/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_4.cil-2.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-3af5e1f [2020-09-04 16:33:10,712 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-04 16:33:10,717 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-04 16:33:10,764 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2020-09-04 16:33:10,794 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-04 16:33:10,797 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-04 16:33:10,800 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-04 16:33:10,802 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-04 16:33:10,804 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-04 16:33:10,805 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-04 16:33:10,807 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-04 16:33:10,817 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-04 16:33:10,819 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-04 16:33:10,820 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-04 16:33:10,822 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-04 16:33:10,823 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-04 16:33:10,827 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-09-04 16:33:10,838 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-04 16:33:10,839 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-04 16:33:10,841 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-04 16:33:10,842 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2020-09-04 16:33:10,862 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-04 16:33:10,863 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-04 16:33:10,865 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-04 16:33:10,866 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-04 16:33:10,866 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-04 16:33:10,866 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-04 16:33:10,867 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-04 16:33:10,867 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-04 16:33:10,867 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-04 16:33:10,867 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-04 16:33:10,868 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-04 16:33:10,869 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-04 16:33:10,869 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-04 16:33:10,869 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-04 16:33:10,870 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-04 16:33:10,870 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-09-04 16:33:10,870 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-04 16:33:10,870 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-04 16:33:10,870 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-04 16:33:10,871 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-04 16:33:10,871 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-09-04 16:33:10,871 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-04 16:33:10,871 INFO L138 SettingsManager]: * Use separate solver for trace checks=false [2020-09-04 16:33:11,287 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-04 16:33:11,315 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-04 16:33:11,320 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-04 16:33:11,323 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-04 16:33:11,323 INFO L275 PluginConnector]: CDTParser initialized [2020-09-04 16:33:11,325 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ssh-simplified/s3_clnt_4.cil-2.c [2020-09-04 16:33:11,426 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/94d7c77a2/92adab2c94ef47d9aea4a1f7f63db0f4/FLAGc2dc60eb8 [2020-09-04 16:33:12,030 INFO L306 CDTParser]: Found 1 translation units. [2020-09-04 16:33:12,031 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/ssh-simplified/s3_clnt_4.cil-2.c [2020-09-04 16:33:12,045 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/94d7c77a2/92adab2c94ef47d9aea4a1f7f63db0f4/FLAGc2dc60eb8 [2020-09-04 16:33:12,315 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/94d7c77a2/92adab2c94ef47d9aea4a1f7f63db0f4 [2020-09-04 16:33:12,332 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-04 16:33:12,335 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-04 16:33:12,337 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-04 16:33:12,337 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-04 16:33:12,343 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-04 16:33:12,344 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.09 04:33:12" (1/1) ... [2020-09-04 16:33:12,350 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5fbadd11 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 04:33:12, skipping insertion in model container [2020-09-04 16:33:12,350 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.09 04:33:12" (1/1) ... [2020-09-04 16:33:12,362 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-04 16:33:12,445 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-04 16:33:12,844 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-04 16:33:12,850 INFO L203 MainTranslator]: Completed pre-run [2020-09-04 16:33:13,021 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-04 16:33:13,044 INFO L208 MainTranslator]: Completed translation [2020-09-04 16:33:13,045 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 04:33:13 WrapperNode [2020-09-04 16:33:13,045 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-04 16:33:13,046 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-04 16:33:13,046 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-04 16:33:13,046 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-04 16:33:13,065 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 04:33:13" (1/1) ... [2020-09-04 16:33:13,065 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 04:33:13" (1/1) ... [2020-09-04 16:33:13,077 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 04:33:13" (1/1) ... [2020-09-04 16:33:13,077 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 04:33:13" (1/1) ... [2020-09-04 16:33:13,090 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 04:33:13" (1/1) ... [2020-09-04 16:33:13,106 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 04:33:13" (1/1) ... [2020-09-04 16:33:13,112 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 04:33:13" (1/1) ... [2020-09-04 16:33:13,119 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-04 16:33:13,119 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-04 16:33:13,120 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-04 16:33:13,125 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-04 16:33:13,127 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 04:33:13" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/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 [2020-09-04 16:33:13,206 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-04 16:33:13,206 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-04 16:33:13,206 INFO L138 BoogieDeclarations]: Found implementation of procedure ssl3_connect [2020-09-04 16:33:13,206 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-04 16:33:13,207 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-04 16:33:13,207 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-09-04 16:33:13,207 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-04 16:33:13,207 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_long [2020-09-04 16:33:13,207 INFO L130 BoogieDeclarations]: Found specification of procedure ssl3_connect [2020-09-04 16:33:13,208 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-04 16:33:13,208 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-04 16:33:13,208 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-04 16:33:13,446 WARN L779 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-09-04 16:33:14,091 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##85: assume !false; [2020-09-04 16:33:14,091 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##84: assume false; [2020-09-04 16:33:14,119 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-04 16:33:14,119 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-04 16:33:14,128 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.09 04:33:14 BoogieIcfgContainer [2020-09-04 16:33:14,128 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-04 16:33:14,130 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-04 16:33:14,130 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-04 16:33:14,135 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-04 16:33:14,135 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 04.09 04:33:12" (1/3) ... [2020-09-04 16:33:14,136 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@582d4a7a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.09 04:33:14, skipping insertion in model container [2020-09-04 16:33:14,136 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 04:33:13" (2/3) ... [2020-09-04 16:33:14,137 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@582d4a7a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.09 04:33:14, skipping insertion in model container [2020-09-04 16:33:14,137 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.09 04:33:14" (3/3) ... [2020-09-04 16:33:14,140 INFO L109 eAbstractionObserver]: Analyzing ICFG s3_clnt_4.cil-2.c [2020-09-04 16:33:14,153 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-04 16:33:14,165 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-04 16:33:14,190 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-04 16:33:14,222 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-04 16:33:14,223 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-04 16:33:14,223 INFO L377 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2020-09-04 16:33:14,223 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-04 16:33:14,223 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-04 16:33:14,224 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-04 16:33:14,224 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-04 16:33:14,224 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-04 16:33:14,251 INFO L276 IsEmpty]: Start isEmpty. Operand 391 states. [2020-09-04 16:33:14,277 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2020-09-04 16:33:14,277 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 16:33:14,279 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 16:33:14,280 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 16:33:14,288 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 16:33:14,288 INFO L82 PathProgramCache]: Analyzing trace with hash 1739904560, now seen corresponding path program 1 times [2020-09-04 16:33:14,302 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 16:33:14,302 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [868195444] [2020-09-04 16:33:14,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 16:33:14,397 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 16:33:14,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:33:14,865 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 16:33:14,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:33:14,943 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 16:33:14,946 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [868195444] [2020-09-04 16:33:14,949 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 16:33:14,950 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-04 16:33:14,950 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1761733262] [2020-09-04 16:33:14,958 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-04 16:33:14,959 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 16:33:14,978 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-04 16:33:14,979 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-09-04 16:33:14,982 INFO L87 Difference]: Start difference. First operand 391 states. Second operand 6 states. [2020-09-04 16:33:15,523 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 16:33:15,524 INFO L93 Difference]: Finished difference Result 695 states and 910 transitions. [2020-09-04 16:33:15,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-04 16:33:15,527 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 167 [2020-09-04 16:33:15,528 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 16:33:15,549 INFO L225 Difference]: With dead ends: 695 [2020-09-04 16:33:15,549 INFO L226 Difference]: Without dead ends: 370 [2020-09-04 16:33:15,557 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 [2020-09-04 16:33:15,579 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 370 states. [2020-09-04 16:33:15,654 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 370 to 355. [2020-09-04 16:33:15,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 355 states. [2020-09-04 16:33:15,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 355 states to 355 states and 414 transitions. [2020-09-04 16:33:15,661 INFO L78 Accepts]: Start accepts. Automaton has 355 states and 414 transitions. Word has length 167 [2020-09-04 16:33:15,662 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 16:33:15,663 INFO L479 AbstractCegarLoop]: Abstraction has 355 states and 414 transitions. [2020-09-04 16:33:15,663 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-04 16:33:15,663 INFO L276 IsEmpty]: Start isEmpty. Operand 355 states and 414 transitions. [2020-09-04 16:33:15,668 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 187 [2020-09-04 16:33:15,668 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 16:33:15,669 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 16:33:15,669 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-04 16:33:15,669 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 16:33:15,670 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 16:33:15,670 INFO L82 PathProgramCache]: Analyzing trace with hash 507328089, now seen corresponding path program 1 times [2020-09-04 16:33:15,670 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 16:33:15,671 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1696730054] [2020-09-04 16:33:15,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 16:33:15,710 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 16:33:15,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:33:15,931 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 16:33:15,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:33:15,981 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 16:33:15,983 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1696730054] [2020-09-04 16:33:15,983 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 16:33:15,984 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-04 16:33:15,984 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1234716797] [2020-09-04 16:33:15,987 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-04 16:33:15,987 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 16:33:15,988 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-04 16:33:15,988 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-09-04 16:33:15,988 INFO L87 Difference]: Start difference. First operand 355 states and 414 transitions. Second operand 6 states. [2020-09-04 16:33:16,416 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 16:33:16,417 INFO L93 Difference]: Finished difference Result 616 states and 766 transitions. [2020-09-04 16:33:16,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-04 16:33:16,422 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 186 [2020-09-04 16:33:16,423 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 16:33:16,432 INFO L225 Difference]: With dead ends: 616 [2020-09-04 16:33:16,433 INFO L226 Difference]: Without dead ends: 413 [2020-09-04 16:33:16,444 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 [2020-09-04 16:33:16,446 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 413 states. [2020-09-04 16:33:16,514 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 413 to 368. [2020-09-04 16:33:16,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 368 states. [2020-09-04 16:33:16,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 368 states to 368 states and 432 transitions. [2020-09-04 16:33:16,520 INFO L78 Accepts]: Start accepts. Automaton has 368 states and 432 transitions. Word has length 186 [2020-09-04 16:33:16,522 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 16:33:16,522 INFO L479 AbstractCegarLoop]: Abstraction has 368 states and 432 transitions. [2020-09-04 16:33:16,523 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-04 16:33:16,523 INFO L276 IsEmpty]: Start isEmpty. Operand 368 states and 432 transitions. [2020-09-04 16:33:16,530 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2020-09-04 16:33:16,530 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 16:33:16,531 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] [2020-09-04 16:33:16,532 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-04 16:33:16,532 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 16:33:16,533 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 16:33:16,534 INFO L82 PathProgramCache]: Analyzing trace with hash -5837123, now seen corresponding path program 1 times [2020-09-04 16:33:16,534 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 16:33:16,535 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1571927312] [2020-09-04 16:33:16,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 16:33:16,571 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 16:33:16,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:33:16,741 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 16:33:16,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:33:16,771 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 16:33:16,771 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1571927312] [2020-09-04 16:33:16,772 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 16:33:16,772 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-04 16:33:16,772 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [298210287] [2020-09-04 16:33:16,773 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-04 16:33:16,773 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 16:33:16,774 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-04 16:33:16,774 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-04 16:33:16,774 INFO L87 Difference]: Start difference. First operand 368 states and 432 transitions. Second operand 3 states. [2020-09-04 16:33:16,969 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 16:33:16,970 INFO L93 Difference]: Finished difference Result 612 states and 746 transitions. [2020-09-04 16:33:16,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-04 16:33:16,971 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 190 [2020-09-04 16:33:16,972 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 16:33:16,976 INFO L225 Difference]: With dead ends: 612 [2020-09-04 16:33:16,976 INFO L226 Difference]: Without dead ends: 396 [2020-09-04 16:33:16,978 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 [2020-09-04 16:33:16,979 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 396 states. [2020-09-04 16:33:17,025 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 396 to 386. [2020-09-04 16:33:17,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 386 states. [2020-09-04 16:33:17,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 386 states to 386 states and 455 transitions. [2020-09-04 16:33:17,029 INFO L78 Accepts]: Start accepts. Automaton has 386 states and 455 transitions. Word has length 190 [2020-09-04 16:33:17,030 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 16:33:17,030 INFO L479 AbstractCegarLoop]: Abstraction has 386 states and 455 transitions. [2020-09-04 16:33:17,030 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-04 16:33:17,031 INFO L276 IsEmpty]: Start isEmpty. Operand 386 states and 455 transitions. [2020-09-04 16:33:17,036 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 198 [2020-09-04 16:33:17,036 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 16:33:17,036 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 16:33:17,037 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-04 16:33:17,037 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 16:33:17,037 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 16:33:17,038 INFO L82 PathProgramCache]: Analyzing trace with hash 491551320, now seen corresponding path program 1 times [2020-09-04 16:33:17,038 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 16:33:17,038 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1647336355] [2020-09-04 16:33:17,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 16:33:17,051 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 16:33:17,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:33:17,145 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 16:33:17,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:33:17,234 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 16:33:17,235 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1647336355] [2020-09-04 16:33:17,235 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 16:33:17,235 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-04 16:33:17,236 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1101656623] [2020-09-04 16:33:17,236 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-04 16:33:17,237 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 16:33:17,237 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-04 16:33:17,237 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-04 16:33:17,238 INFO L87 Difference]: Start difference. First operand 386 states and 455 transitions. Second operand 3 states. [2020-09-04 16:33:17,388 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 16:33:17,389 INFO L93 Difference]: Finished difference Result 847 states and 1047 transitions. [2020-09-04 16:33:17,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-04 16:33:17,390 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 197 [2020-09-04 16:33:17,391 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 16:33:17,395 INFO L225 Difference]: With dead ends: 847 [2020-09-04 16:33:17,396 INFO L226 Difference]: Without dead ends: 613 [2020-09-04 16:33:17,398 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 [2020-09-04 16:33:17,399 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 613 states. [2020-09-04 16:33:17,481 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 613 to 613. [2020-09-04 16:33:17,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 613 states. [2020-09-04 16:33:17,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 613 states to 613 states and 743 transitions. [2020-09-04 16:33:17,488 INFO L78 Accepts]: Start accepts. Automaton has 613 states and 743 transitions. Word has length 197 [2020-09-04 16:33:17,489 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 16:33:17,489 INFO L479 AbstractCegarLoop]: Abstraction has 613 states and 743 transitions. [2020-09-04 16:33:17,489 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-04 16:33:17,489 INFO L276 IsEmpty]: Start isEmpty. Operand 613 states and 743 transitions. [2020-09-04 16:33:17,495 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 211 [2020-09-04 16:33:17,496 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 16:33:17,496 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] [2020-09-04 16:33:17,497 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-04 16:33:17,497 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 16:33:17,497 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 16:33:17,498 INFO L82 PathProgramCache]: Analyzing trace with hash -525577979, now seen corresponding path program 1 times [2020-09-04 16:33:17,498 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 16:33:17,499 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [528442907] [2020-09-04 16:33:17,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 16:33:17,510 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 16:33:17,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:33:17,602 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 16:33:17,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:33:17,668 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 16:33:17,668 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [528442907] [2020-09-04 16:33:17,669 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 16:33:17,669 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-04 16:33:17,670 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [379089427] [2020-09-04 16:33:17,671 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-04 16:33:17,671 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 16:33:17,672 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-04 16:33:17,672 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-04 16:33:17,672 INFO L87 Difference]: Start difference. First operand 613 states and 743 transitions. Second operand 3 states. [2020-09-04 16:33:17,954 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 16:33:17,955 INFO L93 Difference]: Finished difference Result 1135 states and 1416 transitions. [2020-09-04 16:33:17,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-04 16:33:17,956 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 210 [2020-09-04 16:33:17,956 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 16:33:17,960 INFO L225 Difference]: With dead ends: 1135 [2020-09-04 16:33:17,961 INFO L226 Difference]: Without dead ends: 674 [2020-09-04 16:33:17,963 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 [2020-09-04 16:33:17,964 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 674 states. [2020-09-04 16:33:18,031 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 674 to 653. [2020-09-04 16:33:18,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 653 states. [2020-09-04 16:33:18,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 653 states to 653 states and 793 transitions. [2020-09-04 16:33:18,036 INFO L78 Accepts]: Start accepts. Automaton has 653 states and 793 transitions. Word has length 210 [2020-09-04 16:33:18,036 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 16:33:18,036 INFO L479 AbstractCegarLoop]: Abstraction has 653 states and 793 transitions. [2020-09-04 16:33:18,036 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-04 16:33:18,037 INFO L276 IsEmpty]: Start isEmpty. Operand 653 states and 793 transitions. [2020-09-04 16:33:18,040 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 218 [2020-09-04 16:33:18,040 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 16:33:18,041 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 16:33:18,041 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-04 16:33:18,041 INFO L427 AbstractCegarLoop]: === Iteration 6 === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 16:33:18,042 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 16:33:18,042 INFO L82 PathProgramCache]: Analyzing trace with hash 1730770704, now seen corresponding path program 1 times [2020-09-04 16:33:18,042 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 16:33:18,043 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [990099329] [2020-09-04 16:33:18,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 16:33:18,051 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 16:33:18,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:33:18,136 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 16:33:18,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:33:18,190 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 16:33:18,191 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [990099329] [2020-09-04 16:33:18,191 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 16:33:18,191 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-04 16:33:18,191 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [530492031] [2020-09-04 16:33:18,192 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-04 16:33:18,193 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 16:33:18,193 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-04 16:33:18,193 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-04 16:33:18,193 INFO L87 Difference]: Start difference. First operand 653 states and 793 transitions. Second operand 3 states. [2020-09-04 16:33:18,381 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 16:33:18,381 INFO L93 Difference]: Finished difference Result 1585 states and 1965 transitions. [2020-09-04 16:33:18,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-04 16:33:18,382 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 217 [2020-09-04 16:33:18,383 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 16:33:18,389 INFO L225 Difference]: With dead ends: 1585 [2020-09-04 16:33:18,389 INFO L226 Difference]: Without dead ends: 1084 [2020-09-04 16:33:18,391 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 [2020-09-04 16:33:18,393 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1084 states. [2020-09-04 16:33:18,511 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1084 to 1082. [2020-09-04 16:33:18,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1082 states. [2020-09-04 16:33:18,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1082 states to 1082 states and 1319 transitions. [2020-09-04 16:33:18,517 INFO L78 Accepts]: Start accepts. Automaton has 1082 states and 1319 transitions. Word has length 217 [2020-09-04 16:33:18,518 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 16:33:18,518 INFO L479 AbstractCegarLoop]: Abstraction has 1082 states and 1319 transitions. [2020-09-04 16:33:18,518 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-04 16:33:18,519 INFO L276 IsEmpty]: Start isEmpty. Operand 1082 states and 1319 transitions. [2020-09-04 16:33:18,523 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 219 [2020-09-04 16:33:18,523 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 16:33:18,524 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 16:33:18,524 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-04 16:33:18,524 INFO L427 AbstractCegarLoop]: === Iteration 7 === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 16:33:18,524 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 16:33:18,525 INFO L82 PathProgramCache]: Analyzing trace with hash 1258952316, now seen corresponding path program 1 times [2020-09-04 16:33:18,525 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 16:33:18,525 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1639091554] [2020-09-04 16:33:18,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 16:33:18,534 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 16:33:18,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:33:18,619 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 16:33:18,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:33:18,651 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 16:33:18,652 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1639091554] [2020-09-04 16:33:18,653 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 16:33:18,653 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-04 16:33:18,653 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2037545190] [2020-09-04 16:33:18,654 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-04 16:33:18,654 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 16:33:18,654 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-04 16:33:18,655 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-04 16:33:18,656 INFO L87 Difference]: Start difference. First operand 1082 states and 1319 transitions. Second operand 3 states. [2020-09-04 16:33:18,893 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 16:33:18,894 INFO L93 Difference]: Finished difference Result 2030 states and 2504 transitions. [2020-09-04 16:33:18,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-04 16:33:18,895 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 218 [2020-09-04 16:33:18,896 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 16:33:18,905 INFO L225 Difference]: With dead ends: 2030 [2020-09-04 16:33:18,905 INFO L226 Difference]: Without dead ends: 1100 [2020-09-04 16:33:18,910 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 [2020-09-04 16:33:18,913 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1100 states. [2020-09-04 16:33:19,183 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1100 to 1090. [2020-09-04 16:33:19,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1090 states. [2020-09-04 16:33:19,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1090 states to 1090 states and 1323 transitions. [2020-09-04 16:33:19,193 INFO L78 Accepts]: Start accepts. Automaton has 1090 states and 1323 transitions. Word has length 218 [2020-09-04 16:33:19,193 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 16:33:19,194 INFO L479 AbstractCegarLoop]: Abstraction has 1090 states and 1323 transitions. [2020-09-04 16:33:19,194 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-04 16:33:19,194 INFO L276 IsEmpty]: Start isEmpty. Operand 1090 states and 1323 transitions. [2020-09-04 16:33:19,202 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 221 [2020-09-04 16:33:19,202 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 16:33:19,203 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 16:33:19,203 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-04 16:33:19,204 INFO L427 AbstractCegarLoop]: === Iteration 8 === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 16:33:19,204 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 16:33:19,205 INFO L82 PathProgramCache]: Analyzing trace with hash -1830962644, now seen corresponding path program 1 times [2020-09-04 16:33:19,205 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 16:33:19,206 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1481475677] [2020-09-04 16:33:19,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 16:33:19,215 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 16:33:19,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:33:19,330 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 16:33:19,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:33:19,383 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 16:33:19,383 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1481475677] [2020-09-04 16:33:19,384 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 16:33:19,384 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-04 16:33:19,384 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1538969273] [2020-09-04 16:33:19,385 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-04 16:33:19,385 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 16:33:19,385 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-04 16:33:19,386 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-04 16:33:19,386 INFO L87 Difference]: Start difference. First operand 1090 states and 1323 transitions. Second operand 3 states. [2020-09-04 16:33:19,797 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 16:33:19,798 INFO L93 Difference]: Finished difference Result 2952 states and 3635 transitions. [2020-09-04 16:33:19,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-04 16:33:19,799 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 220 [2020-09-04 16:33:19,800 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 16:33:19,816 INFO L225 Difference]: With dead ends: 2952 [2020-09-04 16:33:19,816 INFO L226 Difference]: Without dead ends: 2014 [2020-09-04 16:33:19,822 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 [2020-09-04 16:33:19,827 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2014 states. [2020-09-04 16:33:20,240 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2014 to 2012. [2020-09-04 16:33:20,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2012 states. [2020-09-04 16:33:20,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2012 states to 2012 states and 2455 transitions. [2020-09-04 16:33:20,256 INFO L78 Accepts]: Start accepts. Automaton has 2012 states and 2455 transitions. Word has length 220 [2020-09-04 16:33:20,257 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 16:33:20,257 INFO L479 AbstractCegarLoop]: Abstraction has 2012 states and 2455 transitions. [2020-09-04 16:33:20,258 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-04 16:33:20,258 INFO L276 IsEmpty]: Start isEmpty. Operand 2012 states and 2455 transitions. [2020-09-04 16:33:20,267 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 221 [2020-09-04 16:33:20,267 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 16:33:20,268 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 16:33:20,268 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-04 16:33:20,269 INFO L427 AbstractCegarLoop]: === Iteration 9 === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 16:33:20,269 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 16:33:20,269 INFO L82 PathProgramCache]: Analyzing trace with hash 777824814, now seen corresponding path program 1 times [2020-09-04 16:33:20,270 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 16:33:20,271 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [620051936] [2020-09-04 16:33:20,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 16:33:20,286 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 16:33:20,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:33:20,368 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 16:33:20,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:33:20,418 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 16:33:20,419 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [620051936] [2020-09-04 16:33:20,419 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 16:33:20,419 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-04 16:33:20,424 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [237114330] [2020-09-04 16:33:20,425 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-04 16:33:20,425 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 16:33:20,425 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-04 16:33:20,426 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-04 16:33:20,426 INFO L87 Difference]: Start difference. First operand 2012 states and 2455 transitions. Second operand 3 states. [2020-09-04 16:33:20,763 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 16:33:20,763 INFO L93 Difference]: Finished difference Result 2967 states and 3629 transitions. [2020-09-04 16:33:20,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-04 16:33:20,764 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 220 [2020-09-04 16:33:20,767 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 16:33:20,781 INFO L225 Difference]: With dead ends: 2967 [2020-09-04 16:33:20,781 INFO L226 Difference]: Without dead ends: 2029 [2020-09-04 16:33:20,787 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 [2020-09-04 16:33:20,792 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2029 states. [2020-09-04 16:33:21,145 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2029 to 2027. [2020-09-04 16:33:21,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2027 states. [2020-09-04 16:33:21,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2027 states to 2027 states and 2461 transitions. [2020-09-04 16:33:21,160 INFO L78 Accepts]: Start accepts. Automaton has 2027 states and 2461 transitions. Word has length 220 [2020-09-04 16:33:21,161 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 16:33:21,161 INFO L479 AbstractCegarLoop]: Abstraction has 2027 states and 2461 transitions. [2020-09-04 16:33:21,164 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-04 16:33:21,165 INFO L276 IsEmpty]: Start isEmpty. Operand 2027 states and 2461 transitions. [2020-09-04 16:33:21,170 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 222 [2020-09-04 16:33:21,171 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 16:33:21,171 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 16:33:21,172 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-04 16:33:21,172 INFO L427 AbstractCegarLoop]: === Iteration 10 === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 16:33:21,172 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 16:33:21,173 INFO L82 PathProgramCache]: Analyzing trace with hash -939173952, now seen corresponding path program 1 times [2020-09-04 16:33:21,173 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 16:33:21,173 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [660780136] [2020-09-04 16:33:21,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 16:33:21,182 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 16:33:21,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:33:21,264 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 16:33:21,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:33:21,298 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 16:33:21,299 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [660780136] [2020-09-04 16:33:21,300 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 16:33:21,300 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-04 16:33:21,300 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1024005200] [2020-09-04 16:33:21,301 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-04 16:33:21,301 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 16:33:21,301 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-04 16:33:21,301 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-04 16:33:21,302 INFO L87 Difference]: Start difference. First operand 2027 states and 2461 transitions. Second operand 3 states. [2020-09-04 16:33:21,744 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 16:33:21,744 INFO L93 Difference]: Finished difference Result 3887 states and 4768 transitions. [2020-09-04 16:33:21,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-04 16:33:21,745 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 221 [2020-09-04 16:33:21,746 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 16:33:21,763 INFO L225 Difference]: With dead ends: 3887 [2020-09-04 16:33:21,764 INFO L226 Difference]: Without dead ends: 2946 [2020-09-04 16:33:21,769 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 [2020-09-04 16:33:21,775 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2946 states. [2020-09-04 16:33:22,115 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2946 to 2946. [2020-09-04 16:33:22,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2946 states. [2020-09-04 16:33:22,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2946 states to 2946 states and 3588 transitions. [2020-09-04 16:33:22,130 INFO L78 Accepts]: Start accepts. Automaton has 2946 states and 3588 transitions. Word has length 221 [2020-09-04 16:33:22,130 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 16:33:22,130 INFO L479 AbstractCegarLoop]: Abstraction has 2946 states and 3588 transitions. [2020-09-04 16:33:22,131 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-04 16:33:22,131 INFO L276 IsEmpty]: Start isEmpty. Operand 2946 states and 3588 transitions. [2020-09-04 16:33:22,137 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 232 [2020-09-04 16:33:22,138 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 16:33:22,138 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 16:33:22,138 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-09-04 16:33:22,138 INFO L427 AbstractCegarLoop]: === Iteration 11 === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 16:33:22,139 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 16:33:22,139 INFO L82 PathProgramCache]: Analyzing trace with hash -1852648600, now seen corresponding path program 1 times [2020-09-04 16:33:22,139 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 16:33:22,139 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [33351280] [2020-09-04 16:33:22,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 16:33:22,146 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 16:33:22,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:33:22,217 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 16:33:22,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:33:22,249 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 16:33:22,250 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [33351280] [2020-09-04 16:33:22,250 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 16:33:22,250 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-04 16:33:22,251 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1546823723] [2020-09-04 16:33:22,251 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-04 16:33:22,251 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 16:33:22,252 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-04 16:33:22,252 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-04 16:33:22,252 INFO L87 Difference]: Start difference. First operand 2946 states and 3588 transitions. Second operand 3 states. [2020-09-04 16:33:22,850 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 16:33:22,851 INFO L93 Difference]: Finished difference Result 6400 states and 8052 transitions. [2020-09-04 16:33:22,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-04 16:33:22,852 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 231 [2020-09-04 16:33:22,853 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 16:33:22,875 INFO L225 Difference]: With dead ends: 6400 [2020-09-04 16:33:22,875 INFO L226 Difference]: Without dead ends: 3609 [2020-09-04 16:33:22,885 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 [2020-09-04 16:33:22,892 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3609 states. [2020-09-04 16:33:23,179 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3609 to 3423. [2020-09-04 16:33:23,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3423 states. [2020-09-04 16:33:23,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3423 states to 3423 states and 4104 transitions. [2020-09-04 16:33:23,192 INFO L78 Accepts]: Start accepts. Automaton has 3423 states and 4104 transitions. Word has length 231 [2020-09-04 16:33:23,193 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 16:33:23,193 INFO L479 AbstractCegarLoop]: Abstraction has 3423 states and 4104 transitions. [2020-09-04 16:33:23,193 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-04 16:33:23,193 INFO L276 IsEmpty]: Start isEmpty. Operand 3423 states and 4104 transitions. [2020-09-04 16:33:23,201 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 232 [2020-09-04 16:33:23,201 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 16:33:23,202 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 16:33:23,202 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-09-04 16:33:23,202 INFO L427 AbstractCegarLoop]: === Iteration 12 === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 16:33:23,203 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 16:33:23,203 INFO L82 PathProgramCache]: Analyzing trace with hash 598717384, now seen corresponding path program 1 times [2020-09-04 16:33:23,203 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 16:33:23,203 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [284537157] [2020-09-04 16:33:23,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 16:33:23,214 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 16:33:23,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:33:23,278 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 16:33:23,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:33:23,313 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 16:33:23,313 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [284537157] [2020-09-04 16:33:23,314 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 16:33:23,314 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-04 16:33:23,314 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1035937100] [2020-09-04 16:33:23,315 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-04 16:33:23,315 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 16:33:23,315 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-04 16:33:23,316 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-04 16:33:23,316 INFO L87 Difference]: Start difference. First operand 3423 states and 4104 transitions. Second operand 3 states. [2020-09-04 16:33:23,895 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 16:33:23,896 INFO L93 Difference]: Finished difference Result 7032 states and 8518 transitions. [2020-09-04 16:33:23,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-04 16:33:23,897 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 231 [2020-09-04 16:33:23,898 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 16:33:23,922 INFO L225 Difference]: With dead ends: 7032 [2020-09-04 16:33:23,923 INFO L226 Difference]: Without dead ends: 3776 [2020-09-04 16:33:23,935 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 [2020-09-04 16:33:23,941 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3776 states. [2020-09-04 16:33:24,235 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3776 to 3636. [2020-09-04 16:33:24,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3636 states. [2020-09-04 16:33:24,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3636 states to 3636 states and 4332 transitions. [2020-09-04 16:33:24,250 INFO L78 Accepts]: Start accepts. Automaton has 3636 states and 4332 transitions. Word has length 231 [2020-09-04 16:33:24,250 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 16:33:24,251 INFO L479 AbstractCegarLoop]: Abstraction has 3636 states and 4332 transitions. [2020-09-04 16:33:24,251 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-04 16:33:24,251 INFO L276 IsEmpty]: Start isEmpty. Operand 3636 states and 4332 transitions. [2020-09-04 16:33:24,265 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 247 [2020-09-04 16:33:24,265 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 16:33:24,265 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 16:33:24,266 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-09-04 16:33:24,266 INFO L427 AbstractCegarLoop]: === Iteration 13 === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 16:33:24,266 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 16:33:24,267 INFO L82 PathProgramCache]: Analyzing trace with hash -320985619, now seen corresponding path program 1 times [2020-09-04 16:33:24,267 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 16:33:24,268 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2008403613] [2020-09-04 16:33:24,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 16:33:24,277 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 16:33:24,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:33:24,369 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 16:33:24,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:33:24,439 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 16:33:24,440 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2008403613] [2020-09-04 16:33:24,441 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 16:33:24,441 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-04 16:33:24,441 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [388178616] [2020-09-04 16:33:24,442 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-04 16:33:24,442 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 16:33:24,442 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-04 16:33:24,442 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-04 16:33:24,443 INFO L87 Difference]: Start difference. First operand 3636 states and 4332 transitions. Second operand 3 states. [2020-09-04 16:33:25,115 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 16:33:25,116 INFO L93 Difference]: Finished difference Result 7105 states and 8510 transitions. [2020-09-04 16:33:25,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-04 16:33:25,117 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 246 [2020-09-04 16:33:25,117 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 16:33:25,142 INFO L225 Difference]: With dead ends: 7105 [2020-09-04 16:33:25,142 INFO L226 Difference]: Without dead ends: 4785 [2020-09-04 16:33:25,151 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 [2020-09-04 16:33:25,161 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4785 states. [2020-09-04 16:33:25,590 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4785 to 4785. [2020-09-04 16:33:25,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4785 states. [2020-09-04 16:33:25,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4785 states to 4785 states and 5711 transitions. [2020-09-04 16:33:25,610 INFO L78 Accepts]: Start accepts. Automaton has 4785 states and 5711 transitions. Word has length 246 [2020-09-04 16:33:25,610 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 16:33:25,611 INFO L479 AbstractCegarLoop]: Abstraction has 4785 states and 5711 transitions. [2020-09-04 16:33:25,611 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-04 16:33:25,611 INFO L276 IsEmpty]: Start isEmpty. Operand 4785 states and 5711 transitions. [2020-09-04 16:33:25,623 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 256 [2020-09-04 16:33:25,624 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 16:33:25,624 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 16:33:25,624 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-09-04 16:33:25,625 INFO L427 AbstractCegarLoop]: === Iteration 14 === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 16:33:25,625 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 16:33:25,625 INFO L82 PathProgramCache]: Analyzing trace with hash -2112197708, now seen corresponding path program 1 times [2020-09-04 16:33:25,625 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 16:33:25,626 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [772356264] [2020-09-04 16:33:25,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 16:33:25,636 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 16:33:25,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:33:25,715 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 16:33:25,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:33:25,756 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 16:33:25,757 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [772356264] [2020-09-04 16:33:25,757 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 16:33:25,757 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-04 16:33:25,758 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1301916583] [2020-09-04 16:33:25,758 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-04 16:33:25,758 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 16:33:25,759 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-04 16:33:25,759 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-04 16:33:25,759 INFO L87 Difference]: Start difference. First operand 4785 states and 5711 transitions. Second operand 3 states. [2020-09-04 16:33:26,356 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 16:33:26,356 INFO L93 Difference]: Finished difference Result 9827 states and 11856 transitions. [2020-09-04 16:33:26,357 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-04 16:33:26,357 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 255 [2020-09-04 16:33:26,358 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 16:33:26,388 INFO L225 Difference]: With dead ends: 9827 [2020-09-04 16:33:26,389 INFO L226 Difference]: Without dead ends: 5209 [2020-09-04 16:33:26,406 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 [2020-09-04 16:33:26,416 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5209 states. [2020-09-04 16:33:26,874 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5209 to 5101. [2020-09-04 16:33:26,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5101 states. [2020-09-04 16:33:26,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5101 states to 5101 states and 6047 transitions. [2020-09-04 16:33:26,902 INFO L78 Accepts]: Start accepts. Automaton has 5101 states and 6047 transitions. Word has length 255 [2020-09-04 16:33:26,903 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 16:33:26,903 INFO L479 AbstractCegarLoop]: Abstraction has 5101 states and 6047 transitions. [2020-09-04 16:33:26,903 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-04 16:33:26,903 INFO L276 IsEmpty]: Start isEmpty. Operand 5101 states and 6047 transitions. [2020-09-04 16:33:26,925 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 275 [2020-09-04 16:33:26,926 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 16:33:26,926 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, 1, 1, 1, 1, 1, 1] [2020-09-04 16:33:26,927 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-09-04 16:33:26,927 INFO L427 AbstractCegarLoop]: === Iteration 15 === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 16:33:26,927 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 16:33:26,928 INFO L82 PathProgramCache]: Analyzing trace with hash -1182669231, now seen corresponding path program 1 times [2020-09-04 16:33:26,928 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 16:33:26,929 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [449504633] [2020-09-04 16:33:26,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 16:33:26,938 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 16:33:26,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:33:27,036 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 16:33:27,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:33:27,113 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 16:33:27,114 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [449504633] [2020-09-04 16:33:27,114 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 16:33:27,115 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-04 16:33:27,115 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [648989449] [2020-09-04 16:33:27,116 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-04 16:33:27,116 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 16:33:27,117 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-04 16:33:27,117 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-04 16:33:27,117 INFO L87 Difference]: Start difference. First operand 5101 states and 6047 transitions. Second operand 5 states. [2020-09-04 16:33:28,207 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 16:33:28,208 INFO L93 Difference]: Finished difference Result 12439 states and 15060 transitions. [2020-09-04 16:33:28,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-04 16:33:28,209 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 274 [2020-09-04 16:33:28,210 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 16:33:28,249 INFO L225 Difference]: With dead ends: 12439 [2020-09-04 16:33:28,249 INFO L226 Difference]: Without dead ends: 7505 [2020-09-04 16:33:28,271 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 [2020-09-04 16:33:28,288 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7505 states. [2020-09-04 16:33:28,945 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7505 to 5858. [2020-09-04 16:33:28,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5858 states. [2020-09-04 16:33:28,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5858 states to 5858 states and 6931 transitions. [2020-09-04 16:33:28,974 INFO L78 Accepts]: Start accepts. Automaton has 5858 states and 6931 transitions. Word has length 274 [2020-09-04 16:33:28,974 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 16:33:28,975 INFO L479 AbstractCegarLoop]: Abstraction has 5858 states and 6931 transitions. [2020-09-04 16:33:28,975 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-04 16:33:28,975 INFO L276 IsEmpty]: Start isEmpty. Operand 5858 states and 6931 transitions. [2020-09-04 16:33:28,998 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 278 [2020-09-04 16:33:28,998 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 16:33:28,999 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, 1, 1, 1, 1, 1, 1] [2020-09-04 16:33:28,999 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-09-04 16:33:29,000 INFO L427 AbstractCegarLoop]: === Iteration 16 === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 16:33:29,000 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 16:33:29,001 INFO L82 PathProgramCache]: Analyzing trace with hash 178559340, now seen corresponding path program 2 times [2020-09-04 16:33:29,002 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 16:33:29,002 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1774497365] [2020-09-04 16:33:29,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 16:33:29,017 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 16:33:29,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:33:29,115 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 16:33:29,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:33:29,238 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 16:33:29,239 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1774497365] [2020-09-04 16:33:29,240 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 16:33:29,240 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-04 16:33:29,240 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [353379607] [2020-09-04 16:33:29,241 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-04 16:33:29,242 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 16:33:29,242 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-04 16:33:29,242 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-04 16:33:29,243 INFO L87 Difference]: Start difference. First operand 5858 states and 6931 transitions. Second operand 5 states. [2020-09-04 16:33:30,259 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 16:33:30,259 INFO L93 Difference]: Finished difference Result 9951 states and 11714 transitions. [2020-09-04 16:33:30,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-04 16:33:30,260 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 277 [2020-09-04 16:33:30,261 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 16:33:30,289 INFO L225 Difference]: With dead ends: 9951 [2020-09-04 16:33:30,290 INFO L226 Difference]: Without dead ends: 7022 [2020-09-04 16:33:30,306 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 [2020-09-04 16:33:30,320 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7022 states. [2020-09-04 16:33:31,003 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7022 to 5858. [2020-09-04 16:33:31,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5858 states. [2020-09-04 16:33:31,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5858 states to 5858 states and 6931 transitions. [2020-09-04 16:33:31,019 INFO L78 Accepts]: Start accepts. Automaton has 5858 states and 6931 transitions. Word has length 277 [2020-09-04 16:33:31,019 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 16:33:31,020 INFO L479 AbstractCegarLoop]: Abstraction has 5858 states and 6931 transitions. [2020-09-04 16:33:31,020 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-04 16:33:31,020 INFO L276 IsEmpty]: Start isEmpty. Operand 5858 states and 6931 transitions. [2020-09-04 16:33:31,034 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 278 [2020-09-04 16:33:31,035 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 16:33:31,035 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, 1, 1, 1, 1, 1, 1] [2020-09-04 16:33:31,036 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-09-04 16:33:31,036 INFO L427 AbstractCegarLoop]: === Iteration 17 === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 16:33:31,036 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 16:33:31,036 INFO L82 PathProgramCache]: Analyzing trace with hash -1946922308, now seen corresponding path program 1 times [2020-09-04 16:33:31,037 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 16:33:31,037 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [857756293] [2020-09-04 16:33:31,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 16:33:31,044 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 16:33:31,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:33:31,124 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 16:33:31,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:33:31,171 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 16:33:31,172 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [857756293] [2020-09-04 16:33:31,172 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 16:33:31,172 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-04 16:33:31,173 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [216783438] [2020-09-04 16:33:31,173 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-04 16:33:31,174 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 16:33:31,174 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-04 16:33:31,174 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-04 16:33:31,174 INFO L87 Difference]: Start difference. First operand 5858 states and 6931 transitions. Second operand 4 states. [2020-09-04 16:33:32,350 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 16:33:32,350 INFO L93 Difference]: Finished difference Result 12288 states and 14641 transitions. [2020-09-04 16:33:32,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-04 16:33:32,351 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 277 [2020-09-04 16:33:32,351 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 16:33:32,371 INFO L225 Difference]: With dead ends: 12288 [2020-09-04 16:33:32,371 INFO L226 Difference]: Without dead ends: 9355 [2020-09-04 16:33:32,380 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 [2020-09-04 16:33:32,391 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9355 states. [2020-09-04 16:33:32,913 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9355 to 5930. [2020-09-04 16:33:32,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5930 states. [2020-09-04 16:33:32,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5930 states to 5930 states and 7019 transitions. [2020-09-04 16:33:32,926 INFO L78 Accepts]: Start accepts. Automaton has 5930 states and 7019 transitions. Word has length 277 [2020-09-04 16:33:32,926 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 16:33:32,927 INFO L479 AbstractCegarLoop]: Abstraction has 5930 states and 7019 transitions. [2020-09-04 16:33:32,927 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-04 16:33:32,927 INFO L276 IsEmpty]: Start isEmpty. Operand 5930 states and 7019 transitions. [2020-09-04 16:33:32,938 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 278 [2020-09-04 16:33:32,938 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 16:33:32,939 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, 1, 1, 1, 1, 1, 1] [2020-09-04 16:33:32,939 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-09-04 16:33:32,939 INFO L427 AbstractCegarLoop]: === Iteration 18 === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 16:33:32,939 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 16:33:32,940 INFO L82 PathProgramCache]: Analyzing trace with hash -507122916, now seen corresponding path program 3 times [2020-09-04 16:33:32,940 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 16:33:32,940 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [586282040] [2020-09-04 16:33:32,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 16:33:32,946 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 16:33:32,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:33:33,033 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 16:33:33,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:33:33,076 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 16:33:33,077 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [586282040] [2020-09-04 16:33:33,077 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 16:33:33,077 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-04 16:33:33,078 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1427738965] [2020-09-04 16:33:33,078 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-04 16:33:33,081 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 16:33:33,081 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-04 16:33:33,081 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-04 16:33:33,082 INFO L87 Difference]: Start difference. First operand 5930 states and 7019 transitions. Second operand 5 states. [2020-09-04 16:33:33,775 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 16:33:33,775 INFO L93 Difference]: Finished difference Result 9635 states and 11354 transitions. [2020-09-04 16:33:33,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-04 16:33:33,776 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 277 [2020-09-04 16:33:33,776 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 16:33:33,791 INFO L225 Difference]: With dead ends: 9635 [2020-09-04 16:33:33,791 INFO L226 Difference]: Without dead ends: 6634 [2020-09-04 16:33:33,804 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 [2020-09-04 16:33:33,820 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6634 states. [2020-09-04 16:33:34,388 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6634 to 6010. [2020-09-04 16:33:34,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6010 states. [2020-09-04 16:33:34,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6010 states to 6010 states and 7107 transitions. [2020-09-04 16:33:34,401 INFO L78 Accepts]: Start accepts. Automaton has 6010 states and 7107 transitions. Word has length 277 [2020-09-04 16:33:34,401 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 16:33:34,401 INFO L479 AbstractCegarLoop]: Abstraction has 6010 states and 7107 transitions. [2020-09-04 16:33:34,401 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-04 16:33:34,401 INFO L276 IsEmpty]: Start isEmpty. Operand 6010 states and 7107 transitions. [2020-09-04 16:33:34,413 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 280 [2020-09-04 16:33:34,413 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 16:33:34,413 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 5, 5, 4, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 16:33:34,414 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-09-04 16:33:34,414 INFO L427 AbstractCegarLoop]: === Iteration 19 === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 16:33:34,414 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 16:33:34,414 INFO L82 PathProgramCache]: Analyzing trace with hash 875870054, now seen corresponding path program 1 times [2020-09-04 16:33:34,415 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 16:33:34,415 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1409718771] [2020-09-04 16:33:34,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 16:33:34,422 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 16:33:34,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:33:34,500 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 16:33:34,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:33:34,541 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 16:33:34,542 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1409718771] [2020-09-04 16:33:34,542 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 16:33:34,542 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-04 16:33:34,543 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1514495523] [2020-09-04 16:33:34,543 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-04 16:33:34,543 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 16:33:34,544 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-04 16:33:34,544 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-04 16:33:34,544 INFO L87 Difference]: Start difference. First operand 6010 states and 7107 transitions. Second operand 3 states. [2020-09-04 16:33:35,111 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 16:33:35,112 INFO L93 Difference]: Finished difference Result 11210 states and 13290 transitions. [2020-09-04 16:33:35,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-04 16:33:35,112 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 279 [2020-09-04 16:33:35,113 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 16:33:35,127 INFO L225 Difference]: With dead ends: 11210 [2020-09-04 16:33:35,128 INFO L226 Difference]: Without dead ends: 6822 [2020-09-04 16:33:35,140 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 [2020-09-04 16:33:35,150 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6822 states. [2020-09-04 16:33:35,663 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6822 to 6822. [2020-09-04 16:33:35,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6822 states. [2020-09-04 16:33:35,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6822 states to 6822 states and 8061 transitions. [2020-09-04 16:33:35,674 INFO L78 Accepts]: Start accepts. Automaton has 6822 states and 8061 transitions. Word has length 279 [2020-09-04 16:33:35,675 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 16:33:35,675 INFO L479 AbstractCegarLoop]: Abstraction has 6822 states and 8061 transitions. [2020-09-04 16:33:35,675 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-04 16:33:35,675 INFO L276 IsEmpty]: Start isEmpty. Operand 6822 states and 8061 transitions. [2020-09-04 16:33:35,685 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 281 [2020-09-04 16:33:35,685 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 16:33:35,686 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 5, 5, 4, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 16:33:35,686 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-09-04 16:33:35,686 INFO L427 AbstractCegarLoop]: === Iteration 20 === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 16:33:35,686 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 16:33:35,687 INFO L82 PathProgramCache]: Analyzing trace with hash -802173269, now seen corresponding path program 1 times [2020-09-04 16:33:35,687 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 16:33:35,687 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [221894308] [2020-09-04 16:33:35,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 16:33:35,694 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 16:33:35,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-04 16:33:35,744 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-09-04 16:33:35,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-04 16:33:35,783 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-09-04 16:33:35,905 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-09-04 16:33:35,905 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-04 16:33:35,906 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-09-04 16:33:35,961 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 04.09 04:33:35 BoogieIcfgContainer [2020-09-04 16:33:35,961 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-04 16:33:35,965 INFO L168 Benchmark]: Toolchain (without parser) took 23629.47 ms. Allocated memory was 141.0 MB in the beginning and 1.2 GB in the end (delta: 1.1 GB). Free memory was 102.2 MB in the beginning and 709.1 MB in the end (delta: -606.9 MB). Peak memory consumption was 475.3 MB. Max. memory is 7.1 GB. [2020-09-04 16:33:35,966 INFO L168 Benchmark]: CDTParser took 0.31 ms. Allocated memory is still 141.0 MB. Free memory was 120.7 MB in the beginning and 120.5 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-09-04 16:33:35,966 INFO L168 Benchmark]: CACSL2BoogieTranslator took 708.42 ms. Allocated memory was 141.0 MB in the beginning and 204.5 MB in the end (delta: 63.4 MB). Free memory was 101.8 MB in the beginning and 181.3 MB in the end (delta: -79.4 MB). Peak memory consumption was 27.0 MB. Max. memory is 7.1 GB. [2020-09-04 16:33:35,967 INFO L168 Benchmark]: Boogie Preprocessor took 73.10 ms. Allocated memory is still 204.5 MB. Free memory was 181.3 MB in the beginning and 179.2 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. [2020-09-04 16:33:35,967 INFO L168 Benchmark]: RCFGBuilder took 1009.20 ms. Allocated memory is still 204.5 MB. Free memory was 178.6 MB in the beginning and 113.8 MB in the end (delta: 64.8 MB). Peak memory consumption was 64.8 MB. Max. memory is 7.1 GB. [2020-09-04 16:33:35,968 INFO L168 Benchmark]: TraceAbstraction took 21831.36 ms. Allocated memory was 204.5 MB in the beginning and 1.2 GB in the end (delta: 1.0 GB). Free memory was 113.8 MB in the beginning and 709.1 MB in the end (delta: -595.4 MB). Peak memory consumption was 423.3 MB. Max. memory is 7.1 GB. [2020-09-04 16:33:35,971 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.31 ms. Allocated memory is still 141.0 MB. Free memory was 120.7 MB in the beginning and 120.5 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 708.42 ms. Allocated memory was 141.0 MB in the beginning and 204.5 MB in the end (delta: 63.4 MB). Free memory was 101.8 MB in the beginning and 181.3 MB in the end (delta: -79.4 MB). Peak memory consumption was 27.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 73.10 ms. Allocated memory is still 204.5 MB. Free memory was 181.3 MB in the beginning and 179.2 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1009.20 ms. Allocated memory is still 204.5 MB. Free memory was 178.6 MB in the beginning and 113.8 MB in the end (delta: 64.8 MB). Peak memory consumption was 64.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 21831.36 ms. Allocated memory was 204.5 MB in the beginning and 1.2 GB in the end (delta: 1.0 GB). Free memory was 113.8 MB in the beginning and 709.1 MB in the end (delta: -595.4 MB). Peak memory consumption was 423.3 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 548]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L553] int s ; [L557] s = 12292 [L558] CALL ssl3_connect(s) [L11] int s__info_callback = __VERIFIER_nondet_int() ; [L12] int s__in_handshake = __VERIFIER_nondet_int() ; [L13] int s__state ; [L14] int s__new_session ; [L15] int s__server ; [L16] int s__version = __VERIFIER_nondet_int() ; [L17] int s__type ; [L18] int s__init_num ; [L19] int s__bbio = __VERIFIER_nondet_int() ; [L20] int s__wbio = __VERIFIER_nondet_int() ; [L21] int s__hit = __VERIFIER_nondet_int() ; [L22] int s__rwstate ; [L23] int s__init_buf___0 = __VERIFIER_nondet_int() ; [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 = __VERIFIER_nondet_int() ; [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 = __VERIFIER_nondet_int() ; [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 [L253] COND FALSE !(ret <= 0) [L256] s__state = 4384 [L257] s__init_num = 0 [L258] 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 [L264] ret = __VERIFIER_nondet_int() [L265] COND TRUE blastFlag == 1 [L266] blastFlag = 2 [L268] COND FALSE !(ret <= 0) [L271] COND FALSE !(\read(s__hit)) [L274] s__state = 4400 [L276] 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 [L281] __cil_tmp56 = (unsigned long )s__s3__tmp__new_cipher__algorithms [L282] COND FALSE !(__cil_tmp56 + 256UL) [L285] ret = __VERIFIER_nondet_int() [L286] COND TRUE blastFlag == 2 [L287] 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, 391 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 21.6s, OverallIterations: 20, TraceHistogramMax: 6, AutomataDifference: 10.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 8673 SDtfs, 5240 SDslu, 9235 SDs, 0 SdLazy, 2062 SolverSat, 271 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 2.5s 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=6822occurred 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: 6.6s AutomataMinimizationTime, 19 MinimizatonAttempts, 7401 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...