/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf -i ../../../trunk/examples/svcomp/ssh-simplified/s3_clnt_3.cil-2.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-267fbe0 [2020-07-17 13:17:31,514 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-17 13:17:31,516 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-17 13:17:31,528 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-17 13:17:31,529 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-17 13:17:31,530 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-17 13:17:31,531 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-17 13:17:31,533 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-17 13:17:31,534 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-17 13:17:31,535 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-17 13:17:31,536 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-17 13:17:31,537 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-17 13:17:31,538 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-17 13:17:31,539 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-17 13:17:31,540 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-17 13:17:31,541 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-17 13:17:31,541 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-17 13:17:31,542 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-17 13:17:31,544 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-17 13:17:31,546 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-17 13:17:31,548 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-17 13:17:31,549 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-17 13:17:31,550 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-17 13:17:31,551 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-17 13:17:31,553 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-07-17 13:17:31,560 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-17 13:17:31,561 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-17 13:17:31,562 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-17 13:17:31,562 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 13:17:31,572 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-17 13:17:31,572 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-17 13:17:31,573 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-17 13:17:31,573 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-17 13:17:31,574 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-17 13:17:31,574 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-17 13:17:31,574 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-17 13:17:31,574 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-17 13:17:31,574 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-17 13:17:31,575 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-17 13:17:31,575 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-17 13:17:31,575 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-17 13:17:31,575 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-17 13:17:31,575 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-17 13:17:31,576 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-17 13:17:31,576 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-07-17 13:17:31,576 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-17 13:17:31,576 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-17 13:17:31,576 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-17 13:17:31,577 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-17 13:17:31,577 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-07-17 13:17:31,577 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-17 13:17:31,577 INFO L138 SettingsManager]: * Use separate solver for trace checks=false [2020-07-17 13:17:31,873 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-17 13:17:31,886 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-17 13:17:31,889 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-17 13:17:31,890 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-17 13:17:31,891 INFO L275 PluginConnector]: CDTParser initialized [2020-07-17 13:17:31,891 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ssh-simplified/s3_clnt_3.cil-2.c [2020-07-17 13:17:31,951 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3fd32a177/4d04f0bc2dac4cd0a0efe78dea729866/FLAGf279a9c5d [2020-07-17 13:17:32,426 INFO L306 CDTParser]: Found 1 translation units. [2020-07-17 13:17:32,426 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ssh-simplified/s3_clnt_3.cil-2.c [2020-07-17 13:17:32,440 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3fd32a177/4d04f0bc2dac4cd0a0efe78dea729866/FLAGf279a9c5d [2020-07-17 13:17:32,783 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3fd32a177/4d04f0bc2dac4cd0a0efe78dea729866 [2020-07-17 13:17:32,793 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-17 13:17:32,796 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-17 13:17:32,797 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-17 13:17:32,798 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-17 13:17:32,802 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-17 13:17:32,803 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.07 01:17:32" (1/1) ... [2020-07-17 13:17:32,806 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@8f5ed9c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 01:17:32, skipping insertion in model container [2020-07-17 13:17:32,806 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.07 01:17:32" (1/1) ... [2020-07-17 13:17:32,815 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-17 13:17:32,873 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-17 13:17:33,108 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-17 13:17:33,112 INFO L203 MainTranslator]: Completed pre-run [2020-07-17 13:17:33,308 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-17 13:17:33,323 INFO L208 MainTranslator]: Completed translation [2020-07-17 13:17:33,323 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 01:17:33 WrapperNode [2020-07-17 13:17:33,323 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-17 13:17:33,324 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-17 13:17:33,324 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-17 13:17:33,324 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-17 13:17:33,334 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 01:17:33" (1/1) ... [2020-07-17 13:17:33,334 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 01:17:33" (1/1) ... [2020-07-17 13:17:33,343 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 01:17:33" (1/1) ... [2020-07-17 13:17:33,344 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 01:17:33" (1/1) ... [2020-07-17 13:17:33,358 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 01:17:33" (1/1) ... [2020-07-17 13:17:33,370 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 01:17:33" (1/1) ... [2020-07-17 13:17:33,373 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 01:17:33" (1/1) ... [2020-07-17 13:17:33,378 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-17 13:17:33,378 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-17 13:17:33,379 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-17 13:17:33,379 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-17 13:17:33,380 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 01:17:33" (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 13:17:33,462 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-17 13:17:33,462 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-17 13:17:33,462 INFO L138 BoogieDeclarations]: Found implementation of procedure ssl3_connect [2020-07-17 13:17:33,463 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-17 13:17:33,463 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-17 13:17:33,463 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-07-17 13:17:33,463 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-07-17 13:17:33,463 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_long [2020-07-17 13:17:33,463 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_ulong [2020-07-17 13:17:33,463 INFO L130 BoogieDeclarations]: Found specification of procedure ssl3_connect [2020-07-17 13:17:33,463 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-17 13:17:33,464 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-17 13:17:33,464 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-17 13:17:33,651 WARN L775 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-07-17 13:17:34,363 INFO L728 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##85: assume !false; [2020-07-17 13:17:34,364 INFO L728 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##84: assume false; [2020-07-17 13:17:34,386 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-17 13:17:34,387 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-07-17 13:17:34,394 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.07 01:17:34 BoogieIcfgContainer [2020-07-17 13:17:34,394 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-17 13:17:34,396 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-17 13:17:34,396 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-17 13:17:34,399 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-17 13:17:34,399 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.07 01:17:32" (1/3) ... [2020-07-17 13:17:34,400 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@29514271 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.07 01:17:34, skipping insertion in model container [2020-07-17 13:17:34,401 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 01:17:33" (2/3) ... [2020-07-17 13:17:34,401 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@29514271 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.07 01:17:34, skipping insertion in model container [2020-07-17 13:17:34,401 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.07 01:17:34" (3/3) ... [2020-07-17 13:17:34,403 INFO L109 eAbstractionObserver]: Analyzing ICFG s3_clnt_3.cil-2.c [2020-07-17 13:17:34,414 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-07-17 13:17:34,423 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-17 13:17:34,437 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-17 13:17:34,459 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-17 13:17:34,460 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-17 13:17:34,460 INFO L377 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2020-07-17 13:17:34,460 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-17 13:17:34,460 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-17 13:17:34,461 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-17 13:17:34,461 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-17 13:17:34,461 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-17 13:17:34,484 INFO L276 IsEmpty]: Start isEmpty. Operand 414 states. [2020-07-17 13:17:34,505 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2020-07-17 13:17:34,505 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 13:17:34,507 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-17 13:17:34,508 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 13:17:34,514 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 13:17:34,514 INFO L82 PathProgramCache]: Analyzing trace with hash 44117518, now seen corresponding path program 1 times [2020-07-17 13:17:34,523 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-17 13:17:34,524 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [738607434] [2020-07-17 13:17:34,524 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 13:17:34,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:17:35,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:17:35,093 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 13:17:35,100 INFO L192 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-17 13:17:35,102 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [738607434] [2020-07-17 13:17:35,104 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-17 13:17:35,104 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-07-17 13:17:35,105 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1930692334] [2020-07-17 13:17:35,110 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-07-17 13:17:35,111 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-17 13:17:35,124 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-07-17 13:17:35,125 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-07-17 13:17:35,127 INFO L87 Difference]: Start difference. First operand 414 states. Second operand 6 states. [2020-07-17 13:17:35,539 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 13:17:35,539 INFO L93 Difference]: Finished difference Result 733 states and 948 transitions. [2020-07-17 13:17:35,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-07-17 13:17:35,541 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 181 [2020-07-17 13:17:35,543 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 13:17:35,559 INFO L225 Difference]: With dead ends: 733 [2020-07-17 13:17:35,560 INFO L226 Difference]: Without dead ends: 399 [2020-07-17 13:17:35,566 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 13:17:35,590 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 399 states. [2020-07-17 13:17:35,675 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 399 to 378. [2020-07-17 13:17:35,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 378 states. [2020-07-17 13:17:35,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 378 states to 378 states and 437 transitions. [2020-07-17 13:17:35,683 INFO L78 Accepts]: Start accepts. Automaton has 378 states and 437 transitions. Word has length 181 [2020-07-17 13:17:35,688 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 13:17:35,689 INFO L479 AbstractCegarLoop]: Abstraction has 378 states and 437 transitions. [2020-07-17 13:17:35,689 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-07-17 13:17:35,689 INFO L276 IsEmpty]: Start isEmpty. Operand 378 states and 437 transitions. [2020-07-17 13:17:35,701 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 204 [2020-07-17 13:17:35,703 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 13:17:35,704 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-17 13:17:35,704 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-07-17 13:17:35,706 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 13:17:35,706 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 13:17:35,706 INFO L82 PathProgramCache]: Analyzing trace with hash 1543076850, now seen corresponding path program 1 times [2020-07-17 13:17:35,706 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-17 13:17:35,707 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1243562448] [2020-07-17 13:17:35,707 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 13:17:35,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:17:35,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:17:36,036 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 13:17:36,039 INFO L192 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-17 13:17:36,039 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1243562448] [2020-07-17 13:17:36,040 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-17 13:17:36,040 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-07-17 13:17:36,042 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [903065695] [2020-07-17 13:17:36,043 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-07-17 13:17:36,044 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-17 13:17:36,044 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-07-17 13:17:36,044 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-07-17 13:17:36,045 INFO L87 Difference]: Start difference. First operand 378 states and 437 transitions. Second operand 6 states. [2020-07-17 13:17:36,437 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 13:17:36,438 INFO L93 Difference]: Finished difference Result 654 states and 804 transitions. [2020-07-17 13:17:36,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-07-17 13:17:36,439 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 203 [2020-07-17 13:17:36,445 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 13:17:36,454 INFO L225 Difference]: With dead ends: 654 [2020-07-17 13:17:36,454 INFO L226 Difference]: Without dead ends: 442 [2020-07-17 13:17:36,460 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 42 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 13:17:36,461 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 442 states. [2020-07-17 13:17:36,545 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 442 to 391. [2020-07-17 13:17:36,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 391 states. [2020-07-17 13:17:36,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 391 states to 391 states and 455 transitions. [2020-07-17 13:17:36,548 INFO L78 Accepts]: Start accepts. Automaton has 391 states and 455 transitions. Word has length 203 [2020-07-17 13:17:36,549 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 13:17:36,549 INFO L479 AbstractCegarLoop]: Abstraction has 391 states and 455 transitions. [2020-07-17 13:17:36,549 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-07-17 13:17:36,550 INFO L276 IsEmpty]: Start isEmpty. Operand 391 states and 455 transitions. [2020-07-17 13:17:36,553 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 208 [2020-07-17 13:17:36,554 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 13:17:36,554 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-17 13:17:36,554 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-07-17 13:17:36,554 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 13:17:36,555 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 13:17:36,555 INFO L82 PathProgramCache]: Analyzing trace with hash 1125063182, now seen corresponding path program 1 times [2020-07-17 13:17:36,556 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-17 13:17:36,556 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2007579575] [2020-07-17 13:17:36,556 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 13:17:36,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:17:36,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:17:36,729 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 13:17:36,730 INFO L192 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-17 13:17:36,731 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2007579575] [2020-07-17 13:17:36,731 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-17 13:17:36,732 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-17 13:17:36,732 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [834547593] [2020-07-17 13:17:36,733 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-17 13:17:36,734 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-17 13:17:36,734 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-17 13:17:36,735 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-17 13:17:36,735 INFO L87 Difference]: Start difference. First operand 391 states and 455 transitions. Second operand 3 states. [2020-07-17 13:17:36,912 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 13:17:36,913 INFO L93 Difference]: Finished difference Result 644 states and 778 transitions. [2020-07-17 13:17:36,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-17 13:17:36,913 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 207 [2020-07-17 13:17:36,914 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 13:17:36,918 INFO L225 Difference]: With dead ends: 644 [2020-07-17 13:17:36,918 INFO L226 Difference]: Without dead ends: 419 [2020-07-17 13:17:36,920 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 13:17:36,922 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 419 states. [2020-07-17 13:17:36,976 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 419 to 409. [2020-07-17 13:17:36,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 409 states. [2020-07-17 13:17:36,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 409 states to 409 states and 478 transitions. [2020-07-17 13:17:36,978 INFO L78 Accepts]: Start accepts. Automaton has 409 states and 478 transitions. Word has length 207 [2020-07-17 13:17:36,979 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 13:17:36,979 INFO L479 AbstractCegarLoop]: Abstraction has 409 states and 478 transitions. [2020-07-17 13:17:36,979 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-17 13:17:36,979 INFO L276 IsEmpty]: Start isEmpty. Operand 409 states and 478 transitions. [2020-07-17 13:17:36,982 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 215 [2020-07-17 13:17:36,982 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 13:17:36,982 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-17 13:17:36,983 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-07-17 13:17:36,983 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 13:17:36,983 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 13:17:36,984 INFO L82 PathProgramCache]: Analyzing trace with hash -144330786, now seen corresponding path program 1 times [2020-07-17 13:17:36,984 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-17 13:17:36,984 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1274690917] [2020-07-17 13:17:36,984 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 13:17:37,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:17:37,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:17:37,104 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 13:17:37,106 INFO L192 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-17 13:17:37,106 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1274690917] [2020-07-17 13:17:37,106 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-17 13:17:37,107 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-17 13:17:37,107 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [755221112] [2020-07-17 13:17:37,107 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-17 13:17:37,108 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-17 13:17:37,108 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-17 13:17:37,108 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-17 13:17:37,108 INFO L87 Difference]: Start difference. First operand 409 states and 478 transitions. Second operand 3 states. [2020-07-17 13:17:37,217 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 13:17:37,217 INFO L93 Difference]: Finished difference Result 888 states and 1088 transitions. [2020-07-17 13:17:37,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-17 13:17:37,218 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 214 [2020-07-17 13:17:37,219 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 13:17:37,222 INFO L225 Difference]: With dead ends: 888 [2020-07-17 13:17:37,222 INFO L226 Difference]: Without dead ends: 645 [2020-07-17 13:17:37,224 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 13:17:37,225 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 645 states. [2020-07-17 13:17:37,305 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 645 to 645. [2020-07-17 13:17:37,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 645 states. [2020-07-17 13:17:37,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 645 states to 645 states and 775 transitions. [2020-07-17 13:17:37,311 INFO L78 Accepts]: Start accepts. Automaton has 645 states and 775 transitions. Word has length 214 [2020-07-17 13:17:37,312 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 13:17:37,312 INFO L479 AbstractCegarLoop]: Abstraction has 645 states and 775 transitions. [2020-07-17 13:17:37,312 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-17 13:17:37,312 INFO L276 IsEmpty]: Start isEmpty. Operand 645 states and 775 transitions. [2020-07-17 13:17:37,319 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 230 [2020-07-17 13:17:37,320 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 13:17:37,320 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-17 13:17:37,321 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-07-17 13:17:37,321 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 13:17:37,322 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 13:17:37,322 INFO L82 PathProgramCache]: Analyzing trace with hash 1130092021, now seen corresponding path program 1 times [2020-07-17 13:17:37,322 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-17 13:17:37,323 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [868602180] [2020-07-17 13:17:37,323 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 13:17:37,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:17:37,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:17:37,526 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 13:17:37,528 INFO L192 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-17 13:17:37,529 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [868602180] [2020-07-17 13:17:37,529 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-17 13:17:37,529 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-17 13:17:37,530 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1963054783] [2020-07-17 13:17:37,530 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-17 13:17:37,531 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-17 13:17:37,531 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-17 13:17:37,531 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-17 13:17:37,531 INFO L87 Difference]: Start difference. First operand 645 states and 775 transitions. Second operand 3 states. [2020-07-17 13:17:37,807 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 13:17:37,808 INFO L93 Difference]: Finished difference Result 1188 states and 1470 transitions. [2020-07-17 13:17:37,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-17 13:17:37,809 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 229 [2020-07-17 13:17:37,810 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 13:17:37,815 INFO L225 Difference]: With dead ends: 1188 [2020-07-17 13:17:37,815 INFO L226 Difference]: Without dead ends: 709 [2020-07-17 13:17:37,817 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 13:17:37,819 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 709 states. [2020-07-17 13:17:37,908 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 709 to 685. [2020-07-17 13:17:37,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 685 states. [2020-07-17 13:17:37,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 685 states to 685 states and 825 transitions. [2020-07-17 13:17:37,913 INFO L78 Accepts]: Start accepts. Automaton has 685 states and 825 transitions. Word has length 229 [2020-07-17 13:17:37,914 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 13:17:37,914 INFO L479 AbstractCegarLoop]: Abstraction has 685 states and 825 transitions. [2020-07-17 13:17:37,915 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-17 13:17:37,915 INFO L276 IsEmpty]: Start isEmpty. Operand 685 states and 825 transitions. [2020-07-17 13:17:37,922 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 237 [2020-07-17 13:17:37,922 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 13:17:37,923 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-17 13:17:37,923 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-07-17 13:17:37,923 INFO L427 AbstractCegarLoop]: === Iteration 6 === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 13:17:37,924 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 13:17:37,924 INFO L82 PathProgramCache]: Analyzing trace with hash -2121264617, now seen corresponding path program 1 times [2020-07-17 13:17:37,924 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-17 13:17:37,925 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1795465642] [2020-07-17 13:17:37,925 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 13:17:37,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:17:38,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:17:38,120 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 13:17:38,121 INFO L192 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-17 13:17:38,122 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1795465642] [2020-07-17 13:17:38,122 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-17 13:17:38,123 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-17 13:17:38,123 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1290639535] [2020-07-17 13:17:38,123 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-17 13:17:38,124 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-17 13:17:38,124 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-17 13:17:38,125 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-17 13:17:38,125 INFO L87 Difference]: Start difference. First operand 685 states and 825 transitions. Second operand 3 states. [2020-07-17 13:17:38,296 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 13:17:38,296 INFO L93 Difference]: Finished difference Result 1653 states and 2033 transitions. [2020-07-17 13:17:38,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-17 13:17:38,297 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 236 [2020-07-17 13:17:38,297 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 13:17:38,303 INFO L225 Difference]: With dead ends: 1653 [2020-07-17 13:17:38,304 INFO L226 Difference]: Without dead ends: 1134 [2020-07-17 13:17:38,306 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 13:17:38,308 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1134 states. [2020-07-17 13:17:38,416 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1134 to 1132. [2020-07-17 13:17:38,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1132 states. [2020-07-17 13:17:38,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1132 states to 1132 states and 1369 transitions. [2020-07-17 13:17:38,422 INFO L78 Accepts]: Start accepts. Automaton has 1132 states and 1369 transitions. Word has length 236 [2020-07-17 13:17:38,423 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 13:17:38,423 INFO L479 AbstractCegarLoop]: Abstraction has 1132 states and 1369 transitions. [2020-07-17 13:17:38,423 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-17 13:17:38,423 INFO L276 IsEmpty]: Start isEmpty. Operand 1132 states and 1369 transitions. [2020-07-17 13:17:38,427 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 238 [2020-07-17 13:17:38,428 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 13:17:38,428 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-17 13:17:38,428 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-07-17 13:17:38,428 INFO L427 AbstractCegarLoop]: === Iteration 7 === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 13:17:38,429 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 13:17:38,429 INFO L82 PathProgramCache]: Analyzing trace with hash -1692173170, now seen corresponding path program 1 times [2020-07-17 13:17:38,429 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-17 13:17:38,430 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1429415819] [2020-07-17 13:17:38,430 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 13:17:38,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:17:38,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:17:38,560 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 13:17:38,562 INFO L192 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-17 13:17:38,562 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1429415819] [2020-07-17 13:17:38,563 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-17 13:17:38,563 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-17 13:17:38,563 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1843774911] [2020-07-17 13:17:38,564 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-17 13:17:38,564 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-17 13:17:38,564 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-17 13:17:38,565 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-17 13:17:38,565 INFO L87 Difference]: Start difference. First operand 1132 states and 1369 transitions. Second operand 3 states. [2020-07-17 13:17:38,737 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 13:17:38,738 INFO L93 Difference]: Finished difference Result 2116 states and 2590 transitions. [2020-07-17 13:17:38,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-17 13:17:38,738 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 237 [2020-07-17 13:17:38,739 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 13:17:38,744 INFO L225 Difference]: With dead ends: 2116 [2020-07-17 13:17:38,745 INFO L226 Difference]: Without dead ends: 1150 [2020-07-17 13:17:38,747 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 55 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 13:17:38,749 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1150 states. [2020-07-17 13:17:38,871 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1150 to 1140. [2020-07-17 13:17:38,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1140 states. [2020-07-17 13:17:38,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1140 states to 1140 states and 1373 transitions. [2020-07-17 13:17:38,877 INFO L78 Accepts]: Start accepts. Automaton has 1140 states and 1373 transitions. Word has length 237 [2020-07-17 13:17:38,878 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 13:17:38,878 INFO L479 AbstractCegarLoop]: Abstraction has 1140 states and 1373 transitions. [2020-07-17 13:17:38,878 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-17 13:17:38,878 INFO L276 IsEmpty]: Start isEmpty. Operand 1140 states and 1373 transitions. [2020-07-17 13:17:38,883 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 240 [2020-07-17 13:17:38,883 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 13:17:38,883 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-17 13:17:38,884 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-07-17 13:17:38,884 INFO L427 AbstractCegarLoop]: === Iteration 8 === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 13:17:38,884 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 13:17:38,884 INFO L82 PathProgramCache]: Analyzing trace with hash 1154899678, now seen corresponding path program 1 times [2020-07-17 13:17:38,885 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-17 13:17:38,885 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1234496697] [2020-07-17 13:17:38,885 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 13:17:38,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:17:38,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:17:38,981 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 13:17:38,982 INFO L192 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-17 13:17:38,983 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1234496697] [2020-07-17 13:17:38,983 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-17 13:17:38,983 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-17 13:17:38,983 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1304797605] [2020-07-17 13:17:38,984 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-17 13:17:38,984 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-17 13:17:38,984 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-17 13:17:38,985 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-17 13:17:38,985 INFO L87 Difference]: Start difference. First operand 1140 states and 1373 transitions. Second operand 3 states. [2020-07-17 13:17:39,237 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 13:17:39,237 INFO L93 Difference]: Finished difference Result 3074 states and 3757 transitions. [2020-07-17 13:17:39,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-17 13:17:39,238 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 239 [2020-07-17 13:17:39,239 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 13:17:39,248 INFO L225 Difference]: With dead ends: 3074 [2020-07-17 13:17:39,248 INFO L226 Difference]: Without dead ends: 2100 [2020-07-17 13:17:39,251 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 55 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 13:17:39,254 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2100 states. [2020-07-17 13:17:39,442 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2100 to 2098. [2020-07-17 13:17:39,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2098 states. [2020-07-17 13:17:39,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2098 states to 2098 states and 2541 transitions. [2020-07-17 13:17:39,453 INFO L78 Accepts]: Start accepts. Automaton has 2098 states and 2541 transitions. Word has length 239 [2020-07-17 13:17:39,454 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 13:17:39,454 INFO L479 AbstractCegarLoop]: Abstraction has 2098 states and 2541 transitions. [2020-07-17 13:17:39,454 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-17 13:17:39,454 INFO L276 IsEmpty]: Start isEmpty. Operand 2098 states and 2541 transitions. [2020-07-17 13:17:39,459 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 240 [2020-07-17 13:17:39,459 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 13:17:39,460 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-17 13:17:39,460 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-07-17 13:17:39,460 INFO L427 AbstractCegarLoop]: === Iteration 9 === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 13:17:39,461 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 13:17:39,461 INFO L82 PathProgramCache]: Analyzing trace with hash -1231609828, now seen corresponding path program 1 times [2020-07-17 13:17:39,461 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-17 13:17:39,461 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1477579068] [2020-07-17 13:17:39,461 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 13:17:39,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:17:39,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:17:39,575 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 13:17:39,576 INFO L192 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-17 13:17:39,577 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1477579068] [2020-07-17 13:17:39,577 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-17 13:17:39,577 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-17 13:17:39,578 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [817230864] [2020-07-17 13:17:39,578 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-17 13:17:39,578 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-17 13:17:39,578 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-17 13:17:39,579 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-17 13:17:39,579 INFO L87 Difference]: Start difference. First operand 2098 states and 2541 transitions. Second operand 3 states. [2020-07-17 13:17:39,885 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 13:17:39,885 INFO L93 Difference]: Finished difference Result 3089 states and 3751 transitions. [2020-07-17 13:17:39,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-17 13:17:39,886 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 239 [2020-07-17 13:17:39,887 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 13:17:39,897 INFO L225 Difference]: With dead ends: 3089 [2020-07-17 13:17:39,897 INFO L226 Difference]: Without dead ends: 2115 [2020-07-17 13:17:39,900 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 13:17:39,904 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2115 states. [2020-07-17 13:17:40,088 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2115 to 2113. [2020-07-17 13:17:40,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2113 states. [2020-07-17 13:17:40,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2113 states to 2113 states and 2547 transitions. [2020-07-17 13:17:40,099 INFO L78 Accepts]: Start accepts. Automaton has 2113 states and 2547 transitions. Word has length 239 [2020-07-17 13:17:40,100 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 13:17:40,100 INFO L479 AbstractCegarLoop]: Abstraction has 2113 states and 2547 transitions. [2020-07-17 13:17:40,100 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-17 13:17:40,101 INFO L276 IsEmpty]: Start isEmpty. Operand 2113 states and 2547 transitions. [2020-07-17 13:17:40,110 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 241 [2020-07-17 13:17:40,110 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 13:17:40,110 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-17 13:17:40,111 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-07-17 13:17:40,111 INFO L427 AbstractCegarLoop]: === Iteration 10 === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 13:17:40,111 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 13:17:40,111 INFO L82 PathProgramCache]: Analyzing trace with hash -2054606457, now seen corresponding path program 1 times [2020-07-17 13:17:40,112 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-17 13:17:40,112 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1345309450] [2020-07-17 13:17:40,112 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 13:17:40,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:17:40,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:17:40,255 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 13:17:40,257 INFO L192 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-17 13:17:40,258 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1345309450] [2020-07-17 13:17:40,258 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-17 13:17:40,258 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-17 13:17:40,258 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1109964772] [2020-07-17 13:17:40,259 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-17 13:17:40,259 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-17 13:17:40,259 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-17 13:17:40,260 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-17 13:17:40,260 INFO L87 Difference]: Start difference. First operand 2113 states and 2547 transitions. Second operand 3 states. [2020-07-17 13:17:40,667 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 13:17:40,667 INFO L93 Difference]: Finished difference Result 4045 states and 4926 transitions. [2020-07-17 13:17:40,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-17 13:17:40,668 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 240 [2020-07-17 13:17:40,669 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 13:17:40,685 INFO L225 Difference]: With dead ends: 4045 [2020-07-17 13:17:40,685 INFO L226 Difference]: Without dead ends: 3068 [2020-07-17 13:17:40,689 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 13:17:40,693 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3068 states. [2020-07-17 13:17:40,965 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3068 to 3068. [2020-07-17 13:17:40,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3068 states. [2020-07-17 13:17:40,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3068 states to 3068 states and 3710 transitions. [2020-07-17 13:17:40,980 INFO L78 Accepts]: Start accepts. Automaton has 3068 states and 3710 transitions. Word has length 240 [2020-07-17 13:17:40,980 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 13:17:40,981 INFO L479 AbstractCegarLoop]: Abstraction has 3068 states and 3710 transitions. [2020-07-17 13:17:40,981 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-17 13:17:40,981 INFO L276 IsEmpty]: Start isEmpty. Operand 3068 states and 3710 transitions. [2020-07-17 13:17:40,988 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 251 [2020-07-17 13:17:40,988 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 13:17:40,989 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-17 13:17:40,989 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-07-17 13:17:40,989 INFO L427 AbstractCegarLoop]: === Iteration 11 === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 13:17:40,989 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 13:17:40,990 INFO L82 PathProgramCache]: Analyzing trace with hash 1762569168, now seen corresponding path program 1 times [2020-07-17 13:17:40,990 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-17 13:17:40,990 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2052551729] [2020-07-17 13:17:40,990 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 13:17:41,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:17:41,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:17:41,109 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 13:17:41,111 INFO L192 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-17 13:17:41,111 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2052551729] [2020-07-17 13:17:41,111 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-17 13:17:41,112 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-17 13:17:41,112 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [614946617] [2020-07-17 13:17:41,112 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-17 13:17:41,113 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-17 13:17:41,113 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-17 13:17:41,113 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-17 13:17:41,113 INFO L87 Difference]: Start difference. First operand 3068 states and 3710 transitions. Second operand 3 states. [2020-07-17 13:17:41,674 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 13:17:41,674 INFO L93 Difference]: Finished difference Result 6702 states and 8354 transitions. [2020-07-17 13:17:41,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-17 13:17:41,675 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 250 [2020-07-17 13:17:41,676 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 13:17:41,699 INFO L225 Difference]: With dead ends: 6702 [2020-07-17 13:17:41,699 INFO L226 Difference]: Without dead ends: 3803 [2020-07-17 13:17:41,712 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 13:17:41,719 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3803 states. [2020-07-17 13:17:42,150 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3803 to 3545. [2020-07-17 13:17:42,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3545 states. [2020-07-17 13:17:42,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3545 states to 3545 states and 4226 transitions. [2020-07-17 13:17:42,163 INFO L78 Accepts]: Start accepts. Automaton has 3545 states and 4226 transitions. Word has length 250 [2020-07-17 13:17:42,163 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 13:17:42,163 INFO L479 AbstractCegarLoop]: Abstraction has 3545 states and 4226 transitions. [2020-07-17 13:17:42,163 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-17 13:17:42,163 INFO L276 IsEmpty]: Start isEmpty. Operand 3545 states and 4226 transitions. [2020-07-17 13:17:42,171 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 251 [2020-07-17 13:17:42,171 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 13:17:42,171 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-17 13:17:42,172 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-07-17 13:17:42,172 INFO L427 AbstractCegarLoop]: === Iteration 12 === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 13:17:42,172 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 13:17:42,172 INFO L82 PathProgramCache]: Analyzing trace with hash -81032144, now seen corresponding path program 1 times [2020-07-17 13:17:42,173 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-17 13:17:42,173 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1025111625] [2020-07-17 13:17:42,173 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 13:17:42,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:17:42,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:17:42,296 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 13:17:42,297 INFO L192 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-17 13:17:42,298 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1025111625] [2020-07-17 13:17:42,298 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-17 13:17:42,298 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-17 13:17:42,299 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1928578854] [2020-07-17 13:17:42,299 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-17 13:17:42,299 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-17 13:17:42,300 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-17 13:17:42,300 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-17 13:17:42,300 INFO L87 Difference]: Start difference. First operand 3545 states and 4226 transitions. Second operand 3 states. [2020-07-17 13:17:42,745 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 13:17:42,745 INFO L93 Difference]: Finished difference Result 7246 states and 8728 transitions. [2020-07-17 13:17:42,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-17 13:17:42,746 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 250 [2020-07-17 13:17:42,747 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 13:17:42,771 INFO L225 Difference]: With dead ends: 7246 [2020-07-17 13:17:42,771 INFO L226 Difference]: Without dead ends: 3882 [2020-07-17 13:17:42,780 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 13:17:42,786 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3882 states. [2020-07-17 13:17:43,259 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3882 to 3758. [2020-07-17 13:17:43,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3758 states. [2020-07-17 13:17:43,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3758 states to 3758 states and 4454 transitions. [2020-07-17 13:17:43,272 INFO L78 Accepts]: Start accepts. Automaton has 3758 states and 4454 transitions. Word has length 250 [2020-07-17 13:17:43,273 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 13:17:43,273 INFO L479 AbstractCegarLoop]: Abstraction has 3758 states and 4454 transitions. [2020-07-17 13:17:43,273 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-17 13:17:43,273 INFO L276 IsEmpty]: Start isEmpty. Operand 3758 states and 4454 transitions. [2020-07-17 13:17:43,282 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 266 [2020-07-17 13:17:43,282 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 13:17:43,283 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-17 13:17:43,283 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-07-17 13:17:43,283 INFO L427 AbstractCegarLoop]: === Iteration 13 === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 13:17:43,283 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 13:17:43,284 INFO L82 PathProgramCache]: Analyzing trace with hash 713835900, now seen corresponding path program 1 times [2020-07-17 13:17:43,284 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-17 13:17:43,284 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [554810412] [2020-07-17 13:17:43,284 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 13:17:43,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:17:43,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:17:43,409 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 13:17:43,411 INFO L192 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-17 13:17:43,412 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [554810412] [2020-07-17 13:17:43,412 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-17 13:17:43,415 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-17 13:17:43,416 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [193248347] [2020-07-17 13:17:43,416 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-17 13:17:43,416 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-17 13:17:43,417 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-17 13:17:43,417 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-07-17 13:17:43,417 INFO L87 Difference]: Start difference. First operand 3758 states and 4454 transitions. Second operand 5 states. [2020-07-17 13:17:44,043 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 13:17:44,043 INFO L93 Difference]: Finished difference Result 6233 states and 7321 transitions. [2020-07-17 13:17:44,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-07-17 13:17:44,044 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 265 [2020-07-17 13:17:44,045 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 13:17:44,070 INFO L225 Difference]: With dead ends: 6233 [2020-07-17 13:17:44,070 INFO L226 Difference]: Without dead ends: 4430 [2020-07-17 13:17:44,077 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 80 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 13:17:44,082 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4430 states. [2020-07-17 13:17:44,496 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4430 to 3860. [2020-07-17 13:17:44,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3860 states. [2020-07-17 13:17:44,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3860 states to 3860 states and 4565 transitions. [2020-07-17 13:17:44,512 INFO L78 Accepts]: Start accepts. Automaton has 3860 states and 4565 transitions. Word has length 265 [2020-07-17 13:17:44,513 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 13:17:44,513 INFO L479 AbstractCegarLoop]: Abstraction has 3860 states and 4565 transitions. [2020-07-17 13:17:44,513 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-17 13:17:44,514 INFO L276 IsEmpty]: Start isEmpty. Operand 3860 states and 4565 transitions. [2020-07-17 13:17:44,528 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 269 [2020-07-17 13:17:44,528 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 13:17:44,529 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-17 13:17:44,529 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-07-17 13:17:44,529 INFO L427 AbstractCegarLoop]: === Iteration 14 === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 13:17:44,530 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 13:17:44,530 INFO L82 PathProgramCache]: Analyzing trace with hash -700825412, now seen corresponding path program 2 times [2020-07-17 13:17:44,531 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-17 13:17:44,537 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2079729022] [2020-07-17 13:17:44,537 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 13:17:44,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:17:44,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:17:44,700 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 13:17:44,703 INFO L192 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-17 13:17:44,703 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2079729022] [2020-07-17 13:17:44,703 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-17 13:17:44,704 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-17 13:17:44,704 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [412581991] [2020-07-17 13:17:44,706 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-17 13:17:44,706 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-17 13:17:44,707 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-17 13:17:44,707 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-07-17 13:17:44,707 INFO L87 Difference]: Start difference. First operand 3860 states and 4565 transitions. Second operand 5 states. [2020-07-17 13:17:45,443 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 13:17:45,444 INFO L93 Difference]: Finished difference Result 6567 states and 7700 transitions. [2020-07-17 13:17:45,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-07-17 13:17:45,444 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 268 [2020-07-17 13:17:45,445 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 13:17:45,463 INFO L225 Difference]: With dead ends: 6567 [2020-07-17 13:17:45,463 INFO L226 Difference]: Without dead ends: 4662 [2020-07-17 13:17:45,467 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 55 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 13:17:45,472 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4662 states. [2020-07-17 13:17:45,831 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4662 to 3897. [2020-07-17 13:17:45,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3897 states. [2020-07-17 13:17:45,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3897 states to 3897 states and 4611 transitions. [2020-07-17 13:17:45,841 INFO L78 Accepts]: Start accepts. Automaton has 3897 states and 4611 transitions. Word has length 268 [2020-07-17 13:17:45,841 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 13:17:45,841 INFO L479 AbstractCegarLoop]: Abstraction has 3897 states and 4611 transitions. [2020-07-17 13:17:45,841 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-17 13:17:45,842 INFO L276 IsEmpty]: Start isEmpty. Operand 3897 states and 4611 transitions. [2020-07-17 13:17:45,851 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 270 [2020-07-17 13:17:45,851 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 13:17:45,851 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-17 13:17:45,851 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-07-17 13:17:45,852 INFO L427 AbstractCegarLoop]: === Iteration 15 === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 13:17:45,852 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 13:17:45,852 INFO L82 PathProgramCache]: Analyzing trace with hash 19964066, now seen corresponding path program 1 times [2020-07-17 13:17:45,852 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-17 13:17:45,853 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1547964489] [2020-07-17 13:17:45,853 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 13:17:45,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:17:45,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:17:45,980 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 13:17:45,982 INFO L192 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-17 13:17:45,982 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1547964489] [2020-07-17 13:17:45,982 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-17 13:17:45,983 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-17 13:17:45,983 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [986647027] [2020-07-17 13:17:45,983 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-17 13:17:45,984 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-17 13:17:45,984 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-17 13:17:45,984 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-07-17 13:17:45,984 INFO L87 Difference]: Start difference. First operand 3897 states and 4611 transitions. Second operand 5 states. [2020-07-17 13:17:46,677 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 13:17:46,677 INFO L93 Difference]: Finished difference Result 6406 states and 7521 transitions. [2020-07-17 13:17:46,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-07-17 13:17:46,678 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 269 [2020-07-17 13:17:46,679 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 13:17:46,688 INFO L225 Difference]: With dead ends: 6406 [2020-07-17 13:17:46,689 INFO L226 Difference]: Without dead ends: 4464 [2020-07-17 13:17:46,694 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 55 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 13:17:46,700 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4464 states. [2020-07-17 13:17:47,007 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4464 to 3803. [2020-07-17 13:17:47,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3803 states. [2020-07-17 13:17:47,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3803 states to 3803 states and 4502 transitions. [2020-07-17 13:17:47,016 INFO L78 Accepts]: Start accepts. Automaton has 3803 states and 4502 transitions. Word has length 269 [2020-07-17 13:17:47,016 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 13:17:47,016 INFO L479 AbstractCegarLoop]: Abstraction has 3803 states and 4502 transitions. [2020-07-17 13:17:47,016 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-17 13:17:47,017 INFO L276 IsEmpty]: Start isEmpty. Operand 3803 states and 4502 transitions. [2020-07-17 13:17:47,026 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 270 [2020-07-17 13:17:47,026 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 13:17:47,027 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-17 13:17:47,027 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-07-17 13:17:47,027 INFO L427 AbstractCegarLoop]: === Iteration 16 === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 13:17:47,028 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 13:17:47,028 INFO L82 PathProgramCache]: Analyzing trace with hash -76751101, now seen corresponding path program 1 times [2020-07-17 13:17:47,028 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-17 13:17:47,028 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1061749561] [2020-07-17 13:17:47,028 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 13:17:47,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:17:47,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:17:47,149 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 13:17:47,151 INFO L192 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-17 13:17:47,151 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1061749561] [2020-07-17 13:17:47,152 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-17 13:17:47,152 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-17 13:17:47,152 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [932652080] [2020-07-17 13:17:47,153 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-17 13:17:47,154 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-17 13:17:47,154 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-17 13:17:47,154 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-17 13:17:47,155 INFO L87 Difference]: Start difference. First operand 3803 states and 4502 transitions. Second operand 3 states. [2020-07-17 13:17:47,800 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 13:17:47,801 INFO L93 Difference]: Finished difference Result 7744 states and 9274 transitions. [2020-07-17 13:17:47,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-17 13:17:47,802 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 269 [2020-07-17 13:17:47,803 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 13:17:47,810 INFO L225 Difference]: With dead ends: 7744 [2020-07-17 13:17:47,811 INFO L226 Difference]: Without dead ends: 4122 [2020-07-17 13:17:47,817 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 13:17:47,822 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4122 states. [2020-07-17 13:17:48,160 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4122 to 4040. [2020-07-17 13:17:48,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4040 states. [2020-07-17 13:17:48,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4040 states to 4040 states and 4754 transitions. [2020-07-17 13:17:48,170 INFO L78 Accepts]: Start accepts. Automaton has 4040 states and 4754 transitions. Word has length 269 [2020-07-17 13:17:48,170 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 13:17:48,170 INFO L479 AbstractCegarLoop]: Abstraction has 4040 states and 4754 transitions. [2020-07-17 13:17:48,171 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-17 13:17:48,171 INFO L276 IsEmpty]: Start isEmpty. Operand 4040 states and 4754 transitions. [2020-07-17 13:17:48,179 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 272 [2020-07-17 13:17:48,180 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 13:17:48,180 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-17 13:17:48,180 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-07-17 13:17:48,181 INFO L427 AbstractCegarLoop]: === Iteration 17 === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 13:17:48,181 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 13:17:48,181 INFO L82 PathProgramCache]: Analyzing trace with hash 360016174, now seen corresponding path program 1 times [2020-07-17 13:17:48,181 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-17 13:17:48,182 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1934655292] [2020-07-17 13:17:48,182 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 13:17:48,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:17:48,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:17:48,307 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-17 13:17:48,310 INFO L192 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-17 13:17:48,311 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1934655292] [2020-07-17 13:17:48,311 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-17 13:17:48,311 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-17 13:17:48,311 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [124282655] [2020-07-17 13:17:48,312 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-17 13:17:48,312 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-17 13:17:48,312 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-17 13:17:48,312 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-17 13:17:48,313 INFO L87 Difference]: Start difference. First operand 4040 states and 4754 transitions. Second operand 4 states. [2020-07-17 13:17:49,205 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 13:17:49,205 INFO L93 Difference]: Finished difference Result 8465 states and 10020 transitions. [2020-07-17 13:17:49,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-07-17 13:17:49,206 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 271 [2020-07-17 13:17:49,207 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 13:17:49,222 INFO L225 Difference]: With dead ends: 8465 [2020-07-17 13:17:49,222 INFO L226 Difference]: Without dead ends: 6494 [2020-07-17 13:17:49,227 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 10 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 13:17:49,234 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6494 states. [2020-07-17 13:17:49,563 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6494 to 4070. [2020-07-17 13:17:49,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4070 states. [2020-07-17 13:17:49,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4070 states to 4070 states and 4793 transitions. [2020-07-17 13:17:49,570 INFO L78 Accepts]: Start accepts. Automaton has 4070 states and 4793 transitions. Word has length 271 [2020-07-17 13:17:49,571 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 13:17:49,571 INFO L479 AbstractCegarLoop]: Abstraction has 4070 states and 4793 transitions. [2020-07-17 13:17:49,571 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-17 13:17:49,571 INFO L276 IsEmpty]: Start isEmpty. Operand 4070 states and 4793 transitions. [2020-07-17 13:17:49,578 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 272 [2020-07-17 13:17:49,578 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 13:17:49,579 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-17 13:17:49,579 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-07-17 13:17:49,579 INFO L427 AbstractCegarLoop]: === Iteration 18 === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 13:17:49,580 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 13:17:49,580 INFO L82 PathProgramCache]: Analyzing trace with hash 663575758, now seen corresponding path program 1 times [2020-07-17 13:17:49,580 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-17 13:17:49,580 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1779765274] [2020-07-17 13:17:49,581 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 13:17:49,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:17:49,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:17:49,691 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 13:17:49,693 INFO L192 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-17 13:17:49,693 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1779765274] [2020-07-17 13:17:49,693 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-17 13:17:49,694 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-17 13:17:49,694 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2122344212] [2020-07-17 13:17:49,694 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-17 13:17:49,695 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-17 13:17:49,695 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-17 13:17:49,695 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-17 13:17:49,695 INFO L87 Difference]: Start difference. First operand 4070 states and 4793 transitions. Second operand 4 states. [2020-07-17 13:17:50,739 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 13:17:50,739 INFO L93 Difference]: Finished difference Result 11247 states and 13651 transitions. [2020-07-17 13:17:50,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-07-17 13:17:50,740 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 271 [2020-07-17 13:17:50,741 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 13:17:50,756 INFO L225 Difference]: With dead ends: 11247 [2020-07-17 13:17:50,756 INFO L226 Difference]: Without dead ends: 7358 [2020-07-17 13:17:50,765 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 10 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 13:17:50,773 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7358 states. [2020-07-17 13:17:51,199 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7358 to 4556. [2020-07-17 13:17:51,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4556 states. [2020-07-17 13:17:51,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4556 states to 4556 states and 5378 transitions. [2020-07-17 13:17:51,207 INFO L78 Accepts]: Start accepts. Automaton has 4556 states and 5378 transitions. Word has length 271 [2020-07-17 13:17:51,208 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 13:17:51,208 INFO L479 AbstractCegarLoop]: Abstraction has 4556 states and 5378 transitions. [2020-07-17 13:17:51,208 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-17 13:17:51,208 INFO L276 IsEmpty]: Start isEmpty. Operand 4556 states and 5378 transitions. [2020-07-17 13:17:51,216 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 292 [2020-07-17 13:17:51,216 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 13:17:51,216 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-17 13:17:51,217 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-07-17 13:17:51,217 INFO L427 AbstractCegarLoop]: === Iteration 19 === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 13:17:51,217 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 13:17:51,217 INFO L82 PathProgramCache]: Analyzing trace with hash 651686925, now seen corresponding path program 1 times [2020-07-17 13:17:51,218 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-17 13:17:51,218 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [62940140] [2020-07-17 13:17:51,218 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 13:17:51,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:17:51,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:17:51,332 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 13:17:51,333 INFO L192 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-17 13:17:51,334 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [62940140] [2020-07-17 13:17:51,334 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-17 13:17:51,335 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-17 13:17:51,335 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2139482620] [2020-07-17 13:17:51,336 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-17 13:17:51,336 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-17 13:17:51,336 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-17 13:17:51,336 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-17 13:17:51,337 INFO L87 Difference]: Start difference. First operand 4556 states and 5378 transitions. Second operand 3 states. [2020-07-17 13:17:52,364 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 13:17:52,364 INFO L93 Difference]: Finished difference Result 9759 states and 11774 transitions. [2020-07-17 13:17:52,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-17 13:17:52,365 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 291 [2020-07-17 13:17:52,365 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 13:17:52,375 INFO L225 Difference]: With dead ends: 9759 [2020-07-17 13:17:52,376 INFO L226 Difference]: Without dead ends: 5372 [2020-07-17 13:17:52,386 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 13:17:52,391 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5372 states. [2020-07-17 13:17:52,750 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5372 to 5009. [2020-07-17 13:17:52,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5009 states. [2020-07-17 13:17:52,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5009 states to 5009 states and 5906 transitions. [2020-07-17 13:17:52,758 INFO L78 Accepts]: Start accepts. Automaton has 5009 states and 5906 transitions. Word has length 291 [2020-07-17 13:17:52,758 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 13:17:52,758 INFO L479 AbstractCegarLoop]: Abstraction has 5009 states and 5906 transitions. [2020-07-17 13:17:52,758 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-17 13:17:52,759 INFO L276 IsEmpty]: Start isEmpty. Operand 5009 states and 5906 transitions. [2020-07-17 13:17:52,766 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 294 [2020-07-17 13:17:52,767 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 13:17:52,767 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 5, 5, 4, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-17 13:17:52,767 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-07-17 13:17:52,768 INFO L427 AbstractCegarLoop]: === Iteration 20 === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 13:17:52,768 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 13:17:52,768 INFO L82 PathProgramCache]: Analyzing trace with hash -2093654891, now seen corresponding path program 1 times [2020-07-17 13:17:52,768 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-17 13:17:52,769 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2142009989] [2020-07-17 13:17:52,769 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 13:17:52,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:17:52,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:17:52,878 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 13:17:52,880 INFO L192 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-17 13:17:52,880 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2142009989] [2020-07-17 13:17:52,880 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-17 13:17:52,881 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-17 13:17:52,881 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [618736613] [2020-07-17 13:17:52,881 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-17 13:17:52,881 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-17 13:17:52,882 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-17 13:17:52,882 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-17 13:17:52,882 INFO L87 Difference]: Start difference. First operand 5009 states and 5906 transitions. Second operand 3 states. [2020-07-17 13:17:53,438 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 13:17:53,439 INFO L93 Difference]: Finished difference Result 9837 states and 11644 transitions. [2020-07-17 13:17:53,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-17 13:17:53,439 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 293 [2020-07-17 13:17:53,440 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 13:17:53,448 INFO L225 Difference]: With dead ends: 9837 [2020-07-17 13:17:53,448 INFO L226 Difference]: Without dead ends: 6611 [2020-07-17 13:17:53,455 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 13:17:53,460 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6611 states. [2020-07-17 13:17:53,976 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6611 to 6611. [2020-07-17 13:17:53,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6611 states. [2020-07-17 13:17:53,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6611 states to 6611 states and 7805 transitions. [2020-07-17 13:17:53,987 INFO L78 Accepts]: Start accepts. Automaton has 6611 states and 7805 transitions. Word has length 293 [2020-07-17 13:17:53,987 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 13:17:53,987 INFO L479 AbstractCegarLoop]: Abstraction has 6611 states and 7805 transitions. [2020-07-17 13:17:53,988 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-17 13:17:53,988 INFO L276 IsEmpty]: Start isEmpty. Operand 6611 states and 7805 transitions. [2020-07-17 13:17:53,997 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 299 [2020-07-17 13:17:53,997 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 13:17:53,997 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 5, 5, 4, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-17 13:17:53,997 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-07-17 13:17:53,998 INFO L427 AbstractCegarLoop]: === Iteration 21 === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 13:17:53,998 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 13:17:53,998 INFO L82 PathProgramCache]: Analyzing trace with hash -1985620780, now seen corresponding path program 1 times [2020-07-17 13:17:53,998 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-17 13:17:53,998 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [625722715] [2020-07-17 13:17:53,999 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 13:17:54,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:17:54,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:17:54,115 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 13:17:54,116 INFO L192 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-17 13:17:54,116 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [625722715] [2020-07-17 13:17:54,117 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-17 13:17:54,117 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-17 13:17:54,117 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1455926700] [2020-07-17 13:17:54,117 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-17 13:17:54,118 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-17 13:17:54,118 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-17 13:17:54,118 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-17 13:17:54,118 INFO L87 Difference]: Start difference. First operand 6611 states and 7805 transitions. Second operand 3 states. [2020-07-17 13:17:54,881 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 13:17:54,881 INFO L93 Difference]: Finished difference Result 12305 states and 14562 transitions. [2020-07-17 13:17:54,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-17 13:17:54,882 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 298 [2020-07-17 13:17:54,882 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 13:17:54,889 INFO L225 Difference]: With dead ends: 12305 [2020-07-17 13:17:54,889 INFO L226 Difference]: Without dead ends: 7477 [2020-07-17 13:17:54,900 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 13:17:54,906 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7477 states. [2020-07-17 13:17:55,360 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7477 to 7477. [2020-07-17 13:17:55,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7477 states. [2020-07-17 13:17:55,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7477 states to 7477 states and 8822 transitions. [2020-07-17 13:17:55,370 INFO L78 Accepts]: Start accepts. Automaton has 7477 states and 8822 transitions. Word has length 298 [2020-07-17 13:17:55,370 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 13:17:55,370 INFO L479 AbstractCegarLoop]: Abstraction has 7477 states and 8822 transitions. [2020-07-17 13:17:55,370 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-17 13:17:55,370 INFO L276 IsEmpty]: Start isEmpty. Operand 7477 states and 8822 transitions. [2020-07-17 13:17:55,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 300 [2020-07-17 13:17:55,378 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 13:17:55,379 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 5, 5, 4, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-17 13:17:55,379 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-07-17 13:17:55,379 INFO L427 AbstractCegarLoop]: === Iteration 22 === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 13:17:55,379 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 13:17:55,379 INFO L82 PathProgramCache]: Analyzing trace with hash -638739787, now seen corresponding path program 1 times [2020-07-17 13:17:55,380 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-17 13:17:55,380 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1119991550] [2020-07-17 13:17:55,380 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 13:17:55,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-17 13:17:55,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-17 13:17:55,600 INFO L192 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-17 13:17:55,600 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-07-17 13:17:55,600 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-07-17 13:17:55,602 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-07-17 13:17:55,636 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 17.07 01:17:55 BoogieIcfgContainer [2020-07-17 13:17:55,636 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-17 13:17:55,638 INFO L168 Benchmark]: Toolchain (without parser) took 22843.16 ms. Allocated memory was 145.2 MB in the beginning and 1.3 GB in the end (delta: 1.2 GB). Free memory was 102.4 MB in the beginning and 525.1 MB in the end (delta: -422.7 MB). Peak memory consumption was 771.7 MB. Max. memory is 7.1 GB. [2020-07-17 13:17:55,639 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 145.2 MB. Free memory was 121.9 MB in the beginning and 121.6 MB in the end (delta: 210.1 kB). Peak memory consumption was 210.1 kB. Max. memory is 7.1 GB. [2020-07-17 13:17:55,639 INFO L168 Benchmark]: CACSL2BoogieTranslator took 526.32 ms. Allocated memory was 145.2 MB in the beginning and 202.4 MB in the end (delta: 57.1 MB). Free memory was 102.0 MB in the beginning and 177.8 MB in the end (delta: -75.7 MB). Peak memory consumption was 22.8 MB. Max. memory is 7.1 GB. [2020-07-17 13:17:55,640 INFO L168 Benchmark]: Boogie Preprocessor took 53.95 ms. Allocated memory is still 202.4 MB. Free memory was 177.8 MB in the beginning and 175.0 MB in the end (delta: 2.8 MB). Peak memory consumption was 2.8 MB. Max. memory is 7.1 GB. [2020-07-17 13:17:55,641 INFO L168 Benchmark]: RCFGBuilder took 1015.99 ms. Allocated memory is still 202.4 MB. Free memory was 175.0 MB in the beginning and 107.3 MB in the end (delta: 67.7 MB). Peak memory consumption was 67.7 MB. Max. memory is 7.1 GB. [2020-07-17 13:17:55,641 INFO L168 Benchmark]: TraceAbstraction took 21240.36 ms. Allocated memory was 202.4 MB in the beginning and 1.3 GB in the end (delta: 1.1 GB). Free memory was 106.6 MB in the beginning and 525.1 MB in the end (delta: -418.5 MB). Peak memory consumption was 718.7 MB. Max. memory is 7.1 GB. [2020-07-17 13:17:55,644 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 145.2 MB. Free memory was 121.9 MB in the beginning and 121.6 MB in the end (delta: 210.1 kB). Peak memory consumption was 210.1 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 526.32 ms. Allocated memory was 145.2 MB in the beginning and 202.4 MB in the end (delta: 57.1 MB). Free memory was 102.0 MB in the beginning and 177.8 MB in the end (delta: -75.7 MB). Peak memory consumption was 22.8 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 53.95 ms. Allocated memory is still 202.4 MB. Free memory was 177.8 MB in the beginning and 175.0 MB in the end (delta: 2.8 MB). Peak memory consumption was 2.8 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1015.99 ms. Allocated memory is still 202.4 MB. Free memory was 175.0 MB in the beginning and 107.3 MB in the end (delta: 67.7 MB). Peak memory consumption was 67.7 MB. Max. memory is 7.1 GB. * TraceAbstraction took 21240.36 ms. Allocated memory was 202.4 MB in the beginning and 1.3 GB in the end (delta: 1.1 GB). Free memory was 106.6 MB in the beginning and 525.1 MB in the end (delta: -418.5 MB). Peak memory consumption was 718.7 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 573]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L578] int s ; [L582] s = 12292 [L583] CALL ssl3_connect(s) [L12] int s__info_callback = __VERIFIER_nondet_int() ; [L13] int s__in_handshake = __VERIFIER_nondet_int() ; [L14] int s__state ; [L15] int s__new_session ; [L16] int s__server ; [L17] int s__version = __VERIFIER_nondet_int() ; [L18] int s__type ; [L19] int s__init_num ; [L20] int s__bbio = __VERIFIER_nondet_int() ; [L21] int s__wbio = __VERIFIER_nondet_int() ; [L22] int s__hit = __VERIFIER_nondet_int() ; [L23] int s__rwstate ; [L24] int s__init_buf___0 = __VERIFIER_nondet_int() ; [L25] int s__debug = __VERIFIER_nondet_int() ; [L26] int s__shutdown ; [L27] int s__ctx__info_callback = __VERIFIER_nondet_int() ; [L28] int s__ctx__stats__sess_connect_renegotiate = __VERIFIER_nondet_int() ; [L29] int s__ctx__stats__sess_connect = __VERIFIER_nondet_int() ; [L30] int s__ctx__stats__sess_hit = __VERIFIER_nondet_int() ; [L31] int s__ctx__stats__sess_connect_good = __VERIFIER_nondet_int() ; [L32] int s__s3__change_cipher_spec ; [L33] int s__s3__flags = __VERIFIER_nondet_int() ; [L34] int s__s3__delay_buf_pop_ret ; [L35] int s__s3__tmp__cert_req = __VERIFIER_nondet_int() ; [L36] int s__s3__tmp__new_compression = __VERIFIER_nondet_int() ; [L37] int s__s3__tmp__reuse_message = __VERIFIER_nondet_int() ; [L38] int s__s3__tmp__new_cipher = __VERIFIER_nondet_int() ; [L39] int s__s3__tmp__new_cipher__algorithms = __VERIFIER_nondet_int() ; [L40] int s__s3__tmp__next_state___0 ; [L41] int s__s3__tmp__new_compression__id = __VERIFIER_nondet_int() ; [L42] int s__session__cipher ; [L43] int s__session__compress_meth ; [L44] int buf ; [L45] unsigned long tmp ; [L46] unsigned long l ; [L47] int num1 = __VERIFIER_nondet_int() ; [L48] int cb ; [L49] int ret ; [L50] int new_state ; [L51] int state ; [L52] int skip ; [L53] int tmp___0 ; [L54] int tmp___1 = __VERIFIER_nondet_int() ; [L55] int tmp___2 = __VERIFIER_nondet_int() ; [L56] int tmp___3 = __VERIFIER_nondet_int() ; [L57] int tmp___4 = __VERIFIER_nondet_int() ; [L58] int tmp___5 = __VERIFIER_nondet_int() ; [L59] int tmp___6 = __VERIFIER_nondet_int() ; [L60] int tmp___7 = __VERIFIER_nondet_int() ; [L61] int tmp___8 = __VERIFIER_nondet_int() ; [L62] int tmp___9 = __VERIFIER_nondet_int() ; [L63] int blastFlag ; [L64] int __cil_tmp55 ; [L65] void *__cil_tmp56 ; [L66] unsigned long __cil_tmp57 ; [L67] unsigned long __cil_tmp58 = __VERIFIER_nondet_ulong() ; [L68] void *__cil_tmp59 ; [L69] unsigned long __cil_tmp60 ; [L70] unsigned long __cil_tmp61 ; [L71] unsigned long __cil_tmp62 ; [L72] unsigned long __cil_tmp63 ; [L73] unsigned long __cil_tmp64 ; [L74] long __cil_tmp65 = __VERIFIER_nondet_long() ; [L75] long __cil_tmp66 ; [L76] long __cil_tmp67 ; [L77] long __cil_tmp68 ; [L78] long __cil_tmp69 ; [L79] long __cil_tmp70 = __VERIFIER_nondet_long() ; [L80] long __cil_tmp71 ; [L81] long __cil_tmp72 ; [L82] long __cil_tmp73 ; [L83] long __cil_tmp74 ; [L87] s__state = initial_state [L88] blastFlag = 0 [L89] tmp = __VERIFIER_nondet_int() [L90] cb = 0 [L91] ret = -1 [L92] skip = 0 [L93] tmp___0 = 0 [L94] COND TRUE s__info_callback != 0 [L95] cb = s__info_callback [L101] s__in_handshake ++ [L102] COND FALSE !(tmp___1 + 12288) [L108] COND TRUE 1 [L110] state = s__state [L111] COND TRUE s__state == 12292 [L213] s__new_session = 1 [L214] s__state = 4096 [L215] s__ctx__stats__sess_connect_renegotiate ++ [L220] s__server = 0 [L221] COND TRUE cb != 0 [L225] __cil_tmp55 = s__version + 65280 [L226] COND FALSE !(__cil_tmp55 != 768) [L231] s__type = 4096 [L233] __cil_tmp56 = (void *)0 [L234] __cil_tmp57 = (unsigned long )__cil_tmp56 [L235] __cil_tmp58 = (unsigned long )s__init_buf___0 [L236] COND FALSE !(__cil_tmp58 == __cil_tmp57) [L254] COND FALSE !(! tmp___4) [L258] COND FALSE !(! tmp___5) [L262] s__state = 4368 [L263] s__ctx__stats__sess_connect ++ [L264] s__init_num = 0 [L545] COND FALSE !(! s__s3__tmp__reuse_message) [L562] skip = 0 [L108] COND TRUE 1 [L110] state = s__state [L111] COND FALSE !(s__state == 12292) [L114] COND FALSE !(s__state == 16384) [L117] COND FALSE !(s__state == 4096) [L120] COND FALSE !(s__state == 20480) [L123] COND FALSE !(s__state == 4099) [L126] COND TRUE s__state == 4368 [L268] s__shutdown = 0 [L269] ret = __VERIFIER_nondet_int() [L270] COND TRUE blastFlag == 0 [L271] blastFlag = 1 [L273] COND FALSE !(ret <= 0) [L276] s__state = 4384 [L277] s__init_num = 0 [L279] __cil_tmp62 = (unsigned long )s__wbio [L280] __cil_tmp63 = (unsigned long )s__bbio [L281] COND TRUE __cil_tmp63 != __cil_tmp62 [L545] COND FALSE !(! s__s3__tmp__reuse_message) [L562] skip = 0 [L108] COND TRUE 1 [L110] state = s__state [L111] COND FALSE !(s__state == 12292) [L114] COND FALSE !(s__state == 16384) [L117] COND FALSE !(s__state == 4096) [L120] COND FALSE !(s__state == 20480) [L123] COND FALSE !(s__state == 4099) [L126] COND FALSE !(s__state == 4368) [L129] COND FALSE !(s__state == 4369) [L132] COND TRUE s__state == 4384 [L288] ret = __VERIFIER_nondet_int() [L289] COND TRUE blastFlag == 1 [L290] blastFlag = 2 [L296] COND FALSE !(ret <= 0) [L299] COND FALSE !(\read(s__hit)) [L302] s__state = 4400 [L304] s__init_num = 0 [L545] COND FALSE !(! s__s3__tmp__reuse_message) [L562] skip = 0 [L108] COND TRUE 1 [L110] state = s__state [L111] COND FALSE !(s__state == 12292) [L114] COND FALSE !(s__state == 16384) [L117] COND FALSE !(s__state == 4096) [L120] COND FALSE !(s__state == 20480) [L123] COND FALSE !(s__state == 4099) [L126] COND FALSE !(s__state == 4368) [L129] COND FALSE !(s__state == 4369) [L132] COND FALSE !(s__state == 4384) [L135] COND FALSE !(s__state == 4385) [L138] COND TRUE s__state == 4400 [L309] __cil_tmp64 = (unsigned long )s__s3__tmp__new_cipher__algorithms [L310] COND FALSE !(__cil_tmp64 + 256UL) [L313] ret = __VERIFIER_nondet_int() [L314] COND TRUE blastFlag == 2 [L315] blastFlag = 3 [L317] COND FALSE !(ret <= 0) [L322] s__state = 4416 [L323] s__init_num = 0 [L545] COND FALSE !(! s__s3__tmp__reuse_message) [L562] skip = 0 [L108] COND TRUE 1 [L110] state = s__state [L111] COND FALSE !(s__state == 12292) [L114] COND FALSE !(s__state == 16384) [L117] COND FALSE !(s__state == 4096) [L120] COND FALSE !(s__state == 20480) [L123] COND FALSE !(s__state == 4099) [L126] COND FALSE !(s__state == 4368) [L129] COND FALSE !(s__state == 4369) [L132] COND FALSE !(s__state == 4384) [L135] COND FALSE !(s__state == 4385) [L138] COND FALSE !(s__state == 4400) [L141] COND FALSE !(s__state == 4401) [L144] COND TRUE s__state == 4416 [L327] ret = __VERIFIER_nondet_int() [L328] COND TRUE blastFlag == 3 [L329] blastFlag = 4 [L331] COND FALSE !(ret <= 0) [L334] s__state = 4432 [L335] s__init_num = 0 [L336] COND FALSE !(! tmp___6) [L545] COND FALSE !(! s__s3__tmp__reuse_message) [L562] skip = 0 [L108] COND TRUE 1 [L110] state = s__state [L111] COND FALSE !(s__state == 12292) [L114] COND FALSE !(s__state == 16384) [L117] COND FALSE !(s__state == 4096) [L120] COND FALSE !(s__state == 20480) [L123] COND FALSE !(s__state == 4099) [L126] COND FALSE !(s__state == 4368) [L129] COND FALSE !(s__state == 4369) [L132] COND FALSE !(s__state == 4384) [L135] COND FALSE !(s__state == 4385) [L138] COND FALSE !(s__state == 4400) [L141] COND FALSE !(s__state == 4401) [L144] COND FALSE !(s__state == 4416) [L147] COND FALSE !(s__state == 4417) [L150] COND TRUE s__state == 4432 [L343] ret = __VERIFIER_nondet_int() [L344] COND TRUE blastFlag == 4 [L573] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 414 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 21.1s, OverallIterations: 22, TraceHistogramMax: 6, AutomataDifference: 11.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 10117 SDtfs, 6107 SDslu, 10369 SDs, 0 SdLazy, 2304 SolverSat, 326 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 2.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 607 GetRequests, 545 SyntacticMatches, 15 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=7477occurred in iteration=21, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 5.9s AutomataMinimizationTime, 21 MinimizatonAttempts, 8171 StatesRemovedByMinimization, 17 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: No data available, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...