/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_2.cil-1.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-267fbe0 [2020-07-17 13:17:22,033 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-17 13:17:22,036 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-17 13:17:22,054 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-17 13:17:22,055 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-17 13:17:22,056 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-17 13:17:22,057 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-17 13:17:22,059 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-17 13:17:22,061 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-17 13:17:22,062 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-17 13:17:22,063 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-17 13:17:22,064 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-17 13:17:22,065 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-17 13:17:22,066 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-17 13:17:22,067 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-17 13:17:22,068 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-17 13:17:22,069 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-17 13:17:22,070 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-17 13:17:22,072 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-17 13:17:22,074 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-17 13:17:22,076 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-17 13:17:22,077 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-17 13:17:22,078 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-17 13:17:22,079 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-17 13:17:22,081 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-07-17 13:17:22,090 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-17 13:17:22,091 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-17 13:17:22,091 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-17 13:17:22,092 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2020-07-17 13:17:22,102 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-17 13:17:22,102 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-17 13:17:22,103 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-17 13:17:22,104 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-17 13:17:22,104 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-17 13:17:22,104 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-17 13:17:22,104 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-17 13:17:22,104 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-17 13:17:22,105 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-17 13:17:22,105 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-17 13:17:22,105 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-17 13:17:22,105 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-17 13:17:22,105 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-17 13:17:22,106 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-17 13:17:22,106 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-17 13:17:22,106 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-07-17 13:17:22,106 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-17 13:17:22,106 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-17 13:17:22,107 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-17 13:17:22,107 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-17 13:17:22,107 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-07-17 13:17:22,107 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-17 13:17:22,107 INFO L138 SettingsManager]: * Use separate solver for trace checks=false [2020-07-17 13:17:22,389 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-17 13:17:22,402 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-17 13:17:22,406 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-17 13:17:22,408 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-17 13:17:22,408 INFO L275 PluginConnector]: CDTParser initialized [2020-07-17 13:17:22,409 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ssh-simplified/s3_clnt_2.cil-1.c [2020-07-17 13:17:22,490 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/54a723793/dafd389681964a34be66bcf9c99390df/FLAGf1bbf4d54 [2020-07-17 13:17:23,053 INFO L306 CDTParser]: Found 1 translation units. [2020-07-17 13:17:23,054 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ssh-simplified/s3_clnt_2.cil-1.c [2020-07-17 13:17:23,075 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/54a723793/dafd389681964a34be66bcf9c99390df/FLAGf1bbf4d54 [2020-07-17 13:17:23,374 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/54a723793/dafd389681964a34be66bcf9c99390df [2020-07-17 13:17:23,384 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-17 13:17:23,387 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-17 13:17:23,389 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-17 13:17:23,389 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-17 13:17:23,393 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-17 13:17:23,394 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.07 01:17:23" (1/1) ... [2020-07-17 13:17:23,397 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@78645f97 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 01:17:23, skipping insertion in model container [2020-07-17 13:17:23,397 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.07 01:17:23" (1/1) ... [2020-07-17 13:17:23,405 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-17 13:17:23,447 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-17 13:17:23,721 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-17 13:17:23,725 INFO L203 MainTranslator]: Completed pre-run [2020-07-17 13:17:23,912 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-17 13:17:23,925 INFO L208 MainTranslator]: Completed translation [2020-07-17 13:17:23,925 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 01:17:23 WrapperNode [2020-07-17 13:17:23,925 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-17 13:17:23,926 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-17 13:17:23,926 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-17 13:17:23,926 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-17 13:17:23,939 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 01:17:23" (1/1) ... [2020-07-17 13:17:23,939 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 01:17:23" (1/1) ... [2020-07-17 13:17:23,948 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 01:17:23" (1/1) ... [2020-07-17 13:17:23,949 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 01:17:23" (1/1) ... [2020-07-17 13:17:23,961 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 01:17:23" (1/1) ... [2020-07-17 13:17:23,974 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 01:17:23" (1/1) ... [2020-07-17 13:17:23,977 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 01:17:23" (1/1) ... [2020-07-17 13:17:23,982 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-17 13:17:23,982 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-17 13:17:23,983 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-17 13:17:23,983 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-17 13:17:23,984 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 01:17:23" (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 [2020-07-17 13:17:24,056 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-17 13:17:24,056 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-17 13:17:24,057 INFO L138 BoogieDeclarations]: Found implementation of procedure ssl3_connect [2020-07-17 13:17:24,057 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-17 13:17:24,057 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-17 13:17:24,057 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-07-17 13:17:24,057 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-07-17 13:17:24,057 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_long [2020-07-17 13:17:24,058 INFO L130 BoogieDeclarations]: Found specification of procedure ssl3_connect [2020-07-17 13:17:24,058 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-17 13:17:24,058 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-17 13:17:24,058 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-17 13:17:24,280 WARN L775 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-07-17 13:17:24,935 INFO L728 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##85: assume !false; [2020-07-17 13:17:24,935 INFO L728 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##84: assume false; [2020-07-17 13:17:24,970 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-17 13:17:24,971 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-07-17 13:17:24,984 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.07 01:17:24 BoogieIcfgContainer [2020-07-17 13:17:24,985 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-17 13:17:24,987 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-17 13:17:24,988 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-17 13:17:24,992 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-17 13:17:24,995 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.07 01:17:23" (1/3) ... [2020-07-17 13:17:24,996 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@90e2f86 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.07 01:17:24, skipping insertion in model container [2020-07-17 13:17:24,996 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 01:17:23" (2/3) ... [2020-07-17 13:17:24,997 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@90e2f86 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.07 01:17:24, skipping insertion in model container [2020-07-17 13:17:24,997 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.07 01:17:24" (3/3) ... [2020-07-17 13:17:25,008 INFO L109 eAbstractionObserver]: Analyzing ICFG s3_clnt_2.cil-1.c [2020-07-17 13:17:25,020 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-07-17 13:17:25,033 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-17 13:17:25,049 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-17 13:17:25,075 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-17 13:17:25,076 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-17 13:17:25,076 INFO L377 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2020-07-17 13:17:25,076 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-17 13:17:25,076 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-17 13:17:25,077 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-17 13:17:25,077 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-17 13:17:25,077 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-17 13:17:25,099 INFO L276 IsEmpty]: Start isEmpty. Operand 385 states. [2020-07-17 13:17:25,121 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2020-07-17 13:17:25,122 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 13:17:25,123 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] [2020-07-17 13:17:25,124 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 13:17:25,129 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 13:17:25,130 INFO L82 PathProgramCache]: Analyzing trace with hash 1688119681, now seen corresponding path program 1 times [2020-07-17 13:17:25,137 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-17 13:17:25,138 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [620742341] [2020-07-17 13:17:25,138 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 13:17:25,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:17:25,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:17:25,695 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-17 13:17:25,701 INFO L192 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-17 13:17:25,703 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [620742341] [2020-07-17 13:17:25,705 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-17 13:17:25,706 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-07-17 13:17:25,706 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [279948478] [2020-07-17 13:17:25,712 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-07-17 13:17:25,712 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-17 13:17:25,728 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-07-17 13:17:25,729 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-07-17 13:17:25,731 INFO L87 Difference]: Start difference. First operand 385 states. Second operand 6 states. [2020-07-17 13:17:26,173 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 13:17:26,174 INFO L93 Difference]: Finished difference Result 689 states and 904 transitions. [2020-07-17 13:17:26,174 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-07-17 13:17:26,176 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 161 [2020-07-17 13:17:26,177 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 13:17:26,194 INFO L225 Difference]: With dead ends: 689 [2020-07-17 13:17:26,194 INFO L226 Difference]: Without dead ends: 364 [2020-07-17 13:17:26,201 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-07-17 13:17:26,223 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 364 states. [2020-07-17 13:17:26,285 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 364 to 349. [2020-07-17 13:17:26,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 349 states. [2020-07-17 13:17:26,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 349 states to 349 states and 408 transitions. [2020-07-17 13:17:26,292 INFO L78 Accepts]: Start accepts. Automaton has 349 states and 408 transitions. Word has length 161 [2020-07-17 13:17:26,293 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 13:17:26,293 INFO L479 AbstractCegarLoop]: Abstraction has 349 states and 408 transitions. [2020-07-17 13:17:26,293 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-07-17 13:17:26,293 INFO L276 IsEmpty]: Start isEmpty. Operand 349 states and 408 transitions. [2020-07-17 13:17:26,298 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2020-07-17 13:17:26,298 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 13:17:26,299 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] [2020-07-17 13:17:26,299 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-07-17 13:17:26,299 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 13:17:26,300 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 13:17:26,300 INFO L82 PathProgramCache]: Analyzing trace with hash 1044760098, now seen corresponding path program 1 times [2020-07-17 13:17:26,300 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-17 13:17:26,300 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [500717114] [2020-07-17 13:17:26,301 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 13:17:26,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:17:26,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:17:26,583 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-17 13:17:26,585 INFO L192 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-17 13:17:26,586 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [500717114] [2020-07-17 13:17:26,586 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-17 13:17:26,587 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-07-17 13:17:26,587 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1924898815] [2020-07-17 13:17:26,589 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-07-17 13:17:26,589 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-17 13:17:26,591 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-07-17 13:17:26,592 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-07-17 13:17:26,592 INFO L87 Difference]: Start difference. First operand 349 states and 408 transitions. Second operand 6 states. [2020-07-17 13:17:26,963 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 13:17:26,964 INFO L93 Difference]: Finished difference Result 610 states and 760 transitions. [2020-07-17 13:17:26,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-07-17 13:17:26,964 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 180 [2020-07-17 13:17:26,965 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 13:17:26,970 INFO L225 Difference]: With dead ends: 610 [2020-07-17 13:17:26,971 INFO L226 Difference]: Without dead ends: 407 [2020-07-17 13:17:26,973 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 39 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-07-17 13:17:26,977 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 407 states. [2020-07-17 13:17:27,043 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 407 to 362. [2020-07-17 13:17:27,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 362 states. [2020-07-17 13:17:27,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 362 states to 362 states and 426 transitions. [2020-07-17 13:17:27,045 INFO L78 Accepts]: Start accepts. Automaton has 362 states and 426 transitions. Word has length 180 [2020-07-17 13:17:27,047 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 13:17:27,047 INFO L479 AbstractCegarLoop]: Abstraction has 362 states and 426 transitions. [2020-07-17 13:17:27,047 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-07-17 13:17:27,048 INFO L276 IsEmpty]: Start isEmpty. Operand 362 states and 426 transitions. [2020-07-17 13:17:27,055 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2020-07-17 13:17:27,056 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 13:17:27,056 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] [2020-07-17 13:17:27,057 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-07-17 13:17:27,057 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 13:17:27,057 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 13:17:27,058 INFO L82 PathProgramCache]: Analyzing trace with hash -975331194, now seen corresponding path program 1 times [2020-07-17 13:17:27,058 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-17 13:17:27,059 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2035570291] [2020-07-17 13:17:27,059 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 13:17:27,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:17:27,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:17:27,274 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-17 13:17:27,276 INFO L192 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-17 13:17:27,277 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2035570291] [2020-07-17 13:17:27,277 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-17 13:17:27,277 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-17 13:17:27,278 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [662580899] [2020-07-17 13:17:27,278 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-17 13:17:27,279 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-17 13:17:27,279 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-17 13:17:27,280 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-17 13:17:27,280 INFO L87 Difference]: Start difference. First operand 362 states and 426 transitions. Second operand 3 states. [2020-07-17 13:17:27,455 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 13:17:27,455 INFO L93 Difference]: Finished difference Result 608 states and 743 transitions. [2020-07-17 13:17:27,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-17 13:17:27,456 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 184 [2020-07-17 13:17:27,457 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 13:17:27,462 INFO L225 Difference]: With dead ends: 608 [2020-07-17 13:17:27,462 INFO L226 Difference]: Without dead ends: 392 [2020-07-17 13:17:27,465 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-17 13:17:27,466 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 392 states. [2020-07-17 13:17:27,521 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 392 to 380. [2020-07-17 13:17:27,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 380 states. [2020-07-17 13:17:27,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 380 states to 380 states and 449 transitions. [2020-07-17 13:17:27,523 INFO L78 Accepts]: Start accepts. Automaton has 380 states and 449 transitions. Word has length 184 [2020-07-17 13:17:27,524 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 13:17:27,525 INFO L479 AbstractCegarLoop]: Abstraction has 380 states and 449 transitions. [2020-07-17 13:17:27,525 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-17 13:17:27,525 INFO L276 IsEmpty]: Start isEmpty. Operand 380 states and 449 transitions. [2020-07-17 13:17:27,528 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 192 [2020-07-17 13:17:27,528 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 13:17:27,529 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] [2020-07-17 13:17:27,529 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-07-17 13:17:27,530 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 13:17:27,530 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 13:17:27,530 INFO L82 PathProgramCache]: Analyzing trace with hash 103747241, now seen corresponding path program 1 times [2020-07-17 13:17:27,531 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-17 13:17:27,531 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [552498504] [2020-07-17 13:17:27,532 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 13:17:27,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:17:27,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:17:27,707 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-17 13:17:27,709 INFO L192 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-17 13:17:27,710 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [552498504] [2020-07-17 13:17:27,710 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-17 13:17:27,710 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-17 13:17:27,710 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [894630181] [2020-07-17 13:17:27,711 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-17 13:17:27,712 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-17 13:17:27,712 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-17 13:17:27,713 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-17 13:17:27,713 INFO L87 Difference]: Start difference. First operand 380 states and 449 transitions. Second operand 3 states. [2020-07-17 13:17:27,826 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 13:17:27,826 INFO L93 Difference]: Finished difference Result 841 states and 1041 transitions. [2020-07-17 13:17:27,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-17 13:17:27,827 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 191 [2020-07-17 13:17:27,828 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 13:17:27,831 INFO L225 Difference]: With dead ends: 841 [2020-07-17 13:17:27,831 INFO L226 Difference]: Without dead ends: 607 [2020-07-17 13:17:27,833 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-17 13:17:27,835 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 607 states. [2020-07-17 13:17:27,887 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 607 to 607. [2020-07-17 13:17:27,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 607 states. [2020-07-17 13:17:27,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 607 states to 607 states and 737 transitions. [2020-07-17 13:17:27,891 INFO L78 Accepts]: Start accepts. Automaton has 607 states and 737 transitions. Word has length 191 [2020-07-17 13:17:27,892 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 13:17:27,892 INFO L479 AbstractCegarLoop]: Abstraction has 607 states and 737 transitions. [2020-07-17 13:17:27,892 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-17 13:17:27,892 INFO L276 IsEmpty]: Start isEmpty. Operand 607 states and 737 transitions. [2020-07-17 13:17:27,895 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2020-07-17 13:17:27,896 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 13:17:27,896 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] [2020-07-17 13:17:27,896 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-07-17 13:17:27,896 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 13:17:27,897 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 13:17:27,897 INFO L82 PathProgramCache]: Analyzing trace with hash -574346418, now seen corresponding path program 1 times [2020-07-17 13:17:27,897 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-17 13:17:27,897 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1554826084] [2020-07-17 13:17:27,898 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 13:17:27,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:17:27,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:17:28,001 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-17 13:17:28,002 INFO L192 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-17 13:17:28,003 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1554826084] [2020-07-17 13:17:28,003 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-17 13:17:28,003 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-17 13:17:28,004 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1974282135] [2020-07-17 13:17:28,004 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-17 13:17:28,004 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-17 13:17:28,005 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-17 13:17:28,005 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-17 13:17:28,005 INFO L87 Difference]: Start difference. First operand 607 states and 737 transitions. Second operand 3 states. [2020-07-17 13:17:28,254 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 13:17:28,254 INFO L93 Difference]: Finished difference Result 1129 states and 1410 transitions. [2020-07-17 13:17:28,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-17 13:17:28,255 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 204 [2020-07-17 13:17:28,256 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 13:17:28,262 INFO L225 Difference]: With dead ends: 1129 [2020-07-17 13:17:28,263 INFO L226 Difference]: Without dead ends: 668 [2020-07-17 13:17:28,265 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 14 SyntacticMatches, 1 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-17 13:17:28,268 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 668 states. [2020-07-17 13:17:28,357 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 668 to 647. [2020-07-17 13:17:28,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 647 states. [2020-07-17 13:17:28,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 647 states to 647 states and 787 transitions. [2020-07-17 13:17:28,403 INFO L78 Accepts]: Start accepts. Automaton has 647 states and 787 transitions. Word has length 204 [2020-07-17 13:17:28,404 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 13:17:28,404 INFO L479 AbstractCegarLoop]: Abstraction has 647 states and 787 transitions. [2020-07-17 13:17:28,405 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-17 13:17:28,405 INFO L276 IsEmpty]: Start isEmpty. Operand 647 states and 787 transitions. [2020-07-17 13:17:28,411 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 212 [2020-07-17 13:17:28,411 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 13:17:28,412 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] [2020-07-17 13:17:28,412 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-07-17 13:17:28,413 INFO L427 AbstractCegarLoop]: === Iteration 6 === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 13:17:28,414 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 13:17:28,414 INFO L82 PathProgramCache]: Analyzing trace with hash -375106847, now seen corresponding path program 1 times [2020-07-17 13:17:28,415 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-17 13:17:28,415 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [373732075] [2020-07-17 13:17:28,415 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 13:17:28,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:17:28,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:17:28,574 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-17 13:17:28,576 INFO L192 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-17 13:17:28,576 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [373732075] [2020-07-17 13:17:28,578 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-17 13:17:28,578 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-17 13:17:28,579 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [919903983] [2020-07-17 13:17:28,580 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-17 13:17:28,580 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-17 13:17:28,580 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-17 13:17:28,581 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-17 13:17:28,581 INFO L87 Difference]: Start difference. First operand 647 states and 787 transitions. Second operand 3 states. [2020-07-17 13:17:28,754 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 13:17:28,754 INFO L93 Difference]: Finished difference Result 1579 states and 1959 transitions. [2020-07-17 13:17:28,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-17 13:17:28,755 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 211 [2020-07-17 13:17:28,756 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 13:17:28,762 INFO L225 Difference]: With dead ends: 1579 [2020-07-17 13:17:28,762 INFO L226 Difference]: Without dead ends: 1078 [2020-07-17 13:17:28,764 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-17 13:17:28,767 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1078 states. [2020-07-17 13:17:28,901 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1078 to 1076. [2020-07-17 13:17:28,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1076 states. [2020-07-17 13:17:28,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1076 states to 1076 states and 1313 transitions. [2020-07-17 13:17:28,914 INFO L78 Accepts]: Start accepts. Automaton has 1076 states and 1313 transitions. Word has length 211 [2020-07-17 13:17:28,917 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 13:17:28,917 INFO L479 AbstractCegarLoop]: Abstraction has 1076 states and 1313 transitions. [2020-07-17 13:17:28,917 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-17 13:17:28,926 INFO L276 IsEmpty]: Start isEmpty. Operand 1076 states and 1313 transitions. [2020-07-17 13:17:28,936 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 213 [2020-07-17 13:17:28,937 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 13:17:28,937 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] [2020-07-17 13:17:28,938 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-07-17 13:17:28,938 INFO L427 AbstractCegarLoop]: === Iteration 7 === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 13:17:28,938 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 13:17:28,939 INFO L82 PathProgramCache]: Analyzing trace with hash 743106501, now seen corresponding path program 1 times [2020-07-17 13:17:28,939 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-17 13:17:28,941 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1376907938] [2020-07-17 13:17:28,941 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 13:17:28,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:17:29,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:17:29,161 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-17 13:17:29,163 INFO L192 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-17 13:17:29,164 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1376907938] [2020-07-17 13:17:29,164 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-17 13:17:29,165 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-17 13:17:29,165 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [131435762] [2020-07-17 13:17:29,166 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-17 13:17:29,166 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-17 13:17:29,167 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-17 13:17:29,168 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-17 13:17:29,168 INFO L87 Difference]: Start difference. First operand 1076 states and 1313 transitions. Second operand 3 states. [2020-07-17 13:17:29,364 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 13:17:29,364 INFO L93 Difference]: Finished difference Result 2024 states and 2498 transitions. [2020-07-17 13:17:29,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-17 13:17:29,365 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 212 [2020-07-17 13:17:29,366 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 13:17:29,375 INFO L225 Difference]: With dead ends: 2024 [2020-07-17 13:17:29,375 INFO L226 Difference]: Without dead ends: 1094 [2020-07-17 13:17:29,378 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-17 13:17:29,381 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1094 states. [2020-07-17 13:17:29,543 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1094 to 1084. [2020-07-17 13:17:29,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1084 states. [2020-07-17 13:17:29,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1084 states to 1084 states and 1317 transitions. [2020-07-17 13:17:29,551 INFO L78 Accepts]: Start accepts. Automaton has 1084 states and 1317 transitions. Word has length 212 [2020-07-17 13:17:29,552 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 13:17:29,552 INFO L479 AbstractCegarLoop]: Abstraction has 1084 states and 1317 transitions. [2020-07-17 13:17:29,552 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-17 13:17:29,552 INFO L276 IsEmpty]: Start isEmpty. Operand 1084 states and 1317 transitions. [2020-07-17 13:17:29,560 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 215 [2020-07-17 13:17:29,560 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 13:17:29,561 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] [2020-07-17 13:17:29,561 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-07-17 13:17:29,561 INFO L427 AbstractCegarLoop]: === Iteration 8 === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 13:17:29,562 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 13:17:29,562 INFO L82 PathProgramCache]: Analyzing trace with hash -1288323979, now seen corresponding path program 1 times [2020-07-17 13:17:29,563 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-17 13:17:29,565 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1258407011] [2020-07-17 13:17:29,565 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 13:17:29,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:17:29,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:17:29,741 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-17 13:17:29,743 INFO L192 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-17 13:17:29,744 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1258407011] [2020-07-17 13:17:29,744 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-17 13:17:29,745 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-17 13:17:29,745 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [751367377] [2020-07-17 13:17:29,746 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-17 13:17:29,746 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-17 13:17:29,747 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-17 13:17:29,748 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-17 13:17:29,748 INFO L87 Difference]: Start difference. First operand 1084 states and 1317 transitions. Second operand 3 states. [2020-07-17 13:17:30,048 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 13:17:30,048 INFO L93 Difference]: Finished difference Result 2946 states and 3629 transitions. [2020-07-17 13:17:30,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-17 13:17:30,049 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 214 [2020-07-17 13:17:30,050 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 13:17:30,060 INFO L225 Difference]: With dead ends: 2946 [2020-07-17 13:17:30,060 INFO L226 Difference]: Without dead ends: 2008 [2020-07-17 13:17:30,063 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-17 13:17:30,066 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2008 states. [2020-07-17 13:17:30,278 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2008 to 2006. [2020-07-17 13:17:30,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2006 states. [2020-07-17 13:17:30,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2006 states to 2006 states and 2449 transitions. [2020-07-17 13:17:30,288 INFO L78 Accepts]: Start accepts. Automaton has 2006 states and 2449 transitions. Word has length 214 [2020-07-17 13:17:30,289 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 13:17:30,289 INFO L479 AbstractCegarLoop]: Abstraction has 2006 states and 2449 transitions. [2020-07-17 13:17:30,289 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-17 13:17:30,289 INFO L276 IsEmpty]: Start isEmpty. Operand 2006 states and 2449 transitions. [2020-07-17 13:17:30,294 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 215 [2020-07-17 13:17:30,294 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 13:17:30,294 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] [2020-07-17 13:17:30,295 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-07-17 13:17:30,295 INFO L427 AbstractCegarLoop]: === Iteration 9 === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 13:17:30,295 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 13:17:30,295 INFO L82 PathProgramCache]: Analyzing trace with hash 1320463479, now seen corresponding path program 1 times [2020-07-17 13:17:30,296 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-17 13:17:30,296 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1050622944] [2020-07-17 13:17:30,296 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 13:17:30,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:17:30,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:17:30,376 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-17 13:17:30,377 INFO L192 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-17 13:17:30,377 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1050622944] [2020-07-17 13:17:30,377 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-17 13:17:30,378 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-17 13:17:30,378 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [116523673] [2020-07-17 13:17:30,378 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-17 13:17:30,379 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-17 13:17:30,379 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-17 13:17:30,379 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-17 13:17:30,379 INFO L87 Difference]: Start difference. First operand 2006 states and 2449 transitions. Second operand 3 states. [2020-07-17 13:17:30,701 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 13:17:30,702 INFO L93 Difference]: Finished difference Result 2961 states and 3623 transitions. [2020-07-17 13:17:30,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-17 13:17:30,702 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 214 [2020-07-17 13:17:30,703 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 13:17:30,715 INFO L225 Difference]: With dead ends: 2961 [2020-07-17 13:17:30,715 INFO L226 Difference]: Without dead ends: 2023 [2020-07-17 13:17:30,718 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-17 13:17:30,721 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2023 states. [2020-07-17 13:17:30,983 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2023 to 2021. [2020-07-17 13:17:30,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2021 states. [2020-07-17 13:17:30,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2021 states to 2021 states and 2455 transitions. [2020-07-17 13:17:30,993 INFO L78 Accepts]: Start accepts. Automaton has 2021 states and 2455 transitions. Word has length 214 [2020-07-17 13:17:30,994 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 13:17:30,994 INFO L479 AbstractCegarLoop]: Abstraction has 2021 states and 2455 transitions. [2020-07-17 13:17:30,994 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-17 13:17:30,994 INFO L276 IsEmpty]: Start isEmpty. Operand 2021 states and 2455 transitions. [2020-07-17 13:17:31,000 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 216 [2020-07-17 13:17:31,000 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 13:17:31,005 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] [2020-07-17 13:17:31,005 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-07-17 13:17:31,005 INFO L427 AbstractCegarLoop]: === Iteration 10 === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 13:17:31,005 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 13:17:31,006 INFO L82 PathProgramCache]: Analyzing trace with hash -955395695, now seen corresponding path program 1 times [2020-07-17 13:17:31,008 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-17 13:17:31,009 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1173906134] [2020-07-17 13:17:31,009 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 13:17:31,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:17:31,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:17:31,099 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-17 13:17:31,101 INFO L192 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-17 13:17:31,101 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1173906134] [2020-07-17 13:17:31,101 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-17 13:17:31,102 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-17 13:17:31,102 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1253555075] [2020-07-17 13:17:31,102 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-17 13:17:31,103 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-17 13:17:31,103 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-17 13:17:31,103 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-17 13:17:31,103 INFO L87 Difference]: Start difference. First operand 2021 states and 2455 transitions. Second operand 3 states. [2020-07-17 13:17:31,550 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 13:17:31,550 INFO L93 Difference]: Finished difference Result 3881 states and 4762 transitions. [2020-07-17 13:17:31,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-17 13:17:31,551 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 215 [2020-07-17 13:17:31,552 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 13:17:31,566 INFO L225 Difference]: With dead ends: 3881 [2020-07-17 13:17:31,566 INFO L226 Difference]: Without dead ends: 2940 [2020-07-17 13:17:31,569 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-17 13:17:31,573 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2940 states. [2020-07-17 13:17:31,868 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2940 to 2940. [2020-07-17 13:17:31,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2940 states. [2020-07-17 13:17:31,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2940 states to 2940 states and 3582 transitions. [2020-07-17 13:17:31,882 INFO L78 Accepts]: Start accepts. Automaton has 2940 states and 3582 transitions. Word has length 215 [2020-07-17 13:17:31,883 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 13:17:31,883 INFO L479 AbstractCegarLoop]: Abstraction has 2940 states and 3582 transitions. [2020-07-17 13:17:31,883 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-17 13:17:31,883 INFO L276 IsEmpty]: Start isEmpty. Operand 2940 states and 3582 transitions. [2020-07-17 13:17:31,889 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 226 [2020-07-17 13:17:31,890 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 13:17:31,890 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] [2020-07-17 13:17:31,890 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-07-17 13:17:31,891 INFO L427 AbstractCegarLoop]: === Iteration 11 === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 13:17:31,891 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 13:17:31,891 INFO L82 PathProgramCache]: Analyzing trace with hash -2117708685, now seen corresponding path program 1 times [2020-07-17 13:17:31,891 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-17 13:17:31,892 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [163517781] [2020-07-17 13:17:31,892 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 13:17:31,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:17:31,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:17:31,983 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-17 13:17:31,985 INFO L192 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-17 13:17:31,986 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [163517781] [2020-07-17 13:17:31,986 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-17 13:17:31,986 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-17 13:17:31,987 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1318267517] [2020-07-17 13:17:31,987 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-17 13:17:31,987 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-17 13:17:31,988 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-17 13:17:31,988 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-17 13:17:31,988 INFO L87 Difference]: Start difference. First operand 2940 states and 3582 transitions. Second operand 3 states. [2020-07-17 13:17:32,584 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 13:17:32,584 INFO L93 Difference]: Finished difference Result 6394 states and 8046 transitions. [2020-07-17 13:17:32,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-17 13:17:32,585 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 225 [2020-07-17 13:17:32,586 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 13:17:32,606 INFO L225 Difference]: With dead ends: 6394 [2020-07-17 13:17:32,606 INFO L226 Difference]: Without dead ends: 3603 [2020-07-17 13:17:32,613 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-17 13:17:32,618 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3603 states. [2020-07-17 13:17:32,889 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3603 to 3417. [2020-07-17 13:17:32,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3417 states. [2020-07-17 13:17:32,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3417 states to 3417 states and 4098 transitions. [2020-07-17 13:17:32,901 INFO L78 Accepts]: Start accepts. Automaton has 3417 states and 4098 transitions. Word has length 225 [2020-07-17 13:17:32,902 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 13:17:32,902 INFO L479 AbstractCegarLoop]: Abstraction has 3417 states and 4098 transitions. [2020-07-17 13:17:32,902 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-17 13:17:32,902 INFO L276 IsEmpty]: Start isEmpty. Operand 3417 states and 4098 transitions. [2020-07-17 13:17:32,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 226 [2020-07-17 13:17:32,909 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 13:17:32,909 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] [2020-07-17 13:17:32,910 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-07-17 13:17:32,910 INFO L427 AbstractCegarLoop]: === Iteration 12 === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 13:17:32,910 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 13:17:32,911 INFO L82 PathProgramCache]: Analyzing trace with hash 333657299, now seen corresponding path program 1 times [2020-07-17 13:17:32,911 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-17 13:17:32,911 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [113468719] [2020-07-17 13:17:32,911 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 13:17:32,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:17:32,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:17:32,994 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-17 13:17:32,997 INFO L192 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-17 13:17:32,998 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [113468719] [2020-07-17 13:17:32,998 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-17 13:17:32,999 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-17 13:17:32,999 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [249440481] [2020-07-17 13:17:32,999 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-17 13:17:33,000 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-17 13:17:33,000 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-17 13:17:33,000 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-17 13:17:33,001 INFO L87 Difference]: Start difference. First operand 3417 states and 4098 transitions. Second operand 3 states. [2020-07-17 13:17:33,545 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 13:17:33,545 INFO L93 Difference]: Finished difference Result 7010 states and 8492 transitions. [2020-07-17 13:17:33,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-17 13:17:33,546 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 225 [2020-07-17 13:17:33,546 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 13:17:33,565 INFO L225 Difference]: With dead ends: 7010 [2020-07-17 13:17:33,565 INFO L226 Difference]: Without dead ends: 3754 [2020-07-17 13:17:33,575 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 12 SyntacticMatches, 1 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-17 13:17:33,581 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3754 states. [2020-07-17 13:17:33,854 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3754 to 3630. [2020-07-17 13:17:33,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3630 states. [2020-07-17 13:17:33,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3630 states to 3630 states and 4326 transitions. [2020-07-17 13:17:33,865 INFO L78 Accepts]: Start accepts. Automaton has 3630 states and 4326 transitions. Word has length 225 [2020-07-17 13:17:33,866 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 13:17:33,866 INFO L479 AbstractCegarLoop]: Abstraction has 3630 states and 4326 transitions. [2020-07-17 13:17:33,866 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-17 13:17:33,866 INFO L276 IsEmpty]: Start isEmpty. Operand 3630 states and 4326 transitions. [2020-07-17 13:17:33,876 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 241 [2020-07-17 13:17:33,876 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 13:17:33,876 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] [2020-07-17 13:17:33,877 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-07-17 13:17:33,877 INFO L427 AbstractCegarLoop]: === Iteration 13 === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 13:17:33,877 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 13:17:33,877 INFO L82 PathProgramCache]: Analyzing trace with hash 2067308732, now seen corresponding path program 1 times [2020-07-17 13:17:33,878 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-17 13:17:33,878 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [540220462] [2020-07-17 13:17:33,878 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 13:17:33,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:17:33,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:17:33,968 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-17 13:17:33,970 INFO L192 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-17 13:17:33,970 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [540220462] [2020-07-17 13:17:33,970 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-17 13:17:33,971 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-17 13:17:33,971 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2025778752] [2020-07-17 13:17:33,971 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-17 13:17:33,972 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-17 13:17:33,972 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-17 13:17:33,972 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-17 13:17:33,972 INFO L87 Difference]: Start difference. First operand 3630 states and 4326 transitions. Second operand 3 states. [2020-07-17 13:17:34,364 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 13:17:34,364 INFO L93 Difference]: Finished difference Result 7099 states and 8504 transitions. [2020-07-17 13:17:34,364 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-17 13:17:34,365 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 240 [2020-07-17 13:17:34,365 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 13:17:34,388 INFO L225 Difference]: With dead ends: 7099 [2020-07-17 13:17:34,388 INFO L226 Difference]: Without dead ends: 4779 [2020-07-17 13:17:34,396 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-17 13:17:34,402 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4779 states. [2020-07-17 13:17:34,725 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4779 to 4779. [2020-07-17 13:17:34,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4779 states. [2020-07-17 13:17:34,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4779 states to 4779 states and 5705 transitions. [2020-07-17 13:17:34,738 INFO L78 Accepts]: Start accepts. Automaton has 4779 states and 5705 transitions. Word has length 240 [2020-07-17 13:17:34,738 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 13:17:34,738 INFO L479 AbstractCegarLoop]: Abstraction has 4779 states and 5705 transitions. [2020-07-17 13:17:34,739 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-17 13:17:34,739 INFO L276 IsEmpty]: Start isEmpty. Operand 4779 states and 5705 transitions. [2020-07-17 13:17:34,751 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 250 [2020-07-17 13:17:34,751 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 13:17:34,751 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] [2020-07-17 13:17:34,751 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-07-17 13:17:34,752 INFO L427 AbstractCegarLoop]: === Iteration 14 === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 13:17:34,752 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 13:17:34,752 INFO L82 PathProgramCache]: Analyzing trace with hash -1266606843, now seen corresponding path program 1 times [2020-07-17 13:17:34,753 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-17 13:17:34,753 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [171865628] [2020-07-17 13:17:34,753 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 13:17:34,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:17:34,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:17:34,910 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-17 13:17:34,912 INFO L192 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-17 13:17:34,913 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [171865628] [2020-07-17 13:17:34,913 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-17 13:17:34,913 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-17 13:17:34,913 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1899627667] [2020-07-17 13:17:34,914 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-17 13:17:34,914 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-17 13:17:34,915 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-17 13:17:34,915 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-17 13:17:34,915 INFO L87 Difference]: Start difference. First operand 4779 states and 5705 transitions. Second operand 3 states. [2020-07-17 13:17:35,502 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 13:17:35,503 INFO L93 Difference]: Finished difference Result 9821 states and 11850 transitions. [2020-07-17 13:17:35,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-17 13:17:35,504 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 249 [2020-07-17 13:17:35,504 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 13:17:35,528 INFO L225 Difference]: With dead ends: 9821 [2020-07-17 13:17:35,528 INFO L226 Difference]: Without dead ends: 5203 [2020-07-17 13:17:35,541 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 10 SyntacticMatches, 1 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-17 13:17:35,549 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5203 states. [2020-07-17 13:17:35,898 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5203 to 5095. [2020-07-17 13:17:35,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5095 states. [2020-07-17 13:17:35,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5095 states to 5095 states and 6041 transitions. [2020-07-17 13:17:35,909 INFO L78 Accepts]: Start accepts. Automaton has 5095 states and 6041 transitions. Word has length 249 [2020-07-17 13:17:35,909 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 13:17:35,910 INFO L479 AbstractCegarLoop]: Abstraction has 5095 states and 6041 transitions. [2020-07-17 13:17:35,910 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-17 13:17:35,910 INFO L276 IsEmpty]: Start isEmpty. Operand 5095 states and 6041 transitions. [2020-07-17 13:17:35,922 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 269 [2020-07-17 13:17:35,922 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 13:17:35,923 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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] [2020-07-17 13:17:35,923 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-07-17 13:17:35,923 INFO L427 AbstractCegarLoop]: === Iteration 15 === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 13:17:35,923 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 13:17:35,924 INFO L82 PathProgramCache]: Analyzing trace with hash 1378985242, now seen corresponding path program 1 times [2020-07-17 13:17:35,924 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-17 13:17:35,924 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1483085641] [2020-07-17 13:17:35,924 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 13:17:35,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:17:36,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:17:36,098 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-17 13:17:36,100 INFO L192 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-17 13:17:36,100 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1483085641] [2020-07-17 13:17:36,101 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-17 13:17:36,101 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-17 13:17:36,101 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [95137386] [2020-07-17 13:17:36,102 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-17 13:17:36,102 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-17 13:17:36,102 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-17 13:17:36,102 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-07-17 13:17:36,102 INFO L87 Difference]: Start difference. First operand 5095 states and 6041 transitions. Second operand 5 states. [2020-07-17 13:17:36,826 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 13:17:36,826 INFO L93 Difference]: Finished difference Result 12453 states and 15078 transitions. [2020-07-17 13:17:36,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-07-17 13:17:36,826 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 268 [2020-07-17 13:17:36,827 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 13:17:36,846 INFO L225 Difference]: With dead ends: 12453 [2020-07-17 13:17:36,846 INFO L226 Difference]: Without dead ends: 7519 [2020-07-17 13:17:36,860 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 58 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-07-17 13:17:36,870 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7519 states. [2020-07-17 13:17:37,275 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7519 to 5852. [2020-07-17 13:17:37,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5852 states. [2020-07-17 13:17:37,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5852 states to 5852 states and 6925 transitions. [2020-07-17 13:17:37,286 INFO L78 Accepts]: Start accepts. Automaton has 5852 states and 6925 transitions. Word has length 268 [2020-07-17 13:17:37,286 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 13:17:37,287 INFO L479 AbstractCegarLoop]: Abstraction has 5852 states and 6925 transitions. [2020-07-17 13:17:37,287 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-17 13:17:37,287 INFO L276 IsEmpty]: Start isEmpty. Operand 5852 states and 6925 transitions. [2020-07-17 13:17:37,299 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 272 [2020-07-17 13:17:37,299 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 13:17:37,299 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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] [2020-07-17 13:17:37,300 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-07-17 13:17:37,300 INFO L427 AbstractCegarLoop]: === Iteration 16 === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 13:17:37,300 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 13:17:37,300 INFO L82 PathProgramCache]: Analyzing trace with hash 1330691005, now seen corresponding path program 2 times [2020-07-17 13:17:37,301 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-17 13:17:37,301 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1757127278] [2020-07-17 13:17:37,301 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 13:17:37,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:17:37,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:17:37,419 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-17 13:17:37,421 INFO L192 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-17 13:17:37,421 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1757127278] [2020-07-17 13:17:37,421 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-17 13:17:37,421 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-17 13:17:37,422 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [820947266] [2020-07-17 13:17:37,422 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-17 13:17:37,422 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-17 13:17:37,423 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-17 13:17:37,423 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-07-17 13:17:37,423 INFO L87 Difference]: Start difference. First operand 5852 states and 6925 transitions. Second operand 5 states. [2020-07-17 13:17:38,117 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 13:17:38,118 INFO L93 Difference]: Finished difference Result 9945 states and 11708 transitions. [2020-07-17 13:17:38,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-07-17 13:17:38,118 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 271 [2020-07-17 13:17:38,119 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 13:17:38,134 INFO L225 Difference]: With dead ends: 9945 [2020-07-17 13:17:38,134 INFO L226 Difference]: Without dead ends: 7016 [2020-07-17 13:17:38,142 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 58 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-07-17 13:17:38,149 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7016 states. [2020-07-17 13:17:38,521 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7016 to 5852. [2020-07-17 13:17:38,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5852 states. [2020-07-17 13:17:38,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5852 states to 5852 states and 6925 transitions. [2020-07-17 13:17:38,534 INFO L78 Accepts]: Start accepts. Automaton has 5852 states and 6925 transitions. Word has length 271 [2020-07-17 13:17:38,535 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 13:17:38,535 INFO L479 AbstractCegarLoop]: Abstraction has 5852 states and 6925 transitions. [2020-07-17 13:17:38,535 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-17 13:17:38,535 INFO L276 IsEmpty]: Start isEmpty. Operand 5852 states and 6925 transitions. [2020-07-17 13:17:38,545 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 272 [2020-07-17 13:17:38,545 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 13:17:38,546 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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] [2020-07-17 13:17:38,546 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-07-17 13:17:38,546 INFO L427 AbstractCegarLoop]: === Iteration 17 === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 13:17:38,547 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 13:17:38,547 INFO L82 PathProgramCache]: Analyzing trace with hash -1857770431, now seen corresponding path program 1 times [2020-07-17 13:17:38,547 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-17 13:17:38,547 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1319952780] [2020-07-17 13:17:38,548 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 13:17:38,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:17:38,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:17:38,654 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-17 13:17:38,656 INFO L192 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-17 13:17:38,656 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1319952780] [2020-07-17 13:17:38,657 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-17 13:17:38,657 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-17 13:17:38,657 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1153809441] [2020-07-17 13:17:38,657 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-17 13:17:38,658 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-17 13:17:38,658 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-17 13:17:38,658 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-17 13:17:38,658 INFO L87 Difference]: Start difference. First operand 5852 states and 6925 transitions. Second operand 4 states. [2020-07-17 13:17:39,740 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 13:17:39,740 INFO L93 Difference]: Finished difference Result 12282 states and 14635 transitions. [2020-07-17 13:17:39,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-07-17 13:17:39,744 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 271 [2020-07-17 13:17:39,744 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 13:17:39,766 INFO L225 Difference]: With dead ends: 12282 [2020-07-17 13:17:39,767 INFO L226 Difference]: Without dead ends: 9349 [2020-07-17 13:17:39,776 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 45 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-07-17 13:17:39,787 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9349 states. [2020-07-17 13:17:40,245 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9349 to 5924. [2020-07-17 13:17:40,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5924 states. [2020-07-17 13:17:40,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5924 states to 5924 states and 7013 transitions. [2020-07-17 13:17:40,256 INFO L78 Accepts]: Start accepts. Automaton has 5924 states and 7013 transitions. Word has length 271 [2020-07-17 13:17:40,257 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 13:17:40,257 INFO L479 AbstractCegarLoop]: Abstraction has 5924 states and 7013 transitions. [2020-07-17 13:17:40,257 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-17 13:17:40,257 INFO L276 IsEmpty]: Start isEmpty. Operand 5924 states and 7013 transitions. [2020-07-17 13:17:40,267 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 272 [2020-07-17 13:17:40,267 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 13:17:40,267 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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] [2020-07-17 13:17:40,268 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-07-17 13:17:40,268 INFO L427 AbstractCegarLoop]: === Iteration 18 === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 13:17:40,268 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 13:17:40,268 INFO L82 PathProgramCache]: Analyzing trace with hash -417971039, now seen corresponding path program 3 times [2020-07-17 13:17:40,269 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-17 13:17:40,269 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1334246000] [2020-07-17 13:17:40,269 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 13:17:40,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:17:40,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:17:40,362 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-17 13:17:40,364 INFO L192 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-17 13:17:40,364 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1334246000] [2020-07-17 13:17:40,364 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-17 13:17:40,365 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-17 13:17:40,365 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [155553643] [2020-07-17 13:17:40,365 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-17 13:17:40,366 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-17 13:17:40,366 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-17 13:17:40,366 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-07-17 13:17:40,366 INFO L87 Difference]: Start difference. First operand 5924 states and 7013 transitions. Second operand 5 states. [2020-07-17 13:17:41,153 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 13:17:41,154 INFO L93 Difference]: Finished difference Result 9629 states and 11348 transitions. [2020-07-17 13:17:41,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-07-17 13:17:41,154 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 271 [2020-07-17 13:17:41,155 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 13:17:41,168 INFO L225 Difference]: With dead ends: 9629 [2020-07-17 13:17:41,168 INFO L226 Difference]: Without dead ends: 6628 [2020-07-17 13:17:41,177 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 109 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-07-17 13:17:41,184 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6628 states. [2020-07-17 13:17:41,609 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6628 to 6004. [2020-07-17 13:17:41,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6004 states. [2020-07-17 13:17:41,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6004 states to 6004 states and 7101 transitions. [2020-07-17 13:17:41,617 INFO L78 Accepts]: Start accepts. Automaton has 6004 states and 7101 transitions. Word has length 271 [2020-07-17 13:17:41,617 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 13:17:41,618 INFO L479 AbstractCegarLoop]: Abstraction has 6004 states and 7101 transitions. [2020-07-17 13:17:41,618 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-17 13:17:41,618 INFO L276 IsEmpty]: Start isEmpty. Operand 6004 states and 7101 transitions. [2020-07-17 13:17:41,627 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 274 [2020-07-17 13:17:41,627 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 13:17:41,628 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] [2020-07-17 13:17:41,628 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-07-17 13:17:41,628 INFO L427 AbstractCegarLoop]: === Iteration 19 === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 13:17:41,628 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 13:17:41,628 INFO L82 PathProgramCache]: Analyzing trace with hash -1726538569, now seen corresponding path program 1 times [2020-07-17 13:17:41,629 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-17 13:17:41,629 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [439112768] [2020-07-17 13:17:41,629 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 13:17:41,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:17:41,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:17:41,753 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-17 13:17:41,754 INFO L192 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-17 13:17:41,755 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [439112768] [2020-07-17 13:17:41,755 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-17 13:17:41,755 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-17 13:17:41,756 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [296976317] [2020-07-17 13:17:41,757 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-17 13:17:41,757 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-17 13:17:41,757 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-17 13:17:41,758 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-17 13:17:41,758 INFO L87 Difference]: Start difference. First operand 6004 states and 7101 transitions. Second operand 3 states. [2020-07-17 13:17:42,743 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 13:17:42,743 INFO L93 Difference]: Finished difference Result 11204 states and 13284 transitions. [2020-07-17 13:17:42,744 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-17 13:17:42,744 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 273 [2020-07-17 13:17:42,744 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 13:17:42,752 INFO L225 Difference]: With dead ends: 11204 [2020-07-17 13:17:42,752 INFO L226 Difference]: Without dead ends: 6816 [2020-07-17 13:17:42,762 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-17 13:17:42,768 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6816 states. [2020-07-17 13:17:43,176 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6816 to 6816. [2020-07-17 13:17:43,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6816 states. [2020-07-17 13:17:43,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6816 states to 6816 states and 8055 transitions. [2020-07-17 13:17:43,186 INFO L78 Accepts]: Start accepts. Automaton has 6816 states and 8055 transitions. Word has length 273 [2020-07-17 13:17:43,186 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 13:17:43,186 INFO L479 AbstractCegarLoop]: Abstraction has 6816 states and 8055 transitions. [2020-07-17 13:17:43,186 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-17 13:17:43,186 INFO L276 IsEmpty]: Start isEmpty. Operand 6816 states and 8055 transitions. [2020-07-17 13:17:43,193 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 275 [2020-07-17 13:17:43,193 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 13:17:43,193 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] [2020-07-17 13:17:43,193 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-07-17 13:17:43,194 INFO L427 AbstractCegarLoop]: === Iteration 20 === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 13:17:43,194 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 13:17:43,194 INFO L82 PathProgramCache]: Analyzing trace with hash 127538036, now seen corresponding path program 1 times [2020-07-17 13:17:43,194 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-17 13:17:43,194 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1268475350] [2020-07-17 13:17:43,195 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 13:17:43,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-17 13:17:43,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-17 13:17:43,418 INFO L192 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-17 13:17:43,418 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-07-17 13:17:43,418 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-07-17 13:17:43,420 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-07-17 13:17:43,466 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 17.07 01:17:43 BoogieIcfgContainer [2020-07-17 13:17:43,467 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-17 13:17:43,469 INFO L168 Benchmark]: Toolchain (without parser) took 20082.87 ms. Allocated memory was 136.8 MB in the beginning and 1.1 GB in the end (delta: 964.2 MB). Free memory was 100.9 MB in the beginning and 243.7 MB in the end (delta: -142.7 MB). Peak memory consumption was 821.4 MB. Max. memory is 7.1 GB. [2020-07-17 13:17:43,470 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 136.8 MB. Free memory was 120.3 MB in the beginning and 120.1 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. [2020-07-17 13:17:43,471 INFO L168 Benchmark]: CACSL2BoogieTranslator took 536.62 ms. Allocated memory was 136.8 MB in the beginning and 201.9 MB in the end (delta: 65.0 MB). Free memory was 100.5 MB in the beginning and 177.5 MB in the end (delta: -77.0 MB). Peak memory consumption was 26.3 MB. Max. memory is 7.1 GB. [2020-07-17 13:17:43,471 INFO L168 Benchmark]: Boogie Preprocessor took 56.41 ms. Allocated memory is still 201.9 MB. Free memory was 177.5 MB in the beginning and 174.8 MB in the end (delta: 2.8 MB). Peak memory consumption was 2.8 MB. Max. memory is 7.1 GB. [2020-07-17 13:17:43,472 INFO L168 Benchmark]: RCFGBuilder took 1002.64 ms. Allocated memory is still 201.9 MB. Free memory was 174.8 MB in the beginning and 110.5 MB in the end (delta: 64.2 MB). Peak memory consumption was 64.2 MB. Max. memory is 7.1 GB. [2020-07-17 13:17:43,473 INFO L168 Benchmark]: TraceAbstraction took 18479.44 ms. Allocated memory was 201.9 MB in the beginning and 1.1 GB in the end (delta: 899.2 MB). Free memory was 109.8 MB in the beginning and 243.7 MB in the end (delta: -133.8 MB). Peak memory consumption was 765.3 MB. Max. memory is 7.1 GB. [2020-07-17 13:17:43,476 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 136.8 MB. Free memory was 120.3 MB in the beginning and 120.1 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 536.62 ms. Allocated memory was 136.8 MB in the beginning and 201.9 MB in the end (delta: 65.0 MB). Free memory was 100.5 MB in the beginning and 177.5 MB in the end (delta: -77.0 MB). Peak memory consumption was 26.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 56.41 ms. Allocated memory is still 201.9 MB. Free memory was 177.5 MB in the beginning and 174.8 MB in the end (delta: 2.8 MB). Peak memory consumption was 2.8 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1002.64 ms. Allocated memory is still 201.9 MB. Free memory was 174.8 MB in the beginning and 110.5 MB in the end (delta: 64.2 MB). Peak memory consumption was 64.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 18479.44 ms. Allocated memory was 201.9 MB in the beginning and 1.1 GB in the end (delta: 899.2 MB). Free memory was 109.8 MB in the beginning and 243.7 MB in the end (delta: -133.8 MB). Peak memory consumption was 765.3 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 548]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L553] int s ; [L557] s = 12292 [L558] CALL ssl3_connect(s) [L11] int s__info_callback = __VERIFIER_nondet_int() ; [L12] int s__in_handshake = __VERIFIER_nondet_int() ; [L13] int s__state ; [L14] int s__new_session ; [L15] int s__server ; [L16] int s__version = __VERIFIER_nondet_int() ; [L17] int s__type ; [L18] int s__init_num ; [L19] int s__bbio = __VERIFIER_nondet_int() ; [L20] int s__wbio = __VERIFIER_nondet_int() ; [L21] int s__hit = __VERIFIER_nondet_int() ; [L22] int s__rwstate ; [L23] int s__init_buf___0 = 1; [L24] int s__debug = __VERIFIER_nondet_int() ; [L25] int s__shutdown ; [L26] int s__ctx__info_callback = __VERIFIER_nondet_int() ; [L27] int s__ctx__stats__sess_connect_renegotiate = __VERIFIER_nondet_int() ; [L28] int s__ctx__stats__sess_connect = __VERIFIER_nondet_int() ; [L29] int s__ctx__stats__sess_hit = __VERIFIER_nondet_int() ; [L30] int s__ctx__stats__sess_connect_good = __VERIFIER_nondet_int() ; [L31] int s__s3__change_cipher_spec ; [L32] int s__s3__flags ; [L33] int s__s3__delay_buf_pop_ret ; [L34] int s__s3__tmp__cert_req = __VERIFIER_nondet_int() ; [L35] int s__s3__tmp__new_compression = __VERIFIER_nondet_int() ; [L36] int s__s3__tmp__reuse_message = __VERIFIER_nondet_int() ; [L37] int s__s3__tmp__new_cipher = __VERIFIER_nondet_int() ; [L38] int s__s3__tmp__new_cipher__algorithms = __VERIFIER_nondet_int() ; [L39] int s__s3__tmp__next_state___0 ; [L40] int s__s3__tmp__new_compression__id = __VERIFIER_nondet_int() ; [L41] int s__session__cipher ; [L42] int s__session__compress_meth ; [L43] int buf ; [L44] unsigned long tmp ; [L45] unsigned long l ; [L46] int num1 ; [L47] int cb ; [L48] int ret ; [L49] int new_state ; [L50] int state ; [L51] int skip ; [L52] int tmp___0 ; [L53] int tmp___1 = __VERIFIER_nondet_int() ; [L54] int tmp___2 = __VERIFIER_nondet_int() ; [L55] int tmp___3 = __VERIFIER_nondet_int() ; [L56] int tmp___4 = __VERIFIER_nondet_int() ; [L57] int tmp___5 = __VERIFIER_nondet_int() ; [L58] int tmp___6 = __VERIFIER_nondet_int() ; [L59] int tmp___7 = __VERIFIER_nondet_int() ; [L60] int tmp___8 = __VERIFIER_nondet_int() ; [L61] int tmp___9 = __VERIFIER_nondet_int() ; [L62] int blastFlag ; [L63] int __cil_tmp55 ; [L64] unsigned long __cil_tmp56 ; [L65] long __cil_tmp57 ; [L66] long __cil_tmp58 ; [L67] long __cil_tmp59 ; [L68] long __cil_tmp60 ; [L69] long __cil_tmp61 ; [L70] long __cil_tmp62 ; [L71] long __cil_tmp63 ; [L72] long __cil_tmp64 ; [L73] long __cil_tmp65 ; [L77] s__state = initial_state [L78] blastFlag = 0 [L79] tmp = __VERIFIER_nondet_int() [L80] cb = 0 [L81] ret = -1 [L82] skip = 0 [L83] tmp___0 = 0 [L84] COND TRUE s__info_callback != 0 [L85] cb = s__info_callback [L91] s__in_handshake ++ [L92] COND FALSE !(tmp___1 - 12288) [L98] COND TRUE 1 [L100] state = s__state [L101] COND TRUE s__state == 12292 [L203] s__new_session = 1 [L204] s__state = 4096 [L205] s__ctx__stats__sess_connect_renegotiate ++ [L210] s__server = 0 [L211] COND TRUE cb != 0 [L215] __cil_tmp55 = s__version - 65280 [L216] COND FALSE !(__cil_tmp55 != 768) [L221] s__type = 4096 [L222] COND FALSE !(s__init_buf___0 == 0) [L234] COND FALSE !(! tmp___4) [L238] COND FALSE !(! tmp___5) [L242] s__state = 4368 [L243] s__ctx__stats__sess_connect ++ [L244] s__init_num = 0 [L520] COND FALSE !(! s__s3__tmp__reuse_message) [L537] skip = 0 [L98] COND TRUE 1 [L100] state = s__state [L101] COND FALSE !(s__state == 12292) [L104] COND FALSE !(s__state == 16384) [L107] COND FALSE !(s__state == 4096) [L110] COND FALSE !(s__state == 20480) [L113] COND FALSE !(s__state == 4099) [L116] COND TRUE s__state == 4368 [L248] s__shutdown = 0 [L249] ret = __VERIFIER_nondet_int() [L250] COND TRUE blastFlag == 0 [L251] blastFlag = 1 [L257] COND FALSE !(ret <= 0) [L260] s__state = 4384 [L261] s__init_num = 0 [L262] COND TRUE s__bbio != s__wbio [L520] COND FALSE !(! s__s3__tmp__reuse_message) [L537] skip = 0 [L98] COND TRUE 1 [L100] state = s__state [L101] COND FALSE !(s__state == 12292) [L104] COND FALSE !(s__state == 16384) [L107] COND FALSE !(s__state == 4096) [L110] COND FALSE !(s__state == 20480) [L113] COND FALSE !(s__state == 4099) [L116] COND FALSE !(s__state == 4368) [L119] COND FALSE !(s__state == 4369) [L122] COND TRUE s__state == 4384 [L268] ret = __VERIFIER_nondet_int() [L269] COND TRUE blastFlag == 1 [L270] blastFlag = 2 [L272] COND FALSE !(ret <= 0) [L275] COND FALSE !(\read(s__hit)) [L278] s__state = 4400 [L280] s__init_num = 0 [L520] COND FALSE !(! s__s3__tmp__reuse_message) [L537] skip = 0 [L98] COND TRUE 1 [L100] state = s__state [L101] COND FALSE !(s__state == 12292) [L104] COND FALSE !(s__state == 16384) [L107] COND FALSE !(s__state == 4096) [L110] COND FALSE !(s__state == 20480) [L113] COND FALSE !(s__state == 4099) [L116] COND FALSE !(s__state == 4368) [L119] COND FALSE !(s__state == 4369) [L122] COND FALSE !(s__state == 4384) [L125] COND FALSE !(s__state == 4385) [L128] COND TRUE s__state == 4400 [L285] __cil_tmp56 = (unsigned long )s__s3__tmp__new_cipher__algorithms [L286] COND FALSE !(__cil_tmp56 - 256UL) [L289] ret = __VERIFIER_nondet_int() [L290] COND TRUE blastFlag == 2 [L291] blastFlag = 3 [L293] COND FALSE !(ret <= 0) [L298] s__state = 4416 [L299] s__init_num = 0 [L520] COND FALSE !(! s__s3__tmp__reuse_message) [L537] skip = 0 [L98] COND TRUE 1 [L100] state = s__state [L101] COND FALSE !(s__state == 12292) [L104] COND FALSE !(s__state == 16384) [L107] COND FALSE !(s__state == 4096) [L110] COND FALSE !(s__state == 20480) [L113] COND FALSE !(s__state == 4099) [L116] COND FALSE !(s__state == 4368) [L119] COND FALSE !(s__state == 4369) [L122] COND FALSE !(s__state == 4384) [L125] COND FALSE !(s__state == 4385) [L128] COND FALSE !(s__state == 4400) [L131] COND FALSE !(s__state == 4401) [L134] COND TRUE s__state == 4416 [L303] ret = __VERIFIER_nondet_int() [L304] COND TRUE blastFlag == 3 [L305] blastFlag = 4 [L307] COND FALSE !(ret <= 0) [L310] s__state = 4432 [L311] s__init_num = 0 [L312] COND FALSE !(! tmp___6) [L520] COND FALSE !(! s__s3__tmp__reuse_message) [L537] skip = 0 [L98] COND TRUE 1 [L100] state = s__state [L101] COND FALSE !(s__state == 12292) [L104] COND FALSE !(s__state == 16384) [L107] COND FALSE !(s__state == 4096) [L110] COND FALSE !(s__state == 20480) [L113] COND FALSE !(s__state == 4099) [L116] COND FALSE !(s__state == 4368) [L119] COND FALSE !(s__state == 4369) [L122] COND FALSE !(s__state == 4384) [L125] COND FALSE !(s__state == 4385) [L128] COND FALSE !(s__state == 4400) [L131] COND FALSE !(s__state == 4401) [L134] COND FALSE !(s__state == 4416) [L137] COND FALSE !(s__state == 4417) [L140] COND TRUE s__state == 4432 [L319] ret = __VERIFIER_nondet_int() [L320] COND TRUE blastFlag == 4 [L548] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 385 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 18.3s, OverallIterations: 20, TraceHistogramMax: 6, AutomataDifference: 9.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 8564 SDtfs, 5208 SDslu, 9268 SDs, 0 SdLazy, 2087 SolverSat, 270 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 2.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 646 GetRequests, 590 SyntacticMatches, 13 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=6816occurred in iteration=19, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 4.9s AutomataMinimizationTime, 19 MinimizatonAttempts, 7407 StatesRemovedByMinimization, 15 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...