/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 0.1.25-86f66a4 [2020-07-07 13:20:47,883 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-07 13:20:47,886 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-07 13:20:47,899 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-07 13:20:47,899 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-07 13:20:47,901 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-07 13:20:47,902 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-07 13:20:47,904 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-07 13:20:47,906 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-07 13:20:47,907 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-07 13:20:47,908 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-07 13:20:47,909 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-07 13:20:47,909 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-07 13:20:47,911 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-07 13:20:47,912 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-07 13:20:47,913 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-07 13:20:47,914 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-07 13:20:47,914 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-07 13:20:47,916 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-07 13:20:47,918 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-07 13:20:47,920 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-07 13:20:47,921 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-07 13:20:47,922 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-07 13:20:47,923 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-07 13:20:47,925 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-07-07 13:20:47,933 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-07 13:20:47,934 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-07 13:20:47,935 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-07 13:20:47,935 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2020-07-07 13:20:47,948 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-07 13:20:47,949 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-07 13:20:47,952 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-07 13:20:47,953 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-07 13:20:47,953 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-07 13:20:47,953 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-07 13:20:47,953 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-07 13:20:47,953 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-07 13:20:47,953 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-07 13:20:47,954 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-07 13:20:47,954 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-07 13:20:47,954 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-07 13:20:47,955 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-07 13:20:47,956 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-07 13:20:47,956 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-07 13:20:47,956 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-07-07 13:20:47,956 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-07 13:20:47,956 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-07 13:20:47,957 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-07 13:20:47,957 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-07 13:20:47,957 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-07-07 13:20:47,958 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-07 13:20:47,958 INFO L138 SettingsManager]: * Use separate solver for trace checks=false [2020-07-07 13:20:48,264 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-07 13:20:48,281 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-07 13:20:48,284 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-07 13:20:48,285 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-07 13:20:48,286 INFO L275 PluginConnector]: CDTParser initialized [2020-07-07 13:20:48,286 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ssh-simplified/s3_clnt_3.cil-2.c [2020-07-07 13:20:48,357 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4e41ead9d/3ca9746cd26245cb897fff0df3f00a29/FLAGbed1662cb [2020-07-07 13:20:48,826 INFO L306 CDTParser]: Found 1 translation units. [2020-07-07 13:20:48,827 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ssh-simplified/s3_clnt_3.cil-2.c [2020-07-07 13:20:48,839 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4e41ead9d/3ca9746cd26245cb897fff0df3f00a29/FLAGbed1662cb [2020-07-07 13:20:49,170 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4e41ead9d/3ca9746cd26245cb897fff0df3f00a29 [2020-07-07 13:20:49,179 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-07 13:20:49,181 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-07 13:20:49,183 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-07 13:20:49,183 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-07 13:20:49,187 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-07 13:20:49,188 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.07 01:20:49" (1/1) ... [2020-07-07 13:20:49,191 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@48622edc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 01:20:49, skipping insertion in model container [2020-07-07 13:20:49,191 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.07 01:20:49" (1/1) ... [2020-07-07 13:20:49,200 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-07 13:20:49,241 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-07 13:20:49,524 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-07 13:20:49,529 INFO L203 MainTranslator]: Completed pre-run [2020-07-07 13:20:49,742 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-07 13:20:49,774 INFO L208 MainTranslator]: Completed translation [2020-07-07 13:20:49,774 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 01:20:49 WrapperNode [2020-07-07 13:20:49,774 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-07 13:20:49,775 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-07 13:20:49,776 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-07 13:20:49,776 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-07 13:20:49,793 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 01:20:49" (1/1) ... [2020-07-07 13:20:49,793 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 01:20:49" (1/1) ... [2020-07-07 13:20:49,819 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 01:20:49" (1/1) ... [2020-07-07 13:20:49,823 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 01:20:49" (1/1) ... [2020-07-07 13:20:49,854 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 01:20:49" (1/1) ... [2020-07-07 13:20:49,873 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 01:20:49" (1/1) ... [2020-07-07 13:20:49,876 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 01:20:49" (1/1) ... [2020-07-07 13:20:49,880 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-07 13:20:49,880 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-07 13:20:49,881 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-07 13:20:49,881 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-07 13:20:49,882 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 01:20:49" (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 [2020-07-07 13:20:49,948 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-07 13:20:49,948 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-07 13:20:49,948 INFO L138 BoogieDeclarations]: Found implementation of procedure ssl3_connect [2020-07-07 13:20:49,948 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-07 13:20:49,948 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-07 13:20:49,949 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-07-07 13:20:49,949 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-07-07 13:20:49,949 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_long [2020-07-07 13:20:49,949 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_ulong [2020-07-07 13:20:49,949 INFO L130 BoogieDeclarations]: Found specification of procedure ssl3_connect [2020-07-07 13:20:49,950 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-07 13:20:49,950 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-07 13:20:49,951 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-07 13:20:50,094 WARN L775 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-07-07 13:20:50,834 INFO L728 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##85: assume !false; [2020-07-07 13:20:50,834 INFO L728 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##84: assume false; [2020-07-07 13:20:50,861 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-07 13:20:50,861 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-07-07 13:20:50,869 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.07 01:20:50 BoogieIcfgContainer [2020-07-07 13:20:50,869 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-07 13:20:50,871 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-07 13:20:50,871 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-07 13:20:50,875 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-07 13:20:50,876 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.07 01:20:49" (1/3) ... [2020-07-07 13:20:50,877 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5ac85bf3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.07 01:20:50, skipping insertion in model container [2020-07-07 13:20:50,877 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 01:20:49" (2/3) ... [2020-07-07 13:20:50,877 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5ac85bf3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.07 01:20:50, skipping insertion in model container [2020-07-07 13:20:50,878 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.07 01:20:50" (3/3) ... [2020-07-07 13:20:50,880 INFO L109 eAbstractionObserver]: Analyzing ICFG s3_clnt_3.cil-2.c [2020-07-07 13:20:50,893 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-07-07 13:20:50,903 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-07 13:20:50,921 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-07 13:20:50,947 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-07 13:20:50,948 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-07 13:20:50,948 INFO L377 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2020-07-07 13:20:50,949 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-07 13:20:50,949 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-07 13:20:50,949 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-07 13:20:50,949 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-07 13:20:50,950 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-07 13:20:50,975 INFO L276 IsEmpty]: Start isEmpty. Operand 414 states. [2020-07-07 13:20:50,998 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2020-07-07 13:20:50,999 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 13:20:51,000 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] [2020-07-07 13:20:51,001 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 13:20:51,008 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 13:20:51,009 INFO L82 PathProgramCache]: Analyzing trace with hash 44117518, now seen corresponding path program 1 times [2020-07-07 13:20:51,019 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 13:20:51,020 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1325068215] [2020-07-07 13:20:51,020 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 13:20:51,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:20:51,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:20:51,580 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 13:20:51,581 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-07 13:20:51,583 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1325068215] [2020-07-07 13:20:51,586 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 13:20:51,587 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-07-07 13:20:51,587 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [89069647] [2020-07-07 13:20:51,594 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-07-07 13:20:51,594 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-07 13:20:51,610 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-07-07 13:20:51,611 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-07-07 13:20:51,613 INFO L87 Difference]: Start difference. First operand 414 states. Second operand 6 states. [2020-07-07 13:20:52,151 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 13:20:52,152 INFO L93 Difference]: Finished difference Result 733 states and 948 transitions. [2020-07-07 13:20:52,153 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-07-07 13:20:52,154 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 181 [2020-07-07 13:20:52,156 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 13:20:52,174 INFO L225 Difference]: With dead ends: 733 [2020-07-07 13:20:52,175 INFO L226 Difference]: Without dead ends: 399 [2020-07-07 13:20:52,182 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-07-07 13:20:52,207 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 399 states. [2020-07-07 13:20:52,310 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 399 to 378. [2020-07-07 13:20:52,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 378 states. [2020-07-07 13:20:52,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 378 states to 378 states and 437 transitions. [2020-07-07 13:20:52,316 INFO L78 Accepts]: Start accepts. Automaton has 378 states and 437 transitions. Word has length 181 [2020-07-07 13:20:52,317 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 13:20:52,317 INFO L479 AbstractCegarLoop]: Abstraction has 378 states and 437 transitions. [2020-07-07 13:20:52,317 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-07-07 13:20:52,318 INFO L276 IsEmpty]: Start isEmpty. Operand 378 states and 437 transitions. [2020-07-07 13:20:52,321 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 204 [2020-07-07 13:20:52,321 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 13:20:52,322 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] [2020-07-07 13:20:52,322 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-07-07 13:20:52,323 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 13:20:52,323 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 13:20:52,323 INFO L82 PathProgramCache]: Analyzing trace with hash 1543076850, now seen corresponding path program 1 times [2020-07-07 13:20:52,323 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 13:20:52,324 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1341933618] [2020-07-07 13:20:52,324 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 13:20:52,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:20:52,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:20:52,687 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 13:20:52,687 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-07 13:20:52,688 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1341933618] [2020-07-07 13:20:52,688 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 13:20:52,688 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-07-07 13:20:52,689 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [942804789] [2020-07-07 13:20:52,690 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-07-07 13:20:52,690 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-07 13:20:52,691 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-07-07 13:20:52,691 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-07-07 13:20:52,691 INFO L87 Difference]: Start difference. First operand 378 states and 437 transitions. Second operand 6 states. [2020-07-07 13:20:53,081 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 13:20:53,081 INFO L93 Difference]: Finished difference Result 654 states and 804 transitions. [2020-07-07 13:20:53,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-07-07 13:20:53,082 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 203 [2020-07-07 13:20:53,083 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 13:20:53,087 INFO L225 Difference]: With dead ends: 654 [2020-07-07 13:20:53,087 INFO L226 Difference]: Without dead ends: 442 [2020-07-07 13:20:53,090 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-07-07 13:20:53,092 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 442 states. [2020-07-07 13:20:53,138 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 442 to 391. [2020-07-07 13:20:53,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 391 states. [2020-07-07 13:20:53,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 391 states to 391 states and 455 transitions. [2020-07-07 13:20:53,140 INFO L78 Accepts]: Start accepts. Automaton has 391 states and 455 transitions. Word has length 203 [2020-07-07 13:20:53,141 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 13:20:53,141 INFO L479 AbstractCegarLoop]: Abstraction has 391 states and 455 transitions. [2020-07-07 13:20:53,141 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-07-07 13:20:53,142 INFO L276 IsEmpty]: Start isEmpty. Operand 391 states and 455 transitions. [2020-07-07 13:20:53,144 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 208 [2020-07-07 13:20:53,144 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 13:20:53,145 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] [2020-07-07 13:20:53,145 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-07-07 13:20:53,145 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 13:20:53,146 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 13:20:53,146 INFO L82 PathProgramCache]: Analyzing trace with hash 1125063182, now seen corresponding path program 1 times [2020-07-07 13:20:53,146 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 13:20:53,146 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1551238191] [2020-07-07 13:20:53,147 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 13:20:53,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:20:53,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:20:53,317 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 13:20:53,317 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-07 13:20:53,318 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1551238191] [2020-07-07 13:20:53,318 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 13:20:53,319 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-07 13:20:53,319 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [605699980] [2020-07-07 13:20:53,320 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-07 13:20:53,322 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-07 13:20:53,322 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-07 13:20:53,323 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-07 13:20:53,323 INFO L87 Difference]: Start difference. First operand 391 states and 455 transitions. Second operand 3 states. [2020-07-07 13:20:53,600 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 13:20:53,601 INFO L93 Difference]: Finished difference Result 644 states and 778 transitions. [2020-07-07 13:20:53,601 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-07 13:20:53,602 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 207 [2020-07-07 13:20:53,603 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 13:20:53,609 INFO L225 Difference]: With dead ends: 644 [2020-07-07 13:20:53,611 INFO L226 Difference]: Without dead ends: 419 [2020-07-07 13:20:53,617 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-07 13:20:53,619 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 419 states. [2020-07-07 13:20:53,682 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 419 to 409. [2020-07-07 13:20:53,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 409 states. [2020-07-07 13:20:53,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 409 states to 409 states and 478 transitions. [2020-07-07 13:20:53,686 INFO L78 Accepts]: Start accepts. Automaton has 409 states and 478 transitions. Word has length 207 [2020-07-07 13:20:53,687 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 13:20:53,688 INFO L479 AbstractCegarLoop]: Abstraction has 409 states and 478 transitions. [2020-07-07 13:20:53,688 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-07 13:20:53,688 INFO L276 IsEmpty]: Start isEmpty. Operand 409 states and 478 transitions. [2020-07-07 13:20:53,694 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 215 [2020-07-07 13:20:53,695 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 13:20:53,696 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] [2020-07-07 13:20:53,696 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-07-07 13:20:53,696 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 13:20:53,697 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 13:20:53,697 INFO L82 PathProgramCache]: Analyzing trace with hash -144330786, now seen corresponding path program 1 times [2020-07-07 13:20:53,698 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 13:20:53,698 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [89865103] [2020-07-07 13:20:53,698 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 13:20:53,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:20:53,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:20:54,008 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 13:20:54,008 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-07 13:20:54,009 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [89865103] [2020-07-07 13:20:54,009 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 13:20:54,010 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-07 13:20:54,011 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1171220829] [2020-07-07 13:20:54,012 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-07 13:20:54,012 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-07 13:20:54,013 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-07 13:20:54,013 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-07 13:20:54,014 INFO L87 Difference]: Start difference. First operand 409 states and 478 transitions. Second operand 3 states. [2020-07-07 13:20:54,178 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 13:20:54,179 INFO L93 Difference]: Finished difference Result 888 states and 1088 transitions. [2020-07-07 13:20:54,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-07 13:20:54,180 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 214 [2020-07-07 13:20:54,181 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 13:20:54,187 INFO L225 Difference]: With dead ends: 888 [2020-07-07 13:20:54,187 INFO L226 Difference]: Without dead ends: 645 [2020-07-07 13:20:54,190 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-07 13:20:54,193 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 645 states. [2020-07-07 13:20:54,283 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 645 to 645. [2020-07-07 13:20:54,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 645 states. [2020-07-07 13:20:54,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 645 states to 645 states and 775 transitions. [2020-07-07 13:20:54,288 INFO L78 Accepts]: Start accepts. Automaton has 645 states and 775 transitions. Word has length 214 [2020-07-07 13:20:54,289 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 13:20:54,289 INFO L479 AbstractCegarLoop]: Abstraction has 645 states and 775 transitions. [2020-07-07 13:20:54,289 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-07 13:20:54,289 INFO L276 IsEmpty]: Start isEmpty. Operand 645 states and 775 transitions. [2020-07-07 13:20:54,293 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 230 [2020-07-07 13:20:54,293 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 13:20:54,294 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] [2020-07-07 13:20:54,294 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-07-07 13:20:54,294 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 13:20:54,295 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 13:20:54,295 INFO L82 PathProgramCache]: Analyzing trace with hash 1130092021, now seen corresponding path program 1 times [2020-07-07 13:20:54,296 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 13:20:54,296 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [91859044] [2020-07-07 13:20:54,297 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 13:20:54,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:20:54,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:20:54,493 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 13:20:54,494 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-07 13:20:54,494 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [91859044] [2020-07-07 13:20:54,494 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 13:20:54,495 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-07 13:20:54,495 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2006652774] [2020-07-07 13:20:54,495 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-07 13:20:54,496 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-07 13:20:54,496 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-07 13:20:54,496 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-07 13:20:54,496 INFO L87 Difference]: Start difference. First operand 645 states and 775 transitions. Second operand 3 states. [2020-07-07 13:20:54,718 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 13:20:54,718 INFO L93 Difference]: Finished difference Result 1188 states and 1470 transitions. [2020-07-07 13:20:54,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-07 13:20:54,719 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 229 [2020-07-07 13:20:54,719 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 13:20:54,723 INFO L225 Difference]: With dead ends: 1188 [2020-07-07 13:20:54,724 INFO L226 Difference]: Without dead ends: 709 [2020-07-07 13:20:54,725 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-07 13:20:54,728 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 709 states. [2020-07-07 13:20:54,785 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 709 to 685. [2020-07-07 13:20:54,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 685 states. [2020-07-07 13:20:54,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 685 states to 685 states and 825 transitions. [2020-07-07 13:20:54,789 INFO L78 Accepts]: Start accepts. Automaton has 685 states and 825 transitions. Word has length 229 [2020-07-07 13:20:54,790 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 13:20:54,790 INFO L479 AbstractCegarLoop]: Abstraction has 685 states and 825 transitions. [2020-07-07 13:20:54,790 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-07 13:20:54,790 INFO L276 IsEmpty]: Start isEmpty. Operand 685 states and 825 transitions. [2020-07-07 13:20:54,794 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 237 [2020-07-07 13:20:54,794 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 13:20:54,794 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] [2020-07-07 13:20:54,794 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-07-07 13:20:54,795 INFO L427 AbstractCegarLoop]: === Iteration 6 === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 13:20:54,795 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 13:20:54,795 INFO L82 PathProgramCache]: Analyzing trace with hash -2121264617, now seen corresponding path program 1 times [2020-07-07 13:20:54,796 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 13:20:54,796 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [272562707] [2020-07-07 13:20:54,796 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 13:20:54,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:20:54,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:20:54,927 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 13:20:54,927 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-07 13:20:54,928 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [272562707] [2020-07-07 13:20:54,929 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 13:20:54,929 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-07 13:20:54,930 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1253142778] [2020-07-07 13:20:54,931 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-07 13:20:54,931 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-07 13:20:54,931 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-07 13:20:54,932 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-07 13:20:54,932 INFO L87 Difference]: Start difference. First operand 685 states and 825 transitions. Second operand 3 states. [2020-07-07 13:20:55,074 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 13:20:55,074 INFO L93 Difference]: Finished difference Result 1653 states and 2033 transitions. [2020-07-07 13:20:55,075 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-07 13:20:55,075 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 236 [2020-07-07 13:20:55,076 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 13:20:55,085 INFO L225 Difference]: With dead ends: 1653 [2020-07-07 13:20:55,085 INFO L226 Difference]: Without dead ends: 1134 [2020-07-07 13:20:55,088 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-07 13:20:55,091 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1134 states. [2020-07-07 13:20:55,231 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1134 to 1132. [2020-07-07 13:20:55,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1132 states. [2020-07-07 13:20:55,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1132 states to 1132 states and 1369 transitions. [2020-07-07 13:20:55,242 INFO L78 Accepts]: Start accepts. Automaton has 1132 states and 1369 transitions. Word has length 236 [2020-07-07 13:20:55,243 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 13:20:55,243 INFO L479 AbstractCegarLoop]: Abstraction has 1132 states and 1369 transitions. [2020-07-07 13:20:55,252 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-07 13:20:55,252 INFO L276 IsEmpty]: Start isEmpty. Operand 1132 states and 1369 transitions. [2020-07-07 13:20:55,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 238 [2020-07-07 13:20:55,263 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 13:20:55,264 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] [2020-07-07 13:20:55,264 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-07-07 13:20:55,265 INFO L427 AbstractCegarLoop]: === Iteration 7 === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 13:20:55,265 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 13:20:55,265 INFO L82 PathProgramCache]: Analyzing trace with hash -1692173170, now seen corresponding path program 1 times [2020-07-07 13:20:55,266 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 13:20:55,267 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [998497349] [2020-07-07 13:20:55,268 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 13:20:55,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:20:55,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:20:55,549 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 13:20:55,550 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-07 13:20:55,550 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [998497349] [2020-07-07 13:20:55,551 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 13:20:55,551 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-07 13:20:55,551 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [335966017] [2020-07-07 13:20:55,552 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-07 13:20:55,552 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-07 13:20:55,553 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-07 13:20:55,554 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-07 13:20:55,555 INFO L87 Difference]: Start difference. First operand 1132 states and 1369 transitions. Second operand 3 states. [2020-07-07 13:20:55,752 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 13:20:55,752 INFO L93 Difference]: Finished difference Result 2116 states and 2590 transitions. [2020-07-07 13:20:55,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-07 13:20:55,753 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 237 [2020-07-07 13:20:55,754 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 13:20:55,763 INFO L225 Difference]: With dead ends: 2116 [2020-07-07 13:20:55,764 INFO L226 Difference]: Without dead ends: 1150 [2020-07-07 13:20:55,767 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-07 13:20:55,770 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1150 states. [2020-07-07 13:20:55,926 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1150 to 1140. [2020-07-07 13:20:55,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1140 states. [2020-07-07 13:20:55,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1140 states to 1140 states and 1373 transitions. [2020-07-07 13:20:55,936 INFO L78 Accepts]: Start accepts. Automaton has 1140 states and 1373 transitions. Word has length 237 [2020-07-07 13:20:55,937 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 13:20:55,937 INFO L479 AbstractCegarLoop]: Abstraction has 1140 states and 1373 transitions. [2020-07-07 13:20:55,937 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-07 13:20:55,937 INFO L276 IsEmpty]: Start isEmpty. Operand 1140 states and 1373 transitions. [2020-07-07 13:20:55,946 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 240 [2020-07-07 13:20:55,946 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 13:20:55,947 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] [2020-07-07 13:20:55,947 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-07-07 13:20:55,947 INFO L427 AbstractCegarLoop]: === Iteration 8 === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 13:20:55,948 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 13:20:55,948 INFO L82 PathProgramCache]: Analyzing trace with hash 1154899678, now seen corresponding path program 1 times [2020-07-07 13:20:55,949 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 13:20:55,951 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1973871169] [2020-07-07 13:20:55,951 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 13:20:56,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:20:56,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:20:56,173 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 13:20:56,173 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-07 13:20:56,173 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1973871169] [2020-07-07 13:20:56,174 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 13:20:56,174 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-07 13:20:56,174 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1417508006] [2020-07-07 13:20:56,175 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-07 13:20:56,175 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-07 13:20:56,175 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-07 13:20:56,176 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-07 13:20:56,176 INFO L87 Difference]: Start difference. First operand 1140 states and 1373 transitions. Second operand 3 states. [2020-07-07 13:20:56,549 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 13:20:56,550 INFO L93 Difference]: Finished difference Result 3074 states and 3757 transitions. [2020-07-07 13:20:56,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-07 13:20:56,550 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 239 [2020-07-07 13:20:56,551 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 13:20:56,562 INFO L225 Difference]: With dead ends: 3074 [2020-07-07 13:20:56,563 INFO L226 Difference]: Without dead ends: 2100 [2020-07-07 13:20:56,566 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-07 13:20:56,569 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2100 states. [2020-07-07 13:20:56,791 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2100 to 2098. [2020-07-07 13:20:56,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2098 states. [2020-07-07 13:20:56,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2098 states to 2098 states and 2541 transitions. [2020-07-07 13:20:56,802 INFO L78 Accepts]: Start accepts. Automaton has 2098 states and 2541 transitions. Word has length 239 [2020-07-07 13:20:56,803 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 13:20:56,803 INFO L479 AbstractCegarLoop]: Abstraction has 2098 states and 2541 transitions. [2020-07-07 13:20:56,803 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-07 13:20:56,803 INFO L276 IsEmpty]: Start isEmpty. Operand 2098 states and 2541 transitions. [2020-07-07 13:20:56,808 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 240 [2020-07-07 13:20:56,808 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 13:20:56,809 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] [2020-07-07 13:20:56,809 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-07-07 13:20:56,809 INFO L427 AbstractCegarLoop]: === Iteration 9 === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 13:20:56,809 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 13:20:56,810 INFO L82 PathProgramCache]: Analyzing trace with hash -1231609828, now seen corresponding path program 1 times [2020-07-07 13:20:56,810 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 13:20:56,810 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [682005196] [2020-07-07 13:20:56,811 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 13:20:56,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:20:56,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:20:56,944 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 13:20:56,944 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-07 13:20:56,945 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [682005196] [2020-07-07 13:20:56,945 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 13:20:56,945 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-07 13:20:56,950 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [762832616] [2020-07-07 13:20:56,951 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-07 13:20:56,951 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-07 13:20:56,951 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-07 13:20:56,952 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-07 13:20:56,953 INFO L87 Difference]: Start difference. First operand 2098 states and 2541 transitions. Second operand 3 states. [2020-07-07 13:20:57,259 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 13:20:57,260 INFO L93 Difference]: Finished difference Result 3089 states and 3751 transitions. [2020-07-07 13:20:57,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-07 13:20:57,261 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 239 [2020-07-07 13:20:57,262 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 13:20:57,280 INFO L225 Difference]: With dead ends: 3089 [2020-07-07 13:20:57,280 INFO L226 Difference]: Without dead ends: 2115 [2020-07-07 13:20:57,285 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-07 13:20:57,289 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2115 states. [2020-07-07 13:20:57,509 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2115 to 2113. [2020-07-07 13:20:57,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2113 states. [2020-07-07 13:20:57,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2113 states to 2113 states and 2547 transitions. [2020-07-07 13:20:57,521 INFO L78 Accepts]: Start accepts. Automaton has 2113 states and 2547 transitions. Word has length 239 [2020-07-07 13:20:57,522 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 13:20:57,522 INFO L479 AbstractCegarLoop]: Abstraction has 2113 states and 2547 transitions. [2020-07-07 13:20:57,522 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-07 13:20:57,522 INFO L276 IsEmpty]: Start isEmpty. Operand 2113 states and 2547 transitions. [2020-07-07 13:20:57,528 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 241 [2020-07-07 13:20:57,532 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 13:20:57,532 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] [2020-07-07 13:20:57,532 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-07-07 13:20:57,533 INFO L427 AbstractCegarLoop]: === Iteration 10 === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 13:20:57,533 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 13:20:57,536 INFO L82 PathProgramCache]: Analyzing trace with hash -2054606457, now seen corresponding path program 1 times [2020-07-07 13:20:57,536 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 13:20:57,536 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1009908843] [2020-07-07 13:20:57,537 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 13:20:57,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:20:57,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:20:57,661 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 13:20:57,661 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-07 13:20:57,662 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1009908843] [2020-07-07 13:20:57,662 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 13:20:57,662 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-07 13:20:57,662 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [854634830] [2020-07-07 13:20:57,663 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-07 13:20:57,663 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-07 13:20:57,663 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-07 13:20:57,664 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-07 13:20:57,664 INFO L87 Difference]: Start difference. First operand 2113 states and 2547 transitions. Second operand 3 states. [2020-07-07 13:20:58,105 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 13:20:58,105 INFO L93 Difference]: Finished difference Result 4045 states and 4926 transitions. [2020-07-07 13:20:58,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-07 13:20:58,106 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 240 [2020-07-07 13:20:58,107 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 13:20:58,124 INFO L225 Difference]: With dead ends: 4045 [2020-07-07 13:20:58,125 INFO L226 Difference]: Without dead ends: 3068 [2020-07-07 13:20:58,130 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-07 13:20:58,137 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3068 states. [2020-07-07 13:20:58,436 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3068 to 3068. [2020-07-07 13:20:58,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3068 states. [2020-07-07 13:20:58,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3068 states to 3068 states and 3710 transitions. [2020-07-07 13:20:58,454 INFO L78 Accepts]: Start accepts. Automaton has 3068 states and 3710 transitions. Word has length 240 [2020-07-07 13:20:58,454 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 13:20:58,454 INFO L479 AbstractCegarLoop]: Abstraction has 3068 states and 3710 transitions. [2020-07-07 13:20:58,455 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-07 13:20:58,455 INFO L276 IsEmpty]: Start isEmpty. Operand 3068 states and 3710 transitions. [2020-07-07 13:20:58,462 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 251 [2020-07-07 13:20:58,462 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 13:20:58,462 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] [2020-07-07 13:20:58,463 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-07-07 13:20:58,463 INFO L427 AbstractCegarLoop]: === Iteration 11 === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 13:20:58,463 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 13:20:58,463 INFO L82 PathProgramCache]: Analyzing trace with hash 1762569168, now seen corresponding path program 1 times [2020-07-07 13:20:58,464 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 13:20:58,464 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1115787376] [2020-07-07 13:20:58,464 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 13:20:58,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:20:58,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:20:58,649 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 13:20:58,649 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-07 13:20:58,650 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1115787376] [2020-07-07 13:20:58,650 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 13:20:58,650 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-07 13:20:58,650 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [408868262] [2020-07-07 13:20:58,651 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-07 13:20:58,652 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-07 13:20:58,652 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-07 13:20:58,652 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-07 13:20:58,652 INFO L87 Difference]: Start difference. First operand 3068 states and 3710 transitions. Second operand 3 states. [2020-07-07 13:20:59,336 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 13:20:59,336 INFO L93 Difference]: Finished difference Result 6702 states and 8354 transitions. [2020-07-07 13:20:59,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-07 13:20:59,337 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 250 [2020-07-07 13:20:59,337 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 13:20:59,357 INFO L225 Difference]: With dead ends: 6702 [2020-07-07 13:20:59,358 INFO L226 Difference]: Without dead ends: 3803 [2020-07-07 13:20:59,366 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-07 13:20:59,372 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3803 states. [2020-07-07 13:20:59,713 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3803 to 3545. [2020-07-07 13:20:59,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3545 states. [2020-07-07 13:20:59,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3545 states to 3545 states and 4226 transitions. [2020-07-07 13:20:59,728 INFO L78 Accepts]: Start accepts. Automaton has 3545 states and 4226 transitions. Word has length 250 [2020-07-07 13:20:59,729 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 13:20:59,729 INFO L479 AbstractCegarLoop]: Abstraction has 3545 states and 4226 transitions. [2020-07-07 13:20:59,729 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-07 13:20:59,729 INFO L276 IsEmpty]: Start isEmpty. Operand 3545 states and 4226 transitions. [2020-07-07 13:20:59,740 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 251 [2020-07-07 13:20:59,741 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 13:20:59,741 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] [2020-07-07 13:20:59,741 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-07-07 13:20:59,742 INFO L427 AbstractCegarLoop]: === Iteration 12 === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 13:20:59,742 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 13:20:59,742 INFO L82 PathProgramCache]: Analyzing trace with hash -81032144, now seen corresponding path program 1 times [2020-07-07 13:20:59,742 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 13:20:59,744 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1203132458] [2020-07-07 13:20:59,744 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 13:20:59,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:20:59,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:20:59,868 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 13:20:59,869 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-07 13:20:59,869 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1203132458] [2020-07-07 13:20:59,870 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 13:20:59,870 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-07 13:20:59,870 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1929914384] [2020-07-07 13:20:59,871 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-07 13:20:59,871 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-07 13:20:59,871 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-07 13:20:59,872 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-07 13:20:59,872 INFO L87 Difference]: Start difference. First operand 3545 states and 4226 transitions. Second operand 3 states. [2020-07-07 13:21:00,327 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 13:21:00,328 INFO L93 Difference]: Finished difference Result 7246 states and 8728 transitions. [2020-07-07 13:21:00,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-07 13:21:00,328 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 250 [2020-07-07 13:21:00,329 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 13:21:00,349 INFO L225 Difference]: With dead ends: 7246 [2020-07-07 13:21:00,350 INFO L226 Difference]: Without dead ends: 3882 [2020-07-07 13:21:00,360 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-07 13:21:00,366 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3882 states. [2020-07-07 13:21:00,891 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3882 to 3758. [2020-07-07 13:21:00,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3758 states. [2020-07-07 13:21:00,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3758 states to 3758 states and 4454 transitions. [2020-07-07 13:21:00,910 INFO L78 Accepts]: Start accepts. Automaton has 3758 states and 4454 transitions. Word has length 250 [2020-07-07 13:21:00,911 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 13:21:00,911 INFO L479 AbstractCegarLoop]: Abstraction has 3758 states and 4454 transitions. [2020-07-07 13:21:00,911 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-07 13:21:00,912 INFO L276 IsEmpty]: Start isEmpty. Operand 3758 states and 4454 transitions. [2020-07-07 13:21:00,926 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 266 [2020-07-07 13:21:00,927 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 13:21:00,927 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] [2020-07-07 13:21:00,928 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-07-07 13:21:00,928 INFO L427 AbstractCegarLoop]: === Iteration 13 === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 13:21:00,929 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 13:21:00,929 INFO L82 PathProgramCache]: Analyzing trace with hash 713835900, now seen corresponding path program 1 times [2020-07-07 13:21:00,929 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 13:21:00,930 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2142465424] [2020-07-07 13:21:00,930 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 13:21:00,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:21:01,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:21:01,111 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 13:21:01,112 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-07 13:21:01,113 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2142465424] [2020-07-07 13:21:01,113 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 13:21:01,113 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-07 13:21:01,114 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1759740531] [2020-07-07 13:21:01,114 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-07 13:21:01,115 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-07 13:21:01,115 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-07 13:21:01,116 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-07-07 13:21:01,116 INFO L87 Difference]: Start difference. First operand 3758 states and 4454 transitions. Second operand 5 states. [2020-07-07 13:21:01,758 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 13:21:01,758 INFO L93 Difference]: Finished difference Result 6233 states and 7321 transitions. [2020-07-07 13:21:01,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-07-07 13:21:01,759 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 265 [2020-07-07 13:21:01,760 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 13:21:01,784 INFO L225 Difference]: With dead ends: 6233 [2020-07-07 13:21:01,785 INFO L226 Difference]: Without dead ends: 4430 [2020-07-07 13:21:01,791 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-07-07 13:21:01,799 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4430 states. [2020-07-07 13:21:02,210 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4430 to 3860. [2020-07-07 13:21:02,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3860 states. [2020-07-07 13:21:02,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3860 states to 3860 states and 4565 transitions. [2020-07-07 13:21:02,222 INFO L78 Accepts]: Start accepts. Automaton has 3860 states and 4565 transitions. Word has length 265 [2020-07-07 13:21:02,222 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 13:21:02,222 INFO L479 AbstractCegarLoop]: Abstraction has 3860 states and 4565 transitions. [2020-07-07 13:21:02,222 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-07 13:21:02,223 INFO L276 IsEmpty]: Start isEmpty. Operand 3860 states and 4565 transitions. [2020-07-07 13:21:02,232 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 269 [2020-07-07 13:21:02,232 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 13:21:02,232 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] [2020-07-07 13:21:02,233 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-07-07 13:21:02,233 INFO L427 AbstractCegarLoop]: === Iteration 14 === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 13:21:02,233 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 13:21:02,233 INFO L82 PathProgramCache]: Analyzing trace with hash -700825412, now seen corresponding path program 2 times [2020-07-07 13:21:02,233 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 13:21:02,238 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [797015436] [2020-07-07 13:21:02,239 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 13:21:02,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:21:02,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:21:02,358 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 13:21:02,358 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-07 13:21:02,358 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [797015436] [2020-07-07 13:21:02,359 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 13:21:02,359 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-07 13:21:02,359 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [676517120] [2020-07-07 13:21:02,360 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-07 13:21:02,360 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-07 13:21:02,360 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-07 13:21:02,360 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-07-07 13:21:02,361 INFO L87 Difference]: Start difference. First operand 3860 states and 4565 transitions. Second operand 5 states. [2020-07-07 13:21:03,106 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 13:21:03,106 INFO L93 Difference]: Finished difference Result 6567 states and 7700 transitions. [2020-07-07 13:21:03,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-07-07 13:21:03,107 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 268 [2020-07-07 13:21:03,108 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 13:21:03,128 INFO L225 Difference]: With dead ends: 6567 [2020-07-07 13:21:03,129 INFO L226 Difference]: Without dead ends: 4662 [2020-07-07 13:21:03,134 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-07-07 13:21:03,140 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4662 states. [2020-07-07 13:21:03,475 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4662 to 3897. [2020-07-07 13:21:03,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3897 states. [2020-07-07 13:21:03,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3897 states to 3897 states and 4611 transitions. [2020-07-07 13:21:03,486 INFO L78 Accepts]: Start accepts. Automaton has 3897 states and 4611 transitions. Word has length 268 [2020-07-07 13:21:03,487 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 13:21:03,487 INFO L479 AbstractCegarLoop]: Abstraction has 3897 states and 4611 transitions. [2020-07-07 13:21:03,487 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-07 13:21:03,487 INFO L276 IsEmpty]: Start isEmpty. Operand 3897 states and 4611 transitions. [2020-07-07 13:21:03,497 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 270 [2020-07-07 13:21:03,497 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 13:21:03,498 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] [2020-07-07 13:21:03,498 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-07-07 13:21:03,498 INFO L427 AbstractCegarLoop]: === Iteration 15 === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 13:21:03,498 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 13:21:03,498 INFO L82 PathProgramCache]: Analyzing trace with hash 19964066, now seen corresponding path program 1 times [2020-07-07 13:21:03,499 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 13:21:03,499 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1931239562] [2020-07-07 13:21:03,499 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 13:21:03,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:21:03,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:21:03,619 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 13:21:03,620 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-07 13:21:03,620 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1931239562] [2020-07-07 13:21:03,620 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 13:21:03,620 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-07 13:21:03,621 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [174759594] [2020-07-07 13:21:03,621 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-07 13:21:03,621 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-07 13:21:03,621 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-07 13:21:03,622 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-07-07 13:21:03,622 INFO L87 Difference]: Start difference. First operand 3897 states and 4611 transitions. Second operand 5 states. [2020-07-07 13:21:04,224 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 13:21:04,225 INFO L93 Difference]: Finished difference Result 6406 states and 7521 transitions. [2020-07-07 13:21:04,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-07-07 13:21:04,225 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 269 [2020-07-07 13:21:04,226 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 13:21:04,238 INFO L225 Difference]: With dead ends: 6406 [2020-07-07 13:21:04,239 INFO L226 Difference]: Without dead ends: 4464 [2020-07-07 13:21:04,245 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-07-07 13:21:04,250 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4464 states. [2020-07-07 13:21:04,524 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4464 to 3803. [2020-07-07 13:21:04,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3803 states. [2020-07-07 13:21:04,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3803 states to 3803 states and 4502 transitions. [2020-07-07 13:21:04,534 INFO L78 Accepts]: Start accepts. Automaton has 3803 states and 4502 transitions. Word has length 269 [2020-07-07 13:21:04,535 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 13:21:04,535 INFO L479 AbstractCegarLoop]: Abstraction has 3803 states and 4502 transitions. [2020-07-07 13:21:04,535 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-07 13:21:04,535 INFO L276 IsEmpty]: Start isEmpty. Operand 3803 states and 4502 transitions. [2020-07-07 13:21:04,545 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 270 [2020-07-07 13:21:04,545 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 13:21:04,545 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] [2020-07-07 13:21:04,545 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-07-07 13:21:04,546 INFO L427 AbstractCegarLoop]: === Iteration 16 === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 13:21:04,546 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 13:21:04,546 INFO L82 PathProgramCache]: Analyzing trace with hash -76751101, now seen corresponding path program 1 times [2020-07-07 13:21:04,546 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 13:21:04,547 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [942874409] [2020-07-07 13:21:04,547 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 13:21:04,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:21:04,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:21:04,676 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 13:21:04,677 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-07 13:21:04,677 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [942874409] [2020-07-07 13:21:04,678 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 13:21:04,678 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-07 13:21:04,678 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1949872539] [2020-07-07 13:21:04,679 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-07 13:21:04,679 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-07 13:21:04,680 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-07 13:21:04,680 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-07 13:21:04,680 INFO L87 Difference]: Start difference. First operand 3803 states and 4502 transitions. Second operand 3 states. [2020-07-07 13:21:05,222 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 13:21:05,223 INFO L93 Difference]: Finished difference Result 7744 states and 9274 transitions. [2020-07-07 13:21:05,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-07 13:21:05,223 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 269 [2020-07-07 13:21:05,224 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 13:21:05,245 INFO L225 Difference]: With dead ends: 7744 [2020-07-07 13:21:05,245 INFO L226 Difference]: Without dead ends: 4122 [2020-07-07 13:21:05,254 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-07 13:21:05,259 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4122 states. [2020-07-07 13:21:05,561 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4122 to 4040. [2020-07-07 13:21:05,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4040 states. [2020-07-07 13:21:05,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4040 states to 4040 states and 4754 transitions. [2020-07-07 13:21:05,571 INFO L78 Accepts]: Start accepts. Automaton has 4040 states and 4754 transitions. Word has length 269 [2020-07-07 13:21:05,572 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 13:21:05,572 INFO L479 AbstractCegarLoop]: Abstraction has 4040 states and 4754 transitions. [2020-07-07 13:21:05,572 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-07 13:21:05,572 INFO L276 IsEmpty]: Start isEmpty. Operand 4040 states and 4754 transitions. [2020-07-07 13:21:05,582 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 272 [2020-07-07 13:21:05,582 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 13:21:05,583 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] [2020-07-07 13:21:05,583 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-07-07 13:21:05,583 INFO L427 AbstractCegarLoop]: === Iteration 17 === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 13:21:05,583 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 13:21:05,583 INFO L82 PathProgramCache]: Analyzing trace with hash 360016174, now seen corresponding path program 1 times [2020-07-07 13:21:05,584 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 13:21:05,584 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1154929557] [2020-07-07 13:21:05,584 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 13:21:05,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:21:05,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:21:05,709 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 13:21:05,709 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-07 13:21:05,709 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1154929557] [2020-07-07 13:21:05,710 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 13:21:05,710 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-07 13:21:05,710 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1201700086] [2020-07-07 13:21:05,711 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-07 13:21:05,711 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-07 13:21:05,711 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-07 13:21:05,711 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-07 13:21:05,711 INFO L87 Difference]: Start difference. First operand 4040 states and 4754 transitions. Second operand 4 states. [2020-07-07 13:21:06,666 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 13:21:06,666 INFO L93 Difference]: Finished difference Result 8465 states and 10020 transitions. [2020-07-07 13:21:06,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-07-07 13:21:06,667 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 271 [2020-07-07 13:21:06,669 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 13:21:06,681 INFO L225 Difference]: With dead ends: 8465 [2020-07-07 13:21:06,681 INFO L226 Difference]: Without dead ends: 6494 [2020-07-07 13:21:06,688 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-07-07 13:21:06,696 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6494 states. [2020-07-07 13:21:07,107 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6494 to 4070. [2020-07-07 13:21:07,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4070 states. [2020-07-07 13:21:07,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4070 states to 4070 states and 4793 transitions. [2020-07-07 13:21:07,115 INFO L78 Accepts]: Start accepts. Automaton has 4070 states and 4793 transitions. Word has length 271 [2020-07-07 13:21:07,116 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 13:21:07,116 INFO L479 AbstractCegarLoop]: Abstraction has 4070 states and 4793 transitions. [2020-07-07 13:21:07,116 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-07 13:21:07,116 INFO L276 IsEmpty]: Start isEmpty. Operand 4070 states and 4793 transitions. [2020-07-07 13:21:07,124 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 272 [2020-07-07 13:21:07,124 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 13:21:07,125 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] [2020-07-07 13:21:07,125 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-07-07 13:21:07,125 INFO L427 AbstractCegarLoop]: === Iteration 18 === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 13:21:07,125 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 13:21:07,126 INFO L82 PathProgramCache]: Analyzing trace with hash 663575758, now seen corresponding path program 1 times [2020-07-07 13:21:07,126 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 13:21:07,126 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [582368882] [2020-07-07 13:21:07,126 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 13:21:07,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:21:07,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:21:07,253 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 13:21:07,254 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-07 13:21:07,254 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [582368882] [2020-07-07 13:21:07,254 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 13:21:07,254 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-07 13:21:07,255 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [139058340] [2020-07-07 13:21:07,256 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-07 13:21:07,256 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-07 13:21:07,256 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-07 13:21:07,256 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-07 13:21:07,256 INFO L87 Difference]: Start difference. First operand 4070 states and 4793 transitions. Second operand 4 states. [2020-07-07 13:21:08,309 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 13:21:08,309 INFO L93 Difference]: Finished difference Result 11247 states and 13651 transitions. [2020-07-07 13:21:08,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-07-07 13:21:08,310 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 271 [2020-07-07 13:21:08,311 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 13:21:08,327 INFO L225 Difference]: With dead ends: 11247 [2020-07-07 13:21:08,327 INFO L226 Difference]: Without dead ends: 7358 [2020-07-07 13:21:08,337 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-07-07 13:21:08,347 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7358 states. [2020-07-07 13:21:08,775 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7358 to 4556. [2020-07-07 13:21:08,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4556 states. [2020-07-07 13:21:08,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4556 states to 4556 states and 5378 transitions. [2020-07-07 13:21:08,786 INFO L78 Accepts]: Start accepts. Automaton has 4556 states and 5378 transitions. Word has length 271 [2020-07-07 13:21:08,787 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 13:21:08,787 INFO L479 AbstractCegarLoop]: Abstraction has 4556 states and 5378 transitions. [2020-07-07 13:21:08,787 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-07 13:21:08,788 INFO L276 IsEmpty]: Start isEmpty. Operand 4556 states and 5378 transitions. [2020-07-07 13:21:08,797 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 292 [2020-07-07 13:21:08,798 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 13:21:08,798 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] [2020-07-07 13:21:08,798 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-07-07 13:21:08,799 INFO L427 AbstractCegarLoop]: === Iteration 19 === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 13:21:08,799 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 13:21:08,799 INFO L82 PathProgramCache]: Analyzing trace with hash 651686925, now seen corresponding path program 1 times [2020-07-07 13:21:08,801 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 13:21:08,801 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1600865160] [2020-07-07 13:21:08,801 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 13:21:08,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:21:08,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:21:08,956 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 13:21:08,956 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-07 13:21:08,957 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1600865160] [2020-07-07 13:21:08,957 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 13:21:08,957 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-07 13:21:08,957 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [725048958] [2020-07-07 13:21:08,958 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-07 13:21:08,959 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-07 13:21:08,959 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-07 13:21:08,959 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-07 13:21:08,959 INFO L87 Difference]: Start difference. First operand 4556 states and 5378 transitions. Second operand 3 states. [2020-07-07 13:21:09,904 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 13:21:09,905 INFO L93 Difference]: Finished difference Result 9759 states and 11774 transitions. [2020-07-07 13:21:09,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-07 13:21:09,905 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 291 [2020-07-07 13:21:09,906 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 13:21:09,916 INFO L225 Difference]: With dead ends: 9759 [2020-07-07 13:21:09,917 INFO L226 Difference]: Without dead ends: 5372 [2020-07-07 13:21:09,928 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-07 13:21:09,934 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5372 states. [2020-07-07 13:21:10,289 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5372 to 5009. [2020-07-07 13:21:10,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5009 states. [2020-07-07 13:21:10,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5009 states to 5009 states and 5906 transitions. [2020-07-07 13:21:10,300 INFO L78 Accepts]: Start accepts. Automaton has 5009 states and 5906 transitions. Word has length 291 [2020-07-07 13:21:10,301 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 13:21:10,301 INFO L479 AbstractCegarLoop]: Abstraction has 5009 states and 5906 transitions. [2020-07-07 13:21:10,302 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-07 13:21:10,302 INFO L276 IsEmpty]: Start isEmpty. Operand 5009 states and 5906 transitions. [2020-07-07 13:21:10,311 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 294 [2020-07-07 13:21:10,311 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 13:21:10,312 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] [2020-07-07 13:21:10,312 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-07-07 13:21:10,312 INFO L427 AbstractCegarLoop]: === Iteration 20 === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 13:21:10,313 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 13:21:10,313 INFO L82 PathProgramCache]: Analyzing trace with hash -2093654891, now seen corresponding path program 1 times [2020-07-07 13:21:10,313 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 13:21:10,313 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1480561568] [2020-07-07 13:21:10,314 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 13:21:10,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:21:10,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:21:10,444 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 13:21:10,444 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-07 13:21:10,444 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1480561568] [2020-07-07 13:21:10,445 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 13:21:10,445 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-07 13:21:10,445 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [223573155] [2020-07-07 13:21:10,446 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-07 13:21:10,446 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-07 13:21:10,446 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-07 13:21:10,446 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-07 13:21:10,446 INFO L87 Difference]: Start difference. First operand 5009 states and 5906 transitions. Second operand 3 states. [2020-07-07 13:21:10,980 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 13:21:10,980 INFO L93 Difference]: Finished difference Result 9837 states and 11644 transitions. [2020-07-07 13:21:10,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-07 13:21:10,981 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 293 [2020-07-07 13:21:10,982 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 13:21:10,996 INFO L225 Difference]: With dead ends: 9837 [2020-07-07 13:21:10,996 INFO L226 Difference]: Without dead ends: 6611 [2020-07-07 13:21:11,003 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-07 13:21:11,009 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6611 states. [2020-07-07 13:21:11,648 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6611 to 6611. [2020-07-07 13:21:11,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6611 states. [2020-07-07 13:21:11,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6611 states to 6611 states and 7805 transitions. [2020-07-07 13:21:11,658 INFO L78 Accepts]: Start accepts. Automaton has 6611 states and 7805 transitions. Word has length 293 [2020-07-07 13:21:11,659 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 13:21:11,659 INFO L479 AbstractCegarLoop]: Abstraction has 6611 states and 7805 transitions. [2020-07-07 13:21:11,659 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-07 13:21:11,659 INFO L276 IsEmpty]: Start isEmpty. Operand 6611 states and 7805 transitions. [2020-07-07 13:21:11,672 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 299 [2020-07-07 13:21:11,672 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 13:21:11,672 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] [2020-07-07 13:21:11,673 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-07-07 13:21:11,673 INFO L427 AbstractCegarLoop]: === Iteration 21 === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 13:21:11,673 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 13:21:11,673 INFO L82 PathProgramCache]: Analyzing trace with hash -1985620780, now seen corresponding path program 1 times [2020-07-07 13:21:11,674 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 13:21:11,674 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [68178512] [2020-07-07 13:21:11,674 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 13:21:11,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:21:11,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:21:11,793 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 13:21:11,794 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-07 13:21:11,794 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [68178512] [2020-07-07 13:21:11,794 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 13:21:11,794 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-07 13:21:11,795 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [237941367] [2020-07-07 13:21:11,795 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-07 13:21:11,795 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-07 13:21:11,795 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-07 13:21:11,796 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-07 13:21:11,796 INFO L87 Difference]: Start difference. First operand 6611 states and 7805 transitions. Second operand 3 states. [2020-07-07 13:21:12,431 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 13:21:12,431 INFO L93 Difference]: Finished difference Result 12305 states and 14562 transitions. [2020-07-07 13:21:12,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-07 13:21:12,432 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 298 [2020-07-07 13:21:12,432 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 13:21:12,445 INFO L225 Difference]: With dead ends: 12305 [2020-07-07 13:21:12,445 INFO L226 Difference]: Without dead ends: 7477 [2020-07-07 13:21:12,456 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-07 13:21:12,463 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7477 states. [2020-07-07 13:21:13,008 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7477 to 7477. [2020-07-07 13:21:13,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7477 states. [2020-07-07 13:21:13,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7477 states to 7477 states and 8822 transitions. [2020-07-07 13:21:13,017 INFO L78 Accepts]: Start accepts. Automaton has 7477 states and 8822 transitions. Word has length 298 [2020-07-07 13:21:13,018 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 13:21:13,018 INFO L479 AbstractCegarLoop]: Abstraction has 7477 states and 8822 transitions. [2020-07-07 13:21:13,018 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-07 13:21:13,018 INFO L276 IsEmpty]: Start isEmpty. Operand 7477 states and 8822 transitions. [2020-07-07 13:21:13,031 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 300 [2020-07-07 13:21:13,032 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 13:21:13,032 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] [2020-07-07 13:21:13,032 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-07-07 13:21:13,032 INFO L427 AbstractCegarLoop]: === Iteration 22 === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 13:21:13,033 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 13:21:13,033 INFO L82 PathProgramCache]: Analyzing trace with hash -638739787, now seen corresponding path program 1 times [2020-07-07 13:21:13,033 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 13:21:13,033 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [559077559] [2020-07-07 13:21:13,033 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 13:21:13,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-07 13:21:13,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-07 13:21:13,293 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-07 13:21:13,294 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-07-07 13:21:13,295 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-07-07 13:21:13,296 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-07-07 13:21:13,354 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.07 01:21:13 BoogieIcfgContainer [2020-07-07 13:21:13,354 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-07 13:21:13,358 INFO L168 Benchmark]: Toolchain (without parser) took 24175.17 ms. Allocated memory was 145.2 MB in the beginning and 1.3 GB in the end (delta: 1.2 GB). Free memory was 101.6 MB in the beginning and 448.9 MB in the end (delta: -347.3 MB). Peak memory consumption was 836.6 MB. Max. memory is 7.1 GB. [2020-07-07 13:21:13,362 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 145.2 MB. Free memory was 120.6 MB in the beginning and 120.3 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-07-07 13:21:13,363 INFO L168 Benchmark]: CACSL2BoogieTranslator took 592.56 ms. Allocated memory was 145.2 MB in the beginning and 202.4 MB in the end (delta: 57.1 MB). Free memory was 101.4 MB in the beginning and 177.6 MB in the end (delta: -76.2 MB). Peak memory consumption was 23.8 MB. Max. memory is 7.1 GB. [2020-07-07 13:21:13,364 INFO L168 Benchmark]: Boogie Preprocessor took 104.54 ms. Allocated memory is still 202.4 MB. Free memory was 177.6 MB in the beginning and 174.9 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 7.1 GB. [2020-07-07 13:21:13,365 INFO L168 Benchmark]: RCFGBuilder took 989.23 ms. Allocated memory is still 202.4 MB. Free memory was 174.9 MB in the beginning and 107.7 MB in the end (delta: 67.2 MB). Peak memory consumption was 67.2 MB. Max. memory is 7.1 GB. [2020-07-07 13:21:13,366 INFO L168 Benchmark]: TraceAbstraction took 22483.57 ms. Allocated memory was 202.4 MB in the beginning and 1.3 GB in the end (delta: 1.1 GB). Free memory was 107.1 MB in the beginning and 448.9 MB in the end (delta: -341.8 MB). Peak memory consumption was 784.9 MB. Max. memory is 7.1 GB. [2020-07-07 13:21:13,375 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 145.2 MB. Free memory was 120.6 MB in the beginning and 120.3 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 592.56 ms. Allocated memory was 145.2 MB in the beginning and 202.4 MB in the end (delta: 57.1 MB). Free memory was 101.4 MB in the beginning and 177.6 MB in the end (delta: -76.2 MB). Peak memory consumption was 23.8 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 104.54 ms. Allocated memory is still 202.4 MB. Free memory was 177.6 MB in the beginning and 174.9 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 7.1 GB. * RCFGBuilder took 989.23 ms. Allocated memory is still 202.4 MB. Free memory was 174.9 MB in the beginning and 107.7 MB in the end (delta: 67.2 MB). Peak memory consumption was 67.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 22483.57 ms. Allocated memory was 202.4 MB in the beginning and 1.3 GB in the end (delta: 1.1 GB). Free memory was 107.1 MB in the beginning and 448.9 MB in the end (delta: -341.8 MB). Peak memory consumption was 784.9 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: 22.3s, OverallIterations: 22, TraceHistogramMax: 6, AutomataDifference: 11.3s, 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, 2.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 140 GetRequests, 93 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=7477occurred in iteration=21, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 6.2s 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...