58 = (unsigned long )s__init_buf___0 [L236] COND FALSE !(__cil_tmp58 == __cil_tmp57) [L254] COND FALSE !(! tmp___4) [L258] COND FALSE !(! tmp___5) [L262] s__state = 4368 [L263] s__ctx__stats__sess_connect ++ [L264] s__init_num = 0 [L545] COND FALSE !(! s__s3__tmp__reuse_message) [L562] skip = 0 [L108] COND TRUE 1 [L110] state = s__state [L111] COND FALSE !(s__state == 12292) [L114] COND FALSE !(s__state == 16384) [L117] COND FALSE !(s__state == 4096) [L120] COND FALSE !(s__state == 20480) [L123] COND FALSE !(s__state == 4099) [L126] COND TRUE s__state == 4368 [L268] s__shutdown = 0 [L269] ret = __VERIFIER_nondet_int() [L270] COND TRUE blastFlag == 0 [L271] blastFlag = 1 [L273] COND FALSE !(ret <= 0) [L276] s__state = 4384 [L277] s__init_num = 0 [L279] __cil_tmp62 = (unsigned long )s__wbio [L280] __cil_tmp63 = (unsigned long )s__bbio [L281] COND TRUE __cil_tmp63 != __cil_tmp62 [L545] COND FALSE !(! s__s3__tmp__reuse_message) [L562] skip = 0 [L108] COND TRUE 1 [L110] state = s__state [L111] COND FALSE !(s__state == 12292) [L114] COND FALSE !(s__state == 16384) [L117] COND FALSE !(s__state == 4096) [L120] COND FALSE !(s__state == 20480) [L123] COND FALSE !(s__state == 4099) [L126] COND FALSE !(s__state == 4368) [L129] COND FALSE !(s__state == 4369) [L132] COND TRUE s__state == 4384 [L288] ret = __VERIFIER_nondet_int() [L289] COND TRUE blastFlag == 1 [L290] blastFlag = 2 [L296] COND FALSE !(ret <= 0) [L299] COND FALSE !(\read(s__hit)) [L302] s__state = 4400 [L304] s__init_num = 0 [L545] COND FALSE !(! s__s3__tmp__reuse_message) [L562] skip = 0 [L108] COND TRUE 1 [L110] state = s__state [L111] COND FALSE !(s__state == 12292) [L114] COND FALSE !(s__state == 16384) [L117] COND FALSE !(s__state == 4096) [L120] COND FALSE !(s__state == 20480) [L123] COND FALSE !(s__state == 4099) [L126] COND FALSE !(s__state == 4368) [L129] COND FALSE !(s__state == 4369) [L132] COND FALSE !(s__state == 4384) [L135] COND FALSE !(s__state == 4385) [L138] COND TRUE s__state == 4400 [L309] __cil_tmp64 = (unsigned long )s__s3__tmp__new_cipher__algorithms [L310] COND FALSE !(__cil_tmp64 + 256UL) [L313] ret = __VERIFIER_nondet_int() [L314] COND TRUE blastFlag == 2 [L315] blastFlag = 3 [L317] COND FALSE !(ret <= 0) [L322] s__state = 4416 [L323] s__init_num = 0 [L545] COND FALSE !(! s__s3__tmp__reuse_message) [L562] skip = 0 [L108] COND TRUE 1 [L110] state = s__state [L111] COND FALSE !(s__state == 12292) [L114] COND FALSE !(s__state == 16384) [L117] COND FALSE !(s__state == 4096) [L120] COND FALSE !(s__state == 20480) [L123] COND FALSE !(s__state == 4099) [L126] COND FALSE !(s__state == 4368) [L129] COND FALSE !(s__state == 4369) [L132] COND FALSE !(s__state == 4384) [L135] COND FALSE !(s__state == 4385) [L138] COND FALSE !(s__state == 4400) [L141] COND FALSE !(s__state == 4401) [L144] COND TRUE s__state == 4416 [L327] ret = __VERIFIER_nondet_int() [L328] COND TRUE blastFlag == 3 [L329] blastFlag = 4 [L331] COND FALSE !(ret <= 0) [L334] s__state = 4432 [L335] s__init_num = 0 [L336] COND FALSE !(! tmp___6) [L545] COND FALSE !(! s__s3__tmp__reuse_message) [L562] skip = 0 [L108] COND TRUE 1 [L110] state = s__state [L111] COND FALSE !(s__state == 12292) [L114] COND FALSE !(s__state == 16384) [L117] COND FALSE !(s__state == 4096) [L120] COND FALSE !(s__state == 20480) [L123] COND FALSE !(s__state == 4099) [L126] COND FALSE !(s__state == 4368) [L129] COND FALSE !(s__state == 4369) [L132] COND FALSE !(s__state == 4384) [L135] COND FALSE !(s__state == 4385) [L138] COND FALSE !(s__state == 4400) [L141] COND FALSE !(s__state == 4401) [L144] COND FALSE !(s__state == 4416) [L147] COND FALSE !(s__state == 4417) [L150] COND TRUE s__state == 4432 [L343] ret = __VERIFIER_nondet_int() [L344] COND TRUE blastFlag == 4 [L573] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 414 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 24.6s, OverallIterations: 22, TraceHistogramMax: 6, AutomataDifference: 13.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 10117 SDtfs, 6107 SDslu, 10369 SDs, 0 SdLazy, 2304 SolverSat, 326 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 2.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 140 GetRequests, 93 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=7477occurred in iteration=21, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 6.9s AutomataMinimizationTime, 21 MinimizatonAttempts, 8171 StatesRemovedByMinimization, 17 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: No data available, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...