/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf -i ../../../trunk/examples/svcomp/ssh-simplified/s3_clnt_2.cil-1.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-72570d3 [2020-08-22 18:58:54,966 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-22 18:58:54,969 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-22 18:58:54,994 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-22 18:58:54,995 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-22 18:58:54,996 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-22 18:58:54,998 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-22 18:58:54,999 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-22 18:58:55,001 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-22 18:58:55,002 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-22 18:58:55,003 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-22 18:58:55,004 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-22 18:58:55,005 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-22 18:58:55,006 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-22 18:58:55,007 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-22 18:58:55,008 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-22 18:58:55,009 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-22 18:58:55,010 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-22 18:58:55,011 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-22 18:58:55,013 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-22 18:58:55,015 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-22 18:58:55,016 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-22 18:58:55,019 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-22 18:58:55,020 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-22 18:58:55,028 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-08-22 18:58:55,043 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-22 18:58:55,044 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-22 18:58:55,044 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-22 18:58:55,050 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2020-08-22 18:58:55,073 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-22 18:58:55,073 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-22 18:58:55,074 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-22 18:58:55,075 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-22 18:58:55,076 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-22 18:58:55,076 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-22 18:58:55,076 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-22 18:58:55,076 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-22 18:58:55,076 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-22 18:58:55,077 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-22 18:58:55,078 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-22 18:58:55,078 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-22 18:58:55,078 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-22 18:58:55,079 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-22 18:58:55,079 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-22 18:58:55,080 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-08-22 18:58:55,080 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-22 18:58:55,080 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-22 18:58:55,081 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-22 18:58:55,081 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-22 18:58:55,081 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-08-22 18:58:55,082 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-22 18:58:55,082 INFO L138 SettingsManager]: * Use separate solver for trace checks=false [2020-08-22 18:58:55,408 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-22 18:58:55,427 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-22 18:58:55,437 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-22 18:58:55,438 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-22 18:58:55,439 INFO L275 PluginConnector]: CDTParser initialized [2020-08-22 18:58:55,440 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ssh-simplified/s3_clnt_2.cil-1.c [2020-08-22 18:58:55,505 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b1fef1c21/2903f5c833724e2bafbe724f03a587e0/FLAG4613d779b [2020-08-22 18:58:56,050 INFO L306 CDTParser]: Found 1 translation units. [2020-08-22 18:58:56,051 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ssh-simplified/s3_clnt_2.cil-1.c [2020-08-22 18:58:56,064 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b1fef1c21/2903f5c833724e2bafbe724f03a587e0/FLAG4613d779b [2020-08-22 18:58:56,374 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b1fef1c21/2903f5c833724e2bafbe724f03a587e0 [2020-08-22 18:58:56,383 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-22 18:58:56,385 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-22 18:58:56,386 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-22 18:58:56,387 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-22 18:58:56,390 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-22 18:58:56,391 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 06:58:56" (1/1) ... [2020-08-22 18:58:56,395 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@c98bb06 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:58:56, skipping insertion in model container [2020-08-22 18:58:56,395 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 06:58:56" (1/1) ... [2020-08-22 18:58:56,403 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-22 18:58:56,465 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-22 18:58:56,817 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 18:58:56,822 INFO L203 MainTranslator]: Completed pre-run [2020-08-22 18:58:56,987 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 18:58:57,002 INFO L208 MainTranslator]: Completed translation [2020-08-22 18:58:57,003 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:58:57 WrapperNode [2020-08-22 18:58:57,003 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-22 18:58:57,004 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-22 18:58:57,004 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-22 18:58:57,004 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-22 18:58:57,025 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:58:57" (1/1) ... [2020-08-22 18:58:57,025 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:58:57" (1/1) ... [2020-08-22 18:58:57,035 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:58:57" (1/1) ... [2020-08-22 18:58:57,035 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:58:57" (1/1) ... [2020-08-22 18:58:57,047 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:58:57" (1/1) ... [2020-08-22 18:58:57,065 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:58:57" (1/1) ... [2020-08-22 18:58:57,070 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:58:57" (1/1) ... [2020-08-22 18:58:57,076 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-22 18:58:57,077 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-22 18:58:57,077 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-22 18:58:57,077 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-22 18:58:57,078 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:58:57" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-22 18:58:57,146 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-22 18:58:57,146 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-22 18:58:57,147 INFO L138 BoogieDeclarations]: Found implementation of procedure ssl3_connect [2020-08-22 18:58:57,147 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-22 18:58:57,147 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-22 18:58:57,147 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-08-22 18:58:57,147 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-22 18:58:57,147 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_long [2020-08-22 18:58:57,148 INFO L130 BoogieDeclarations]: Found specification of procedure ssl3_connect [2020-08-22 18:58:57,148 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-22 18:58:57,148 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-22 18:58:57,148 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-22 18:58:57,321 WARN L779 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-08-22 18:58:58,011 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##85: assume !false; [2020-08-22 18:58:58,012 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##84: assume false; [2020-08-22 18:58:58,039 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-22 18:58:58,039 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-08-22 18:58:58,047 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 06:58:58 BoogieIcfgContainer [2020-08-22 18:58:58,047 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-22 18:58:58,049 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-22 18:58:58,049 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-22 18:58:58,053 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-22 18:58:58,053 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.08 06:58:56" (1/3) ... [2020-08-22 18:58:58,054 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@45f1884e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 06:58:58, skipping insertion in model container [2020-08-22 18:58:58,054 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:58:57" (2/3) ... [2020-08-22 18:58:58,055 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@45f1884e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 06:58:58, skipping insertion in model container [2020-08-22 18:58:58,055 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 06:58:58" (3/3) ... [2020-08-22 18:58:58,057 INFO L109 eAbstractionObserver]: Analyzing ICFG s3_clnt_2.cil-1.c [2020-08-22 18:58:58,069 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-22 18:58:58,079 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-22 18:58:58,095 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-22 18:58:58,123 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-22 18:58:58,124 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-22 18:58:58,124 INFO L377 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2020-08-22 18:58:58,124 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-22 18:58:58,125 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-22 18:58:58,125 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-22 18:58:58,125 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-22 18:58:58,125 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-22 18:58:58,152 INFO L276 IsEmpty]: Start isEmpty. Operand 385 states. [2020-08-22 18:58:58,174 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2020-08-22 18:58:58,175 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 18:58:58,177 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 18:58:58,178 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 18:58:58,185 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 18:58:58,186 INFO L82 PathProgramCache]: Analyzing trace with hash 1688119681, now seen corresponding path program 1 times [2020-08-22 18:58:58,197 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 18:58:58,198 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2043933194] [2020-08-22 18:58:58,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 18:58:58,264 INFO L288 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-08-22 18:58:58,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:58:58,705 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 18:58:58,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:58:58,763 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 18:58:58,766 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2043933194] [2020-08-22 18:58:58,768 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 18:58:58,768 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-22 18:58:58,769 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [105053478] [2020-08-22 18:58:58,774 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-22 18:58:58,774 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 18:58:58,788 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-22 18:58:58,789 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-08-22 18:58:58,792 INFO L87 Difference]: Start difference. First operand 385 states. Second operand 6 states. [2020-08-22 18:58:59,360 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 18:58:59,360 INFO L93 Difference]: Finished difference Result 689 states and 904 transitions. [2020-08-22 18:58:59,361 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-08-22 18:58:59,362 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 161 [2020-08-22 18:58:59,364 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 18:58:59,394 INFO L225 Difference]: With dead ends: 689 [2020-08-22 18:58:59,395 INFO L226 Difference]: Without dead ends: 364 [2020-08-22 18:58:59,407 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-08-22 18:58:59,425 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 364 states. [2020-08-22 18:58:59,492 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 364 to 349. [2020-08-22 18:58:59,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 349 states. [2020-08-22 18:58:59,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 349 states to 349 states and 408 transitions. [2020-08-22 18:58:59,498 INFO L78 Accepts]: Start accepts. Automaton has 349 states and 408 transitions. Word has length 161 [2020-08-22 18:58:59,500 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 18:58:59,500 INFO L479 AbstractCegarLoop]: Abstraction has 349 states and 408 transitions. [2020-08-22 18:58:59,500 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-22 18:58:59,500 INFO L276 IsEmpty]: Start isEmpty. Operand 349 states and 408 transitions. [2020-08-22 18:58:59,504 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2020-08-22 18:58:59,504 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 18:58:59,504 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 18:58:59,505 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-22 18:58:59,505 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 18:58:59,505 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 18:58:59,506 INFO L82 PathProgramCache]: Analyzing trace with hash 1044760098, now seen corresponding path program 1 times [2020-08-22 18:58:59,506 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 18:58:59,506 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [363852653] [2020-08-22 18:58:59,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 18:58:59,535 INFO L288 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-08-22 18:58:59,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:58:59,786 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 18:58:59,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:58:59,820 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 18:58:59,821 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [363852653] [2020-08-22 18:58:59,821 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 18:58:59,822 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-22 18:58:59,822 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [536104118] [2020-08-22 18:58:59,823 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-22 18:58:59,823 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 18:58:59,824 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-22 18:58:59,824 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-08-22 18:58:59,824 INFO L87 Difference]: Start difference. First operand 349 states and 408 transitions. Second operand 6 states. [2020-08-22 18:59:00,177 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 18:59:00,177 INFO L93 Difference]: Finished difference Result 610 states and 760 transitions. [2020-08-22 18:59:00,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-08-22 18:59:00,178 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 180 [2020-08-22 18:59:00,179 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 18:59:00,182 INFO L225 Difference]: With dead ends: 610 [2020-08-22 18:59:00,182 INFO L226 Difference]: Without dead ends: 407 [2020-08-22 18:59:00,185 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-08-22 18:59:00,186 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 407 states. [2020-08-22 18:59:00,232 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 407 to 362. [2020-08-22 18:59:00,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 362 states. [2020-08-22 18:59:00,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 362 states to 362 states and 426 transitions. [2020-08-22 18:59:00,234 INFO L78 Accepts]: Start accepts. Automaton has 362 states and 426 transitions. Word has length 180 [2020-08-22 18:59:00,235 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 18:59:00,235 INFO L479 AbstractCegarLoop]: Abstraction has 362 states and 426 transitions. [2020-08-22 18:59:00,235 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-22 18:59:00,236 INFO L276 IsEmpty]: Start isEmpty. Operand 362 states and 426 transitions. [2020-08-22 18:59:00,237 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2020-08-22 18:59:00,238 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 18:59:00,238 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 18:59:00,238 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-22 18:59:00,239 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 18:59:00,239 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 18:59:00,239 INFO L82 PathProgramCache]: Analyzing trace with hash -975331194, now seen corresponding path program 1 times [2020-08-22 18:59:00,239 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 18:59:00,240 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1802763368] [2020-08-22 18:59:00,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 18:59:00,248 INFO L288 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-08-22 18:59:00,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:59:00,353 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 18:59:00,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:59:00,374 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 18:59:00,374 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1802763368] [2020-08-22 18:59:00,375 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 18:59:00,375 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-22 18:59:00,375 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1376296171] [2020-08-22 18:59:00,376 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-22 18:59:00,376 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 18:59:00,377 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-22 18:59:00,377 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-22 18:59:00,377 INFO L87 Difference]: Start difference. First operand 362 states and 426 transitions. Second operand 3 states. [2020-08-22 18:59:00,584 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 18:59:00,584 INFO L93 Difference]: Finished difference Result 608 states and 743 transitions. [2020-08-22 18:59:00,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-22 18:59:00,585 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 184 [2020-08-22 18:59:00,586 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 18:59:00,589 INFO L225 Difference]: With dead ends: 608 [2020-08-22 18:59:00,590 INFO L226 Difference]: Without dead ends: 392 [2020-08-22 18:59:00,591 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-22 18:59:00,593 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 392 states. [2020-08-22 18:59:00,634 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 392 to 380. [2020-08-22 18:59:00,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 380 states. [2020-08-22 18:59:00,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 380 states to 380 states and 449 transitions. [2020-08-22 18:59:00,636 INFO L78 Accepts]: Start accepts. Automaton has 380 states and 449 transitions. Word has length 184 [2020-08-22 18:59:00,637 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 18:59:00,637 INFO L479 AbstractCegarLoop]: Abstraction has 380 states and 449 transitions. [2020-08-22 18:59:00,637 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-22 18:59:00,637 INFO L276 IsEmpty]: Start isEmpty. Operand 380 states and 449 transitions. [2020-08-22 18:59:00,640 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 192 [2020-08-22 18:59:00,640 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 18:59:00,641 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 18:59:00,641 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-22 18:59:00,641 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 18:59:00,642 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 18:59:00,642 INFO L82 PathProgramCache]: Analyzing trace with hash 103747241, now seen corresponding path program 1 times [2020-08-22 18:59:00,642 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 18:59:00,642 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1750285795] [2020-08-22 18:59:00,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 18:59:00,659 INFO L288 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-08-22 18:59:00,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:59:00,752 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 18:59:00,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:59:00,834 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 18:59:00,835 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1750285795] [2020-08-22 18:59:00,836 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 18:59:00,836 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-22 18:59:00,837 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1615913841] [2020-08-22 18:59:00,838 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-22 18:59:00,838 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 18:59:00,838 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-22 18:59:00,839 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-22 18:59:00,839 INFO L87 Difference]: Start difference. First operand 380 states and 449 transitions. Second operand 3 states. [2020-08-22 18:59:00,992 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 18:59:00,992 INFO L93 Difference]: Finished difference Result 841 states and 1041 transitions. [2020-08-22 18:59:00,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-22 18:59:00,993 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 191 [2020-08-22 18:59:00,993 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 18:59:00,997 INFO L225 Difference]: With dead ends: 841 [2020-08-22 18:59:00,998 INFO L226 Difference]: Without dead ends: 607 [2020-08-22 18:59:01,000 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-22 18:59:01,001 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 607 states. [2020-08-22 18:59:01,069 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 607 to 607. [2020-08-22 18:59:01,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 607 states. [2020-08-22 18:59:01,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 607 states to 607 states and 737 transitions. [2020-08-22 18:59:01,072 INFO L78 Accepts]: Start accepts. Automaton has 607 states and 737 transitions. Word has length 191 [2020-08-22 18:59:01,073 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 18:59:01,073 INFO L479 AbstractCegarLoop]: Abstraction has 607 states and 737 transitions. [2020-08-22 18:59:01,073 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-22 18:59:01,073 INFO L276 IsEmpty]: Start isEmpty. Operand 607 states and 737 transitions. [2020-08-22 18:59:01,076 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2020-08-22 18:59:01,076 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 18:59:01,077 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 18:59:01,077 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-22 18:59:01,077 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 18:59:01,078 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 18:59:01,078 INFO L82 PathProgramCache]: Analyzing trace with hash -574346418, now seen corresponding path program 1 times [2020-08-22 18:59:01,078 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 18:59:01,078 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [558874237] [2020-08-22 18:59:01,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 18:59:01,089 INFO L288 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-08-22 18:59:01,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:59:01,178 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 18:59:01,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:59:01,212 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 18:59:01,212 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [558874237] [2020-08-22 18:59:01,213 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 18:59:01,213 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-22 18:59:01,213 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1685298459] [2020-08-22 18:59:01,214 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-22 18:59:01,214 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 18:59:01,214 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-22 18:59:01,214 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-22 18:59:01,215 INFO L87 Difference]: Start difference. First operand 607 states and 737 transitions. Second operand 3 states. [2020-08-22 18:59:01,456 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 18:59:01,456 INFO L93 Difference]: Finished difference Result 1129 states and 1410 transitions. [2020-08-22 18:59:01,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-22 18:59:01,457 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 204 [2020-08-22 18:59:01,458 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 18:59:01,461 INFO L225 Difference]: With dead ends: 1129 [2020-08-22 18:59:01,462 INFO L226 Difference]: Without dead ends: 668 [2020-08-22 18:59:01,463 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-22 18:59:01,464 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 668 states. [2020-08-22 18:59:01,516 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 668 to 647. [2020-08-22 18:59:01,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 647 states. [2020-08-22 18:59:01,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 647 states to 647 states and 787 transitions. [2020-08-22 18:59:01,519 INFO L78 Accepts]: Start accepts. Automaton has 647 states and 787 transitions. Word has length 204 [2020-08-22 18:59:01,519 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 18:59:01,520 INFO L479 AbstractCegarLoop]: Abstraction has 647 states and 787 transitions. [2020-08-22 18:59:01,520 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-22 18:59:01,520 INFO L276 IsEmpty]: Start isEmpty. Operand 647 states and 787 transitions. [2020-08-22 18:59:01,523 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 212 [2020-08-22 18:59:01,523 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 18:59:01,524 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 18:59:01,524 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-22 18:59:01,524 INFO L427 AbstractCegarLoop]: === Iteration 6 === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 18:59:01,525 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 18:59:01,525 INFO L82 PathProgramCache]: Analyzing trace with hash -375106847, now seen corresponding path program 1 times [2020-08-22 18:59:01,525 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 18:59:01,526 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [169250630] [2020-08-22 18:59:01,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 18:59:01,536 INFO L288 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-08-22 18:59:01,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:59:01,602 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 18:59:01,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:59:01,637 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 18:59:01,638 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [169250630] [2020-08-22 18:59:01,639 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 18:59:01,640 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-22 18:59:01,641 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1769221259] [2020-08-22 18:59:01,642 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-22 18:59:01,642 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 18:59:01,643 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-22 18:59:01,643 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-22 18:59:01,643 INFO L87 Difference]: Start difference. First operand 647 states and 787 transitions. Second operand 3 states. [2020-08-22 18:59:01,801 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 18:59:01,802 INFO L93 Difference]: Finished difference Result 1579 states and 1959 transitions. [2020-08-22 18:59:01,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-22 18:59:01,803 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 211 [2020-08-22 18:59:01,804 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 18:59:01,812 INFO L225 Difference]: With dead ends: 1579 [2020-08-22 18:59:01,816 INFO L226 Difference]: Without dead ends: 1078 [2020-08-22 18:59:01,819 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-22 18:59:01,823 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1078 states. [2020-08-22 18:59:01,958 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1078 to 1076. [2020-08-22 18:59:01,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1076 states. [2020-08-22 18:59:01,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1076 states to 1076 states and 1313 transitions. [2020-08-22 18:59:01,974 INFO L78 Accepts]: Start accepts. Automaton has 1076 states and 1313 transitions. Word has length 211 [2020-08-22 18:59:01,975 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 18:59:01,975 INFO L479 AbstractCegarLoop]: Abstraction has 1076 states and 1313 transitions. [2020-08-22 18:59:01,975 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-22 18:59:01,975 INFO L276 IsEmpty]: Start isEmpty. Operand 1076 states and 1313 transitions. [2020-08-22 18:59:01,979 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 213 [2020-08-22 18:59:01,979 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 18:59:01,979 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 18:59:01,980 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-22 18:59:01,980 INFO L427 AbstractCegarLoop]: === Iteration 7 === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 18:59:01,980 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 18:59:01,980 INFO L82 PathProgramCache]: Analyzing trace with hash 743106501, now seen corresponding path program 1 times [2020-08-22 18:59:01,981 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 18:59:01,981 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [741771129] [2020-08-22 18:59:01,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 18:59:01,994 INFO L288 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-08-22 18:59:02,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:59:02,071 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 18:59:02,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:59:02,097 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 18:59:02,097 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [741771129] [2020-08-22 18:59:02,098 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 18:59:02,098 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-22 18:59:02,098 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1843116218] [2020-08-22 18:59:02,099 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-22 18:59:02,099 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 18:59:02,099 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-22 18:59:02,100 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-22 18:59:02,100 INFO L87 Difference]: Start difference. First operand 1076 states and 1313 transitions. Second operand 3 states. [2020-08-22 18:59:02,252 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 18:59:02,252 INFO L93 Difference]: Finished difference Result 2024 states and 2498 transitions. [2020-08-22 18:59:02,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-22 18:59:02,253 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 212 [2020-08-22 18:59:02,254 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 18:59:02,263 INFO L225 Difference]: With dead ends: 2024 [2020-08-22 18:59:02,263 INFO L226 Difference]: Without dead ends: 1094 [2020-08-22 18:59:02,266 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-22 18:59:02,269 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1094 states. [2020-08-22 18:59:02,428 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1094 to 1084. [2020-08-22 18:59:02,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1084 states. [2020-08-22 18:59:02,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1084 states to 1084 states and 1317 transitions. [2020-08-22 18:59:02,435 INFO L78 Accepts]: Start accepts. Automaton has 1084 states and 1317 transitions. Word has length 212 [2020-08-22 18:59:02,436 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 18:59:02,437 INFO L479 AbstractCegarLoop]: Abstraction has 1084 states and 1317 transitions. [2020-08-22 18:59:02,437 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-22 18:59:02,437 INFO L276 IsEmpty]: Start isEmpty. Operand 1084 states and 1317 transitions. [2020-08-22 18:59:02,445 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 215 [2020-08-22 18:59:02,445 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 18:59:02,446 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 18:59:02,446 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-22 18:59:02,447 INFO L427 AbstractCegarLoop]: === Iteration 8 === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 18:59:02,447 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 18:59:02,448 INFO L82 PathProgramCache]: Analyzing trace with hash -1288323979, now seen corresponding path program 1 times [2020-08-22 18:59:02,448 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 18:59:02,449 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1506604995] [2020-08-22 18:59:02,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 18:59:02,466 INFO L288 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-08-22 18:59:02,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:59:02,577 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 18:59:02,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:59:02,660 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 18:59:02,661 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1506604995] [2020-08-22 18:59:02,661 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 18:59:02,661 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-22 18:59:02,662 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2080121328] [2020-08-22 18:59:02,663 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-22 18:59:02,663 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 18:59:02,663 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-22 18:59:02,664 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-22 18:59:02,664 INFO L87 Difference]: Start difference. First operand 1084 states and 1317 transitions. Second operand 3 states. [2020-08-22 18:59:02,997 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 18:59:02,997 INFO L93 Difference]: Finished difference Result 2946 states and 3629 transitions. [2020-08-22 18:59:02,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-22 18:59:02,998 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 214 [2020-08-22 18:59:02,999 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 18:59:03,014 INFO L225 Difference]: With dead ends: 2946 [2020-08-22 18:59:03,014 INFO L226 Difference]: Without dead ends: 2008 [2020-08-22 18:59:03,019 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-22 18:59:03,024 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2008 states. [2020-08-22 18:59:03,319 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2008 to 2006. [2020-08-22 18:59:03,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2006 states. [2020-08-22 18:59:03,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2006 states to 2006 states and 2449 transitions. [2020-08-22 18:59:03,390 INFO L78 Accepts]: Start accepts. Automaton has 2006 states and 2449 transitions. Word has length 214 [2020-08-22 18:59:03,391 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 18:59:03,391 INFO L479 AbstractCegarLoop]: Abstraction has 2006 states and 2449 transitions. [2020-08-22 18:59:03,391 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-22 18:59:03,391 INFO L276 IsEmpty]: Start isEmpty. Operand 2006 states and 2449 transitions. [2020-08-22 18:59:03,401 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 215 [2020-08-22 18:59:03,401 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 18:59:03,401 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 18:59:03,402 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-22 18:59:03,402 INFO L427 AbstractCegarLoop]: === Iteration 9 === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 18:59:03,402 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 18:59:03,403 INFO L82 PathProgramCache]: Analyzing trace with hash 1320463479, now seen corresponding path program 1 times [2020-08-22 18:59:03,403 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 18:59:03,403 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [674825935] [2020-08-22 18:59:03,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 18:59:03,413 INFO L288 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-08-22 18:59:03,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:59:03,468 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 18:59:03,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:59:03,497 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 18:59:03,498 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [674825935] [2020-08-22 18:59:03,498 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 18:59:03,498 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-22 18:59:03,503 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [5157716] [2020-08-22 18:59:03,503 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-22 18:59:03,503 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 18:59:03,504 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-22 18:59:03,504 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-22 18:59:03,505 INFO L87 Difference]: Start difference. First operand 2006 states and 2449 transitions. Second operand 3 states. [2020-08-22 18:59:03,756 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 18:59:03,757 INFO L93 Difference]: Finished difference Result 2961 states and 3623 transitions. [2020-08-22 18:59:03,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-22 18:59:03,758 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 214 [2020-08-22 18:59:03,758 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 18:59:03,773 INFO L225 Difference]: With dead ends: 2961 [2020-08-22 18:59:03,774 INFO L226 Difference]: Without dead ends: 2023 [2020-08-22 18:59:03,778 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-22 18:59:03,781 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2023 states. [2020-08-22 18:59:04,014 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2023 to 2021. [2020-08-22 18:59:04,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2021 states. [2020-08-22 18:59:04,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2021 states to 2021 states and 2455 transitions. [2020-08-22 18:59:04,029 INFO L78 Accepts]: Start accepts. Automaton has 2021 states and 2455 transitions. Word has length 214 [2020-08-22 18:59:04,029 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 18:59:04,030 INFO L479 AbstractCegarLoop]: Abstraction has 2021 states and 2455 transitions. [2020-08-22 18:59:04,031 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-22 18:59:04,032 INFO L276 IsEmpty]: Start isEmpty. Operand 2021 states and 2455 transitions. [2020-08-22 18:59:04,037 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 216 [2020-08-22 18:59:04,037 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 18:59:04,038 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 18:59:04,038 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-22 18:59:04,038 INFO L427 AbstractCegarLoop]: === Iteration 10 === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 18:59:04,039 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 18:59:04,039 INFO L82 PathProgramCache]: Analyzing trace with hash -955395695, now seen corresponding path program 1 times [2020-08-22 18:59:04,039 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 18:59:04,039 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [193162105] [2020-08-22 18:59:04,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 18:59:04,050 INFO L288 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-08-22 18:59:04,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:59:04,117 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 18:59:04,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:59:04,175 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 18:59:04,175 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [193162105] [2020-08-22 18:59:04,176 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 18:59:04,176 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-22 18:59:04,176 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [137583113] [2020-08-22 18:59:04,176 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-22 18:59:04,177 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 18:59:04,177 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-22 18:59:04,177 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-22 18:59:04,177 INFO L87 Difference]: Start difference. First operand 2021 states and 2455 transitions. Second operand 3 states. [2020-08-22 18:59:04,649 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 18:59:04,650 INFO L93 Difference]: Finished difference Result 3881 states and 4762 transitions. [2020-08-22 18:59:04,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-22 18:59:04,651 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 215 [2020-08-22 18:59:04,652 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 18:59:04,671 INFO L225 Difference]: With dead ends: 3881 [2020-08-22 18:59:04,671 INFO L226 Difference]: Without dead ends: 2940 [2020-08-22 18:59:04,676 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-22 18:59:04,682 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2940 states. [2020-08-22 18:59:05,067 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2940 to 2940. [2020-08-22 18:59:05,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2940 states. [2020-08-22 18:59:05,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2940 states to 2940 states and 3582 transitions. [2020-08-22 18:59:05,081 INFO L78 Accepts]: Start accepts. Automaton has 2940 states and 3582 transitions. Word has length 215 [2020-08-22 18:59:05,081 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 18:59:05,081 INFO L479 AbstractCegarLoop]: Abstraction has 2940 states and 3582 transitions. [2020-08-22 18:59:05,082 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-22 18:59:05,082 INFO L276 IsEmpty]: Start isEmpty. Operand 2940 states and 3582 transitions. [2020-08-22 18:59:05,088 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 226 [2020-08-22 18:59:05,089 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 18:59:05,089 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 18:59:05,089 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-22 18:59:05,090 INFO L427 AbstractCegarLoop]: === Iteration 11 === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 18:59:05,090 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 18:59:05,090 INFO L82 PathProgramCache]: Analyzing trace with hash -2117708685, now seen corresponding path program 1 times [2020-08-22 18:59:05,090 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 18:59:05,090 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1826896363] [2020-08-22 18:59:05,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 18:59:05,096 INFO L288 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-08-22 18:59:05,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:59:05,144 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 18:59:05,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:59:05,173 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 18:59:05,173 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1826896363] [2020-08-22 18:59:05,174 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 18:59:05,174 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-22 18:59:05,174 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [590791084] [2020-08-22 18:59:05,175 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-22 18:59:05,175 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 18:59:05,175 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-22 18:59:05,175 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-22 18:59:05,176 INFO L87 Difference]: Start difference. First operand 2940 states and 3582 transitions. Second operand 3 states. [2020-08-22 18:59:05,795 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 18:59:05,795 INFO L93 Difference]: Finished difference Result 6394 states and 8046 transitions. [2020-08-22 18:59:05,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-22 18:59:05,796 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 225 [2020-08-22 18:59:05,796 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 18:59:05,815 INFO L225 Difference]: With dead ends: 6394 [2020-08-22 18:59:05,815 INFO L226 Difference]: Without dead ends: 3603 [2020-08-22 18:59:05,823 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-22 18:59:05,827 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3603 states. [2020-08-22 18:59:06,159 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3603 to 3417. [2020-08-22 18:59:06,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3417 states. [2020-08-22 18:59:06,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3417 states to 3417 states and 4098 transitions. [2020-08-22 18:59:06,170 INFO L78 Accepts]: Start accepts. Automaton has 3417 states and 4098 transitions. Word has length 225 [2020-08-22 18:59:06,171 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 18:59:06,171 INFO L479 AbstractCegarLoop]: Abstraction has 3417 states and 4098 transitions. [2020-08-22 18:59:06,171 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-22 18:59:06,171 INFO L276 IsEmpty]: Start isEmpty. Operand 3417 states and 4098 transitions. [2020-08-22 18:59:06,178 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 226 [2020-08-22 18:59:06,179 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 18:59:06,179 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 18:59:06,180 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-08-22 18:59:06,180 INFO L427 AbstractCegarLoop]: === Iteration 12 === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 18:59:06,180 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 18:59:06,180 INFO L82 PathProgramCache]: Analyzing trace with hash 333657299, now seen corresponding path program 1 times [2020-08-22 18:59:06,181 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 18:59:06,181 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1286804426] [2020-08-22 18:59:06,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 18:59:06,187 INFO L288 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-08-22 18:59:06,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:59:06,233 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 18:59:06,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:59:06,258 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 18:59:06,259 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1286804426] [2020-08-22 18:59:06,259 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 18:59:06,259 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-22 18:59:06,260 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [942912424] [2020-08-22 18:59:06,260 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-22 18:59:06,260 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 18:59:06,261 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-22 18:59:06,261 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-22 18:59:06,261 INFO L87 Difference]: Start difference. First operand 3417 states and 4098 transitions. Second operand 3 states. [2020-08-22 18:59:06,651 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 18:59:06,652 INFO L93 Difference]: Finished difference Result 7010 states and 8492 transitions. [2020-08-22 18:59:06,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-22 18:59:06,653 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 225 [2020-08-22 18:59:06,653 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 18:59:06,673 INFO L225 Difference]: With dead ends: 7010 [2020-08-22 18:59:06,673 INFO L226 Difference]: Without dead ends: 3754 [2020-08-22 18:59:06,682 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-22 18:59:06,687 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3754 states. [2020-08-22 18:59:06,981 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3754 to 3630. [2020-08-22 18:59:06,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3630 states. [2020-08-22 18:59:06,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3630 states to 3630 states and 4326 transitions. [2020-08-22 18:59:06,995 INFO L78 Accepts]: Start accepts. Automaton has 3630 states and 4326 transitions. Word has length 225 [2020-08-22 18:59:06,996 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 18:59:06,996 INFO L479 AbstractCegarLoop]: Abstraction has 3630 states and 4326 transitions. [2020-08-22 18:59:06,996 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-22 18:59:06,996 INFO L276 IsEmpty]: Start isEmpty. Operand 3630 states and 4326 transitions. [2020-08-22 18:59:07,005 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 241 [2020-08-22 18:59:07,005 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 18:59:07,005 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 18:59:07,006 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-08-22 18:59:07,006 INFO L427 AbstractCegarLoop]: === Iteration 13 === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 18:59:07,006 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 18:59:07,006 INFO L82 PathProgramCache]: Analyzing trace with hash 2067308732, now seen corresponding path program 1 times [2020-08-22 18:59:07,007 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 18:59:07,007 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2072858160] [2020-08-22 18:59:07,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 18:59:07,013 INFO L288 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-08-22 18:59:07,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:59:07,060 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 18:59:07,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:59:07,090 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 18:59:07,091 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2072858160] [2020-08-22 18:59:07,091 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 18:59:07,092 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-22 18:59:07,092 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1684590380] [2020-08-22 18:59:07,093 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-22 18:59:07,093 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 18:59:07,093 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-22 18:59:07,093 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-22 18:59:07,093 INFO L87 Difference]: Start difference. First operand 3630 states and 4326 transitions. Second operand 3 states. [2020-08-22 18:59:07,484 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 18:59:07,484 INFO L93 Difference]: Finished difference Result 7099 states and 8504 transitions. [2020-08-22 18:59:07,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-22 18:59:07,485 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 240 [2020-08-22 18:59:07,486 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 18:59:07,510 INFO L225 Difference]: With dead ends: 7099 [2020-08-22 18:59:07,510 INFO L226 Difference]: Without dead ends: 4779 [2020-08-22 18:59:07,519 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-22 18:59:07,526 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4779 states. [2020-08-22 18:59:07,913 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4779 to 4779. [2020-08-22 18:59:07,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4779 states. [2020-08-22 18:59:07,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4779 states to 4779 states and 5705 transitions. [2020-08-22 18:59:07,933 INFO L78 Accepts]: Start accepts. Automaton has 4779 states and 5705 transitions. Word has length 240 [2020-08-22 18:59:07,934 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 18:59:07,934 INFO L479 AbstractCegarLoop]: Abstraction has 4779 states and 5705 transitions. [2020-08-22 18:59:07,934 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-22 18:59:07,934 INFO L276 IsEmpty]: Start isEmpty. Operand 4779 states and 5705 transitions. [2020-08-22 18:59:07,949 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 250 [2020-08-22 18:59:07,950 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 18:59:07,950 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 18:59:07,950 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-08-22 18:59:07,951 INFO L427 AbstractCegarLoop]: === Iteration 14 === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 18:59:07,951 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 18:59:07,951 INFO L82 PathProgramCache]: Analyzing trace with hash -1266606843, now seen corresponding path program 1 times [2020-08-22 18:59:07,952 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 18:59:07,952 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1945677145] [2020-08-22 18:59:07,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 18:59:07,959 INFO L288 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-08-22 18:59:07,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:59:08,029 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 18:59:08,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:59:08,071 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 18:59:08,072 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1945677145] [2020-08-22 18:59:08,072 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 18:59:08,072 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-22 18:59:08,072 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [642104971] [2020-08-22 18:59:08,073 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-22 18:59:08,073 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 18:59:08,073 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-22 18:59:08,074 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-22 18:59:08,074 INFO L87 Difference]: Start difference. First operand 4779 states and 5705 transitions. Second operand 3 states. [2020-08-22 18:59:08,634 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 18:59:08,634 INFO L93 Difference]: Finished difference Result 9821 states and 11850 transitions. [2020-08-22 18:59:08,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-22 18:59:08,635 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 249 [2020-08-22 18:59:08,635 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 18:59:08,658 INFO L225 Difference]: With dead ends: 9821 [2020-08-22 18:59:08,658 INFO L226 Difference]: Without dead ends: 5203 [2020-08-22 18:59:08,670 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-22 18:59:08,676 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5203 states. [2020-08-22 18:59:08,945 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5203 to 5095. [2020-08-22 18:59:08,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5095 states. [2020-08-22 18:59:08,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5095 states to 5095 states and 6041 transitions. [2020-08-22 18:59:08,960 INFO L78 Accepts]: Start accepts. Automaton has 5095 states and 6041 transitions. Word has length 249 [2020-08-22 18:59:08,960 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 18:59:08,960 INFO L479 AbstractCegarLoop]: Abstraction has 5095 states and 6041 transitions. [2020-08-22 18:59:08,960 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-22 18:59:08,961 INFO L276 IsEmpty]: Start isEmpty. Operand 5095 states and 6041 transitions. [2020-08-22 18:59:08,971 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 269 [2020-08-22 18:59:08,971 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 18:59:08,971 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 18:59:08,972 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-08-22 18:59:08,972 INFO L427 AbstractCegarLoop]: === Iteration 15 === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 18:59:08,972 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 18:59:08,972 INFO L82 PathProgramCache]: Analyzing trace with hash 1378985242, now seen corresponding path program 1 times [2020-08-22 18:59:08,973 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 18:59:08,973 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1516088993] [2020-08-22 18:59:08,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 18:59:08,980 INFO L288 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-08-22 18:59:09,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:59:09,050 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 18:59:09,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:59:09,087 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 18:59:09,088 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1516088993] [2020-08-22 18:59:09,088 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 18:59:09,088 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-22 18:59:09,088 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [944053475] [2020-08-22 18:59:09,089 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-22 18:59:09,089 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 18:59:09,089 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-22 18:59:09,090 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-22 18:59:09,090 INFO L87 Difference]: Start difference. First operand 5095 states and 6041 transitions. Second operand 5 states. [2020-08-22 18:59:09,946 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 18:59:09,947 INFO L93 Difference]: Finished difference Result 12453 states and 15078 transitions. [2020-08-22 18:59:09,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-08-22 18:59:09,948 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 268 [2020-08-22 18:59:09,948 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 18:59:09,967 INFO L225 Difference]: With dead ends: 12453 [2020-08-22 18:59:09,967 INFO L226 Difference]: Without dead ends: 7519 [2020-08-22 18:59:09,982 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-08-22 18:59:09,991 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7519 states. [2020-08-22 18:59:10,303 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7519 to 5852. [2020-08-22 18:59:10,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5852 states. [2020-08-22 18:59:10,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5852 states to 5852 states and 6925 transitions. [2020-08-22 18:59:10,317 INFO L78 Accepts]: Start accepts. Automaton has 5852 states and 6925 transitions. Word has length 268 [2020-08-22 18:59:10,318 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 18:59:10,318 INFO L479 AbstractCegarLoop]: Abstraction has 5852 states and 6925 transitions. [2020-08-22 18:59:10,318 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-22 18:59:10,318 INFO L276 IsEmpty]: Start isEmpty. Operand 5852 states and 6925 transitions. [2020-08-22 18:59:10,328 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 272 [2020-08-22 18:59:10,329 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 18:59:10,329 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 18:59:10,329 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-08-22 18:59:10,330 INFO L427 AbstractCegarLoop]: === Iteration 16 === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 18:59:10,330 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 18:59:10,330 INFO L82 PathProgramCache]: Analyzing trace with hash 1330691005, now seen corresponding path program 2 times [2020-08-22 18:59:10,330 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 18:59:10,331 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1224517156] [2020-08-22 18:59:10,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 18:59:10,340 INFO L288 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-08-22 18:59:10,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:59:10,403 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 18:59:10,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:59:10,495 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 18:59:10,496 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1224517156] [2020-08-22 18:59:10,496 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 18:59:10,496 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-22 18:59:10,496 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1237632282] [2020-08-22 18:59:10,497 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-22 18:59:10,497 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 18:59:10,497 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-22 18:59:10,498 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-08-22 18:59:10,498 INFO L87 Difference]: Start difference. First operand 5852 states and 6925 transitions. Second operand 5 states. [2020-08-22 18:59:11,075 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 18:59:11,075 INFO L93 Difference]: Finished difference Result 9945 states and 11708 transitions. [2020-08-22 18:59:11,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-08-22 18:59:11,076 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 271 [2020-08-22 18:59:11,077 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 18:59:11,095 INFO L225 Difference]: With dead ends: 9945 [2020-08-22 18:59:11,095 INFO L226 Difference]: Without dead ends: 7016 [2020-08-22 18:59:11,107 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-08-22 18:59:11,115 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7016 states. [2020-08-22 18:59:11,562 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7016 to 5852. [2020-08-22 18:59:11,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5852 states. [2020-08-22 18:59:11,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5852 states to 5852 states and 6925 transitions. [2020-08-22 18:59:11,570 INFO L78 Accepts]: Start accepts. Automaton has 5852 states and 6925 transitions. Word has length 271 [2020-08-22 18:59:11,571 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 18:59:11,571 INFO L479 AbstractCegarLoop]: Abstraction has 5852 states and 6925 transitions. [2020-08-22 18:59:11,571 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-22 18:59:11,571 INFO L276 IsEmpty]: Start isEmpty. Operand 5852 states and 6925 transitions. [2020-08-22 18:59:11,579 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 272 [2020-08-22 18:59:11,579 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 18:59:11,579 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 18:59:11,580 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-08-22 18:59:11,580 INFO L427 AbstractCegarLoop]: === Iteration 17 === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 18:59:11,580 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 18:59:11,580 INFO L82 PathProgramCache]: Analyzing trace with hash -1857770431, now seen corresponding path program 1 times [2020-08-22 18:59:11,580 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 18:59:11,581 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [764153889] [2020-08-22 18:59:11,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 18:59:11,591 INFO L288 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-08-22 18:59:11,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:59:11,647 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 18:59:11,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:59:11,683 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 18:59:11,683 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [764153889] [2020-08-22 18:59:11,684 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 18:59:11,684 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-22 18:59:11,684 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1607667851] [2020-08-22 18:59:11,685 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-22 18:59:11,685 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 18:59:11,685 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-22 18:59:11,685 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-22 18:59:11,685 INFO L87 Difference]: Start difference. First operand 5852 states and 6925 transitions. Second operand 4 states. [2020-08-22 18:59:12,905 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 18:59:12,905 INFO L93 Difference]: Finished difference Result 12282 states and 14635 transitions. [2020-08-22 18:59:12,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-22 18:59:12,906 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 271 [2020-08-22 18:59:12,906 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 18:59:12,924 INFO L225 Difference]: With dead ends: 12282 [2020-08-22 18:59:12,925 INFO L226 Difference]: Without dead ends: 9349 [2020-08-22 18:59:12,933 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-08-22 18:59:12,943 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9349 states. [2020-08-22 18:59:13,350 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9349 to 5924. [2020-08-22 18:59:13,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5924 states. [2020-08-22 18:59:13,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5924 states to 5924 states and 7013 transitions. [2020-08-22 18:59:13,363 INFO L78 Accepts]: Start accepts. Automaton has 5924 states and 7013 transitions. Word has length 271 [2020-08-22 18:59:13,364 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 18:59:13,364 INFO L479 AbstractCegarLoop]: Abstraction has 5924 states and 7013 transitions. [2020-08-22 18:59:13,364 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-22 18:59:13,364 INFO L276 IsEmpty]: Start isEmpty. Operand 5924 states and 7013 transitions. [2020-08-22 18:59:13,372 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 272 [2020-08-22 18:59:13,372 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 18:59:13,373 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 18:59:13,373 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-08-22 18:59:13,373 INFO L427 AbstractCegarLoop]: === Iteration 18 === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 18:59:13,373 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 18:59:13,373 INFO L82 PathProgramCache]: Analyzing trace with hash -417971039, now seen corresponding path program 3 times [2020-08-22 18:59:13,374 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 18:59:13,374 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [97066576] [2020-08-22 18:59:13,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 18:59:13,379 INFO L288 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-08-22 18:59:13,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:59:13,441 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 18:59:13,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:59:13,480 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 18:59:13,481 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [97066576] [2020-08-22 18:59:13,481 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 18:59:13,481 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-22 18:59:13,481 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [242428308] [2020-08-22 18:59:13,482 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-22 18:59:13,482 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 18:59:13,482 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-22 18:59:13,483 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-08-22 18:59:13,483 INFO L87 Difference]: Start difference. First operand 5924 states and 7013 transitions. Second operand 5 states. [2020-08-22 18:59:14,435 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 18:59:14,435 INFO L93 Difference]: Finished difference Result 9629 states and 11348 transitions. [2020-08-22 18:59:14,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-08-22 18:59:14,436 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 271 [2020-08-22 18:59:14,436 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 18:59:14,447 INFO L225 Difference]: With dead ends: 9629 [2020-08-22 18:59:14,447 INFO L226 Difference]: Without dead ends: 6628 [2020-08-22 18:59:14,455 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-08-22 18:59:14,461 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6628 states. [2020-08-22 18:59:14,882 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6628 to 6004. [2020-08-22 18:59:14,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6004 states. [2020-08-22 18:59:14,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6004 states to 6004 states and 7101 transitions. [2020-08-22 18:59:14,892 INFO L78 Accepts]: Start accepts. Automaton has 6004 states and 7101 transitions. Word has length 271 [2020-08-22 18:59:14,893 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 18:59:14,893 INFO L479 AbstractCegarLoop]: Abstraction has 6004 states and 7101 transitions. [2020-08-22 18:59:14,893 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-22 18:59:14,893 INFO L276 IsEmpty]: Start isEmpty. Operand 6004 states and 7101 transitions. [2020-08-22 18:59:14,900 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 274 [2020-08-22 18:59:14,900 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 18:59:14,900 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 5, 5, 4, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 18:59:14,901 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-08-22 18:59:14,901 INFO L427 AbstractCegarLoop]: === Iteration 19 === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 18:59:14,901 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 18:59:14,901 INFO L82 PathProgramCache]: Analyzing trace with hash -1726538569, now seen corresponding path program 1 times [2020-08-22 18:59:14,902 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 18:59:14,902 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1699423244] [2020-08-22 18:59:14,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 18:59:14,914 INFO L288 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-08-22 18:59:14,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:59:14,965 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 18:59:14,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:59:15,002 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 18:59:15,003 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1699423244] [2020-08-22 18:59:15,003 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 18:59:15,003 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-22 18:59:15,004 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [939358319] [2020-08-22 18:59:15,004 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-22 18:59:15,004 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 18:59:15,005 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-22 18:59:15,005 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-22 18:59:15,005 INFO L87 Difference]: Start difference. First operand 6004 states and 7101 transitions. Second operand 3 states. [2020-08-22 18:59:15,507 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 18:59:15,508 INFO L93 Difference]: Finished difference Result 11204 states and 13284 transitions. [2020-08-22 18:59:15,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-22 18:59:15,508 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 273 [2020-08-22 18:59:15,509 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 18:59:15,516 INFO L225 Difference]: With dead ends: 11204 [2020-08-22 18:59:15,516 INFO L226 Difference]: Without dead ends: 6816 [2020-08-22 18:59:15,527 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-22 18:59:15,533 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6816 states. [2020-08-22 18:59:15,931 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6816 to 6816. [2020-08-22 18:59:15,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6816 states. [2020-08-22 18:59:15,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6816 states to 6816 states and 8055 transitions. [2020-08-22 18:59:15,943 INFO L78 Accepts]: Start accepts. Automaton has 6816 states and 8055 transitions. Word has length 273 [2020-08-22 18:59:15,944 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 18:59:15,944 INFO L479 AbstractCegarLoop]: Abstraction has 6816 states and 8055 transitions. [2020-08-22 18:59:15,944 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-22 18:59:15,944 INFO L276 IsEmpty]: Start isEmpty. Operand 6816 states and 8055 transitions. [2020-08-22 18:59:15,951 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 275 [2020-08-22 18:59:15,951 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 18:59:15,951 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 5, 5, 4, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 18:59:15,952 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-08-22 18:59:15,952 INFO L427 AbstractCegarLoop]: === Iteration 20 === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 18:59:15,952 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 18:59:15,952 INFO L82 PathProgramCache]: Analyzing trace with hash 127538036, now seen corresponding path program 1 times [2020-08-22 18:59:15,953 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 18:59:15,953 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1186267424] [2020-08-22 18:59:15,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 18:59:15,963 INFO L288 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-08-22 18:59:16,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-22 18:59:16,022 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-08-22 18:59:16,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-22 18:59:16,084 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-08-22 18:59:16,208 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-22 18:59:16,208 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-22 18:59:16,210 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-08-22 18:59:16,253 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.08 06:59:16 BoogieIcfgContainer [2020-08-22 18:59:16,253 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-22 18:59:16,255 INFO L168 Benchmark]: Toolchain (without parser) took 19869.80 ms. Allocated memory was 139.5 MB in the beginning and 1.2 GB in the end (delta: 1.1 GB). Free memory was 103.3 MB in the beginning and 588.2 MB in the end (delta: -484.9 MB). Peak memory consumption was 582.6 MB. Max. memory is 7.1 GB. [2020-08-22 18:59:16,256 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 139.5 MB. Free memory was 122.0 MB in the beginning and 121.8 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. [2020-08-22 18:59:16,257 INFO L168 Benchmark]: CACSL2BoogieTranslator took 616.86 ms. Allocated memory was 139.5 MB in the beginning and 202.9 MB in the end (delta: 63.4 MB). Free memory was 103.1 MB in the beginning and 178.0 MB in the end (delta: -74.9 MB). Peak memory consumption was 26.0 MB. Max. memory is 7.1 GB. [2020-08-22 18:59:16,257 INFO L168 Benchmark]: Boogie Preprocessor took 72.43 ms. Allocated memory is still 202.9 MB. Free memory was 178.0 MB in the beginning and 175.3 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 7.1 GB. [2020-08-22 18:59:16,258 INFO L168 Benchmark]: RCFGBuilder took 971.01 ms. Allocated memory is still 202.9 MB. Free memory was 175.3 MB in the beginning and 111.9 MB in the end (delta: 63.5 MB). Peak memory consumption was 63.5 MB. Max. memory is 7.1 GB. [2020-08-22 18:59:16,259 INFO L168 Benchmark]: TraceAbstraction took 18203.97 ms. Allocated memory was 202.9 MB in the beginning and 1.2 GB in the end (delta: 1.0 GB). Free memory was 111.2 MB in the beginning and 588.2 MB in the end (delta: -477.0 MB). Peak memory consumption was 527.0 MB. Max. memory is 7.1 GB. [2020-08-22 18:59:16,261 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 139.5 MB. Free memory was 122.0 MB in the beginning and 121.8 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 616.86 ms. Allocated memory was 139.5 MB in the beginning and 202.9 MB in the end (delta: 63.4 MB). Free memory was 103.1 MB in the beginning and 178.0 MB in the end (delta: -74.9 MB). Peak memory consumption was 26.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 72.43 ms. Allocated memory is still 202.9 MB. Free memory was 178.0 MB in the beginning and 175.3 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 7.1 GB. * RCFGBuilder took 971.01 ms. Allocated memory is still 202.9 MB. Free memory was 175.3 MB in the beginning and 111.9 MB in the end (delta: 63.5 MB). Peak memory consumption was 63.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 18203.97 ms. Allocated memory was 202.9 MB in the beginning and 1.2 GB in the end (delta: 1.0 GB). Free memory was 111.2 MB in the beginning and 588.2 MB in the end (delta: -477.0 MB). Peak memory consumption was 527.0 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 548]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L553] int s ; [L557] s = 12292 [L558] CALL ssl3_connect(s) [L11] int s__info_callback = __VERIFIER_nondet_int() ; [L12] int s__in_handshake = __VERIFIER_nondet_int() ; [L13] int s__state ; [L14] int s__new_session ; [L15] int s__server ; [L16] int s__version = __VERIFIER_nondet_int() ; [L17] int s__type ; [L18] int s__init_num ; [L19] int s__bbio = __VERIFIER_nondet_int() ; [L20] int s__wbio = __VERIFIER_nondet_int() ; [L21] int s__hit = __VERIFIER_nondet_int() ; [L22] int s__rwstate ; [L23] int s__init_buf___0 = 1; [L24] int s__debug = __VERIFIER_nondet_int() ; [L25] int s__shutdown ; [L26] int s__ctx__info_callback = __VERIFIER_nondet_int() ; [L27] int s__ctx__stats__sess_connect_renegotiate = __VERIFIER_nondet_int() ; [L28] int s__ctx__stats__sess_connect = __VERIFIER_nondet_int() ; [L29] int s__ctx__stats__sess_hit = __VERIFIER_nondet_int() ; [L30] int s__ctx__stats__sess_connect_good = __VERIFIER_nondet_int() ; [L31] int s__s3__change_cipher_spec ; [L32] int s__s3__flags ; [L33] int s__s3__delay_buf_pop_ret ; [L34] int s__s3__tmp__cert_req = __VERIFIER_nondet_int() ; [L35] int s__s3__tmp__new_compression = __VERIFIER_nondet_int() ; [L36] int s__s3__tmp__reuse_message = __VERIFIER_nondet_int() ; [L37] int s__s3__tmp__new_cipher = __VERIFIER_nondet_int() ; [L38] int s__s3__tmp__new_cipher__algorithms = __VERIFIER_nondet_int() ; [L39] int s__s3__tmp__next_state___0 ; [L40] int s__s3__tmp__new_compression__id = __VERIFIER_nondet_int() ; [L41] int s__session__cipher ; [L42] int s__session__compress_meth ; [L43] int buf ; [L44] unsigned long tmp ; [L45] unsigned long l ; [L46] int num1 ; [L47] int cb ; [L48] int ret ; [L49] int new_state ; [L50] int state ; [L51] int skip ; [L52] int tmp___0 ; [L53] int tmp___1 = __VERIFIER_nondet_int() ; [L54] int tmp___2 = __VERIFIER_nondet_int() ; [L55] int tmp___3 = __VERIFIER_nondet_int() ; [L56] int tmp___4 = __VERIFIER_nondet_int() ; [L57] int tmp___5 = __VERIFIER_nondet_int() ; [L58] int tmp___6 = __VERIFIER_nondet_int() ; [L59] int tmp___7 = __VERIFIER_nondet_int() ; [L60] int tmp___8 = __VERIFIER_nondet_int() ; [L61] int tmp___9 = __VERIFIER_nondet_int() ; [L62] int blastFlag ; [L63] int __cil_tmp55 ; [L64] unsigned long __cil_tmp56 ; [L65] long __cil_tmp57 ; [L66] long __cil_tmp58 ; [L67] long __cil_tmp59 ; [L68] long __cil_tmp60 ; [L69] long __cil_tmp61 ; [L70] long __cil_tmp62 ; [L71] long __cil_tmp63 ; [L72] long __cil_tmp64 ; [L73] long __cil_tmp65 ; [L77] s__state = initial_state [L78] blastFlag = 0 [L79] tmp = __VERIFIER_nondet_int() [L80] cb = 0 [L81] ret = -1 [L82] skip = 0 [L83] tmp___0 = 0 [L84] COND TRUE s__info_callback != 0 [L85] cb = s__info_callback [L91] s__in_handshake ++ [L92] COND FALSE !(tmp___1 - 12288) [L98] COND TRUE 1 [L100] state = s__state [L101] COND TRUE s__state == 12292 [L203] s__new_session = 1 [L204] s__state = 4096 [L205] s__ctx__stats__sess_connect_renegotiate ++ [L210] s__server = 0 [L211] COND TRUE cb != 0 [L215] __cil_tmp55 = s__version - 65280 [L216] COND FALSE !(__cil_tmp55 != 768) [L221] s__type = 4096 [L222] COND FALSE !(s__init_buf___0 == 0) [L234] COND FALSE !(! tmp___4) [L238] COND FALSE !(! tmp___5) [L242] s__state = 4368 [L243] s__ctx__stats__sess_connect ++ [L244] s__init_num = 0 [L520] COND FALSE !(! s__s3__tmp__reuse_message) [L537] skip = 0 [L98] COND TRUE 1 [L100] state = s__state [L101] COND FALSE !(s__state == 12292) [L104] COND FALSE !(s__state == 16384) [L107] COND FALSE !(s__state == 4096) [L110] COND FALSE !(s__state == 20480) [L113] COND FALSE !(s__state == 4099) [L116] COND TRUE s__state == 4368 [L248] s__shutdown = 0 [L249] ret = __VERIFIER_nondet_int() [L250] COND TRUE blastFlag == 0 [L251] blastFlag = 1 [L257] COND FALSE !(ret <= 0) [L260] s__state = 4384 [L261] s__init_num = 0 [L262] COND TRUE s__bbio != s__wbio [L520] COND FALSE !(! s__s3__tmp__reuse_message) [L537] skip = 0 [L98] COND TRUE 1 [L100] state = s__state [L101] COND FALSE !(s__state == 12292) [L104] COND FALSE !(s__state == 16384) [L107] COND FALSE !(s__state == 4096) [L110] COND FALSE !(s__state == 20480) [L113] COND FALSE !(s__state == 4099) [L116] COND FALSE !(s__state == 4368) [L119] COND FALSE !(s__state == 4369) [L122] COND TRUE s__state == 4384 [L268] ret = __VERIFIER_nondet_int() [L269] COND TRUE blastFlag == 1 [L270] blastFlag = 2 [L272] COND FALSE !(ret <= 0) [L275] COND FALSE !(\read(s__hit)) [L278] s__state = 4400 [L280] s__init_num = 0 [L520] COND FALSE !(! s__s3__tmp__reuse_message) [L537] skip = 0 [L98] COND TRUE 1 [L100] state = s__state [L101] COND FALSE !(s__state == 12292) [L104] COND FALSE !(s__state == 16384) [L107] COND FALSE !(s__state == 4096) [L110] COND FALSE !(s__state == 20480) [L113] COND FALSE !(s__state == 4099) [L116] COND FALSE !(s__state == 4368) [L119] COND FALSE !(s__state == 4369) [L122] COND FALSE !(s__state == 4384) [L125] COND FALSE !(s__state == 4385) [L128] COND TRUE s__state == 4400 [L285] __cil_tmp56 = (unsigned long )s__s3__tmp__new_cipher__algorithms [L286] COND FALSE !(__cil_tmp56 - 256UL) [L289] ret = __VERIFIER_nondet_int() [L290] COND TRUE blastFlag == 2 [L291] blastFlag = 3 [L293] COND FALSE !(ret <= 0) [L298] s__state = 4416 [L299] s__init_num = 0 [L520] COND FALSE !(! s__s3__tmp__reuse_message) [L537] skip = 0 [L98] COND TRUE 1 [L100] state = s__state [L101] COND FALSE !(s__state == 12292) [L104] COND FALSE !(s__state == 16384) [L107] COND FALSE !(s__state == 4096) [L110] COND FALSE !(s__state == 20480) [L113] COND FALSE !(s__state == 4099) [L116] COND FALSE !(s__state == 4368) [L119] COND FALSE !(s__state == 4369) [L122] COND FALSE !(s__state == 4384) [L125] COND FALSE !(s__state == 4385) [L128] COND FALSE !(s__state == 4400) [L131] COND FALSE !(s__state == 4401) [L134] COND TRUE s__state == 4416 [L303] ret = __VERIFIER_nondet_int() [L304] COND TRUE blastFlag == 3 [L305] blastFlag = 4 [L307] COND FALSE !(ret <= 0) [L310] s__state = 4432 [L311] s__init_num = 0 [L312] COND FALSE !(! tmp___6) [L520] COND FALSE !(! s__s3__tmp__reuse_message) [L537] skip = 0 [L98] COND TRUE 1 [L100] state = s__state [L101] COND FALSE !(s__state == 12292) [L104] COND FALSE !(s__state == 16384) [L107] COND FALSE !(s__state == 4096) [L110] COND FALSE !(s__state == 20480) [L113] COND FALSE !(s__state == 4099) [L116] COND FALSE !(s__state == 4368) [L119] COND FALSE !(s__state == 4369) [L122] COND FALSE !(s__state == 4384) [L125] COND FALSE !(s__state == 4385) [L128] COND FALSE !(s__state == 4400) [L131] COND FALSE !(s__state == 4401) [L134] COND FALSE !(s__state == 4416) [L137] COND FALSE !(s__state == 4417) [L140] COND TRUE s__state == 4432 [L319] ret = __VERIFIER_nondet_int() [L320] COND TRUE blastFlag == 4 [L548] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 385 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 18.0s, OverallIterations: 20, TraceHistogramMax: 6, AutomataDifference: 9.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 8564 SDtfs, 5208 SDslu, 9268 SDs, 0 SdLazy, 2087 SolverSat, 270 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 2.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 126 GetRequests, 83 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=6816occurred in iteration=19, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 5.0s AutomataMinimizationTime, 19 MinimizatonAttempts, 7407 StatesRemovedByMinimization, 15 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: No data available, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...